Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4140

c) information regarding the readability of the aircraft transmission. 5.2.1.8.3 PANS.— The test transmission and reply thereto should be recorded at the aeronautical station. 5.2.1.8.4 PANS.— When the tests are made, the following readability scale should be used: Readability Scale 1 Unreadable 2 Readable now and then 3 Readable but with difficulty 4 Readable 5 Perfectly readable 5.2.1.9 Exchange of communications 5.2.1.9.1 Communications shall be concise and unambiguous, using standard phraseology whenever available. 5.2.1.9.1.1 Recommendation.— Abbreviated procedures should only be used after initial contact has been established and where no confusion is likely to arise. Channel Transmitted as Radio management panel setting for communication equipment with 25 kHz (5 digits) 8.33/ 25 kHz (6 digits) 118.000 ONE ONE EIGHT DECIMAL ZERO 118.00 118.000 118.025 ONE ONE EIGHT DECIMAL ZERO TWO 118.02 118.025 118.050 ONE ONE EIGHT DECIMAL ZERO FIVE 118.05 118.050 118.075 ONE ONE EIGHT DECIMAL ZERO SEVEN 118.07 118.075 118.100 ONE ONE EIGHT DECIMAL ONE 118.10 118.100 24/11/05 No. 80 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume II 1/11/01 5-12 5.2.1.9.2 Acknowledgement of receipt. The receiving operator shall make certain that the message has been received correctly before acknowledging receipt. Note.— Acknowledgement of receipt is not to be confused with acknowledgement of intercept in radiotelephony network operations. 5.2.1.9.2.1 When transmitted by an aircraft station, the acknowledgement of receipt of a message shall comprise the call sign of that aircraft. 5.2.1.9.2.2 PANS.— An aircraft station should acknowledge receipt of important air traffic control messages or parts thereof by reading them back and terminating the readback by its radio call sign. Note 1.— Air traffic control clearances, instructions and information requiring readback are specified in PANS-ATM (Doc 4444). Note 2.— The following example illustrates the application of this procedure: (ATC clearance by network station to an aircraft) Station: TWA NINE SIX THREE MADRID Aircraft: MADRID TWA NINE SIX THREE — GO AHEAD Station: TWA NINE SIX THREE MADRID — ATC CLEARS TWA NINE SIX THREE TO DESCEND TO NINE THOUSAND FEET Aircraft (acknowledging): CLEARED TO DESCEND TO NINE THOUSAND FEET — TWA NINE SIX THREE Station (denoting accuracy of readback): MADRID 5.2.1.9.2.3 When acknowledgement of receipt is transmitted by an aeronautical station: 1) to an aircraft station: it shall comprise the call sign of the aircraft, followed if considered necessary by the call sign of the aeronautical station; 2) to another aeronautical station: it shall comprise the call sign of the aeronautical station that is acknowledging receipt. 5.2.1.9.2.3.1 PANS.— An aeronautical station should acknowledge position reports and other flight progress reports by reading back the report and terminating the readback by its call sign, except that the readback procedure may be suspended temporarily whenever it will alleviate congestion on the communication channel. 5.2.1.9.2.4 PANS.— It is permissible for verification for the receiving station to read back the message as an additional acknowledgement of receipt. In such instances, the station to which the information is read back should acknowledge the correctness of readback by transmitting its call sign. 5.2.1.9.2.5 PANS.— If both position report and other information — such as weather reports — are received in the same message, the information should be acknowledged with the words such as “WEATHER RECEIVED” after the position report has been read back, except when intercept of the information is required by other network stations. Other messages should be acknowledged, the aeronautical station transmitting its call sign only. 5.2.1.9.3 End of conversation. A radiotelephone conversation shall be terminated by the receiving station using its own call sign. 5.2.1.9.4 Corrections and repetitions 5.2.1.9.4.1 When an error has been made in transmission, the word “CORRECTION” shall be spoken, the last correct group or phrase repeated, and then the correct version transmitted. 5.2.1.9.4.2 If a correction can best be made by repeating the entire message, the operator shall use the phrase “CORRECTION, I SAY AGAIN” before transmitting the message a second time. 5.2.1.9.4.3 Recommendation.— When an operator transmitting a message considers that reception is likely to be difficult, he should transmit the important elements of the message twice. 5.2.1.9.4.4 If the receiving operator is in doubt as to the correctness of the message received, he shall request repetition either in full or in part. 5.2.1.9.4.5 If repetition of an entire message is required, the words “SAY AGAIN” shall be spoken. If repetition of a portion of a message is required, the operator shall state: “SAY AGAIN ALL BEFORE...(first word satisfactorily received)”; or “SAY AGAIN...(word before missing portion) TO...(word after missing portion)”; or “SAY AGAIN ALL AFTER...(last word satisfactorily received)”. 5.2.1.9.4.6 Recommendation.— Specific items should be requested, as appropriate, such as “SAY AGAIN ALTIMETER”, “SAY AGAIN WIND”. 5.2.1.9.4.7 If, in checking the correctness of a readback, an operator notices incorrect items, he shall transmit the words “NEGATIVE I SAY AGAIN” at the conclusion of the 24/11/05 No. 80 2007/70/II. szám Chapter 5 Annex 10 — Aeronautical Telecommunications 5-13 1/11/01 readback followed by the correct version of the items concerned. 5.2.1.9.5 “Operations normal” reports PANS.— When “operations normal” reports are transmitted by aircraft, they should consist of the prescribed call followed by the words “OPERATIONS NORMAL”. 5.2.2 Establishment and assurance of communications 5.2.2.1 Communications watch/ 5.2.2.1 Hours of service 5.2.2.1.1 During flight, aircraft stations shall maintain watch as required by the appropriate Authority and shall not cease watch, except for reasons of safety, without informing the aeronautical station(s) concerned. 5.2.2.1.1.1 Aircraft on long over-water flights, or on flights over designated areas over which the carriage of an emergency locator transmitter (ELT) is required, shall continuously guard the VHF emergency frequency 121.5 MHz, except for those periods when aircraft are carrying out communications on other VHF channels or when airborne equipment limitations or cockpit duties do not permit simultaneous guarding of two channels. 5.2.2.1.1.2 Aircraft shall continuously guard the VHF emergency frequency 121.5 MHz in areas or over routes where the possibility of interception of aircraft or other hazardous situations exist, and a requirement has been established by the appropriate authority. 5.2.2.1.1.3 Recommendation.— Aircraft on flights other than those specified in 5.2.2.1.1.1 and 5.2.2.1.1.2 should guard the emergency frequency 121.5 MHz to the extent possible. 5.2.2.1.1.4 The user of the air-to-air VHF communications channel shall ensure that adequate watch is maintained on designated ATS frequencies, the frequency of the aeronautical emergency channel, and any other mandatory watch frequencies. 5.2.2.1.2 Aeronautical stations shall maintain watch as required by the appropriate Authority. 5.2.2.1.3 Aeronautical stations shall maintain a continuous listening watch on VHF emergency channel 121.5 MHz during the hours of service of the units at which it is installed. Note.— See Annex 10, Volume V, 4.1.3.1.1 for provisions related to the utilization of 121.5 MHz at aeronautical stations. 5.2.2.1.4 When it is necessary for an aircraft station or aeronautical station to suspend operation for any reason, it shall, if possible, so inform other stations concerned, giving the time at which it is expected that operation will be resumed. When operation is resumed, other stations concerned shall be so informed. 5.2.2.1.4.1 When it is necessary to suspend operation beyond the time specified in the original notice, a revised time of resumption of operation shall, if possible, be transmitted at or near the time first specified. 5.2.2.1.5 Recommendation.— When two or more ATS frequencies are being used by a controller, consideration should be given to providing facilities to allow ATS and aircraft transmissions on any of the frequencies to be simultaneously retransmitted on the other frequencies in use thus permitting aircraft stations within range to hear all transmissions to and from the controller. 5.2.2.2 Principles of network operation 5.2.2.2 (HF communications) 5.2.2.2.1 PANS.— The aeronautical stations of a radiotelephony network should assist each other in accordance with the following network principles, in order to provide the air-ground communication service required of the network by aircraft flying on the air routes for which the network is responsible. 5.2.2.2.2 PANS.— When the network comprises a large number of stations, network communications for flights on any individual route segment should be provided by selected stations, termed “regular stations” for that segment. Note 1.— The selection of stations to act as regular stations for a particular route segment will, where necessary, be undertaken by regional or local agreement, after consultation, if necessary, between the States responsible for the network. Note 2.— In principle, the regular stations will be those serving the locations immediately concerned with flights on that route segment, i.e. points of take-off and landing, appropriate flight information centres or area control centres and, in some cases, additional suitably located stations required to complete the communication coverage or for intercept purposes. Note 3.— In selecting the regular stations, account will be taken of the propagation characteristics of the frequencies used. 5.2.2.2.3 PANS.— In areas or on routes where radio conditions, length of flights or distance between aeronautical stations require additional measures to ensure continuity of air-ground communication throughout the route segment, the regular stations should share between them a responsibility of 24/11/05 No. 80 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume II 1/11/01 5-14 primary guard whereby each station will provide the primary guard for that portion of the flight during which the messages from the aircraft can be handled most effectively by that station. 5.2.2.2.4 PANS.— During its tenure of primary guard, each regular station should, among other things:

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