Commonwealth legislation

AD/PA-23/24 - Stabilator Tab Horn - Inspection

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This directive mandates daily safety inspections for a specific mechanical part on vintage Piper Apache/Aztec aircraft.

Who it affects: Owners of Piper PA-23-250 aeroplanes with serial numbers 27-1 through 27-432—provided the aircraft hasn't already been modified according to Service Bulletin 199A (a manufacturer-issued repair instruction).

What you must do: Inspect the stabilator tab horn (the hinge-point connecting the aircraft's horizontal tail surface to its control system) at every daily inspection, starting from 30 March 1961 and continuing until the aircraft is permanently modified per SB 199A.

The unusual bit: Unlike most maintenance tasks that require a licensed aircraft mechanic, the pilot can legally perform and certify this inspection themselves—a rare delegation of maintenance authority to the person actually flying the aircraft.

Why it exists: This addresses a potential structural or mechanical defect in the tail assembly that could compromise the pilot's ability to control the aircraft's pitch if left unchecked.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/PA-23/24 - Stabilator Tab Horn - Inspection.

AD/PA-23/24 - Stabilator Tab Horn - Inspection

meta-content-style-type: text/css meta-content-type: application/xhtml+xml; charset=utf-8 meta-generator: Aspose.Words for .NET 22.10.0

?xml version="1.0" encoding="utf-8" standalone="no"?>

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-23 (Apache and Aztec) Series Aeroplanes

AD/PA-23/24 Stabilator Tab Horn - Inspection 11/71

Applicability: Model PA-23-250 with S/Nos. 27-1 to 27-432 not modified in accordance with SB 199A.

Document: Piper SB No. 199.

Compliance: At each daily inspection after 30 March 1961 until modified in accordance with SB 199A.

Note: This inspection may be performed and certified by the pilot.

Source text

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