AMC1 ACNS.D.AC.020 Altitude source

• ED Decision 2013/031/R found in: GM Remote Aerodrome Air Traffic Services (ED 2019/004/R) Issue 2 (Jul 2020)

AMC1 ACNS.D.AC.020 Altitude source ED Decision 2013/031/R (a) Altimeters compliant with JAA TGL No 6 are an approved and acceptable means of compliance for the altitude source. (b) Altimeters with a pressure altitude resolution lower than or equal to 7,62 m (25 ft) is an approved and acceptable means of compliance. Note: Altitude source resolution of 7,62 m (25 ft) or better is required for aeroplanes intended to be used for international air transport as defined in ICAO Annex 6 Part 1 — 6.19. (c) An altimeter with a pressure altitude resolution lower than or equal to 30 m (100 ft) and greater than 7.62 m (25 ft) is an approved and acceptable means of compliance for aircraft provided that the flight deck interface provides a means to inhibit the transmission of pressure altitude information for aircraft equipped with Gillham encoded altitude Note: It is not recommended to install altimeters with a Gillham altitude encoder interface. (d) Manual or automatic selection of the altitude source are acceptable means of compliance