Commonwealth legislation

AD/BELL 412/48 - Overhead Circuit Breaker Panels

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This directive requires Agusta‑Bell AB 412 operators to inspect and, if needed, modify the overhead circuit breaker panels and associated wire harnesses to prevent chafing, short circuits and overheating, following Agusta Alert Service Bulletin 412‑81. Operators must complete the work within 30 days, so the operator bears the inspection, modification cost and aircraft downtime; the measure responds to an ENAC report of wiring overheating (Requirement; Compliance; Background).

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Direct links to the current provisions in AD/BELL 412/48 - Overhead Circuit Breaker Panels.

Bell Helicopter Textron 412 Series Helic

Bell Helicopter Textron 412 Series Helicopters

AD/BELL 412/48	Overhead Circuit Breaker Panels	3/2006

Applicability:	Agusta-Bell AB 412 helicopters.
Requirement:	If not previously accomplished, inspect and, if necessary, modify the overhead circuit breaker panels and wire harness installation in accordance with Agusta Alert Service Bulletin 412-81 dated 23 June 2000.
	Note: ENAC (Italy) AD 2000-331 refers.
Compliance:	Within 30 days after the effective date of this Directive.
	This Airworthiness Directive becomes effective on 16 March 2006.
Background:	The Ente Nazionale per l’Aviazione Civile (ENAC) of Italy has advised that an AB 412 operator has reported an electrical short circuit occurring with overheating and wires burning in the overhead circuit breaker panels.This Directive requires the inspection and/or modification of the overhead circuit breaker panels to prevent chafing and interference between wire harnesses and structures or components.

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James Coyne
Delegate of the Civil Aviation Safety Authority

1 February 2006

AD/BELL 412/48

Overhead Circuit Breaker Panels

3/2006

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

Bell Helicopter Textron 412 Series Helic Bell Helicopter Textron 412 Series Helicopters

Bell Helicopter Textron 412 Series Helicopters

AD/BELL 412/48	Overhead Circuit Breaker Panels	3/2006

Applicability:	Agusta-Bell AB 412 helicopters.
Requirement:	If not previously accomplished, inspect and, if necessary, modify the overhead circuit breaker panels and wire harness installation in accordance with Agusta Alert Service Bulletin 412-81 dated 23 June 2000.
	Note: ENAC (Italy) AD 2000-331 refers.
Compliance:	Within 30 days after the effective date of this Directive.
	This Airworthiness Directive becomes effective on 16 March 2006.
Background:	The Ente Nazionale per l’Aviazione Civile (ENAC) of Italy has advised that an AB 412 operator has reported an electrical short circuit occurring with overheating and wires burning in the overhead circuit breaker panels.This Directive requires the inspection and/or modification of the overhead circuit breaker panels to prevent chafing and interference between wire harnesses and structures or components.

AD/BELL 412/48 - Overhead Circuit Breaker Panels

Plain English Summary

Deep dive

Current sections

Bell Helicopter Textron 412 Series Helicopters

Bell Helicopter Textron 412 Series Helicopters

AD/BELL 412/48

AD/BELL 412/48

Overhead Circuit Breaker Panels

Overhead Circuit Breaker Panels

3/2006

3/2006

Source text

Bell Helicopter Textron 412 Series Helic Bell Helicopter Textron 412 Series Helicopters

Bell Helicopter Textron 412 Series Helicopters

AD/BELL 412/48 AD/BELL 412/48

AD/BELL 412/48

Overhead Circuit Breaker Panels Overhead Circuit Breaker Panels

Overhead Circuit Breaker Panels

3/2006 3/2006

3/2006