Commonwealth legislation

AD/CESSNA 400/7 - Turbocharger Air Inlet Duct - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

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This is a mandatory aircraft safety rule requiring visual inspections of the turbocharger air inlet duct on specific Cessna twin-engine planes.

Who it affects Owners and operators of Cessna 401 and 402 model aircraft with serial numbers below 401-0145 and 402-0145 (early production models).

What it requires You must visually inspect the fibreglass duct that feeds air into the turbocharger compressor. Look for cracks, breaks, or deterioration in the fibreglass material.

When to comply

First inspection: Within 25 hours of flying time after the directive takes effect
Ongoing inspections: Every 100 hours of flying time thereafter

Why it matters A cracked or breaking inlet duct can fail in flight, causing the turbocharger to lose pressure or ingest debris. This can lead to engine damage or power loss, posing a serious safety risk during flight.

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Direct links to the current provisions in AD/CESSNA 400/7 - Turbocharger Air Inlet Duct - Inspection.

AD/CESSNA 400/7 - Turbocharger Air Inlet Duct - Inspection

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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 400/7 Turbocharger Air Inlet Duct - Inspection 1/69

Applicability: All models 401 and 402 with S/Nos. below 401-0145 and 402-0145.

Requirement: Visually inspect the fibreglass inlet duct to the turbocharger compressor for signs of cracking and or breakup.

Compliance: Within 25 hours time in service after 14 February 1969 and there- after at intervals not exceeding 100 hours time in service.

Source text

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