Commonwealth legislation

AD/PA-44/10 Amdt 1 - Engine Mount Frame Cracking

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

What this is: This is an Airworthiness Directive (AD) — a mandatory safety rule issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1988.

What it requires: Owners and operators of Piper PA-44 Seminole aircraft must inspect the engine mount frames for cracks by following the exact procedures in Piper Service Bulletin No. 719.

Who it affects: All models of the Piper PA-44 series. Originally, this only applied to specific aircraft serial numbers listed in the Service Bulletin, but Amendment 1 expands this to every PA-44 aircraft.

Why it matters: Cracks where the engine mount ring meets the lower diagonal tubes can cause the engine to separate from the aircraft in flight — a catastrophic failure. This directive makes the inspection legally compulsory. If you don't comply, the aircraft is not airworthy and cannot legally fly.

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AD/PA-44/10 Amdt 1 - Engine Mount Frame Cracking

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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 Piper PA-44 (Seminole) Series Aeroplanes

AD/PA-44/10

Amdt 1

Applicability: All models.

Engine Mount Frame Cracking 3/86

Document: Action in accordance with Piper SB No 719. Compliance: As per requirement document.

Background: The manufacturer has received reports of cracks at the intersection of the engine mount ring and the lower diagonal tubes. The Department has received MDRs of similar cracking on aircraft serial numbers outside the effectivity of the Service Bulletin. Amendment 1 extends this inspection to all models.

Source text

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