# Proposed AD 99-NM-373-AD: Boeing Model 777-200 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-23-20
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 31, 2000, 65 FR 46666
- Comments due: September 14, 2000
- Became: [AD 2000-23-20](https://openairdocs.org/ad/2000-23-20)
- Docket: 99-NM-373-AD
- FR document: 00-19266
- Official PDF: https://openairdocs.org/files/sha256/0e/2d/0e2ded9a6cd5764cd94e3f6530534a714aa7bc2492a0b4ee29ad2085537bcf94 (from https://www.govinfo.gov/content/pkg/FR-2000-07-31/pdf/00-19266.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/07/31/00-19266/airworthiness-directives-boeing-model-777-200-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-373-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 777-200 series airplanes. This proposal would require replacement of certain components. This action is necessary to prevent corrosion of the axle of the main landing gear, which could result in cracking and failure of the axle, loss of the wheels on that axle, and reduced controllability of the airplane on the ground. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jul 31, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-19266, comments due Sep 14, 2000 (https://www.federalregister.gov/documents/2000/07/31/00-19266/airworthiness-directives-boeing-model-777-200-series-airplanes)

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