Commonwealth legislation

AD/HS 125/70 - EFIS Power Supply

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This directive mandates that owners/operators of the specifically listed BAe‑125 series aeroplanes install the EFIS power‑supply modification exactly per British Aerospace Service Bulletin 24‑248‑(3024), to address a reported heat‑sink diode overheat. Work must be done and paid for by the owners before 31 October 1985; technical execution follows the manufacturer’s bulletin and alternatives require separate approval.

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AD/HS 125/70 - EFIS Power Supply

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source British Aerospace BAe 125 Series Aeroplanes

AD/HS 125/70 EFIS Power Supply 8/85

Applicability: All BAe-125 series aeroplanes with the following S/Nos: Series 700B - 257208 to 257210, 257214 and 257215

Series 800A and B - 258001 to 258020, 258022 to 258024 and 258026.

Requirement: Modify the EFIS power supply according to the requirements detailed in British Aerospace 125 S.B. 24-248-(3024).

Note: United Kingdom CAA AD No. 004-04-85 Refers.

Compliance: Prior to 31 October 1985.

Background: The aircraft manufacturer advises of an overheat of the heat sink diode assembly on a completed aircraft.

Source text

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