Doc AN/ Manual of. Radiotelephony. Approved by the Secretary General ICAO phraseologies are contained in procedures found in Annex Doc AN Approved by the Secretary General and published of amendments is announced regularly in the ICAO Journal and in the. Doc – Manual of radiotelephony – Download as PDF File .pdf), Text File ICAO Regional Director, Middle East Office, Egyptian Civil Aviation Complex.

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Of the many factors involved in the process of communication, phraseology is perhaps the most important, because it enables us to communicate quickly and effectively despite differences in language and reduces the opportunity for misunderstanding.

Ambiguous or non-standard phraseology is a frequent causal or contributory factor in aircraft accidents and incidents. Failure to use dkc phraseology can lead to misunderstanding, breakdown of the communication process and eventually to loss of separation.


The subsequent Investigation noted that it was imperative that clearance read backs about which there is doubt are not made speculatively in dc expectation that they will elicit confirmation or correction. Air Ground Communication Content source: There was no actual risk of conflict since, although LVP were still in force after earlier fog, the TWR controller was able to see the vehicle incursion and therefore withhold the imminent take off clearance.

Many national authorities also publish radiotelephony manuals which amplify ICAO provisions, and in some cases modify them to suit local conditions.

Air Ground Communication Operational Issues.

Standard Phraseology – SKYbrary Aviation Safety

The period over which the changes should be introduced has been notified by ICAO as 12 months commencing 10 Novemberi. Whilst 9342 light aircraft was lined up for departure, a vehicle made an incorrect assumption about the nature of an ambiguously-phrased ATC TWR instruction and proceeded to enter the same runway.


Non-standard phraseology is sometimes adopted unilaterally by national or local air traffic services in an attempt to alleviate problems; however, standard phraseology minimises the potential for misunderstanding.

The transition period will likely affect pilots making international IFR flights. Actual minimum separation was approximately 0. The phraseology can be consulted in “Further Reading” below.

Icao Doc – PPRuNe Forums

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Also, controllers from ATC Units in States which have not begun using the new procedures themselves should be aware that pilots ddoc other States which have done so are likely to use them.

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