1AD/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.