# Federal Register #2026-20680

FAA airworthiness directive requiring safety checks and actuator modifications on certain Boeing 787 airplanes

**Buyer:** Federal Aviation Administration (FAA)
**Posted:** October 08, 2026
**Identifier:** 2026-20680
**NAICS:** 336411, 336413

The Federal Aviation Administration issued a safety directive covering specified Boeing 787 airplanes and requiring inspections and modifications.
- **Government buyer:** U.S. Department of Transportation, Federal Aviation Administration (FAA); no specific office is identified.
- **OEM:** **Boeing**, the aircraft manufacturer and source of the referenced requirements bulletins.
- **Affected aircraft:** Boeing 787-8, 787-9, and 787-10 airplanes identified in Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB.
- **Required actions:** Perform retained repetitive slat operational checks and applicable on-condition actions; revise the airplane flight manual to prohibit flap retraction under icing conditions after landing; and revise the maintenance or inspection program.
  - Replace the leading-edge outboard geared rotary actuator with a lockout actuator at the outboard locations of slats 2 and 11.
  - Incorporate CMR 27-CMR-14 and functionally check the Leading Edge Power Drive Unit Half System Torque Brake.
  - Completion of the new actions terminates specified retained requirements for each airplane.
- **Safety concern:** A slat could be out of position without a flight-deck alert, potentially reducing lift and affecting safe flight and landing.
- **Estimated scope:** 174 U.S.-registered airplanes; quantities for individual aircraft models and replacement actuators are not specified.
- This is a regulatory airworthiness directive, not a solicitation for a contract award.

### Description

The FAA is issuing a final rule superseding Airworthiness Directive 2019-20-07 for certain Boeing 787-8, 787-9, and 787-10 airplanes. It retains the previous directive’s operational checks, flight-manual revision, and maintenance or inspection program requirements, and adds replacement of leading-edge outboard geared rotary actuators with lockout actuators. The rule also requires a new certification maintenance requirement, which terminates specified retained requirements, and removes airplanes from applicability. The FAA states the action addresses a potential out-of-position leading-edge slat system condition that could result in insufficient lift and inability to maintain safe flight and landing.

[View original listing](https://www.federalregister.gov/documents/2026/10/08/2026-20680/airworthiness-directives-the-boeing-company-airplanes)