Commonwealth legislation

AD/CESSNA 188/22 - Wing Front and Rear Spar

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legislative instrument

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This airworthiness directive requires owners/operators of Cessna 188 (Agwagon) aeroplanes (serial numbers 188-0001 to 188-00832, built before 1972) to inspect specified front- and rear-spar locations for cracks using at least 4× magnification or an equivalent device, following Cessna Service Bulletin SE 74-4. Inspection intervals vary by modification status: unmodified aircraft every 100 hours, aircraft modified per Rex Drawing RA491 Issue 4 every 150 hours, and aircraft with doubler P/N 1620058.1 or the service kit every 500 hours (after 31 May 1974).

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AD/CESSNA 188/22 - Wing Front and Rear Spar

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Cessna 188 (Agwagon) Series Aeroplanes

AD/CESSNA 188/22 Wing Front and Rear Spar 5/74

Applicability: All models prior to 1972 Agwagon model S/Nos. 188-0001 to 188-00832. Requirement: 1. Inspect for cracks in:

(a) the front spar at the splice area near the strut pick-up;

(b) the front spar at the fuselage attachment area;

(c) the rear spar at the fuselage attachment area;

in accordance with Cessna Service Bulletin No. SE 74-4.

Inspect for cracks in the upper flange of the rear spar channel at the outer end of the attachment fitting.

The inspections shall be carried out using a magnifying glass of at least 4X magnification or alternatively a device such as a “Syte Ade” may be employed.

Compliance: 1. For unmodified aircraft - at intervals not exceeding 100 hours time in service.

2. For aircraft modified to Rex Drawing No. RA491, Issue 4 \- At intervals not exceeding 150 hours time in service.

3. For aircraft with doubler P/N 1620058.1 installed or service kit called out in SL No. SE 74-4 \- at intervals not exceeding 500 hours time in service, after 31 May 1974.

Source text

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

1 AD/CESSNA 188/22 - Wing Front and Rear Spar