Commonwealth legislation

AD/SD3-30/20 - Landing Gear Warning Horn

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Commonwealth

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legislative instrument

Plain English Summary

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This AD requires operators of specified Short SD3-30 serial numbers to relocate a Keystone landing‑gear warning horn (P/No. AC155F) to a different mounting per Shorts Service Bulletin SD330‑32‑114 because the horn can be inaudible when mounted on the top centre line between certain station positions.

Compliance is mandatory under CASA Part 39; affected owners/operators must perform and fund the relocation (or do so within the stated TIS window if already fitted).

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AD/SD3-30/20 - Landing Gear Warning Horn

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Short SD3-30 Series Aeroplanes

AD/SD3-30/20 Landing Gear Warning Horn 12/86

Applicability: All models SD3-30 with S/Nos. SH3002 through SH3107 and SH3109 through SH3120.

Requirement: 1. Upon replacement of Lucas Horn P/No. V.0603L with Keystone Horn P/No.

AC155F, relocate mounting of horn according to the requirements of Shorts SD3- 30 Service Bulletin SD330-32-114.

For aeroplanes previously fitted with Keystone Horn P/No. AC155F, relocate mounting of horn according to the requirements of the document referenced in Para 1 above.

Compliance: For Para 1: Upon replacement.

For Para 2: Within 30 hours time in service after 31 January 1987.

Background: Reports have been received that the Keystone P/No. AC155F landing gear warning horn is inaudible when located between station 3 and 13.45 on the aircraft top centre line.

Source text

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

1 AD/SD3-30/20 - Landing Gear Warning Horn