AD/AS 355/71 Amdt 1 - Electrical Power System (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/AS 355/71 and issues the following 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.

Eurocopter AS 355 (Twin Ecureuil) Series Helicopters

AD/AS 355/71 Amdt 1

Electrical Power System 11/2003

Applicability: AS 355 helicopter versions E, F, F1, F2 and N, equipped for IFR flights, before embodiment of MOD 073019 or before compliance with Eurocopter AS 355 Alert Service Bulletin (ASB) No. 24.00.14, and equipped with the following part number electrical master boxes:

48xGC01Yxxx or 49xGC01Yxxx

Note 1: x in the part number indicates any digit.

Requirement: 1. If not previously accomplished in accordance with AD/AS 355/55 or the original issue of this Directive, revise the Aircraft Flight Manual (AFM) as follows:

1. Insert the following into the Limitations Section, Operating Limitations, Electrical and Hydraulic Power Systems Limitations (Section 2.1.13):

Landing Lights Do not use the landing light outside the landing and take-off phases.

b. Insert the following into the Emergency Procedures Section, Systems Malfunction, Electrical Power Systems Failures (Section 3.2.5):