Superseded. This AD was superseded by AD 2025-20-14. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2018-26-03
Effective 01/31/2019 · Published 12/27/2018
Airworthiness Directives; The Boeing Company Airplanes
Summary
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 757-200 series airplanes. This AD was prompted by reports of uncommanded movement of the captain's and first officer's seats. This AD requires, for the captain's and first officer's seats, repetitive horizontal actuator identifications, repetitive checks of the horizontal movement system (HMS), a detailed inspection of the HMS, as ap…