# Proposed AD 98-NM-316-AD: Boeing Model 767 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-11-06
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 15, 1999, 64 FR 61798
- Comments due: December 30, 1999
- Became: [AD 2000-11-06](https://openairdocs.org/ad/2000-11-06)
- Docket: 98-NM-316-AD
- FR document: 99-29742
- Official PDF: https://openairdocs.org/files/sha256/18/65/1865ec52792745f6a3d81d797622e34d0fb141465d4a99c70e1e563913b91211 (from https://www.govinfo.gov/content/pkg/FR-1999-11-15/pdf/99-29742.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/11/15/99-29742/airworthiness-directives-boeing-model-767-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-316-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all Boeing Model 767 series airplanes. This proposal would require repetitive inspections to detect discrepancies of the wiring and surrounding Teflon sleeves of the fuel tank boost pumps and override/jettison pumps; replacement of the sleeves with new sleeves, for certain airplanes; and repair or replacement of the wiring and sleeves with new parts, as necessary. This proposal is prompted by reports of chafing of Teflon sleeves that surround and protect electrical wires inside conduits installed in the fuel tanks. The actions specified by the proposed AD are intended to ensure adequate protection to the fuel pump wire insulation. Such chafing of the wire insulation could eventually result in exposure of electrical conductor, permit arcing from the wire to the conduit, and create a potential for a fuel tank fire or explosion.

## Notices in this docket

- Nov 15, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-29742, comments due Dec 30, 1999 (https://www.federalregister.gov/documents/1999/11/15/99-29742/airworthiness-directives-boeing-model-767-series-airplanes)

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