Commonwealth legislation

AD/CESSNA 400/34 - Auxiliary Fuel Cells - Inspection and Replacement

In ForceCTH

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This airworthiness directive requires owners/operators of specified Cessna 411 and 421 aeroplanes fitted with certain Uniroyal or Goodyear auxiliary fuel cells to inspect for external wing fuel leaks before flight and to replace identified defective cells with Goodyear BTC-54A cells. It also mandates replacing Uniroyal US-932 cells within 300 flight hours or 6 months. Aircraft owners/operators pay for inspections and replacements; a pilot endorsed for the type may perform and certify the preflight inspections.

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AD/CESSNA 400/34 - Auxiliary Fuel Cells - Inspection and Replacement

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Cessna 400 Series Aeroplanes

AD/CESSNA 400/34 Auxiliary Fuel Cells - Inspection

and Replacement

6/72

Applicability: All Model 411 with S/Nos. 411-0001 to 411-0300 and Model 421 with S/Nos. 421- 0001 to 421B-0048 fitted with Uniroyal Type US-932 or Goodyear Type BTC-39 Auxiliary Fuel Cells or any subsequent numbered aeroplanes which have been fitted with the above fuel cells as a replacement.

Requirement: 1. Uniroyal Auxiliary Fuel Cell Type US-932 1.1 Before each flight inspect the external lower surface of the wings for evidence of fuel leakage. Pay particular attention to rivet heads, inspection covers and skin lap joints. Defective fuel cells shall be replaced with Goodyear Type BTC-54A fuel cells before further flight.

1.2 Within 300 hours time in service or 6 months after 28 June 1972 whichever occurs first, the Uniroyal Type US-932 fuel cells shall be replaced by Goodyear Type BTC-54A fuel cells. 2. Goodyear Auxiliary Fuel Cell Type BTC-39 2.1 Before each flight inspect the external lower surface of the wings for evidence of fuel leakage. Pay particular attention to rivet heads, inspection covers and skin lap joints. Defective fuel cells shall be replaced with Goodyear Type BTC-54A fuel cells before further flight.

Note 1: A pilot endorsed for the type may perform and certify for this inspection as detailed in paras. 1.1 and 2.1.

Note 2: The repetitive inspections required by paras. 1.1 and 2.1 may be substituted by the normal daily inspection when Goodyear BTC-54A cells are installed.

Compliance: As detailed in requirement document.

Source text

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

1 AD/CESSNA 400/34 - Auxiliary Fuel Cells - Inspection and Replacement