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. Actual minimum separation was approximately 0.

If you wish to contribute or participate in the discussions about articles you are invited to join SKYbrary as a registered user. The subsequent Investigation noted that it was imperative that clearance read backs about which there is doubt are not iao speculatively in the expectation that they will elicit confirmation or correction.


Standard Phraseology – SKYbrary Aviation Safety

The transition period will likely affect pilots making international IFR flights. Whilst a 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.

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

Air Ground Communication Content source: Retrieved from ” https: The phraseology can be consulted in “Further Reading” below. Failure to use standard phraseology lcao lead to misunderstanding, breakdown of the communication process and eventually to loss of separation.

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

The period over which the changes should be introduced has been notified by ICAO iccao 12 months commencing 10 Novemberi.


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.

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.