Commonwealth legislation

AD/PA-34/1 - Compass Installation - Inspection for Accuracy

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 it is: This is a safety rule (called an Airworthiness Directive) that applies to a specific type of aircraft—the Piper PA-34-200 (Seneca).

What it requires: Before the aircraft can be certified as airworthy, the owner or operator must check the primary magnetic compass (the instrument that shows direction) for accuracy. Specifically, they must test it while running the electrical systems needed for instrument flying (IFR) purely on battery power, with both alternators (the generators that charge the battery) turned off or broken.

The standard: The compass reading must not be off by more than 10 degrees during this test.

Why it matters: This ensures that if the aircraft suffers a complete electrical failure during flight, the pilot can still rely on the compass for navigation and won't get lost due to magnetic interference from the battery-powered systems.

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AD/PA-34/1 - Compass Installation - Inspection for Accuracy

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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-34 (Seneca) Series Aeroplanes

AD/PA-34/1 Compass Installation - Inspection for Accuracy 5/72

Applicability: Model PA34-200.

Requirement: Inspect the primary magnetic compass to ensure that its deviation does not exceed 10 degrees when electrical loads required for IFR flight are operated on battery power with both alternators inoperative.

Compliance: Before issue of a Certificate of Airworthiness.

Source text

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