AD/BEECH 400/26 - Spoiler Mixer Bay Drain Holes

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

AIRWORTHINESS DIRECTIVE

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.

Beechcraft 400 Series Aeroplanes

AD/BEECH 400/26 Spoiler Mixer Bay Drain Holes 1/2005

Applicability: Model 400, 400A, and 400T series aircraft.

Requirement: 1. Accomplish a visual inspection of the spoiler mixer bay panels to determine the presence of drain holes, in accordance with the Accomplishment Instructions of Raytheon Service Bulletin SB 53-3486, dated June 2003. Following the inspection, before further flight, drill at least one new drain hole, and any additional drain holes needed.

2. Accomplish a visual inspection for discrepancies of the sealant on the relief cutout on the aft pressure bulkhead, and of the small triangular-shaped baffles at left butt line BL 19.13 and right butt line BL 10.43; in accordance with SB

53-3486. Accomplish any applicable corrective actions before further flight.

Compliance: Within 400 flight hours or 12 months after 20 January 2005, whichever occurs first.

This Airworthiness Directive becomes effective on 20 January 2005.

Background: The FAA received a report of fuel leaking from components in the spoiler mixer bay of several Model 400A series aircraft. The accumulation of fuel and/or fuel vapour in the spoiler mixer bay and/or the aft fuselage compartment could result in a fire in the aircraft.

David Villiers

Delegate of the Civil Aviation Safety Authority 30 November 2004

The above AD is notified in the Commonwealth of Australia Gazette on 22 December 2004.

Page 1 of 1