2018-NE-39-AD; Amendment 39-19676; AD 2019-13-03 Trig Avionics Limited Transponders

Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2018-1081; Product Identifier 2018-NE-39-AD; Amendment 39-19676; AD 2019-13-03]
RIN 2120-AA64
Airworthiness Directives; Trig Avionics Limited Transponders
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.


SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Trig Avionics Limited TT31, Avidyne Corporation AXP340, and BendixKing/Honeywell International KT74 Mode S transponders. This AD was prompted by the discovery that the retaining cam that engages in the mounting tray may not withstand g-forces experienced during an emergency landing. This AD requires one-time inspection of the transponder installation and, depending on the findings, removal of the affected transponder for modification. The FAA is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective August 27, 2019.

Download PDF of this AD below: