Federal Register of Legislation - Australian Government

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AD/GC-1/2 Airworthiness Directives as made
This instrument mandates requirements equivalent to FAA AD 47-06-01. The United States of America Federal Aviation Administration (FAA) issued AD 47-06-01 affecting Swift Museum Foundation GC-1A and GC-1B series aeroplanes in 1947. The United States of America is the State of Design for this aircraft type. As there are some examples of the type on the Australian register, and as the FAA AD pre-dates automatic acceptance of foreign ADs under Part 39 of the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority has issued AD/GC-1/2 to mandate requirements equivalent to FAA AD 47-06-01.
Administered by: Infrastructure, Transport, Regional Development and Communications
Exempt from sunsetting by the Legislation (Exemptions and Other Matters) Regulation 2015 s12 item 15
Registered 02 Sep 2020
Tabling HistoryDate
Tabled HR03-Sep-2020

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001 (1) of CASR. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct an unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Swift Museum Foundation GC-1A and GC-1B Series Aeroplanes

AD/GC-1/2

Main Landing Gear Retraction
System - Inspection

18/2020

 

Applicability:

All Swift Museum Foundation GC-1A and GC-1B model aircraft.

Requirement:

1.    Inspect the main landing gear retraction system to determine that adjustments are as follows:

a.     When the side brace is against the down stop the middle joint is 1/8 inch to 1/4 inch above dead centre (3/16 inch to 5/16 inch when measured from edges of links in accordance with Globe Customer Service Maintenance Bulletin No. 7, as in force from time to time).

b.    When the side brace is against the down stop and the down lock plunger is fully extended, covering at least 1/2 of the adjustment screw head, the clearance between the plunger and the screw head is from 0.001 inch to 0.005 inch.

c.     When the side brace is against the down stop the limit switch plunger is  depressed approximately 1/32 inch beyond the cutoff point.

d.    The turnbuckle in the emergency extension cable is positioned so that on manual extension of the gear, both down locks operate before the handcrank has been wound to the full down position. After it has been determined that the turnbuckle position is satisfactory in this respect it should be determined that with the handcrank wound to the full up position the cable length is sufficient to permit the up limit switches to cut off.

Note 1:  United States of America Federal Aviation Administration (FAA) AD 47‑06‑01 is the source document for the requirements of this AD.

Note 2:  The words “as in force from time to time” require compliance with the most recent version of the referenced document.

Compliance:

1.    Unless previously accomplished, within 6 months after the commencement date of this AD and thereafter at intervals not to exceed 100 hours’ time in service.

 

This AD commences on 17 September 2020.

Background:

An audit of the Australian Aircraft Register found that Swift Museum Foundation GC-1B aircraft have been on the register for some time and that requirements equivalent to the applicable FAA ADs have not previously been mandated in Australia for these aircraft.

 

This AD is issued to mandate requirements equivalent to FAA AD 47-06-01.

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Description automatically generated

Pieter van Dijk
Delegate of the Civil Aviation Safety Authority

25 August 2020