Commonwealth legislation

AD/CESSNA 400/72 - Induction Elbow - Replacement

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This Act has been repealed and is no longer in force. It is retained for historical reference.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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What this is: This is an Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that legally requires aircraft owners to fix a specific mechanical problem.

What it requires: Owners of Cessna Model 414A aircraft must replace specific induction elbows (flexible engine air intake parts with part number 642232 that are coloured black, purple, or orange).

Why it matters: The rubber inner lining of these elbows can delaminate (peel away), break off, and block the engine's inlet manifold. This blockage can cause engine failure in flight.

When to comply: The replacement must be done within 300 hours of flight time after 31 July 1980.

How to comply: Aircraft mechanics must follow one of three technical guides:

Rolls Royce Service Bulletin T-411; or
T.C.M. Service Bulletin M80-10; or
Cessna Service Information Letter ME80-14

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AD/CESSNA 400/72 - Induction Elbow - Replacement

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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 Cessna 400 Series Aeroplanes

AD/CESSNA 400/72 Induction Elbow - Replacement 9/80

Applicability: Model 414A fitted with certain P/N 642232 flexible elbows as detailed in requirement documents.

Document: 1. Rolls Royce SB No. T-411; OR 2. T.C.M. SB M80-10; OR 3. Cessna SIL No.

ME80-14.

Compliance: Within 300 hours time in service after 31 July 1980.

Background: This Directive is issued to prevent blockage of inlet manifold by the delaminated inner layer of some P/N 642232 flexible elbows (coloured black, purple and orange). It has been amended to include Cessna SIL No. ME80-14 as an alternative requirement document.

Source text

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