# Airworthiness Directives; Boeing Model 777-200 Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2001-04-23 · Effective 2001-05-08 · 66 FR 20387
## Document
- **Document number:** 01-9662
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 777-200 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 66 FR 20387
- **Publication date:** 2001-04-23
- **Effective date:** 2001-05-08
- **FAA docket:** Docket No. 2001-NM-73-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 777-200 series airplanes. This action requires repetitive inspections of the upper housing assembly of the forward trunnion of the main landing gear (MLG) for discrepancies (migrated or missing wearplates, loose or fractured attachment screws); and corrective action, if necessary. This action also provides for an optional modification of the upper housing assembly for airplanes without discrepant wearplates, which would end the repetitive inspections. This action is necessary to prevent migration or loss of the upper housing wearplate, which could result in loss of the MLG during the takeoff roll; consequent damage to the airplane structure; and injury to flight crew, passengers, or ground personnel. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/04/23/01-9662/airworthiness-directives-boeing-model-777-200-series-airplanes)
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