# Airworthiness Directives; Israel Aircraft Industries, Ltd., Model 1125 Westwind Astra and Astra SPX Series Airplanes
> **Rule** · Final rule. · Published 2000-05-26 · Effective 2000-06-30 · 65 FR 34054
## Document
- **Document number:** 00-12813
- **Category:** airworthiness
- **Manufacturer:** Israel
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 65 FR 34054
- **Publication date:** 2000-05-26
- **Effective date:** 2000-06-30
- **FAA docket:** Docket No. 99-NM-360-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Israel Aircraft Industries, Ltd., Model 1125 Westwind Astra and Astra SPX series airplanes, that requires replacement of the existing pneumatic de-icing boot pressure indicator switch with a newly designed switch. This amendment is prompted by an occurrence on a similar airplane model in which the pneumatic de-icing boot indication light may have provided the flightcrew with misleading information as to the proper functioning of the de-icing boots. The actions specified by this AD are intended to prevent ice accumulation on the airplane leading edges, which could result in reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/05/26/00-12813/airworthiness-directives-israel-aircraft-industries-ltd-model-1125-westwind-astra-and-astra-spx)
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