Commonwealth legislation

AD/PA-28/39 - Stabilator - Inspection and Drilling of Drain Holes

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

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This Airworthiness Directive (AD) mandates a safety inspection and modification for specific Piper Cherokee aircraft (models PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28R-180, PA-28R-200, and PA-28-235).

What it requires:

Inspection of the stabilator (the movable horizontal tail surface that controls the aircraft's up/down pitch)
Drilling drain holes in the stabilator structure to allow trapped water to escape
Completion within 100 hours of flight time after 29 September 1972

Who must comply: Owners and operators of the listed Piper PA-28 models.

Why it matters: Water trapped inside aircraft control surfaces can cause corrosion or freeze in flight, potentially jamming the stabilator and causing loss of control. Draining prevents this safety hazard.

The technical details for the drilling procedure are found in Piper Service Letter No. 615.

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AD/PA-28/39 - Stabilator - Inspection and Drilling of Drain Holes

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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-28 Series Aeroplanes

AD/PA-28/39 Stabilator - Inspection and Drilling of Drain Holes 9/72

Applicability: Models PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28R-180, PA-28R-200 and PA-28-235.

Document: Piper SL No. 615.

Compliance: Within 100 hours time in service after 29 September 1972.

Source text

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