Definition of a Serviceable DPV Assembly

For the purpose of this Directive, a serviceable DPV assembly is an assembly that has either accumulated zero time-since-new (TSN), or has accumulated zero time- in- service (TIS) after having passed the tests contained in the Middle River Aircraft Systems Component Maintenance Manual GEK 85007 (78-31-51), Directional Pilot Solenoid Valve, Page Block 101, Testing and Trouble Shooting, or equivalent approved maintenance date, or has been successfully leak tested in accordance with paragraph 2.B. of the Accomplishment Instructions of Middle River Aircraft Systems ASB 78A5053 dated 30 October 2001.

Note: FAA AD 2002-06-07 Amdt 39-12684 refers.

Compliance: For Requirement 1, 1(a)&(b) or 2: Prior to exceeding 7,000 flight hours’ time-since- new (TSN) or 1,000 flight hours’ time-in-service (TIS) after the effective date of this Directive.

For Requirement 3, excluding 3(a)&(b): Prior to exceeding 7,000 flight hours’ time- since-new (TSN) or 1,000 flight hours’ time- in-service (TIS) after the effective date of this Directive.

For Requirement 3(a): Prior to further flight after deactivation of the thrust reverser in accordance with Requirement 3.

For Requirement 3(b): Within 10 days after deactivation of the thrust reverser in accordance with Requirement 3.

For Requirement 4: At intervals of not exceeding 7,000 flight hours since the last check or replacement of the DPV assembly.

This Airworthiness Directive becomes effective on 7 August 2003.

Background: This AD is prompted by a review of thrust reverser safety analyses following a report of inadvertent thrust reverser deployment on another make and model engine. The actions specified in this AD are intended to prevent inadvertent in- flight thrust reverser deployment.

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Jim Coyne

Delegate of the Civil Aviation Safety Authority 26 June 2003

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The above AD is notified in the Commonwealth of Australia Gazette on 16 July 2003.