AD/B717/25 - Power Conversion Distribution Unit (Cth)

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 39.001(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.

Boeing 717 Series Aeroplanes AD/B717/25 Power Coversion Distribution Unit 11/2007

Applicability: Model 717-200 aeroplanes. Requirement: 1. Inspect the power conversion distribution units (PCDU) to determine its part number. A review of aeroplane maintenance records is acceptable in lieu of this inspection if the part number can be conclusively determined from that review. If the PCDU part number is 762904E or higher, no further work is required by this Directive. 2. If, as a result of the Requirement 1 inspection, it is determined that the PCDU part number is below 762904E, carry out the following: a. Modify the PCDU in accordance with Boeing Alert Service Bulletin (ASB) 717-24A0028, Revision 1, dated 20 December 2005. Note 1: A modification accomplished before the effective date of this Directive in accordance with Boeing ASB 717-24A0028, dated 24 November 2004, is acceptable for compliance with Requirement 2.a. Note 2: Boeing ASB 717-24A0028 refers to Hamilton Sundstrand Service Bulletin 40EGS22P-24-10, Revision 1, dated 11 May 2005, as an additional source of service information for the modification. b. Accomplish the applicable actions specified in Table 1.