Commonwealth legislation

AD/BEECH 400/25 - Roll Trim Printed Circuit Board Assembly

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires operators of specified Beechcraft 400A and 400T aeroplanes to inspect the A194 roll-trim printed circuit board (PCB) to confirm its part number and, if necessary, replace certain PCBs with improved parts. The directive applies to aircraft within the listed serial-number ranges.

CASA's delegate sets the inspection and replacement timing and procedures; operators pay for inspections and any replacements and must follow the AD's requirement and compliance instructions. The stated aim is to prevent relay sticking that could produce an out-of-trim condition and reduced controllability.

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Current sections

Direct links to the current provisions in AD/BEECH 400/25 - Roll Trim Printed Circuit Board Assembly.

AIRWORTHINESS DIRECTIVE

View image in the official source

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

View image in the official source

Beechcraft 400 Series Aeroplanes

AD/BEECH 400/25 Roll Trim Printed Circui

AD/BEECH 400/25 Roll Trim Printed Circuit Board Assembly

5/2004

Model

400A

400T

Serial Number Range

RK-45 and RK-49 through RK-322 inclusive

TT-1 through TT-180 inclusive and TX-1 through TX-12 inclusive

Beechcraft 400 Series Aeroplanes

AD/BEECH 400/25 (continued)

Background: This Directive requires an inspection to determine the part number of the A194 roll trim PCB and, if necessary, replacement of certain PCBs with improved parts. This action is necessary to prevent intermittent sticking of the relays on the PCB in either the open or closed position, which could result in an out-of-trim condition that may require the use of considerable control wheel force to keep the wings level and consequent reduced controllability of the aeroplane.

Signature: James Coyne

James Coyne

Delegate of the Civil Aviation Safety Authority 1 April 2004

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 21 April 2004.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Beechcraft 400 Series Aeroplanes

AD/BEECH 400/25 Roll Trim Printed Circui AD/BEECH 400/25 Roll Trim Printed Circuit Board Assembly

AD/BEECH 400/25 Roll Trim Printed Circuit Board Assembly

5/2004

Model Model

Model

400A

400T

Serial Number Range Serial Number Range

Serial Number Range

RK-45 and RK-49 through RK-322 inclusive

TT-1 through TT-180 inclusive and TX-1 through TX-12 inclusive

Beechcraft 400 Series Aeroplanes Beechcraft 400 Series Aeroplanes

Beechcraft 400 Series Aeroplanes

AD/BEECH 400/25 (continued)

James Coyne

Delegate of the Civil Aviation Safety Authority 1 April 2004

The above AD is notified in the Commonwealth of Australia Gazette on 21 April 2004.