Commonwealth legislation

AD/INST/32 - Altimeters

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

Requires specific United Instruments 5934-series altimeters (listed serial ranges manufactured 1 Feb 1985–28 Feb 1986 and not marked as modified) to be inspected/modified per United Instruments Service Bulletin No. 2 because a slight pull on the barometric scale knob may disconnect the millibar scale from the altitude pointers. Aircraft operators must have the corrective action completed before the next Maintenance Release after 31 May 1986; approved Australian workshops may perform the work, so operators bear the compliance cost.

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AD/INST/32 - Altimeters

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Instruments and Automatic Pilots

AD/INST/32 Altimeters 5/86

Applicability: United Instruments Inc altimeters 5934 series with the following serial numbers: 6C461 thru 6C999

7C000 thru 7C999

8C000 thru 8C999

9C000 thru 9C999

0D000 thru 0D999

1D000 thru 1D999

2D000 thru 2D869

manufactured between 1 February 1985 and 28 February 1986 and not identified as modified by a 6mm yellow dot on the lower half of the rear case and the letter "M" stamped on the data plate just before the word "altimeter".

Requirement: Action in accordance with United Instruments Inc SB No. 2.

Note: FAA AD 86-05-02 refers.

Compliance: Prior to issue of the next Maintenance Release after 31 May 1986.

Note: Corrective action MAY be carried out in Australia by an approved workshop and the altimeter appropriately identified.

Background: Several reports have been received stating that a slight outward pull on the barometric scale setting knob may disconnect the millibar scale from the altitude indication pointers.

Source text

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

1 AD/INST/32 - Altimeters