# Proposed AD 94-NM-161-D: British Aerospace BAC 1-11-200 and -400 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Comment period closed
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 26, 1995, 60 FR 20461
- Comments due: May 5, 1995
- Docket: 94-NM-161-D
- FR document: 95-10202
- Official PDF: https://openairdocs.org/files/sha256/9f/c8/9fc80f9b345539b1b654eaa422e625da138e2fcded543bcb10e928b4dc61c760 (from https://www.govinfo.gov/content/pkg/FR-1995-04-26/pdf/95-10202.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/04/26/95-10202/airworthiness-directives-british-aerospace-bac-1-11-200-and--400-series-airplanes
- Page: https://openairdocs.org/proposed/94-NM-161-D

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all British Aerospace BAC 1-11-200 and -400 series airplanes. This proposal would require repetitive radiographic inspections to detect corrosion of the center torque shaft of the wing spoiler, and replacement, if necessary. This proposal is prompted by a report of the wing spoiler failing to retract fully after deployment, which caused the wing to drop significantly. Subsequent investigation revealed that the torque shaft assembly of the wing spoiler had failed, due to severe corrosion. The actions specified by the proposed AD are intended to prevent such failures, which can result in an adverse effect on controllability of the airplane.

## Notices in this docket

- Apr 26, 1995: Notice of proposed rulemaking (NPRM). (first notice), FR document 95-10202, comments due May 5, 1995 (https://www.federalregister.gov/documents/1995/04/26/95-10202/airworthiness-directives-british-aerospace-bac-1-11-200-and--400-series-airplanes)

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