Commonwealth legislation

AD/CESSNA 320/25 - Wing Tip Strobe Light - Inspection

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Commonwealth

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legislative instrument

Plain English Summary

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Requires owners/operators of Cessna 320-series aeroplanes with wing-tip strobe lights (except certain listed part numbers) to deactivate those strobe systems within 100 flight hours after 30 July 1976 by fitting a guard, locking the circuit breaker, or using another suitable means. Some Grimes strobe units may be reactivated after fitting specified cover plates per Cessna service literature; all other reactivations require the Secretary’s approved evidence that the lights are explosion‑proof.

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AD/CESSNA 320/25 - Wing Tip Strobe Light - Inspection

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Cessna 320 Series Aeroplanes

AD/CESSNA 320/25 Wing Tip Strobe Light - Inspection 7/76

Applicability: All models equipped with strobe lights installed in wing tip fuel tank nose cap except those aeroplanes having Symbolic displays P/N 30-0005, 30-0199-3 and 701133-1; Whelen Engineering Co. Inc. P/N A430; and Grimes Manufacturing Co. P/N 30- 0515-5, 30-1172-1, 30-0531-1 and 30-0467-5 strobe lights.

Requirement: 1. Deactivate the strobe light system by installing a guard over the switch and/or by pulling and locking the circuit breaker so that it cannot be inadvertently reset, or by any other suitable means.

2. Systems having Grimes P/N 30-0515-1 strobe lights may be reactivated upon the installation of Grimes P/N 31-1723-5 or 30-1171-1 cover plates in accordance with Cessna SL ME75-16. These cover plates may be identified by the presence of two quench tubes protruding into the light assembly from the end plate.

3. Do not reactivate other non excepted strobe light assemblies until data, showing that the strobe lights are explosion proof has been submitted to and approved by the Secretary.

Compliance: Within 100 hours time in service after 30 July 1976.

Source text

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

1 AD/CESSNA 320/25 - Wing Tip Strobe Light - Inspection

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Cessna 320 Series Aeroplanes

AD/CESSNA 320/25 Wing Tip Strobe Light - Inspection 7/76

2. Systems having Grimes P/N 30-0515-1 strobe lights may be reactivated upon the installation of Grimes P/N 31-1723-5 or 30-1171-1 cover plates in accordance with Cessna SL ME75-16. These cover plates may be identified by the presence of two quench tubes protruding into the light assembly from the end plate.

3. Do not reactivate other non excepted strobe light assemblies until data, showing that the strobe lights are explosion proof has been submitted to and approved by the Secretary.

Compliance: Within 100 hours time in service after 30 July 1976.