AD 2014-05-27

final rule
Data completeness: 80%

Airworthiness Directives; Rockwell Collins, Inc. Transponders

AD Number
2014-05-27
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2013-0966
FR Citation
79 FR 17397

Unsafe Condition

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.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Test and calibrate the alignment of the TPR-720 and TPR-900 Mode S transponders. Remove and reinstall the transponders as necessary.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

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Affected Aircraft

Rockwell Collins TPR-720 and TPR-900 Mode S transponders installed on airplanes, including but not limited to Boeing Models 737, 757, and 767.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

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View Official Source ↗