Airworthiness Directives; Rockwell Collins, Inc. Transponders
airworthiness · Rule · Final rule. · Published 2014-03-28 · Effective 2014-05-02 · 79 FR 17397
Document
Document number
2014-05202
Federal Register citation
79 FR 17397
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2014-03-28
Effective date
2014-05-02
FAA docket
Docket No. FAA-2013-0966
Abstract
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 and calibration of the alignment of the transponders. We are issuing this AD to correct the unsafe condition on these products.