Commonwealth legislation

AD/AMD 50/18 - Frame 25 Water Drainage

In ForceCTH

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

This AD requires owners/operators of specified Dassault Falcon 900 and F900EX airframes to install a manufacturer-prescribed modification to the Frame 25 drainage/filter (per Dassault service bulletin) to fix water pooling that could freeze and jam flight controls. Issued by CASA and effective 30 Dec 1999, the mandatory modification must be completed by 30 June 2000, creating a one‑time maintenance obligation and scheduling/cost burden for affected aircraft.

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AD/AMD 50/18 - Frame 25 Water Drainage

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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 AMD Falcon 50 and 900 Series Aeroplanes

AD/AMD 50/18 Frame 25 Water Drainage 13/99

Applicability: MF 900 S/n 1 to 177 and F900 EX S/n 1 to 41.

Requirement: Modify in accordance with Dassault Aviation SB MF900-232 or F900EX-093 as appropriate.

Note: DGAC AD 1999-446-028(B) refers.

Compliance: Before 30 June 2000.

This Airworthiness Directive becomes effective on 30 December 1999.

Background: Manufacturer flight testing revealed that water does not drain properly through the Frame 25 filter and if it froze could lead to jamming of the flight controls.

Source text

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