# Proposed AD 99-NM-177-AD: British Aerospace BAe Model ATP Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-01-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 8, 1999, 64 FR 60748
- Comments due: December 8, 1999
- Became: [AD 2000-01-08](https://openairdocs.org/ad/2000-01-08)
- Docket: 99-NM-177-AD
- FR document: 99-29179
- Official PDF: https://openairdocs.org/files/sha256/24/62/24625802a5e4df61ce8f0b474ee0738ec266e82e4c318e2bab1835f5eab1bb47 (from https://www.govinfo.gov/content/pkg/FR-1999-11-08/pdf/99-29179.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/11/08/99-29179/airworthiness-directives-british-aerospace-bae-model-atp-airplanes
- Page: https://openairdocs.org/proposed/99-NM-177-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all British Aerospace BAe Model ATP airplanes. This proposal would require a one-time inspection of the orientation of certain bolts of the rudder standby control system (SCS), and reinstallation of the bolts, if necessary. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent uncommanded engagement of the rudder SCS, which could result in reduced controllability of the airplane.

## Notices in this docket

- Nov 8, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-29179, comments due Dec 8, 1999 (https://www.federalregister.gov/documents/1999/11/08/99-29179/airworthiness-directives-british-aerospace-bae-model-atp-airplanes)

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