Commonwealth legislation

AD/CESSNA 170/33 Amdt 1 - Flap Actuator

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD requires Cessna 172RG owners/operators to either fit a new mechanical stop nut per Cessna SIL SE79‑57 or install a shorter‑travel replacement flap actuator (P/N C301002‑0110) to prevent flap overtravel and asymmetric flap conditions. It affects listed 172RG serials, imposes compliance within 100 flight hours, and creates direct costs for owners/operators while directing work to maintenance providers and parts suppliers.

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Current sections

Direct links to the current provisions in AD/CESSNA 170/33 Amdt 1 - Flap Actuator.

AD/CESSNA 170/33 Amdt 1 - Flap Actuator

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes

AD/CESSNA 170/33

Amdt 1

Flap Actuator 10/82

Applicability: Model 172RG with S/Nos. 172RG0001 to 172RG0005, 172RG0007 to 172RG0012, 172RG0014, 172RG0016 and 172RG0019.

Requirement: Modify the flap actuator assembly P/N C301002-0108 by installing a new mechanical stop nut in accordance with Cessna Service Information Letter SE79-57, or install a replacement flap actuator assembly, P/N C301002-0110.

Note: Although Cessna SIL SE79-59 does not include the model 172RG, the actuator modification for this model is the same as that provided for the model 152.

FAA AD 80-01-06, Amendment 39-3649 refers.

Compliance: If not already accomplished, within 100 hours time in service after 31 October 1982.

Background: This amendment includes the option to replace the actuator with a new type which provides shorter travel. Overtravel may lead to an asymmetric flap condition.

Source text

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

1 AD/CESSNA 170/33 Amdt 1 - Flap Actuator