AD 2014-05-27
Effective 05/02/2014 · Published 03/28/2014
Airworthiness Directives; Rockwell Collins, Inc. Transponders
Summary
We are adopting a new airworthiness directive (AD) for certain Rockwell Collins TPR-720 and TPR-900 Mode select (S) transponders that are installed on airplanes. This AD was prompted by the identification that the TPR-720 and TPR-900 Mode S transponders respond intermittently to Mode S interrogations from both ground-based and traffic collision avoidance system (TCAS-) equipped airplanes. This AD requires testing an…