AD/DAUPHIN/48 - Connectral Electrical Connection Modules (Cth)

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

Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters

AD/DAUPHIN/48 Connectral Electrical Connection Modules 10/98

DM

Applicability: SA 360C, SA 365C, C1, C2 and C3 helicopters equipped with electrical connection modules, all part numbers, manufactured by Connectral S.A. Suresnes, France if:

1. the helicopter was manufactured between 17 April 1995 and 1 August 1996, or

b. an optional item or equipment comprising an electrical circuit equipped with a module has been installed or replaced between 17 April 1995 and 1 August 1996, or

c. an electrical circuit has been modified with the installation, or replacement, of a module between 17 April 1995 and 1 August 1996.

Requirement: 1. Check the functions of the electrical circuits of the various systems in vibration conditions (with rotor spinning) in accordance with Paragraph 2 of Eurocopter SA 360C and SA 365C Mandatory Service Bulletin No 01.37 date code 98-24.

2. Check Connectral modules held as spares (either as parts or installed on equipments) in accordance with Paragraph 2.A. of Eurocopter SA 360C and SA 365C Mandatory Service Bulletin No 01.37 date code 98-24.

Note: DGAC AD 98-252-043(A) refers.

Compliance: 1. Within 200 flying hours from the effective date of this directive, but no later than 31 December 1998.

2. Prior to installation on a helicopter after the effective date of this directive. This airworthiness directive becomes effective on 5 August 1998. Background: Eurocopter has advised that a manufacturing defect has been found causing electrical discontinuity. The defect only involves electrical connection modules manufactured by Connectral manufactured from week 95/16 to week 96/21. This directive requires the function checking of essential electrical circuits to detect defective electrical connection modules.