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AD/BELL 412/47 - Hoist Cable Cut Electrical Circuit
Bell Helicopter Textron 412 Series HelicBell Helicopter Textron 412 Series Helicopters
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Bell Helicopter Textron 412 Series Helicopters
| AD/BELL 412/47 | Hoist Cable Cut Electrical Circuit | 3/2006 |
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| Applicability: | Agusta-Bell AB 412 helicopters equipped with a hoist. |
|---|---|
| Note 1: Helicopters that have had ENAC Prescrizione di Aeronavigabilita’ (PA) (Airworthiness Directive) 2000-574 accomplished are not affected by this Directive. | |
| Requirement: | If not previously accomplished, modify the cable cut panel wire harness installation in accordance with Agusta Alert Service Bulletin 412-83 Revision A dated29 December 2000. |
| Note 2: ENAC (Italy) AD 2001-001 refers. | |
| Compliance: | Within 30 days after the effective date of this Directive. |
| This Airworthiness Directive becomes effective on 16 March 2006. | |
| Background: | An operator of an AB 412 experienced the loss of a hoist hook during flight due to the firing of the cartridge even though the hoist was not operating. Inspection of the electrical installation revealed chafing of electrical wiring in the cartridge firing circuit. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
1 February 2006