Raynbeau
5th Apr 2014, 22:25
When flying at say FL 80 and the controller says. " QNH is 1015, Descend to altitude
5,000 feet." Atis says transition level is FL 65. Do you set QNH immediately or do you set it passing FL65?
Talkdownman
6th Apr 2014, 03:27
From UK IAIP ENR 1.7-3 (http://www.ead.eurocontrol.int/eadbasic/pamslight-F6B381B5EE05F0C8B969E02113A5DC31/7FE5QZZF3FXUS/EN/AIP/ENR/EG_ENR_1_7_en_2013-06-27.pdf) Para 5.3.1
When an aircraft is descended from a Flight Level to an Altitude preparatory to commencing approach for landing, ATC will pass the appropriate aerodrome QNH. On vacating the Flight Level, the pilot will change to the aerodrome QNH unless further Flight Level vacating reports have been requested by ATC, in which case, the aerodrome QNH will be set following the final Flight Level vacating report. Thereafter, the pilot will continue to fly on the aerodrome QNH until established on final approach.