elements of variable length are shown
as
Accuracy in the preparation of ATS messages
Where the standard ATS messages are transmitted by teletypewriter channels in areas where ATC computers are known to be in use, the formats and data conventions prescribed in the field tables on pages A3-5 to A3-29 shall be adhered to rigorously.
2. Examples of ATS messages
2.1 Table of contents
Message category Message type Message type designator Paragraph
Emergency Alerting Radio communication failure ALR RCF 2.2.1 2.2.2
Filed flight plan and associated update Filed flight plan Modification Cancellation Delay Departure Arrival FPL CHG CNL DLA DEP ARR 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6
Co-ordination Current flight plan Estimate Co-ordination Acceptance Logical acknowledgement CPL EST CDN ACP LAM 2.4.1 2.4.2 2.4.3 2.4.4 2.4.5
Supplementary Request flight plan Request supplementary flight plan Supplementary flight plan RQP RQS SPL 2.5.1 2.5.2 2.5.3
Note 1.— Only the ATS information, i.e. in AFTN messages only the AFTN text, is shown.
Note 2.— The numbers in the composition diagrams correspond to the field type numbers used in Section 1 of this Appendix.
2.2 Emergency messages
2.2.1 Alerting (ALR) message
2.2.1.1 Composition
3
5
(
Message Type, Number Description of Emergency –
and Reference Data
7 8
Aircraft Identification and SSR Flight Rules and – –
Mode and Code Type of Flight
A3-32 Rules of the Air and Air Traffic Services (PANS-RAC)
– 9 Type of Aircraft and Wake Turbulence Category – 10 Equipment
13 Departure Aerodrome and Time
16
Destination Aerodrome and Total Estimated Elapsed Time, Alternate Aerodrome(s)
18
–
Other Information (using more than one line if necessary)
19
–
Supplementary Information (using more than one line if necessary)
20
–
Alerting Search and Rescue Information (using more than one line if necessary) )
2.2.1.2 Example
The following is an example of an alerting message relating to an uncertainty phase, sent by Athens Approach Control to Belgrade Centre and other ATS units, in respect of a flight from Athens to Munich.
(ALR-INCERFA/LGGGZAZX/OVERDUE –FOX236/A3600-IM –C141/H-S/CD –LGAT1020 –N0430F220 B9 3910N02230W/N0415F240 B9 IVA/N0415F180 B9 –EDDM0227 EDDF –EET/LYBE0020 EDMI0133 REG/A43213 OPR/USAF RMK/NO POSITION REPORT SINCE DEP PLUS 2 MINUTES –E/0720 P/12 R/UV J/LF D/02 014 C ORANGE A/SILVER C/SIGGAH –USAF LGGGZAZX 1022 126.7 GN 1022 PILOT REPORT OVER NDB ATS UNITS ATHENS FIR ALERTED NIL)
2.2.1.2.1 Meaning
Alerting message — uncertainty phase declared by Athens due no position reports and no radio contact since two minutes after departure — aircraft identification FOX236 — IFR, military flight — Starlifter, heavy wake turbulence category, equipped with standard communications, navigation and approach aid equipment for the route, SSR transponder with Modes A (4 096 code capability) and C — ADS capability — last assigned Code 3624 — departed Athens 1020 UTC — cruising speed for first portion of route 430 knots, first requested cruising level FL 220 — proceeding on airway Blue 9 to 3910N2230W where TAS would be changed to 415 knots — proceeding on airway Blue 9 to Ivanic Grad VOR where FL 180 would be requested, maintaining TAS of 415 knots — proceeding on airway Blue 9 to Munich, total estimated elapsed time 2 hours and 27 minutes — alternate is Frankfurt — accumulated estimated elapsed times at the Belgrade and Munich FIR boundaries 20 minutes and 1 hour and 33 minutes respectively — aircraft registration A43213 — the aircraft is operated by the USAF — no position report has been received since 2 minutes after departure — endurance 7 hours and 20 minutes after take-off — 12 persons on board — portable radio equipment working on VHF 121.5 MHz and UHF 243 MHz is carried — life jackets fitted with lights and fluorescein are carried 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：Rules of the Air and Air Traffic Services(151)
