Superseded. This AD was superseded by AD 2026-20-10. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2019-20-07
Effective 10/11/2019 · Published 10/11/2019
Airworthiness Directives; The Boeing Company Airplanes
Summary
The FAA is adopting an airworthiness directive (AD) for all The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. This AD requires repetitive operational checks of the leading edge (LE) outboard (OB) slats and applicable on-condition actions. This AD also requires revising the airplane flight manual (AFM) to prohibit flap retraction under icing conditions and revising the existing maintenance or inspection pr…