Commonwealth legislation

AD/SF340/73 - Electrical Wiring - Cabin Compartment Ceiling

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of SAAB SF340A (S/N 004–159) and 340B (S/N 160–459) aeroplanes to inspect the cabin‑ceiling wiring, repair any chafing and add extra chafe protection in accordance with SAAB Mandatory Service Bulletin SAAB 340-92-027 (Requirement). Operators must comply by either before 14,000 hours total time or within 4,000 hours after the AD’s effective date (Compliance). The measure responds to manufacturer reports of wire chafing that produced false warnings (Background).

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Current sections

Direct links to the current provisions in AD/SF340/73 - Electrical Wiring - Cabin Compartment Ceiling.

AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 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 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.

AD/SF340/73 Electrical Wiring - Cabin Co

AD/SF340/73 Electrical Wiring - Cabin Compartment Ceiling 2/2000

Applicability: Model SF340A aeroplanes, serial number (S/N) 004 through 159 and Model 340B aeroplanes, S/N 160 through 459.

Requirement: Inspect the wiring harness routed through the cabin compartment ceiling, repair (if necessary) and install additional chafe protection in accordance with SAAB Aircraft AB Mandatory Service Bulletin SAAB 340-92-027 dated 10 December 1999.

Note: LFV AD 1-149 refers.

Compliance: Either before 14,000 hours total time in service is accumulated or within 4,000 hours time in service after the effective date of this directive, whichever occurs latest.

This Airworthiness Directive becomes effective on 24 February 2000.

Background: The manufacturer has advised of wire chafing occurring in the cabin ceiling area, where the wire passed through a frame lightening hole, which caused a false tailpipe hot warning. The wire chafing could cause other false warning and signal failures.

This directive ensures early detection of chafing and introduces measures designed to minimise the likelihood of further chafing of occurring.

Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority

David Alan Villiers

Delegate of the Civil Aviation Safety Authority 17 January 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 27 January 2000.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

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 39.1 (1) of CAR 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 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.

AD/SF340/73 Electrical Wiring - Cabin Co AD/SF340/73 Electrical Wiring - Cabin Compartment Ceiling 2/2000

AD/SF340/73 Electrical Wiring - Cabin Compartment Ceiling 2/2000

Applicability: Model SF340A aeroplanes, serial number (S/N) 004 through 159 and Model 340B aeroplanes, S/N 160 through 459.

Note: LFV AD 1-149 refers.

Compliance: Either before 14,000 hours total time in service is accumulated or within 4,000 hours time in service after the effective date of this directive, whichever occurs latest.

This Airworthiness Directive becomes effective on 24 February 2000.

This directive ensures early detection of chafing and introduces measures designed to minimise the likelihood of further chafing of occurring.

David Alan Villiers

Delegate of the Civil Aviation Safety Authority 17 January 2000

The above AD is notified in the Commonwealth of Australia Gazette on 27 January 2000.