# Proposed AD 99-NM-46-AD: Boeing Model 747 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-24-16
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 16, 1999, 64 FR 38383
- Comments due: August 30, 1999
- Became: [AD 99-24-16](https://openairdocs.org/ad/99-24-16)
- Docket: 99-NM-46-AD
- FR document: 99-18200
- Official PDF: https://openairdocs.org/files/sha256/5b/66/5b66b6340ae21ecc1570c095af057b5b8f5793399db287f4edec5a8e2086769b (from https://www.govinfo.gov/content/pkg/FR-1999-07-16/pdf/99-18200.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/07/16/99-18200/airworthiness-directives-boeing-model-747-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-46-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 747 series airplanes. This proposal would require removal of cable guards in the lateral control system and replacement with new, improved cable guards. This proposal is prompted by reports of high control wheel forces and restricted control wheel movement. The actions specified by the proposed AD are intended to prevent deterioration of cable guards in the lateral control system, which could result in a jam of the lateral control system and consequent reduced lateral controllability of the airplane.

## Notices in this docket

- Jul 16, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-18200, comments due Aug 30, 1999 (https://www.federalregister.gov/documents/1999/07/16/99-18200/airworthiness-directives-boeing-model-747-series-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.