Engine Fuel and Control - Pressure Burner Sensors - Replacement
- Published
- Takes effect
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Pratt & Whitney engines must replace the Pb sensors by the effective date of November 23, 2026, following the instructions provided in the AD. Maintenance teams should track Pb sensor flight hours and years since new or last repair to ensure timely replacement. Compliance documentation should be maintained, and any alternative methods of compliance must be approved by the FAA.
Summary
The Federal Aviation Administration's Airworthiness Directive 2026-21-06 addresses safety issues in Pratt & Whitney Division engines, specifically models PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4152, PW4156, PW4156A, PW4158, PW4460, and PW4462. This directive mandates the replacement of pressure burner (Pb) sensors due to reports of tailpipe fires, loss of thrust control, and engine in-flight shutdowns caused by sensor deterioration. The AD aims to mitigate these unsafe conditions by ensuring timely sensor replacement.
What changed
This new airworthiness directive introduces a mandatory replacement requirement for Pb sensors on the specified Pratt & Whitney engines. It consolidates compliance instructions and clarifies terminology related to sensor service life, but does not expand engine model applicability or approve additional service materials beyond those already referenced. The AD also refines compliance language to improve clarity on tracking sensor usage and replacement timing.
Why it matters
This directive is critical for aviation professionals as it directly addresses a safety risk that can lead to engine failure and in-flight shutdowns. Operators and maintenance organizations must ensure compliance to prevent potential accidents and maintain airworthiness. The AD also provides clear guidance on monitoring Pb sensor life, which is essential for effective maintenance planning and regulatory adherence.
More for Pratt & Whitney PW4000
All 4- EASA SIB SAIB-2025-06High Pressure TurbinesJul 23, 2025
- EASA AD US-2022-12-12Engine - Low Pressure Turbine Stage 5 Air Seal - ReplacementJun 20, 2022
- EASA AD US-2019-06-02[Correction] Engine Fuel - Fuel Nozzle - ReplacementApr 24, 2019
- EASA AD US-2018-13-02Engine - 4th Stage Low Pressure Turbine Air Seals - ReplacementJun 18, 2018
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