IANS ATC Phraseology RTF 1 An Introduction to

IANS ATC Phraseology RTF 1 An Introduction to Radiotelephony (RTF) papavasileiou

IANS ATC Objective To explain the need for, and appreciate the use of, ICAO approved RTF phraseology in order to be able to perform communication effectively. papavasileiou

IANS ATC Communication? A process that consists of exchange of information: i. e. any behavior that provides info to another person or influences (intentionally or not!) the other person. papavasileiou

IANS ATC Phraseology Facts! Ø 98% of all incidents in aviation are due to human error. Ø 70% of all known incidents are due to breakdowns in communication between pilots, controllers, or both. papavasileiou

IANS ATC Phraseology Solution = Standard Phraseology! papavasileiou

IANS ATC Transmission Technique Ø Normal conversational speech Ø Clear and concise RTF Ø Pronunciation and intonation Ø Imprecise transmission of numbers Ø Avoid hesitations - ‘err!’ Ø Avoid ambiguous phrases Ø Avoid ‘clipped’ transmissions papavasileiou

IANS ATC Phraseology Ø English is the language normally used by ground stations ( where this is not the case, English should be available, upon request) Ø The ICAO word spelling alphabet shall be used in all ATC speech communications. Ø Very common abbreviations such as QNH, VMC, IFR, RVR, etc. may be spoken without the use of the alphabet - provided that no risk of misunderstanding can exist. papavasileiou

IANS ATC Clear & Concise RTF! PJF BBI Ø SAK ‘KLM 243 proceed direct BBI, further clearance from Frankfurt Radar …. (freq)’ Ø Aircraft entered hold at BBI but should have continued to SAK ! Correct RTF should have been: Ø ‘KLM 243 proceed direct BBI, contact Frankfurt Radar …. (freq)’ papavasileiou

IANS ATC Clear & Concise RTF (2) Incorrect “DLH 563 turn right heading 210º, descend to FL 250 and contact EDDL 120. 05” Correct Ø “DLH 563 turn right heading 210º” Next transmission Ø “DLH 563 descend to FL 250” Next transmission Ø “DLH 563 contact EDDL 120. 05” papavasileiou

IANS ATC Punctuation & Intonation Ø ‘I don’t think! I know!’ Ø ‘I don’t think I know? ’ papavasileiou

IANS ATC Imprecise TX of Numbers! 12055 12015 125. 50 120. 55 “KLM 552 contact radar on one twenty five” papavasileiou

IANS ATC Ambiguous Phrases ‘GBDAL descend to five zero’ Pilot descended to 500 ft. Aircraft was meant to descend to 2500 ft! Correct phraseology: ‘GBDAL descend to (altitude) two thousand five hundred feet’ papavasileiou

IANS ATC Phraseology Remember! Ø K. I. S. S! Ø No ‘Swedish Chef!’ Ø Don’t talk too fast - it will take longer! Ø We tend to hear what we expect to hear - LISTEN OUT! papavasileiou

IANS ATC papavasileiou

IANS ATC The End papavasileiou