Commonwealth legislation

AD/GENERAL/51 - Electrical External Power Connection - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

2/10 complexity

This Airworthiness Directive requires a one-time inspection of external ground‑power sockets on aircraft with MTOW ≤5,700 kg to confirm they cannot accept reversed polarity or incorrect phase sequencing. Owners/operators must either retrofit polarity/phase protection or permanently disable the external power provision if it fails.

It addresses risks of equipment damage, fire, or injury from incorrect ground connections and carried a compliance deadline of 100 flight hours after 28 November 1975.

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AD/GENERAL/51 - Electrical External Power Connection - 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 Aircraft - General

AD/GENERAL/51 Electrical External Power Connection - Inspection

11/75

Applicability: All aircraft with a maximum take-off weight of 5700 kg and below fitted with electrical external power provision.

Requirement: 1. Inspect the external power system to ensure that an external power supply with reversed polarity or phase sequence cannot be connected to the electrical system of the aircraft.

Modify or disconnect any external power system which does not comply with para. 1.

Compliance: Within 100 hours time in service after 28 November 1975.

Source text

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