Commonwealth legislation

AD/G21/1 - Below Floor Control System Components - Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Requires removal, disassembly and non‑destructive inspection of below‑floor control components — elevator, rudder and rudder‑pedal torque tubes, and hinge support (specified part numbers) — for corrosion or cracks using visual, dye‑penetrant or magnetic‑particle methods.

Affects operators and maintenance organisations of Grumman G21 (Goose) aircraft; inspections must be done before issue of the Certificate of Airworthiness and thereafter every 2,000 flight hours or two years (whichever occurs first). Operators pay for inspections and any rectification; the regulator enforces timing and compliance.

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AD/G21/1 - Below Floor Control System Components - 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 Grumman G21 (Goose) Series Aeroplanes

AD/G21/1 Below Floor Control System Components - Inspection

10/77

Applicability: All models.

Requirement: 1. Remove and disassemble:

(i) Elevator Torque Tube Assembly P/N 12755,

(ii) Rudder Torque Tube Assembly P/N 12756,

(iii) Rudder Pedal Torque Tube Assembly LH and RH P/N 12757 and 12758,

(iv) Hinge Support Assembly P/N 12725.

Inspect all parts for corrosion and/or cracks using visual and dye penetrant or magnetic particle techniques.

Note: FAA AD 73-12-6 Amendment 39-1657 refers.

Compliance: Initially before issue of Certificate of Airworthiness and there- after at intervals not exceeding 2000 hours time in service or two years whichever occurs first.

Source text

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