Commonwealth legislation

AD/P68/17 Amdt 1 - Flap Actuator Switch - Inspection and Replacement

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

3/10 complexity

This mandatory safety directive orders all Partenavia P68 owners/operators to inspect for and immediately remove the faulty flap actuator switch (NOR 7-345-4 / Honeywell 13AT3). The switch is electrically undersized (3 A vs the flap motor’s 6 A), has failed in service, and risks flap-system malfunction. Replace with NOR 7-345-1/M fitted with the specified rubber ring and a 4 mm knob gap, or with a Secretary-approved equivalent; Forrestair Drawing EDS 140 is pre‑approved. Complete work by 31 March 1980. Previous AD/P68/17 compliance is not sufficient.

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Current sections

Direct links to the current provisions in AD/P68/17 Amdt 1 - Flap Actuator Switch - Inspection and Replacement.

AD/P68/17 Amdt 1 - Flap Actuator Switch - Inspection and Replacement

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Partenavia P68 Series Aeroplanes

AD/P68/17

Amdt 1

Flap Actuator Switch - Inspection and Replacement 3/80

Applicability: All models.

Requirement: 1. Inspect the flap actuator switch to determine if switch P/N NOR 7-345-4 (Honeywell Product P/N 13AT3) is fitted to the aircraft.

2. Remove the above flap switch if fitted.

3. The original flap switch P/N NOR 7-345-1/M may be refitted provided that the rubber ring is installed and the knob adjusted for a 4mm gap between the edge of the mounting bushing and the base of the knob; or

an equivalent switch approved by the Secretary may be installed.

Note: A switch installation in accordance with Drawing No. EDS 140 supplied by Forrestair is an acceptable means of compliance.

Compliance: Before 31 March 1980.

Note: Compliance with the original AD/P68/17 does not constitute compliance with this AD/P68/17A.

Background: The new flap switch which Partenavia SB No. 46 called up (P/N NOR 7-345- 4/Honeywell P/N 13AT3) has proved to be electrically inadequate and at least two open circuit micro switches have been reported. The manufacturer’s rating of the switch is 3 amps inductive load at 30V DC and the flap motor draws up to 6 amps. If the original switch has the rubber ring fitted correctly it should be satisfactory for operational use and the switch is more than adequate electrically.

Source text

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

1 AD/P68/17 Amdt 1 - Flap Actuator Switch - Inspection and Replacement