Commonwealth legislation

AD/HS 125/163 - Wire Bundle Chafing

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Commonwealth

Collection

legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of specified Hawker 800XP and Hawker 800 (U-125A) aeroplanes to do a one‑time detailed visual inspection of the panel “JA” wire bundle, confirm it is routed per the Raytheon service bulletin and that at least 6 mm clearance exists between the bundle and the fuel cross‑feed valve lever, and to repair or re‑route any chafed or improperly positioned wiring. The CASA delegate requires compliance; aircraft operators bear inspection, repair and downtime costs.

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AIRWORTHINESS DIRECTIVE

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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 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.

AD/HS 125/163 Wire Bundle Chafing 1/2001

Applicability: Model Hawker 800XP series aeroplanes, as listed in Raytheon Service Bulletin SB

24-3212, dated August 1999; and Hawker 800 (U-125A) series aeroplanes, as listed in Raytheon Service Bulletin SB 24-3213, Revision 1, dated February 2000.

Requirement: 1. Conduct a one-time detailed visual inspection of the panel "JA" wire bundle in accordance with the Accomplishment Instructions of SB 24-3212 (for Model 800XP series aeroplanes); or SB 24-3213, Revision 1 (for Model 800 (U-125A) series aeroplanes); as applicable. Ensure that:

the wire bundle is routed correctly, in accordance with Figure 1 of the applicable service bulletin, and

b. a minimum clearance of 6mm (0.25-inch) exists between the wire bundle from relay "KT" and the fuel cross-feed valve operating lever throughout its range of travel.

If the wire bundle is routed correctly and sufficient clearance exists, no further action is required by this Directive.

Note 1: For the purposes of this Directive, a detailed visual inspection is defined as: "An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required."

2. If the wire bundle is not routed correctly or if sufficient clearance does not exist, perform a detailed visual inspection of the wire bundle to relay "KT" for chafing, in accordance with the Accomplishment Instructions of SB 24-3212 or SB 24- 3213, Revision 1; as applicable.

If chafing is not detected, ensure that the wire bundle is routed correctly and ensure that a minimum clearance of 6mm (0.25-inch) exists between the wire bundle and the fuel cross-feed valve operating valve throughout its range of travel, in accordance with the applicable service bulletin.

b. If any chafing is detected, repair the chafed wire, ensure that the wire bundle is routed correctly and ensure that a minimum clearance of 6mm (0.25-inch) exists between the wire bundle and the fuel cross-feed valve operating valve throughout its range of travel, in accordance with the applicable service bulletin.

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 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.