# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2023-11-13 · Effective 2023-12-18 · 88 FR 77495
## Document
- **Document number:** 2023-25046
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 88 FR 77495
- **Publication date:** 2023-11-13
- **Effective date:** 2023-12-18
- **FAA docket:** Docket No. FAA-2023-0436
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777-200, 777-200LR, 777-300, 777-300ER, and 777F series airplanes. This AD was prompted by a report of a "FLAPS DRIVE" caution message in flight due to the torque trip indicator of the No. 2 trailing edge (TE) flap transmission assembly being in the set position, which resulted in an air turn-back. This AD requires an inspection or records review to determine the serial numbers of the TE flap transmission and gearbox assemblies, and applicable on-condition corrective actions. This AD also limits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/11/13/2023-25046/airworthiness-directives-the-boeing-company-airplanes)
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