# Proposed AD 99-NM-156-AD: Raytheon Model Hawker 1000 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-23-10
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 20, 1999, 64 FR 45485
- Comments due: October 4, 1999
- Became: [AD 99-23-10](https://openairdocs.org/ad/99-23-10)
- Docket: 99-NM-156-AD
- FR document: 99-21684
- Official PDF: https://openairdocs.org/files/sha256/9c/6d/9c6ddf9daf3c11fa0b214587fb333c15d96656927b72117e4e7f1ee5c3732461 (from https://www.govinfo.gov/content/pkg/FR-1999-08-20/pdf/99-21684.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/08/20/99-21684/airworthiness-directives-raytheon-model-hawker-1000-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-156-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Raytheon Model Hawker 1000 series airplanes. This proposal would require a visual inspection of the PS wire bundle, shielded wires going to fuel probe ``G,'' and any other wire or wire bundle for chafing in the forward wing spar and forward ventral tank area; and corrective actions, if necessary. This proposal is prompted by reports indicating that, due to improper routing of a wire bundle, the wire bundle chafed against the forward ventral tank transfer/crossfeed valve, which caused an electrical short and resulted in failure of the landing light. The actions specified by the proposed AD are intended to prevent a short circuit due to wire chafing, which can cause a fire in the ventral fuel tank area.

## Notices in this docket

- Aug 20, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-21684, comments due Oct 4, 1999 (https://www.federalregister.gov/documents/1999/08/20/99-21684/airworthiness-directives-raytheon-model-hawker-1000-series-airplanes)

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