This document contains explanations on newly developed acceptable means of compliance (AMC) and guidance material
(GM), which are intended to complement the implementing rules (IRs) on aircraft tracking and underwater locating
devices (ULDs).
The AMC and GM are related to the following topics:
— Minimum performance objectives and guidance for an aircraft tracking system; and
— Requirement to install a ULD on board an aeroplane performing long-range over-water flight.

The objective of this Decision is to amend the acceptable means of compliance (AMC) and guidance material (GM) to
Annex I (Part 21) as follows:
— Introduce into the text of GM 21.A.101 the amendments developed by the Continuous Improvement Team (CIT);
and
— Update the AMC to 21.A.143, 21.A.243, 21.A.14(b), 21.A.112B(b) and 21.A.432B(b) Flight Test Operations Manual
(FTOM), and create a new AMC No 3 to Appendix XII to introduce new means for test organisations (part of a
design organisation approval (DOA)/production organisation approval (POA)) to demonstrate the compliance of a
lead flight test engineer (LFTE) based on a previous title (i.e. a holder of a national licence or a person already
nominated as an LFTE by another organisation).
The amendments are expected to improve harmonisation with the Federal Aviation Administration (FAA) and Transport
Canada Civil Aviation (TCCA) and to reduce the regulatory burden for design organisations