航空 发表于 2011-9-29 11:47:46

Chapter 7 Airport Charts

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航空 发表于 2011-9-29 11:48:24

<P>Chapter 7<BR>Airport Charts<BR>Chapter 7 Airport Charts<BR>§7.1 Introduction<BR>§7.2 Airport Chart Information<BR>§7.1 Introduction<BR>The Airport Charts can help you find your<BR>way around the taxiways at an unfamiliar<BR>airport.<BR>When you are airborne, you have a panel<BR>full of avionics to confirm you seem to be<BR>on your own for navigation.<BR>This chart is located in one of two places in<BR>your Airway Manual:<BR>• On the back of the first approach chart<BR>• As a standalone chart located before the<BR>approach charts<BR>Formats of Airport Charts:<BR>• The “classic” chart format<BR>• The “Briefing StripTM” chart format<BR>The “classic” chart format provides<BR>communication information on the right of<BR>the chart heading, with airport information<BR>on the left.<BR>Heading of “classic” chart format<BR>Heading of “Briefing StripTM”<BR>chart format<BR>Briefing StripTM<BR>This chart format distributes the same<BR>information across the top of the chart so<BR>that you are reading it from left to right.<BR>It’s a widely used format of airport charts.<BR>§7.2 Airport Chart Information<BR>The airport chart contains four primary<BR>sections:<BR>• Heading<BR>• Plan view<BR>• Additional runway information<BR>• Takeoff and alternate minimums<BR>Plan View<BR>Heading<BR>Additional Runway<BR>Information<BR>Takeoff and Alternate<BR>Minimums<BR>§7.2.1 Heading<BR>The top of each airport chart provides<BR>standard information about airport,<BR>including the location and airport name,<BR>elevation, and communication frequencies.<BR>§7.2.1.1 Heading Border<BR>Distinct areas of the heading:<BR>• Location and Airport Name<BR>• Chart Index Number and Dates<BR>• ICAO Location Identifier and Airport<BR>Information<BR>• Communications Row<BR>Location and Airport Name<BR>Location Name/City Name<BR>Airport Name<BR>Select the right airport<BR>within a particular city<BR>Chart Index Number and Dates<BR>Chart Index Number<BR>Chart Date<BR>ICAO Location Identifier and Airport<BR>Information<BR>The airport identifier, unique to each airport, is<BR>a combination of the ICAO regional designation<BR>and the airport’s governing agency designation<BR>(IATA).<BR>Airport Identifier Airport Elevation<BR>ARP Coordinates<BR>Coordinates represent the<BR>airport location as provided by<BR>the controlling authority<BR>Communications Row<BR>ATIS Frequency<BR>Delivery Frequency<BR>Ground Frequency<BR>Departure<BR>Tower Frequency Frequency<BR>§7.2.2 Plan View<BR>The airport chart plan view portrays an<BR>overhead view of the airport, it can provide<BR>you with graphical information about the<BR>airport, such as its runways and lighting<BR>systems.<BR>Except the length and width of stop way and<BR>taxiway, lighting system, the other part of<BR>charts are portrayed on scale.<BR>§7.2.2.1 Scales, Coordinate Tick<BR>Marks and Magnetic Variation<BR>To help you measure distance, the plan view<BR>includes a scale showing both feet and<BR>meters.<BR>The scale a chart always use range from<BR>1inch=1000feet to 1inch=6000feet.<BR>Scale of the plan view of this chart is 1inch=1000feet<BR>Latitude and longitude coordinate tick marks<BR>are shown in tenths of minute increments<BR>along the inside edges of the plan view.<BR>If you are flying an aircraft with advanced<BR>navigation equipment, such as an inertial<BR>navigation system (INS), these tick marks<BR>allow you to update your position more<BR>accurately on the ramp before flight, and<BR>improve equipment accuracy during flight.<BR>Latitude and longitude<BR>coordinate tick marks<BR>The magnetic variation at the airport may be<BR>depicted graphically in the plan view.<BR>The arrow (s) enhance spatial orientation by<BR>graphically illustrating that the top of the<BR>chart is true north and therefore the<BR>orientation of the airport environment may<BR>not be squarely aligned to the plan view. If<BR>you do not see the magnetic variation arrow<BR>(s) symbol, look for the variation in the<BR>heading.<BR>Magnetic Variation<BR>Magnetic<BR>Variation<BR>Runway<BR>Number<BR>Longitude<BR>Latitude<BR>Approach<BR>Light<BR>Runway<BR>Length<BR>ARP<BR>RVR<BR>Tower<BR>Scale<BR>Runway<BR>Elevation<BR>§7.2.2.2 Runway Information<BR>The main focus of the airport diagram is to<BR>show the layout of the runways, and to<BR>provide information about the runways’<BR>lengths, surfaces, and elevations.<BR>If you need additional runway information,<BR>such as lighting systems and usable<BR>lengths, you can check them in the<BR>Additional Runway Information table,<BR>located either below the plan view or on the<BR>back side of the airport chart.<BR>The Runway Information is focused on the<BR>following items:<BR>• Runway Numbers<BR>• Runway Elevations and Length<BR>• Displaced Thresholds, Stopways, Overruns<BR>• Runway Surface<BR>• Arrester Gear and Barriers<BR>• Non-Runway Landing Areas<BR>Runway Numbers and<BR>Magnetic Direction<BR>Runway numbers are located at the end of<BR>each runway. Jeppesen also lists the<BR>actual magnetic direction of the runway,<BR>which allows you to accurately compass<BR>and heading indicator cross-check the<BR>magnetic when lined up with the runway<BR>centerline prior to flight.<BR>Runway number is<BR>magnetic unless<BR>followed by “T” for true<BR>in the far north.<BR>Runway number and, when known,<BR>magnetic direction unless followed by “T” for<BR>true in the far north.<BR>Seaplane operating area, or<BR>water runway.<BR>Closed runway. Temporarily<BR>closed runways will retain<BR>their length and runway<BR>numbers.<BR>Runway Elevations and Length<BR>Elevations of the runways’ entrance and the<BR>lengths of the runways are usually marked<BR>at the end and the middle of the runways.<BR>Runway number and<BR>Magnetic Direction<BR>Length<BR>of 07R<BR>Entrance<BR>elevation<BR>of 07L<BR>Displaced Thresholds and Stop-ways<BR>Displaced thresholds reduce the length<BR>of runway available for landings. This<BR>portion of runway prior to a displaced<BR>threshold is available for takeoffs in<BR>either direction, and landings only from<BR>the opposite direction.<BR>Stopways or overruns are areas<BR>beyond the takeoff runway at least as<BR>wide as the runway and centered upon<BR>its extended centerline. They may be<BR>used to decelerate an airplane during<BR>an aborted takeoff.<BR>Runway Surface<BR>In the plan view of the charts, different<BR>symbols are used to portray different<BR>runway surfaces.<BR>Paved runway<BR>Unpaved runway, such as turf,<BR>dirt, or gravel. The type of<BR>surface is usually printed on<BR>the chart next to the runway.<BR>Seaplane operating area or<BR>water runway. Dashed lines<BR>indicate the operating area.<BR>Pierced steel planking (PSP)<BR>Area under construction<BR>Arrester Gear and Barriers<BR>Certain airports are equipped with a means<BR>of rapidly stopping military aircraft on a<BR>runway. This equipment, normally referred<BR>to as emergency arresting gear, generally<BR>consists of pendant cables supported over<BR>the runway surface by rubber “donuts.”<BR>Although most devices are located in the<BR>overrun areas, a few of these arresting<BR>systems have cables stretched over<BR>operational areas the ends of a runway.<BR>Unidirectional arrester gear<BR>Bidirectional arrester gear<BR>Jet barrier<BR>Non-Runway Landing Areas<BR>In addition to runways, the airport chart<BR>indicated landing areas as follows:<BR>Helicopter landing pad<BR>Authorized landing area (may be<BR>used on Australia charts with limited<BR>runway source information<BR>§7.2.2.3 Taxiways and Aprons<BR>Taxiways link airport parking areas to the<BR>runways. On the airport, you can easily<BR>taxiways by their continuous yellow<BR>centerline stripes. On the airport chart, you<BR>can distinguish taxiways and aprons from<BR>runways by their light gray color.<BR>Taxiway and apron<BR>Permanently closed Taxiway<BR>Occasionally, the chart may show the<BR>locations of holding positions.<BR>These taxiway markings help keep aircraft<BR>clear of runways and, at controlled<BR>airports, mark the point that separates the<BR>responsibilities of ground control from<BR>those of the tower.<BR>Hold lines may be located at taxiway<BR>intersections.<BR>Designated stop bar or<BR>designated holding position<BR>Category Ⅱ/Ⅲ holding<BR>position<BR>§ 7.2.2.4 Airport Facilities<BR>The airport diagram includes symbols<BR>depicting the main buildings at the<BR>airport and any equipment on the airport<BR>that may help pilots in navigation and<BR>flight planning.<BR>Buildings<BR>ARP<BR>Airport Identification<BR>Beacon<BR>Navids<BR>RVR<BR>RVR with letter<BR>Cone<BR>Tee<BR>Tetrahedron<BR>Buildings<BR>Large Buildings<BR>Buildings<BR>Airport Reference Point<BR>The airport reference point<BR>(ARP) is at the approximate<BR>geographic center of all usable<BR>runway surfaces, and is the<BR>point from which official<BR>latitude and longitude<BR>coordinates are derived. The<BR>center of the crosshairs marks<BR>the ARP’s exact location.<BR>When the ARP is on a runway<BR>centerline, an arrow points to<BR>its exact location.<BR>Navigational aids<BR>On-airport navaid, such as<BR>VOR ,NDB ,or LCTR<BR>(locators, other than<BR>locators associated with<BR>ILS). When navaids are<BR>offset from the runway, you<BR>may need to make<BR>significant adjustments in<BR>your final approach course,<BR>once the runway is in<BR>slight.<BR>RVR measuring site (transimissometer). The<BR>primary instrument runways at major airports<BR>may have as many as three transimissometers<BR>providing RVR readings, which include<BR>touchdown RVR, mid-RVR, and rollout RVR.<BR>RVR<BR>RVR with letter<BR>RVR measuring devices<BR>Wind direction indicators<BR>Cone or wind sock. It is used at both<BR>towered and non-towered airports. It can<BR>provide the present wind conditions near the<BR>runway’s touchdown zone.<BR>Wind tee. Determine the wind direction from<BR>a wind tee, but it doesn't indicate wind<BR>intensity or gusty conditions. The tail of the<BR>tee aligns itself like a weather vane into the<BR>wind, so you can take off or land on the<BR>runway that most closely parallels the<BR>direction of the tee.<BR>Tetrahedron. It is a landing<BR>direction indicator, usually located<BR>near a wind direction indicator. It<BR>may swing around with the small<BR>end pointing into the wind, or it may<BR>be manually positioned to show<BR>landing direction.<BR>§ 7.2.5 Lights and Beacons<BR>The majority of lighting symbols on the<BR>airport diagram are approach lights and<BR>beacons.<BR>• Approach Lights<BR>• Beacons<BR>Approach Lights<BR>Approach lights are normally shown to scale<BR>in a pattern similar to the way they appear<BR>at the airport.<BR>ALSF-I<BR>Approach<BR>light system<BR>with<BR>sequenced<BR>flashing<BR>lights<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>ALSF-II<BR>Approach<BR>light system<BR>with<BR>sequenced<BR>flashing lights<BR>and red side<BR>row lights the<BR>last 1,000′<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>MALSR<BR>Medium<BR>intensity<BR>approach<BR>light<BR>system<BR>with<BR>runway<BR>alignment<BR>indicator<BR>lights.<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>MALSF<BR>Medium<BR>intensity<BR>approach<BR>light system<BR>with<BR>sequenced<BR>flashing<BR>lights<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>ODALS<BR>Omnidirectional<BR>approach<BR>light system<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>RAIL<BR>Runway<BR>alignment<BR>indicator<BR>lights<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>CALVERT<BR>CALVERT<BR>Approach<BR>Lights<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>CALVERT<BR>(CATⅡ/Ⅲ)<BR>CALVERT<BR>(CATⅡ/Ⅲ)<BR>Approach<BR>Lights<BR>Real<BR>Composing<BR>Chart<BR>Name Abbreviation Symbol<BR>When approach lights extend to a displaced<BR>threshold, you see the following symbol:<BR>Beacons<BR>Beacons are depicted on the airport diagram<BR>as stars “ ”.When the depicted beacon<BR>is the airport identification beacon, the star<BR>is circled “ ” and may appear with its<BR>MSL elevation.<BR>Reference Points<BR>A representative selection of reference<BR>points known to Jeppesen is depicted in<BR>the airport plan view. When provided, the<BR>elevation of reference points is expressed<BR>as above mean sea level.<BR>Lighted Pole<BR>Pole Line<BR>Railway<BR>Road<BR>Building<BR>Tower<BR>Unknown<BR>Structure<BR>Man-made<BR>Reference<BR>Points<BR>Trees<BR>Bluff<BR>Nature Terrain<BR>Natural<BR>Reference<BR>Points<BR>§7.2.3 Additional Runway<BR>Information<BR>Some required airport information, such as lighting<BR>systems and usable lengths, cannot be<BR>portrayed in enough detail in the airport chart<BR>plan view.<BR>These information appears below the plan view in<BR>the box titled “Additional Runway Information.”<BR>This table provides information for each runway<BR>charted in the airport diagram, except for<BR>permanently closed runways, ultralight runways,<BR>and ski strips.<BR>Additional Runway Information<BR>of Hong Kong INTL<BR>Runway Light System RVR<BR>Runway Width<BR>Usable Length<BR>Note<BR>The first column lists each runway, grouped<BR>in approach end pairs. Three types of<BR>information are provided for each runway:<BR>• Lighting systems and equipment<BR>• Usable lengths<BR>• Width<BR>§7.2.3.1 Lighting Systems and<BR>Equipment<BR>Runway light System includes HIRL 、CL、TDZ. The<BR>interval of HIRL is 60m;interval of CL is 15(30)m<BR>Runway Light System<BR>(1) HIRL<BR>The HIRL systems generally have variable intensity<BR>controls that can be adjusted from the control tower.<BR>When there is not an operating control tower, you<BR>may be able to adjust the intensity using the<BR>Common Traffic Advisory Frequency (CTAF) or<BR>UNICOM frequency.<BR>On instrument runways, edge lights are white until the<BR>last 2,000’ (or half of the runway, if less than<BR>2,000’), where amber replaces white.<BR>(2) CL<BR>Runway centerline lights (CL) are flushmounted<BR>in the runway to help pilots<BR>maintain the centerline during takeoff and<BR>landing.<BR>Standard centerline lights are spaced at<BR>intervals of 50 feet, beginning 75 feet from<BR>the landing threshold and extending to<BR>within 75 feet of the opposite end of the<BR>runway.<BR>At the approach end of the runway,<BR>centerline lights are white.<BR>They change to alternating red and white<BR>lights when pilots have 3,000 feet of<BR>remaining runway, and they are all red for<BR>the last 1,000 feet of runway. These lights<BR>are bidirectional so pilots can see the<BR>correct color in the direction from which<BR>pilots are approaching them.<BR>Non-standard centerline lights are noted in<BR>parentheses:<BR>• CL (white): All lights are white for the full<BR>length of the runway.<BR>• CL (non-std): Non-standard, configuration<BR>unknown.<BR>• CL(50W,20R&amp;W,20R ): Non-standard,<BR>configuration known. First 5,000’ white<BR>lights; next 2,000’ alternating red and<BR>white lights; last 2,000’ red lights.<BR>(3) TDZ<BR>TDZ (Touchdown zone lighting) helps pilots<BR>identify the touchdown zone when visibility is<BR>reduced. The lighting consists of a series of<BR>white lights flush-mounted in the runway.<BR>The lights begin approximately 100feet from<BR>the landing threshold and extend 3,000 feet<BR>down the runway or to the midpoint of the<BR>runway, whichever is less. These lights are<BR>visible only from the approach end of the<BR>runway.<BR>(4) HST<BR>There will also contain HST in the runway<BR>lighting system.<BR>High-speed taxiway turnoff lights are flushmounted<BR>alternating green and yellow<BR>lights spaced at 50-foot intervals. They<BR>define the curbed path from near the<BR>runway centerline to the center of the<BR>intersecting taxiway. Taxiway centerline<BR>lights are green and taxiway edge lights<BR>are blue.<BR>Approach Lights<BR>Airport lighting systems range from the<BR>simple lighting needed for VFR night<BR>landings to sophisticated systems that<BR>guide you to the runway in IFR conditions.<BR>Be sure to familiarize yourself with each type<BR>of lighting and its significance to VFR , as<BR>well as IFR, operations.<BR>Approach light---ALSF-Ⅱ<BR>Availability of RVR Measuring<BR>Equipment<BR>RVR is listed in this section of the airport<BR>chart when the specific runway has RVR<BR>measuring equipment. Unless otherwise<BR>stated, this equipment includes measuring<BR>stations at the touchdown zone, midrunway,<BR>and rollout end. The RVR<BR>measuring site may have an identifying<BR>letter or number.<BR>RVR<BR>§7.2.3.2 Usable Lengths<BR>When usable runway lengths differ from<BR>those depicted in the airport plan view, the<BR>lengths are specified in the “Usable<BR>Lengths” columns in the Additional<BR>Runway Information section of the airport<BR>chart.<BR>Stopways, overruns, and clearways are not<BR>included in these figures.<BR>Blank columns indicate that the runway<BR>length depicted in the airport plan view<BR>applies.<BR>An NA in any of these columns indicates<BR>that takeoffs or landings are not authorized<BR>for the runway shown.<BR>Usable lengths<BR>When taking off, the usable runway length is<BR>limited, the length detonated is from the<BR>point that the aircrafts begin to taking off<BR>to the end of usable length. Stopways and<BR>clearways are not included.<BR>When the usable length is blank, the runway<BR>length depicted in the airport plan view can<BR>be used.</P>
<P>§7.2.3.3 Runway Width<BR>The last column of the Additional Runway<BR>information section lists the runway width.<BR>Knowing the widths of an airport’s runways<BR>can help compensate for runway-width<BR>illusion.<BR>A wider-than-usual runway can have the<BR>opposite effect, with the risk of leveling out<BR>high and landing hard, or overshooting the<BR>runway.<BR>A narrower-than-usual runway can create<BR>the illusion that the aircraft is at a higher<BR>altitude than it actually is. If you do not<BR>realize the runway is narrow, the illusion<BR>may entice you to fly a lower approach,<BR>with the risk of striking objects along the<BR>approach path, or landing short.</P>
<P>You can also determine the runway width by<BR>counting the number of runway threshold<BR>stripes, as indicated in the following table:<BR>§7.2.3.4 Runway Restriction<BR>Notes<BR>Note underneath the additional runway<BR>information table may provide several<BR>types of information.<BR>Runway is grooved; PAPI of 07L is fixed at the left of runway , angle 3°;<BR>PAPI of 25R is fixed at the right of runway , angle 3°; HSTIL are located at<BR>High-speed taxiways A4 and A6.<BR>§7.2.4 Minimums<BR>The bottom part of an airport chart includes<BR>up to three separate sections:<BR>• Takeoff minimums<BR>• Obstacle departure procedures<BR>• Alternate minimums<BR>Takeoff minimums, which list the RVR and<BR>VIS required during takeoff, are usually<BR>depicted on Jeppesen chart worldwide.<BR>Takeoff Minimums<BR>Obstacle Departure Procedures<BR>Obstacle departure procedures, depicted on<BR>United States charts under certain criteria,<BR>provide a textual description of flight<BR>procedures. These help you transition<BR>between the airport and the enroute<BR>structure while maintaining necessary<BR>obstacle clearance margins, particularly in<BR>a non-radar environment.<BR>Alternate Minimums<BR>Alternate minimums are usually charted in<BR>the United States to define the ceiling and<BR>visibility required for an airport to be<BR>designated as an alternate airport.<BR>§7.2.4.1 Takeoff Minimums<BR>• The takeoff minimums table lists the RVR<BR>and VIS minimums required to ensure<BR>visual guidance during the takeoff run.<BR>• A ceiling is not required for take-off, except<BR>when specified by the governing authority<BR>to ensure obstacle clearance.<BR>• When takeoff minimums are specified in<BR>both ceiling and visibility, both values must<BR>be available to the pilot.<BR>When minimum vary between runways,<BR>separate columns show the minimums that<BR>apply to each runway, with the best<BR>opportunity runways on the left.<BR>Each runway column shows the minimums, in<BR>ascending order, left to right.<BR>The conditions for those minimums appear at<BR>the top of each column.<BR>Minimums are also based on aircraft category<BR>under JAR OPS, or on number of engines<BR>under United States Operations<BR>Specifications.<BR>The minimums, with conditions, appear in<BR>one or more columns:<BR>• Standard takeoff minimums<BR>• Lower-than-standard published takeoff<BR>minimums<BR>• Higher-than-standard takeoff minimums<BR>Standard Takeoff Minimums<BR>Standard takeoff minimums are defined by<BR>the governing authorities and apply<BR>regardless of the lighting and other<BR>equipment available to aid the pilot, unless<BR>the governing authority has published<BR>more restrictive minimums.<BR>The Standard takeoff minimums of America<BR>are: One or Two engines, RVR 50(5000FT)<BR>or VIS 1mile; Three or Four engines, RVR<BR>24(2400FT) or VIS 1/2mile.<BR>Lower-than-standard Published<BR>Takeoff Minimums<BR>Lower-than-standard published takeoff<BR>minimums may be published based on<BR>availability of runway markings, lighting,<BR>and/or low visibility reporting equipment<BR>such as RVR. The required conditions are<BR>listed in the column heading.<BR>Higher-than-standard Takeoff<BR>Minimums<BR>Higher-than-standard takeoff minimums may<BR>be public shed when obstructions or other<BR>factors require greater visibility during IFR<BR>climb out. These higher minimums may be<BR>reduced if the aircraft can meet certain<BR>requirements, such as a specified climb<BR>gradient.<BR>CL operative,<BR>centre line of<BR>the runway<BR>can be seen.<BR>One of the<BR>TDZ, middle<BR>and end of the<BR>runaway RVR<BR>inoperative,<BR>meanwhile the<BR>other two<BR>operative, the<BR>minimum for<BR>take off is<BR>RVR600FT.<BR>Minimum for<BR>adequate Vis<BR>Reference<BR>One or Two<BR>engines,<BR>RVR<BR>50(5000FT)<BR>or VIS 1mile;<BR>Three or Four<BR>engines,<BR>RVR<BR>24(2400FT)<BR>or VIS<BR>1/2mile.<BR>When take off<BR>from 6R, the<BR>light、visual<BR>reference<BR>couldn’t meet<BR>the standard,<BR>the take off<BR>minimum<BR>require ceiling<BR>to be<BR>200ft,meanwhi<BR>le VIS 1.25SM.<BR>Take off from<BR>6R, keep<BR>Minimum<BR>climb grads<BR>281FT/MIN<BR>until climb to<BR>400FT.<BR>The following is a part of Hong Kong airport which<BR>is revised on October 28th,2005. The minimums<BR>for the air carriers which adopt JAA and FAR121<BR>take off from Hong Kong are listed in the<BR>following chart.<BR>For all airports authorized Category Ⅱ/Ⅲ, if the RVR/VIS is below<BR>400m, It is required to establish and apply LVP procedure when<BR>taking off .<BR>Takeoff minimums published under the title “AIR<BR>CARRIER (JAA)” are based on JAR OPS-1<BR>Subpart E. These minimums are provided for<BR>operators not applying takeoff minimums as<BR>specified under AIR CARRIER .They are shown<BR>in the following table.<BR>The criterion of this table is the category of aircraft,<BR>but not according to the number of engines, as<BR>FAR dose.<BR>§7.2.4.2 Obstacle Departure<BR>Procedures<BR>Departure procedures are used after takeoff to<BR>provide a transition between the airport and the<BR>enroute structure. They may be published:<BR>• To help simplify complex clearance delivery<BR>procedures<BR>• Reduce frequency congestion<BR>• Ensure obstacle clearance<BR>• Control the flow of traffic around an airport<BR>• Reduce fuel consumption<BR>• Include noise abatement procedures<BR>Textual departure procedures for obstacle<BR>clearance can be found below the<BR>minimum columns at the bottom of many<BR>United States airport charts, under the title<BR>“Takeoff &amp; Obstacle Departure<BR>Procedure.”</P>
<P>§7.2.4.3 Alternate Minimums<BR>When preparing your IFR flight plan, you must<BR>consider the weather reports and forecasts for<BR>your destination airport at your estimated time of<BR>arrival, plus or minus one hour.<BR>If the weather conditions are poorer than those<BR>specified by the governing agency, you must list<BR>an alternate airport on your flight plan.<BR>To qualify as an alternate, the airport you select,<BR>and its forecasted weather for your arrival time,<BR>must meet certain conditions.</P>
<P>&nbsp;</P>

coindong 发表于 2011-10-9 16:38:03

Chapter 8
Differences Between
Jeppesen Database & Charts

thunderland 发表于 2013-11-11 23:57:48

Thanks for sharing!

信恒毅 发表于 2013-12-16 13:55:27

下来看看学习一下

tonyblairer 发表于 2014-5-27 19:01:42

很好的资料,谢谢分享
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