Commonwealth legislation

AD/A320/37 - Thrust Reverser Check Valve Replacement

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Commonwealth

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legislative instrument

Plain English Summary

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This directive requires operators of Airbus A319/A320/A321 aeroplanes that have not incorporated modification 22537 or Service Bulletin A320‑29‑1048 R1 to replace the thrust‑reverser hydraulic check valve in accordance with Airbus Service Bulletin A320‑29‑1048 R1. Compliance is mandated by the Civil Aviation Safety Authority no later than 31 December 1994 (Applicability; Requirement; Compliance).

The stated purpose is to prevent pressurisation of the Hydraulic Control Unit return line if the check valve fails closed (Background). Aircraft owners/operators pay for parts, labour and scheduling and must follow the manufacturer's procedure.

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AD/A320/37 - Thrust Reverser Check Valve Replacement

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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 Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/37 Thrust Reverser Check Valve Replacement 7/94

Applicability: All A320 aircraft not incorporating Airbus Industrie modification 22537 or SB A320- 29-1048 R1.

Requirement: Action in accordance with Airbus Industrie Service Bulletin A320-29-1048 R1.

Note: DGAC AD 94-059-054(B) dated 16 March 1994 refers.

Compliance: No later than 31 December 1994.

Background: Airbus Industrie advise that this action is required to prevent pressurisation of the Hydraulic Control Unit return line in the event of failure in the closed position of the check valve in the thrust reverser hydraulic return line.

Source text

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