Commonwealth legislation

AD/JETSTREAM/32 - Emergency Selector Valve

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This airworthiness directive requires all British Aerospace Jetstream 3100 aircraft to have the emergency selector valve’s internal nylon detent ball replaced with a stainless‑steel ball, carried out per the manufacturer’s service bulletin within 300 hours TIS after 15 June 1989. It affects operators and maintenance organisations, who must arrange and pay for the work; the measure follows an incident where the nylon ball distorted and the valve jammed.

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Current sections

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AD/JETSTREAM/32 - Emergency Selector Valve

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source British Aerospace BAe 3100 (Jetstream) Series Aeroplanes

AD/JETSTREAM/32 Emergency Selector Valve 6/89

Applicability: All model Jetstream series 3100 aircraft.

Requirement: Action in accordance with Jetstream Alert Service Bulletin No. 29-A-JA881143.

Note: UK CAA AD 010-03-89 refers.

Compliance: Within 300 hours TIS after 15 June 1989.

Background: Investigation of a flight incident in which the flaps and MLG emergency selector valve jammed, revealed that the valve internal nylon detent ball had distorted.

Replacement of the nylon ball with one of stainless steel will ensure valve servicability.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.