EASA AD US-2022-06-06
Flight Controls - Rudder Pedal Cover Assembly Fasteners - Modification
Summary
Federal Aviation Administration Airworthiness Directive 2022-06-06 is a final rule addressing certain Boeing 737 series airplanes, including models 737-600, -700, -700C, -800, -900, -900ER, 737-8, and 737-9. It mandates modifications to the rudder pedal cover and shroud assemblies to prevent fasteners from loosening and interfering with rudder pedal operation. This directive aims to enhance flight control safety by ensuring reliable rudder pedal function.
What Changed
This AD supersedes AD 2017-14-13 by expanding applicability to include additional Boeing 737 models and line numbers. It replaces the previous torque check requirement with a mandatory modification of the rudder pedal cover and shroud assemblies to a new design that prevents fastener back-out. The AD also limits installation of affected parts unless they meet the new modification standards.
Why It Matters
The directive addresses a critical safety issue where loose rudder pedal cover fasteners can restrict rudder pedal movement, potentially causing aborted takeoffs or runway excursions. For operators and maintenance teams, compliance ensures continued safe operation of affected Boeing 737 aircraft by preventing control interference. It also clarifies part interchangeability and installation restrictions to maintain configuration control.
What To Do
Operators of affected Boeing 737 models must modify the rudder pedal cover and shroud assemblies according to Boeing Requirements Bulletin 737-27A1314 RB, Revision 2, dated July 6, 2021. They must also adhere to installation limitations for affected parts. The compliance deadline for these actions is June 16, 2022.
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