1AD/INST/39 - Altimeters Manufactured By CATIC

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/39 Altimeters Manufactured By CATIC 5/96

Applicability: All Altimeters manufactured by China National Aero Technology Import and Export Corporation (CATIC).

Note 1: These altimeters generally have no manufacturer identification or markings on the instrument case or the instrument face.

Note 2: These altimeters are known to be installed on but not limited to the Skyfox Aviation (Hedaro) CA21, CA22A, CA22A/25, CA25 and CA25N aircraft series.

Requirement: Calibrate the altimeter in accordance with CAO 108.56.

Major Defect Reports are to be raised on any failed instrument in accordance with CAR 51B.

Compliance: With effect from 25 April 1996:

Altimeters not installed in aircraft \- prior to initial installation and thereafter at intervals not to exceed 12 calendar months after installation.

2. installed in aircraft and not having complied with AD/INST/8 in the previous 12 calendar months \- prior to 1 August 1996 and thereafter at intervals not to exceed 12 calendar months.

3. Altimeters installed in aircraft and having complied with AD/INST/8 in the previous 12 calendar months \- within 12 months of complying with AD/INST/8 and thereafter at intervals not to exceed 12 calendar months.

Background: Reports have been received of altimeters, with no identifying markings, giving erroneous altitude indications.