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Pilot/Controller Glossary 7/31/08- N# p: P) N) d: @( s: t
PCG-1$ L. J* h% m) }9 @% f
PILOT/CONTROLLER
D( u6 c7 L& ?, h$ VGLOSSARY! n7 B V$ i% O$ [. K! V) w
PURPOSE9 ]) j# A* l; r6 q2 P
a. This Glossary was compiled to promote a common understanding of the terms used in the Air Traffic
7 h/ a7 m$ T5 T" Q- }9 QControl system. It includes those terms which are intended for pilot/controller communications. Those terms e- H2 n! S8 V( Q, `: I3 t
most frequently used in pilot/controller communications are printed in bold italics. The definitions are primarily# i3 o/ j4 j/ H9 \
defined in an operational sense applicable to both users and operators of the National Airspace System. Use of
% U1 A* S/ ]0 Z7 Q# Rthe Glossary will preclude any misunderstandings concerning the system's design, function, and purpose., S! O; h( ~" ]0 x8 T; h' r
b. Because of the international nature of flying, terms used in the Lexicon, published by the International" l) V! V% A3 \1 n1 f% r' d1 }
Civil Aviation Organization (ICAO), are included when they differ from FAA definitions. These terms are! _/ g8 l# X8 n3 P' b) m# Y; z
followed by “[ICAO].” For the reader's convenience, there are also cross references to related terms in other parts
1 J9 g/ [8 M, Q: Pof the Glossary and to other documents, such as the Code of Federal Regulations (CFR) and the Aeronautical
& w" N' s- w9 a3 b* u8 ]6 n$ x6 LInformation Manual (AIM).' t* [/ `1 J7 h( I D' u
c. This Glossary will be revised, as necessary, to maintain a common understanding of the system.
( P) d1 F4 N9 |! O" E' VEXPLANATION OF CHANGES2 M& s& b# ?5 o% z/ m; i6 h1 g
a. Terms Added:- H4 [- H; p5 v( Z3 D
AUTOMATIC FLIGHT INFORMATION SERVICE (AFIS) - ALASKA FSS ONLY4 B3 S9 V; }: t7 \
b. Editorial/format changes were made where necessary. Revision bars were not used due to the insignificant
: \0 I& _* F5 E T- mnature of the changes." x% v, J+ K$ v* U/ m7 O
Pilot/Controller Glossary 2/14/08
+ E. {9 t( ^' k) R' @0 Z% B' \PCG A-11 ]) W0 J4 z' r7 F$ f7 Z/ w# L" V
A. k. T0 v. B* \# x
AAI(See ARRIVAL AIRCRAFT INTERVAL.)
# H K+ t* n) j. o% q5 o8 s' `* LAAR(See AIRPORT ARRIVAL RATE.)
1 r7 G/ d$ t: \% y2 EABBREVIATED IFR FLIGHT PLANS- An4 y3 }, u4 y+ V1 e7 f2 k/ S# B6 Z
authorization by ATC requiring pilots to submit only
9 e' ]3 i2 g1 }' W8 Tthat information needed for the purpose of ATC. It8 d+ A% V( w( W) b
includes only a small portion of the usual IFR flight
; R: _+ S: y# q* ~! D! P. e( hplan information. In certain instances, this may be
M( I. F8 I* |8 ^% E3 s# x" konly aircraft identification, location, and pilot
1 T* [ p" g7 `% v; e& zrequest. Other information may be requested if
4 O! t* ~* c$ `, w3 lneeded by ATC for separation/control purposes. It is* x4 v* l1 O% c- J/ H8 E
frequently used by aircraft which are airborne and
! ?2 N' \( K& c" l" Xdesire an instrument approach or by aircraft which are
% \4 k. V4 c" Y5 ?on the ground and desire a climb to VFR‐on‐top.
7 Z2 p# n! {3 N( e1 i: C(See VFR‐ON‐TOP.)5 ^7 y( t" G/ k1 G& l$ N8 Z& a9 e
(Refer to AIM.)% R! n. m4 w9 O& F% R3 U9 n( u5 I6 n
ABEAM- An aircraft is “abeam” a fix, point, or
/ h3 p) D; i6 r. R B* w5 a$ Fobject when that fix, point, or object is approximately4 G+ W% R5 e w
90 degrees to the right or left of the aircraft track.
, s& _. G" v* \7 z: TAbeam indicates a general position rather than a
5 t7 m& T6 E# p0 J9 i J* iprecise point.7 z6 ^. r. _/ I& m% X2 p2 p
ABORT- To term inate a preplanned aircraft4 h( p; V) r1 Z) u9 v6 @7 t; g
maneuver; e.g., an aborted takeoff.7 ]" _9 y/ m7 _5 f( T) v
ACC [ICAO]-
) M, `, Y' @7 @(See ICAO term AREA CONTROL CENTER.)' w7 a9 ]1 x* X9 E; U5 u8 p
ACCELERATE‐STOP DISTANCE AVAILABLE-2 X. @; K$ F' O' G4 V2 s
The runway plus stopway length declared available
* q6 l( Y, g# `9 P- Eand suitable for the acceleration and deceleration of
& M; p2 n# U4 s* q+ {2 Wan airplane aborting a takeoff.' _4 r# `" R7 J+ ^3 [
ACCELERATE‐STOP DISTANCE AVAILABLE% Y2 t6 G# Y3 z! u, V! R& a
[ICAO]- The length of the take‐off run available plus
0 w. p9 m0 z6 [! T; nthe length of the stopway if provided.# m. c3 H2 M: h5 g" v8 [: _6 r
ACDO(See AIR CARRIER DISTRICT OFFICE.)
8 H! F7 S4 I7 M- R+ p9 o' B1 d7 eACKNOWLEDGE- Let me know that you have
* T* F7 p1 ^$ g( U5 X6 g' a/ ]( oreceived my message.5 k! u5 H9 W' r8 @
(See ICAO term ACKNOWLEDGE.)
) ]( W1 S) ]7 x: c2 uACKNOWLEDGE [ICAO]- Let me know that you! W$ c* ?3 d- [& g4 {+ C* y
have received and understood this message.9 }' a* X# S+ q) ]8 }! u) I
ACL(See AIRCRAFT LIST.)
# O/ u" h& b6 F5 J1 b8 tACLS(See AUTOMATIC CARRIER LANDING
: i& `( W7 t, l4 \% _SYSTEM.)
* m9 d7 I6 l+ P ]1 nACLT(See ACTUAL CALCULATED LANDING TIME.)% ]! w9 \/ u: v9 C
ACROBATIC FLIGHT- An intentional maneuver
4 L9 D; e) H- U/ O& iinvolving an abrupt change in an aircraft's attitude, an. F' s! H9 q6 w/ x) i) a
abnormal attitude, or abnormal acceleration not
- F0 P* ?) E) _- d/ Lnecessary for normal flight.- P! y3 a' f' a% s: ?$ ]# B& N
(See ICAO term ACROBATIC FLIGHT.)
$ ^4 Y' D% M3 i" I0 R4 `(Refer to 14 CFR Part 91.)0 \4 S; Q2 B4 |. N$ F( M, S/ {3 u
ACROBATIC FLIGHT [ICAO]- Maneuvers inten‐3 B/ d, L4 Y: w V K. L& S: G f; B
tionally performed by an aircraft involving an abrupt) T; g+ n& \5 E8 s; m
change in its attitude, an abnormal attitude, or an3 }5 w/ o5 x0 I
abnormal variation in speed.! H/ D. [5 R$ B7 G. W- P" f: m
ACTIVE RUNWAY(See RUNWAY IN USE/ACTIVE RUNWAY/DUTY# [4 a- a o" p8 x+ u9 H0 u
RUNWAY.)
" |( i0 i& T1 ~8 E( {/ G: E+ QACTUAL CALCULATED LANDING TIME-
& T8 Y2 B* V! t$ z1 ^+ hACLT is a flight's frozen calculated landing time. An
6 |3 n: }! }4 p+ x- D: dactual time determined at freeze calculated landing3 R3 h9 y. g; P. z
time (FCLT) or meter list display interval (MLDI) for
: R# r8 O6 k. wthe adapted vertex for each arrival aircraft based upon
! J/ O5 Q+ W4 Hrunway configuration, airport acceptance rate, airport9 ]9 @& V: @; C( b) j0 N4 H
arrival delay period, and other metered arrival1 p( g8 A! W" {2 Q. P7 c
aircraft. This time is either the vertex time of arrival
8 L, q* D/ O* ?3 [: v3 R8 ?( n3 B7 u(VTA) of the aircraft or the tentative calculated3 S4 M' R, H, y y, h1 z6 u) V0 ~
landing time (TCLT)/ACLT of the previous aircraft
; a1 d& M1 a& c+ `plus the arrival aircraft interval (AAI), whichever is
( i/ [" ]8 A! u1 X% Tlater. This time will not be updated in response to the
5 |2 G: P; y$ K, ~/ H, J$ oaircraft's progress.
% Z+ I/ v1 W- z, uACTUAL NAVIGATION PERFORMANCE m. u4 I1 s. G! }/ I, t. L( x9 X
(ANP)-
- R( l$ _5 L+ ^3 k) [(See REQUIRED NAVIGATION( S) A' u Z% H6 y2 R O
PERFORMANCE.)' R) F0 `1 x2 `0 z
ADDITIONAL SERVICES- Advisory information
9 G. k/ O$ F( l" P; H' d) Zprovided by ATC which includes but is not limited to. [! }2 i4 x `: s) ?* M
the following: H/ {0 p% U8 t4 c- q0 J6 \' L
a. Traffic advisories.3 r* I- D0 ^7 N) a) i+ l
b. Vectors, when requested by the pilot, to assist
: u" ?# |( K9 [! e- s: C" B. J0 Maircraft receiving traffic advisories to avoid observed# q6 D9 [' ~% `; p
traffic.& F, a0 N+ Y, T) ?/ A
Pilot/Controller Glossary 2/14/08
' v2 A0 T- b T3 t; TPCG A-2. V; u$ I! ~& a
c. Altitude deviation information of 300 feet or. j. U0 d, w* F1 c
more from an assigned altitude as observed on a$ t( @* s! b2 E" a" K
verified (reading correctly) automatic altitude
$ P6 G' ^9 ?6 S4 {5 Z4 X' Jreadout (Mode C).
( J/ w7 G* `, |d. Advisories that traffic is no longer a factor.
7 E( [) q2 K3 Q, H$ {9 `e. Weather and chaff information.
, x/ n0 I/ A2 Y" t' t$ O4 X Wf. Weather assistance.1 P3 A: u/ h8 ?8 [. J
g. Bird activity information.
6 h' l0 S' l- H1 Yh. Holding pattern surveillance. Additional ser‐
; {8 |+ @% p, t- S' |, j) l1 \vices are provided to the extent possible contingent
- k' C- N% D$ b8 c+ G3 s. uonly upon the controller's capability to fit them into
4 @6 U) L9 z% S, R; dthe performance of higher priority duties and on the' G$ c( ?3 H" }) r. H6 s6 V* c
basis of limitations of the radar, volume of traffic,
" M8 I1 R7 V+ q' |2 Bfrequency congestion, and controller workload. The1 z# x1 B0 E6 t
controller has complete discretion for determining if0 y) {, I) }' M+ R& y
he/she is able to provide or continue to provide a
$ O2 A, e$ P; F/ v* N$ X7 tservice in a particular case. The controller's reason
7 \. ^7 w/ \2 l; d7 K5 \& A- u A: Snot to provide or continue to provide a service in a: b4 w- Y: F9 S' J: \
particular case is not subject to question by the pilot
4 c( J. p/ z5 h8 d; b0 u' Qand need not be made known to him/her.
+ y3 `4 g& K3 _+ ]: ?# I(See TRAFFIC ADVISORIES.)* v0 P8 _6 A* @9 P: u
(Refer to AIM.)
# V; q* x1 c& |* o3 x- bADF(See AUTOMATIC DIRECTION FINDER.)0 F7 `: U% B. J- i
ADIZ(See AIR DEFENSE IDENTIFICATION ZONE.)# l8 h( Y: V! w% q+ ?& G# l
ADLY(See ARRIVAL DELAY.)) ^% e: [* E6 U1 Z5 e3 b
ADMINISTRATOR- The Federal Aviation Admin‐
: T9 R, [5 K% Q% oistrator or any person to whom he/she has delegated
* H! k2 Q9 H" A9 Lhis/her authority in the matter concerned.( F/ U: p. W) ` P% S! Z! |
ADR(See AIRPORT DEPARTURE RATE.)
" }$ @! a7 A6 C: Z3 V& yADS [ICAO]-- M; O, M% o \
(See ICAO term AUTOMATIC DEPENDENT( l8 `6 K6 P. C7 i/ K# a; K
SURVEILLANCE.)
) J9 D9 l- a- \& X( U2 RADS-B(See AUTOMATIC DEPENDENT
% M$ F5 L) d* YSURVEILLANCE-BROADCAST.)- ^' h7 e3 S6 t/ z) I" P/ k
ADS-C(See AUTOMATIC DEPENDENT
6 I5 I( H: S( b. o4 n! S, \SURVEILLANCE-CONTRACT.)
" r' R' ?1 g* J# F2 j# o9 D, K5 m9 gADVISE INTENTIONS- Tell me what you plan to1 ~) M5 b! K( ^/ j% M3 p. s0 ?6 B% C
do.
" I4 d j' ?! b3 oADVISORY- Advice and information provided to$ m: E' \) J; A* q9 O, B( N
assist pilots in the safe conduct of flight and aircraft
( C; L' e- B8 Amovement.
2 o. W+ A+ F1 Q+ ]8 y3 z; ^(See ADVISORY SERVICE.)
" s U0 Y- O$ YADVISORY FREQUENCY- The appropriate fre‐
4 u( C' j: d. K" c2 \quency to be used for Airport Advisory Service.
( u& y( K$ }7 L; z7 Z: y& m(See LOCAL AIRPORT ADVISORY.)
- j$ C1 S& v# Y1 c# q- M5 [(See UNICOM.)
X. U5 Y/ z( {# C% T4 A(Refer to ADVISORY CIRCULAR NO. 90‐42.)
) v! [. d6 ^, N5 ?; ]1 [$ U(Refer to AIM.)! u G4 X) `8 d' P; @
ADVISORY SERVICE- Advice and information$ x. e' k& Q7 z4 O4 p
provided by a facility to assist pilots in the safe; T( t+ y. q3 a8 h0 X
conduct of flight and aircraft movement.6 I0 M# ^5 N0 r' [. E l/ h
(See ADDITIONAL SERVICES.)) T6 b& M: w7 Q6 L) `- H- J7 z( b8 z
(See EN ROUTE FLIGHT ADVISORY. ^! G/ ?) K# n" B. \; j' m [
SERVICE.)
4 H, L: s' n$ v(See LOCAL AIRPORT ADVISORY.)& {% A2 [+ x5 o
(See RADAR ADVISORY.)' q. h/ F+ n5 m$ U
(See SAFETY ALERT.)
; ~* b- O, z; s9 h8 c/ |8 L" c(See TRAFFIC ADVISORIES.)
, K! x, `; u$ i# s( b' D(Refer to AIM.)5 d, H" Y0 f) Y$ q- K; ~
AERIAL REFUELING- A procedure used by the4 [, a( Q7 x* @- u* K7 P2 U- p2 x
military to transfer fuel from one aircraft to another
0 \' {6 Y! Y3 C, e% X3 V) rduring flight.
% i, X6 a1 @- M6 J+ g- x4 w2 ^(Refer to VFR/IFR Wall Planning Charts.)
' k. P: e' D6 [4 {" D- ?+ OAERODROME- A defined area on land or water
% T6 T) y# @7 s8 y1 s(including any buildings, installations and equip‐
, Z8 w7 P; g0 wment) intended to be used either wholly or in part for# R4 M5 i" ?# `6 C% j' x- z
the arrival, departure, and movement of aircraft.% Z1 n- W" x- ~7 g3 k
AERODROME BEACON [ICAO]- Aeronautical
' i! a4 `9 C Nbeacon used to indicate the location of an aerodrome+ W9 j C! F0 r4 ?8 c6 D3 m
from the air.
b Q, P k0 U" K2 aAERODROME CONTROL SERVICE [ICAO]- Air
# N0 u q8 w! Qtraffic control service for aerodrome traffic.6 Z" q) _- m0 n: J" o8 t' ]3 H) ?
AERODROME CONTROL TOWER [ICAO]- A. X& c6 d; w3 r( ]. v1 ]1 P
unit established to provide air traffic control service6 F" Z+ ?& q h4 a
to aerodrome traffic.
7 b! i- F- C' }9 U* \* kAERODROME ELEVATION [ICAO]- The eleva‐% E3 h1 S# }. D- p6 y7 h# h3 S2 C5 `- f. ?
tion of the highest point of the landing area.8 f' w! k7 P0 k& D. L5 ?% ^
AERODROME TRAFFIC CIRCUIT [ICAO]- The
+ ]7 w5 [3 a) \1 sspecified path to be flown by aircraft operating in the
1 g$ c: b4 w7 ]' ~vicinity of an aerodrome.
) Z1 Q* z. f) g& E G1 {3 r1 fAERONAUTICAL BEACON- A visual NAVAID' U& p, X8 ?$ j3 g; ?; U5 n( e
displaying flashes of white and/or colored light to
$ D) I& J; {" M2 _ Y' gindicate the location of an airport, a heliport, a! s D- k0 n Y% c. n0 ?
Pilot/Controller Glossary 2/14/08
) T' h# e9 @7 e& }3 TPCG A-3& W$ Z2 [" F1 @/ i
landmark, a certain point of a Federal airway in
6 |0 g1 g% H% \/ b* u+ E$ I! z5 X7 mmountainous terrain, or an obstruction.5 G. [0 r# K6 E
(See AIRPORT ROTATING BEACON.)$ }3 M K" k9 Q# M0 `# l( R
(Refer to AIM.)
, M% y; G# T P- E3 sAERONAUTICAL CHART- A map used in air: G/ ]- e, a, Y0 b% |2 ]
navigation containing all or part of the following:
) R% o: u9 n9 qtopographic features, hazards and obstructions,1 t" S4 Y/ ~; [& A+ f
navigation aids, navigation routes, designated; R# t% u7 n0 }
airspace, and airports. Commonly used aeronautical
1 ^5 [7 C% {+ b* rcharts are:9 d9 d5 d, e& Z9 g1 v. W, b5 q9 u
a. Sectional Aeronautical Charts (1:500,000)-2 H+ D& u- [! i* x" a
Designed for visual navigation of slow or medium
( w9 [9 d8 x/ F U5 @ Yspeed aircraft. Topographic information on these6 i4 C' G2 p8 F0 |: t
charts features the portrayal of relief and a judicious0 n, |4 L& ^& n! C4 U( z1 v" a
selection of visual check points for VFR flight.
9 ~6 ^3 V' B% w+ D2 \' ZAeronautical information includes visual and radio
2 W+ h3 X6 N( C1 t6 V* Z Paids to navigation, airports, controlled airspace, b3 d0 b/ j, `& F e1 i/ _
restricted areas, obstructions, and related data.
* \* X1 d. w1 k+ X3 sb. VFR Terminal Area Charts (1:250,000)-
; v5 M6 ~% E) I) ]& R8 i) g, ADepict Class B airspace which provides for the: _1 K" x( m ^5 r( c: Y' `8 P
control or segregation of all the aircraft within Class
* `* r! _( f; U6 _0 W+ H9 ]* iB airspace. The chart depicts topographic informa‐' B$ x' }0 l; Q/ D4 K
tion and aeronautical information which includes
% E3 x; _1 b: A, Y+ e0 ~% |7 V' @visual and radio aids to navigation, airports,
9 i$ x3 R! A5 P# W: [controlled airspace, restricted areas, obstructions,; i9 i p$ R* u* f: Q
and related data.5 F' ?8 b5 m* C
c. World Aeronautical Charts (WAC)/ H! l- D+ u" n6 \ l8 E$ Q
(1:1,000,000)- Provide a standard series of aeronau‐
1 t% n& T: O p& Xtical charts covering land areas of the world at a size% g6 }, a9 H8 l
and scale convenient for navigation by moderate
3 }6 G/ ^8 Z$ q# F7 uspeed aircraft. Topographic information includes
, X. g5 C. \, y5 O" hcities and towns, principal roads, railroads, distinc‐8 B L, c- n+ a0 R) x
tive landmarks, drainage, and relief. Aeronautical
0 ~! O9 x! R, v% N: r$ `7 p$ q! h& winform ation includes visual and radio aids to
& r0 A9 M; S" U8 @8 Lnavigation, airports, airways, restricted areas,
6 U( m& B7 T1 ^3 c6 tobstructions, and other pertinent data.
% z1 l H$ T- md. En Route Low Altitude Charts- Provide
& ]2 W3 S8 Z4 C' q) V# f+ Aaeronautical information for en route instrument/ k/ n( G I. a- r. |/ Q
navigation (IF R) in the low altitude stratum.
& `6 f% w g8 ]: `) h. zInformation includes the portrayal of airways, limits
8 t' e! x- v/ [& kof controlled airspace, position identification and5 Y. v; u' u1 N' h" r
frequencies of radio aids, selected airports, minimum
$ J* M4 p/ ?& e5 den route and minimum obstruction clearance
3 g: j7 R( o/ Z E: u) @altitudes, airway distances, reporting points, re‐6 h$ I: L4 L% [" c+ e
stricted areas, and related data. Area charts, which are
- b! ~( n; X0 v$ da part of this series, furnish terminal data at a larger
7 G8 J$ e$ H; }. j5 escale in congested areas.
$ w G* Z4 t; s* ee. En Route High Altitude Charts- Provide
5 D: E# ?' |$ S+ v, ?$ e* R0 caeronautical information for en route instrument
% p6 ^% s U4 e& e* ^8 C* H' vnavigation (IFR) in the high altitude stratum.) ]0 J4 n4 G- e; L
Information includes the portrayal of jet routes,; X0 R: D) k! L% Y
identification and frequencies of radio aids, selected1 p, y9 A) l A1 Z9 v4 ]6 w: }
airports, distances, time zones, special use airspace,2 h# b) N4 b; H
and related information.
' q6 t; f( ]+ G/ O; L/ Df. Instrument Approach Procedures (IAP) Charts-
% P/ k B: S2 _$ T1 ~3 dPortray the aeronautical data which is required to: N1 O2 s" f- e3 l" S" i b
execute an instrument approach to an airport. These% R4 ~+ S9 f3 U4 i
charts depict the procedures, including all related
_+ m$ S# |# ]. x. k* mdata, and the airport diagram. Each procedure is9 k7 {/ \ B$ U5 a2 B& Q" ], r
designated for use with a specific type of electronic; a8 d! r4 I! e# T, h9 v2 M9 k& m1 m( [
navigation system including NDB, TACAN, VOR,
0 ]9 ]& Z( c, ?' k; ^ILS/MLS, and RNAV. These charts are identified by
4 w( z: H' ?+ R. a3 jthe type of navigational aid(s) which provide final% }- v% v+ g2 i
approach guidance.
1 y# O/ C- C0 i' Mg. Instrument Departure Procedure (DP) Charts-4 I; [. ?9 W- E; f* v3 n; h6 F
Designed to expedite clearance delivery and to. ~$ v3 i) e' m4 {
facilitate transition between takeoff and en route: f* i8 c/ {1 ~- p( V
operations. Each DP is presented as a separate chart
' n9 Q! B- j7 L, m6 kand may serve a single airport or more than one* o; T6 W/ g% S) U H0 U" b
airport in a given geographical location.
m7 ]. S3 t! C# l9 Wh. Standard Terminal Arrival (STAR) Charts-" d/ M/ r e& t4 u% F
Designed to expedite air traffic control arrival! t: [! v4 K5 W+ G5 q4 H
procedures and to facilitate transition between en
& B, ?% S6 l5 Q! R& h2 uroute and instrument approach operations. Each
9 f- q3 Z. t! F( Z! l) t- Q4 p. NSTAR procedure is presented as a separate chart and
" B3 R" m3 z5 o }4 jmay serve a single airport or more than one airport in9 k4 M, E5 \6 L( c v# z2 A* C8 b
a given geographical location.2 X. s' t4 O! S+ ?1 n; F5 l' J
i. Airport Taxi Charts- Designed to expedite the: [2 c1 S' Z; J, i5 t/ g3 g R
efficient and safe flow of ground traffic at an airport.
5 r3 ?1 H, i G: H# |6 rThese charts are identified by the official airport7 s( \0 A' E4 H- X1 l* s
name; e.g., Ronald Reagan Washington National
5 a# k% D! G5 l2 dAirport.
" B$ p c) u6 g1 n9 o$ ~(See ICAO term AERONAUTICAL CHART.) |
|