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1. The minima lines are:
(a) GLS. “GLS” is the acronym for GNSS
landing system; GNSS is the ICAO acronym for
Global Navigation Satellite System (the international
term for all GPS type systems). This line was
originally published as a placeholder for both WAAS
and LAAS minima and marked as N/A since no
minima was published. As the concepts for LAAS
and WAAS procedure publication have evolved, GLS
will now be used only for LAAS minima, which will
be on a separate approach chart. Most RNAV(GPS)
approach charts have had the GLS minima line
replaced by a WAAS LPV line of minima.
(b) LPV. “LPV” is the acronym for localizer
performance with vertical guidance. LPV identifies
WAAS APV approach minimums with electronic
lateral and vertical guidance. The lateral guidance is
equivalent to localizer and the protected area for LPV
procedures is now the same as for an ILS. The
obstacle clearance area is considerably smaller than
the LNAV/VNAV protection, allowing lower minima
in many cases. Aircraft can fly this minima line with
a statement in the Aircraft Flight Manual that the
installed equipment supports LPV approaches. This
includes Class 3 and 4 TSO-C146 WAAS equipment.
(c) LNAV/VNAV. LNAV/VNAV identifies
APV minimums developed to accommodate an
RNAV IAP with vertical guidance, usually provided
by approach certified Baro-VNAV, but with lateral
and vertical integrity limits larger than a precision
approach or LPV. LNAV stands for Lateral
Navigation; VNAV stands for Vertical Navigation.
This minima line can be flown by aircraft with a
statement in the Aircraft Flight Manual that the
installed equipment supports GPS approaches and
has an approach-approved barometric VNAV, or if
the aircraft has been demonstrated to support
LNAV/VNAV approaches. This includes Class 2, 3
and 4 TSO-C146 WAAS equipment. Aircraft using
LNAV/VNAV minimums will descend to landing via
an internally generated descent path based on satellite
or other approach approved VNAV systems. Since
electronic vertical guidance is provided, the minima
will be published as a DA. Other navigation systems
may be specifically authorized to use this line of
minima, see Section A, Terms/Landing Minima Data,
of the U.S. Terminal Procedures books.
(d) LP. “LP” is the acronym for localizer
performance. LP identifies nonprecision WAAS
procedures which are equivalent to ILS Localizer
procedures. LP is intended for use in locations where
vertical guidance cannot be provided due to terrain or
other obstacles. The protected area is considerably
smaller than the area for LNAV lateral protection and
will provide a lower MDA in many cases. WAAS
equipment may not support LP, even if it supports
LPV, if it was approved before TSO C-145B and
TSO C-146B. Receivers approved under previous
TSOs may require an upgrade by the manufacturer in
order to be used to fly to LP minima. Receivers
approved for LP must have a statement in the
approved Flight Manual or Supplemental Flight
Manual including LP as one of the approved
approach types. LPV and LP cannot be published as
part of the same instrument procedure due to the
inability to change integrity limits during an
approach.
(e) LNAV. This minima is for lateral
navigation only, and the approach minimum altitude
will be published as a minimum descent altitude
(MDA). LNAV provides the same level of service as
the present GPS stand alone approaches. LNAV
minimums support the following navigation systems:
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Arrival Procedures
WAAS, when the navigation solution will not support
vertical navigation; and, GPS navigation systems
which are presently authorized to conduct GPS
approaches. Existing GPS approaches continue to be
converted to the RNAV (GPS) format as they are
revised or reviewed.
NOTE-
GPS receivers approved for approach operations in
accordance with: AC 20-138, Airworthiness Approval of
Global Positioning System (GPS) Navigation Equipment
for Use as a VFR and IFR Supplemental Navigation
System, for stand-alone Technical Standard Order (TSO)
TSO-C129 Class A(1) systems; or AC 20-130A,
Airworthiness Approval of Navigation or Flight
Management Systems Integrating Multiple Navigation
Sensors, for GPS as part of a multi-sensor system, qualify
for this minima. WAAS navigation equipment must be
approved in accordance with the requirements specified in
TSO-C145 or TSO-C146 and installed in accordance with
Advisory Circular AC 20-138A, Airworthiness Approval
of Global Navigation Satellite System (GNSS) Equipment.
2. Other systems may be authorized to utilize
these approaches. See the description in Section A of
the U.S. Terminal Procedures books for details. These
systems may include aircraft equipped with an FMS
that can file /E or /F. Operational approval must also
be obtained for Baro-VNAV systems to operate to the
LNAV/VNAV minimums. Baro-VNAV may not be
authorized on some approaches due to other factors,
such as no local altimeter source being available.
Baro-VNAV is not authorized on LPV procedures.
Pilots are directed to their local Flight Standards
District Office (FSDO) for additional information.
NOTE-
RNAV and Baro-VNAV systems must have a manufacturer
supplied electronic database which shall include the
waypoints, altitudes, and vertical data for the procedure to
be flown. The system shall also be able to extract the
procedure in its entirety, not just as a manually entered
series of waypoints.
3. ILS or RNAV (GPS) charts. Some RNAV
(GPS) charts will also contain an ILS line of minima
to make use of the ILS precision final in conjunction
with the RNAV GPS capabilities for the portions of
the procedure prior to the final approach segment and
for the missed approach. Obstacle clearance for the
portions of the procedure other than the final
approach segment is still based on GPS criteria.
NOTE-
Some GPS receiver installations inhibit GPS navigation
whenever ANY ILS frequency is tuned. Pilots flying
aircraft with receivers installed in this manner must wait
until they are on the intermediate segment of the procedure
prior to the PFAF (PFAF is the active waypoint) to tune the
ILS frequency and must tune the ILS back to a VOR frequency in order to fly the GPS based missed approach.
4. Required Navigation Performance (RNP)
(a) Pilots are advised to refer to the
“TERMS/LANDING MINIMUMS DATA”
(Section A) of the U.S. Government Terminal
Procedures books for aircraft approach eligibility
requirements by specific RNP level requirements.
(b) Some aircraft have RNP approval in their
AFM without a GPS sensor. The lowest level of
sensors that the FAA will support for RNP service is
DME/DME. However, necessary DME signal may
not be available at the airport of intended operations.
For those locations having an RNAV chart published
with LNAV/VNAV minimums, a procedure note may
be provided such as “DME/DME RNP-0.3 NA.”
This means that RNP aircraft dependent on
DME/DME to achieve RNP-0.3 are not authorized to
conduct this approach. Where DME facility
availability is a factor, the note may read “DME/DME
RNP-0.3 Authorized; ABC and XYZ Required.”
This means that ABC and XYZ facilities have been
determined by flight inspection to be required in the
navigation solution to assure RNP-0.3. VOR/DME
updating must not be used for approach procedures.
5. Chart Terminology
(a) Decision Altitude (DA) replaces the
familiar term Decision Height (DH). DA conforms to
the international convention where altitudes relate to
MSL and heights relate to AGL. DA will eventually
be published for other types of instrument approach
procedures with vertical guidance, as well. DA
indicates to the pilot that the published descent profile
is flown to the DA (MSL), where a missed approach
will be initiated if visual references for landing are not
established. Obstacle clearance is provided to allow
a momentary descent below DA while transitioning
from the final approach to the missed approach. The
aircraft is expected to follow the missed instructions
while continuing along the published final approach
course to at least the published runway threshold
waypoint or MAP (if not at the threshold) before
executing any turns.
(b) Minimum Descent Altitude (MDA) has
been in use for many years, and will continue to be
used for the LNAV only and circling procedures.
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(c) Threshold Crossing Height (TCH) has
been traditionally used in “precision” approaches as
the height of the glide slope above threshold. With
publication of LNAV/VNAV minimums and RNAV
descent angles, including graphically depicted
descent profiles, TCH also applies to the height of the
“descent angle,” or glidepath, at the threshold. Unless
otherwise required for larger type aircraft which may
be using the IAP, the typical TCH is 30 to 50 feet.
6. The MINIMA FORMAT will also change
slightly.
(a) Each line of minima on the RNAV IAP is
titled to reflect the level of service available; e.g.,
GLS, LPV, LNAV/VNAV, and LNAV. CIRCLING
minima will also be provided.
(b) The minima title box indicates the nature
of the minimum altitude for the IAP. For example:
(1) DA will be published next to the
minima line title for minimums supporting vertical
guidance such as for GLS, LPV or LNAV/VNAV.
(2) MDA will be published where the
minima line was designed to support aircraft with
only lateral guidance available, such as LNAV.
Descent below the MDA, including during the missed
approach, is not authorized unless the visual
conditions stated in 14 CFR Section 91.175 exist.
(3) Where two or more systems, such as
LPV and LNAV/VNAV, share the same minima, each
line of minima will be displayed separately.
7. Chart Symbology changed slightly to
include:
(a) Descent Profile. The published descent
profile and a graphical depiction of the vertical path
to the runway will be shown. Graphical depiction of
the RNAV vertical guidance will differ from the
traditional depiction of an ILS glide slope (feather)
through the use of a shorter vertical track beginning
at the decision altitude.
(1) It is FAA policy to design IAPs with
minimum altitudes established at fixes/waypoints to
achieve optimum stabilized (constant rate) descents
within each procedure segment. This design can
enhance the safety of the operations and contribute
toward reduction in the occurrence of controlled
flight into terrain (CFIT) accidents. Additionally, the
National Transportation Safety Board (NTSB)
recently emphasized that pilots could benefit from
publication of the appropriate IAP descent angle for
a stabilized descent on final approach. The RNAV
IAP format includes the descent angle to the
hundredth of a degree; e.g., 3.00 degrees. The angle
will be provided in the graphically depicted descent
profile.
(2) The stabilized approach may be
performed by reference to vertical navigation
information provided by WAAS or LNAV/VNAV
systems; or for LNAV-only systems, by the pilot
determining the appropriate aircraft
attitude/groundspeed combination to attain a
constant rate descent which best emulates the
published angle. To aid the pilot, U.S. Government
Terminal Procedures Publication charts publish an
expanded Rate of Descent Table on the inside of the
back hard cover for use in planning and executing
precision descents under known or approximate
groundspeed conditions.
(b) Visual Descent Point (VDP). A VDP
will be published on most RNAV IAPs. VDPs apply
only to aircraft utilizing LP or LNAV minima, not
LPV or LNAV/VNAV minimums.
(c) Missed Approach Symbology. In order
to make missed approach guidance more readily
understood, a method has been developed to display
missed approach guidance in the profile view through
the use of quick reference icons. Due to limited space
in the profile area, only four or fewer icons can be
shown. However, the icons may not provide
representation of the entire missed approach
procedure. The entire set of textual missed approach
instructions are provided at the top of the approach
chart in the pilot briefing. (See FIG 5-4-9).
(d) Waypoints. All RNAV or GPS
stand-alone IAPs are flown using data pertaining to
the particular IAP obtained from an onboard
database, including the sequence of all WPs used for
the approach and missed approach, except that step
down waypoints may not be included in some
TSO-C129 receiver databases. Included in the
database, in most receivers, is coding that informs the
navigation system of which WPs are fly-over (FO) or
fly-by (FB). The navigation system may provide
guidance appropriately -including leading the turn
prior to a fly-by WP; or causing overflight of a
fly-over WP. Where the navigation system does not
provide such guidance, the pilot must accomplish the
turn lead or waypoint overflight manually. Chart
symbology for the FB WP provides pilot awareness
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Arrival Procedures
of expected actions. Refer to the legend of the U.S.
Terminal Procedures books.
(e) TAAs are described in paragraph 5-4-5d,
Terminal Arrival Area (TAA). When published, the
RNAV chart depicts the TAA areas through the use of
“icons” representing each TAA area associated with
the RNAV procedure (See FIG 5-4-9). These icons
are depicted in the plan view of the approach chart,
generally arranged on the chart in accordance with
their position relative to the aircraft’s arrival from the
en route structure. The WP, to which navigation is
appropriate and expected within each specific TAA
area, will be named and depicted on the associated
TAA icon. Each depicted named WP is the IAF for
arrivals from within that area. TAAs may not be used
on all RNAV procedures because of airspace
congestion or other reasons.
(f) Hot and Cold Temperature Limitations.
A minimum and maximum temperature limitation
is published on procedures which authorize
Baro-VNAV operation. These temperatures
represent the airport temperature above or below
which Baro-VNAV is not authorized to
LNAV/VNAV minimums. As an example, the
limitation will read: “Uncompensated Baro-VNAV
NA below -8_C (-18_F) or above 47_C (117_F).”
This information will be found in the upper left hand
box of the pilot briefing. When the temperature is
above the high temperature or below the low
temperature limit, Baro-VNAV may be used to
provide a stabilized descent to the LNAV MDA;
however, extra caution should be used in the visual
segment to ensure a vertical correction is not
required. If the VGSI is aligned with the published
glidepath, and the aircraft instruments indicate on
glidepath, an above or below glidepath indication on
the VGSI may indicate that temperature error is
causing deviations to the glidepath. These deviations
should be considered if the approach is continued
below the MDA.
NOTE-
Many systems which apply Baro-VNAV temperature
compensation only correct for cold temperature. In this
case, the high temperature limitation still applies. Also,
temperature compensation may require activation by
maintenance personnel during installation in order to be
functional, even though the system has the feature. Some
systems may have a temperature correction capability, but
correct the Baro-altimeter all the time, rather than just on
the final, which would create conflicts with other aircraft
if the feature were activated. Pilots should be aware of
compensation capabilities of the system prior to
disregarding the temperature limitations.
NOTE-
Temperature limitations do not apply to flying the LNAV/
VNAV line of minima using approach certified WAAS
receivers when LPV or LNAV/VNAV are annunciated to be
available.
(g) WAAS Channel Number/Approach ID.
The WAAS Channel Number is an optional
equipment capability that allows the use of a 5-digit
number to select a specific final approach segment
without using the menu method. The Approach ID is
an airport unique 4-character combination for
verifying the selection and extraction of the correct
final approach segment information from the aircraft
database. It is similar to the ILS ident, but displayed
visually rather than aurally. The Approach ID
consists of the letter W for WAAS, the runway
number, and a letter other than L, C or R, which could
be confused with Left, Center and Right, e.g., W35A.
Approach IDs are assigned in the order that WAAS
approaches are built to that runway number at that
airport. The WAAS Channel Number and Approach
ID are displayed in the upper left corner of the
approach procedure pilot briefing.
(h) At locations where outages of WAAS
vertical guidance may occur daily due to initial
system limitations, a negative W symbol ( ) will be
placed on RNAV (GPS) approach charts. Many of
these outages will be very short in duration, but may
result in the disruption of the vertical portion of the
approach. The symbol indicates that NOTAMs or
Air Traffic advisories are not provided for outages
which occur in the WAAS LNAV/VNAV or LPV
vertical service. Use LNAV minima for flight
planning at these locations, whether as a destination
or alternate. For flight operations at these locations,
when the WAAS avionics indicate that LNAV/VNAV
or LPV service is available, then vertical guidance
may be used to complete the approach using the
displayed level of service. Should an outage occur
during the procedure, reversion to LNAV minima
may be required. As the WAAS coverage is
expanded, the will be removed.
5-4-6. Approach Clearance
a. An aircraft which has been cleared to a holding
fix and subsequently “cleared . . . approach” has not
received new routing. Even though clearance for the
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AIM 2/14/5-4-24 Arrival Procedures
approach may have been issued prior to the aircraft
reaching the holding fix, ATC would expect the pilot
to proceed via the holding fix (his/her last assigned
route), and the feeder route associated with that fix (if
a feeder route is published on the approach chart) to
the initial approach fix (IAF) to commence the
approach. WHEN CLEARED FOR THE
APPROACH, THE PUBLISHED OFF AIRWAY
(FEEDER) ROUTES THAT LEAD FROM THE
EN ROUTE STRUCTURE TO THE IAF ARE PART
OF THE APPROACH CLEARANCE.
b. If a feeder route to an IAF begins at a fix located
along the route of flight prior to reaching the holding
fix, and clearance for an approach is issued, a pilot
should commence the approach via the published
feeder route; i.e., the aircraft would not be expected
to overfly the feeder route and return to it. The pilot
is expected to commence the approach in a similar
manner at the IAF, if the IAF for the procedure is
located along the route of flight to the holding fix.
c. If a route of flight directly to the initial approach
fix is desired, it should be so stated by the controller
with phraseology to include the words “direct . . . ,”
“proceed direct” or a similar phrase which the pilot
can interpret without question. When uncertain of the
clearance, immediately query ATC as to what route of
flight is desired.
d. The name of an instrument approach, as
published, is used to identify the approach, even
though a component of the approach aid, such as the
glideslope on an Instrument Landing System, is
inoperative or unreliable. The controller will use the
name of the approach as published, but must advise
the aircraft at the time an approach clearance is issued
that the inoperative or unreliable approach aid
component is unusable.
5-4-7. Instrument Approach Procedures
a. Aircraft approach category means a grouping of
aircraft based on a speed of VREF, if specified, or if
VREF is not specified, 1.3 VSO at the maximum
certified landing weight. VREF, VSO, and the
maximum certified landing weight are those values as
established for the aircraft by the certification
authority of the country of registry. A pilot must use
the minima corresponding to the category determined
during certification or higher. Helicopters may use
Category A minima. If it is necessary to operate at a
speed in excess of the upper limit of the speed range
for an aircraft’s category, the minimums for the
higher category must be used. For example, an
airplane which fits into Category B, but is circling to
land at a speed of 145 knots, must use the approach
Category D minimums. As an additional example, a
Category A airplane (or helicopter) which is
operating at 130 knots on a straight-in approach must
use the approach Category C minimums. See the
following category limits:
1. Category A: Speed less than 91 knots.
2. Category B: Speed 91 knots or more but less
than 121 knots.
3. Category C: Speed 121 knots or more but
less than 141 knots.
4. Category D: Speed 141 knots or more but
less than 166 knots.
5. Category E: Speed 166 knots or more.
NOTE-
VREF in the above definition refers to the speed used in
establishing the approved landing distance under the
airworthiness regulations constituting the type
certification basis of the airplane, regardless of whether
that speed for a particular airplane is 1.3VSO, 1.23 VSR, or
some higher speed required for airplane controllability.
This speed, at the maximum certificated landing weight,
determines the lowest applicable approach category for
all approaches regardless of actual landing weight.
b. When operating on an unpublished route or
while being radar vectored, the pilot, when an
approach clearance is received, shall, in addition to
complying with the minimum altitudes for IFR
operations (14 CFR Section 91.177), maintain the
last assigned altitude unless a different altitude is
assigned by ATC, or until the aircraft is established on
a segment of a published route or IAP. After the
aircraft is so established, published altitudes apply to
descent within each succeeding route or approach
segment unless a different altitude is assigned by
ATC. Notwithstanding this pilot responsibility, for
aircraft operating on unpublished routes or while
being radar vectored, ATC will, except when
conducting a radar approach, issue an IFR approach
clearance only after the aircraft is established on a
segment of a published route or IAP, or assign an
altitude to maintain until the aircraft is established on
a segment of a published route or instrument
approach procedure. For this purpose, the procedure
turn of a published IAP shall not be considered a
segment of that IAP until the aircraft reaches the
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Arrival Procedures
initial fix or navigation facility upon which the
procedure turn is predicated.
EXAMPLE-
Cross Redding VOR at or above five thousand, cleared
VOR runway three four approach.
or
Five miles from outer marker, turn right heading three three
zero, maintain two thousand until established on the
localizer, cleared ILS runway three six approach.
NOTE-
The altitude assigned will assure IFR obstruction
clearance from the point at which the approach clearance
is issued until established on a segment of a published route
or IAP. If uncertain of the meaning of the clearance,
immediately request clarification from ATC.
c. Several IAPs, using various navigation and
approach aids may be authorized for an airport. ATC
may advise that a particular approach procedure is
being used, primarily to expedite traffic. If issued a
clearance that specifies a particular approach
procedure, notify ATC immediately if a different one
is desired. In this event it may be necessary for ATC
to withhold clearance for the different approach until
such time as traffic conditions permit. However, a
pilot involved in an emergency situation will be given
priority. If the pilot is not familiar with the specific
approach procedure, ATC should be advised and they
will provide detailed information on the execution of
the procedure.
REFERENCE-
AIM, Advance Information on Instrument Approach, Paragraph 5-4-4.
d. At times ATC may not specify a particular
approach procedure in the clearance, but will state
“CLEARED APPROACH.” Such clearance
indicates that the pilot may execute any one of the
authorized IAPs for that airport. This clearance does
not constitute approval for the pilot to execute a
contact approach or a visual approach.
e. Except when being radar vectored to the final
approach course, when cleared for a specifically
prescribed IAP; i.e., “cleared ILS runway one niner
approach” or when “cleared approach” i.e., execution
of any procedure prescribed for the airport, pilots
shall execute the entire procedure commencing at an
IAF or an associated feeder route as described on the
IAP chart unless an appropriate new or revised ATC
clearance is received, or the IFR flight plan is
canceled.
f. Pilots planning flights to locations which are
private airfields or which have instrument approach
procedures based on private navigation aids should
obtain approval from the owner. In addition, the pilot
must be authorized by the FAA to fly special
instrument approach procedures associated with
private navigation aids (see paragraph 5-4-8).
Owners of navigation aids that are not for public use
may elect to turn off the signal for whatever reason
they may have; e.g., maintenance, energy
conservation, etc. Air traffic controllers are not
required to question pilots to determine if they have
permission to land at a private airfield or to use
procedures based on privately owned navigation aids,
and they may not know the status of the navigation
aid. Controllers presume a pilot has obtained
approval from the owner and the FAA for use of
special instrument approach procedures and is aware
of any details of the procedure if an IFR flight plan
was filed to that airport.
g. Pilots should not rely on radar to identify a fix
unless the fix is indicated as “RADAR” on the IAP.
Pilots may request radar identification of an OM, but
the controller may not be able to provide the service
due either to workload or not having the fix on the
video map.
h. If a missed approach is required, advise ATC
and include the reason (unless initiated by ATC).
Comply with the missed approach instructions for the
instrument approach procedure being executed,
unless otherwise directed by ATC.
REFERENCE-
AIM, Missed Approach, Paragraph 5-4-21.
AIM, Missed Approach, Paragraph 5-5-5.
i. ATC may clear aircraft that have filed an
Advanced RNAV equipment suffix to the
intermediate fix when clearing aircraft for an
instrument approach procedure. ATC will take the
following actions when clearing Advanced RNAV
aircraft to the intermediate fix:
1. Provide radar monitoring to the intermediate
fix.
2. Advise the pilot to expect clearance direct to
the intermediate fix at least 5 miles from the fix.
NOTE-
This is to allow the pilot to program the RNAV equipment
to allow the aircraft to fly to the intermediate fix when
cleared by ATC.
3. Assign an altitude to maintain until the
intermediate fix.
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4. Insure the aircraft is on a course that will
intercept the intermediate segment at an angle not
greater than 90 degrees and is at an altitude that will
permit normal descent from the intermediate fix to
the final approach fix.
5-4-8. Special Instrument Approach
Procedures
Instrument Approach Procedure (IAP) charts reflect
the criteria associated with the U.S. Standard for
Terminal Instrument [Approach] Procedures
(TERPs), which prescribes standardized methods for
use in developing IAPs. Standard IAPs are published
in the Federal Register (FR) in accordance with
Title 14 of the Code of Federal Regulations, Part 97,
and are available for use by appropriately qualified
pilots operating properly equipped and airworthy
aircraft in accordance with operating rules and
procedures acceptable to the FAA. Special IAPs are
also developed using TERPS but are not given public
notice in the FR. The FAA authorizes only certain
individual pilots and/or pilots in individual
organizations to use special IAPs, and may require
additional crew training and/or aircraft equipment or
performance, and may also require the use of landing
aids, communications, or weather services not
available for public use. Additionally, IAPs that
service private use airports or heliports are generally
special IAPs.
5-4-9. Procedure Turn and Hold-in-lieu of
Procedure Turn
a. A procedure turn is the maneuver prescribed
when it is necessary to reverse direction to establish
the aircraft inbound on an intermediate or final
approach course. The procedure turn or
hold-in-lieu-of-PT is a required maneuver when it
is depicted on the approach chart. However, the
procedure turn or hold-in-lieu-of-PT is not
permitted when the symbol “No PT” is depicted on
the initial segment being used, when a RADAR
VECTOR to the final approach course is provided, or
when conducting a timed approach from a holding
fix. The altitude prescribed for the procedure turn is
a minimum altitude until the aircraft is established on
the inbound course. The maneuver must be
completed within the distance specified in the profile
view.
NOTE-
The pilot may elect to use the procedure turn or
hold-in-lieu-of-PT when it is not required by the
procedure, but must first receive an amended clearance
from ATC. When ATC is radar vectoring to the final
approach course or to the intermediate fix, ATC may
specify in the approach clearance “CLEARED
STRAIGHT-IN (type) APPROACH” to ensure the
procedure turn or hold-in-lieu-of-PT is not to be flown. If
the pilot is uncertain whether the ATC clearance intends
for a procedure turn to be conducted or to allow for a
straight-in approach, the pilot shall immediately request
clarification from ATC (14 CFR Section 91.123).
1. On U.S. Government charts, a barbed arrow
indicates the direction or side of the outbound course
on which the procedure turn is made. Headings are
provided for course reversal using the 45 degree type
procedure turn. However, the point at which the turn
may be commenced and the type and rate of turn is left
to the discretion of the pilot. Some of the options are
the 45 degree procedure turn, the racetrack pattern,
the tear-drop procedure turn, or the 80 degree _
260 degree course reversal. Some procedure turns are
specified by procedural track. These turns must be
flown exactly as depicted.
2. When the approach procedure involves a
procedure turn, a maximum speed of not greater than
200 knots (IAS) should be observed from first
overheading the course reversal IAF through the
procedure turn maneuver to ensure containment
within the obstruction clearance area. Pilots should
begin the outbound turn immediately after passing
the procedure turn fix. The procedure turn maneuver
must be executed within the distance specified in the
profile view. The normal procedure turn distance is
10 miles. This may be reduced to a minimum of
5 miles where only Category A or helicopter aircraft
are to be operated or increased to as much as 15 miles
to accommodate high performance aircraft.
3. A teardrop procedure or penetration turn may
be specified in some procedures for a required course
reversal. The teardrop procedure consists of
departure from an initial approach fix on an outbound
course followed by a turn toward and intercepting the
inbound course at or prior to the intermediate fix or
point. Its purpose is to permit an aircraft to reverse
direction and lose considerable altitude within
reasonably limited airspace. Where no fix is available
to mark the beginning of the intermediate segment, it
3/15/07 7110.65R CHG 2 AIM 7/31/08
AIM 2/14/08
5-4-27
Arrival Procedures
shall be assumed to commence at a point 10 miles
prior to the final approach fix. When the facility is
located on the airport, an aircraft is considered to be
on final approach upon completion of the penetration
turn. However, the final approach segment begins on
the final approach course 10 miles from the facility.
4. A holding pattern in lieu of procedure turn
may be specified for course reversal in some
procedures. In such cases, the holding pattern is
established over an intermediate fix or a final
approach fix. The holding pattern distance or time
specified in the profile view must be observed.
Maximum holding airspeed limitations as set forth
for all holding patterns apply. The holding pattern
maneuver is completed when the aircraft is
established on the inbound course after executing the
appropriate entry. If cleared for the approach prior to
returning to the holding fix, and the aircraft is at the
prescribed altitude, additional circuits of the holding
pattern are not necessary nor expected by ATC. If
pilots elect to make additional circuits to lose
excessive altitude or to become better established on
course, it is their responsibility to so advise ATC upon
receipt of their approach clearance.
NOTE-
Some approach charts have an arrival holding pattern
depicted at the IAF using a “thin line” holding symbol. It
is charted where holding is frequently required prior to
starting the approach procedure so that detailed holding
instructions are not required. The arrival holding pattern
is not authorized unless assigned by Air Traffic Control.
Holding at the same fix may also be depicted on the enroute
chart. A hold-in-lieu of procedure turn is depicted by a
“thick line” symbol, and is part of the instrument approach
procedure as described in paragraph 5-4-9.(See U. S.
Terminal Procedures booklets page G1 for both examples.)
5. A procedure turn is not required when an
approach can be made directly from a specified
intermediate fix to the final approach fix. In such
cases, the term “NoPT” is used with the appropriate
course and altitude to denote that the procedure turn
is not required. If a procedure turn is desired, and
when cleared to do so by ATC, descent below the
procedure turn altitude should not be made until the
aircraft is established on the inbound course, since
some NoPT altitudes may be lower than the
procedure turn altitudes. |
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