AD/BEECH 1900/36 - Flap Flexible Driveshaft Assembly (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 1900 Series Aeroplanes

AD/BEECH 1900/36 Flap Flexible Driveshaft Assembly 13/2001 DM

Applicability: Beech 1900 (S/Nos UA-2 and UA-3), Beech 1900C (S/Nos UB-1 through UB-74, UC-1 through UC-174 and UD-1 through UD-6), and Beech 1900D (S/Nos UE-1through UE-345, UE-347 through UE-361, UE-364, UE- 367, UE-373 and UE-379).

Requirement: Inspect each of four flap flexible driveshaft assemblies for correct diagonal wrap and correct installation in accordance with Raytheon Mandatory Service Bulletin SB 27- 3397. Replace before further flight any driveshaft found to have an incorrect diagonal wrap or found to have been installed incorrectly.

Note: FAA AD 2001-18-07 refers.

Compliance: Unless previously accomplished, with 200 flight hours after the effective date of this Airworthiness Directive.

This Airworthiness Directive becomes effective on 7 November 2001.

Background: Failures of the flap flexible driveshaft have occurred, resulting in flap extension or retraction problems. Such a failure could result in an asymmetric flap condition in flight if the flap safety switch fails to function properly.