AD/BEECH 60/46 - Lower Forward Wing Bolt (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation 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 CAR 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 60 (Duke) Series Aeroplanes

AD/BEECH 60/46 Lower Forward Wing Bolt 5/2001

Applicability: Beech Models 60, A60, and B60 aircraft, serial numbers P-4 through P-596. Requirement: 1. Inspect the lower forward wing bolts (left and right) for the "Mercury Aerospace" trademark in accordance with the Accomplishment Instructions of Raytheon Mandatory Service Bulletin SB 57-3328 Issued July 1999.

2. Replace any lower forward wing bolt that has the "Mercury Aerospace" trademark with an FAA-approved bolt, and replace the associated nuts and washers; in accordance with SB 57-3328.

Note: FAA AD 2001-02-10 Amdt 39-12094 refers.

Compliance: 1. Within 100 hours' time in service after 17 May 2001, unless already accomplished.

2. Before further flight.

This Airworthiness Directive becomes effective on 17 May 2001.

Background: The FAA received a report that wing bolts supplied by Mercury Aerospace may not meet the required Rockwell hardness specifications. Continued aircraft operation with such bolts could result in fatigue failure of the bolts with consequent separation of the wing from the aircraft.