Commonwealth legislation

AD/IAI-W/6 - Audio Intercom System - Warning Placard and Modification

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legislative instrument

Plain English Summary

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This AD requires owners/operators of certain IAI Westwind (Models 1123, 1124, 1124A) to fit a warning placard and carry out an intercom-system modification per IAI Service Bulletins WW‑25 / WW‑24‑23, affecting serial numbers 151–315 (except 294, 296, 297, 309, 310, 314). It responds to an incident where an intercom resistor overheated and risked fire; work must be done within 100 hours TIS after 31 May 1981, with costs and downtime borne by the aircraft owner/operator.

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AD/IAI-W/6 - Audio Intercom System - Warning Placard and Modification

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes

AD/IAI-W/6 Audio Intercom System - Warning Placard and Modification

5/81

Applicability: All models 1123, 1124 and 1124A with S/Nos. 151 to 315 except 294, 296, 297, 309,

310 and 314.

Document: IAI Service Bulletin WW-25 for Model 1123 aeroplanes. IAI Service Bulletin WW- 24-23 for Model 1124 and 1124A aeroplanes.

Note: FAA Emergency Airworthiness Directive 81-07-07 dated 20 March 1981 refers.

Compliance: Within 100 hours time in service after 31 May 1981.

Background: In an incident overseas a resistor in the intercom system overheated and initiated a fire on the ground. A check of Australian aircraft of this type revealed that overheating of the same resistor has occurred but not to the degree necessary to initiate a fire.

Source text

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

1 AD/IAI-W/6 - Audio Intercom System - Warning Placard and Modification