# Airworthiness Directives; Raytheon Model BAe.125 Series 1000A and 1000B, and Model Hawker 1000 Series Airplanes
> **Rule** · Final rule. · Published 1999-11-30 · Effective 2000-01-04 · 64 FR 66764
## Document
- **Document number:** 99-30947
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 66764
- **Publication date:** 1999-11-30
- **Effective date:** 2000-01-04
- **FAA docket:** Docket No. 99-NM-176-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to all Raytheon Model BAe.125 series 1000A and 1000B, and Model Hawker 1000 series airplanes, that requires inspection of P1 pitot pipes for chafing or damage, and various follow-on actions. This amendment is prompted by reports of P1 pitot pipes chafing against adjacent flight control cables. The actions specified by this AD are intended to prevent a hole in the P1 pitot pipes, which would lead to erroneous input to the instrumentation and warning systems associated with the pilot's instruments.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/11/30/99-30947/airworthiness-directives-raytheon-model-bae125-series-1000a-and-1000b-and-model-hawker-1000-series)
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