Commonwealth legislation

AD/SF340/36 - Sensor Loops

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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 SF340 aeroplanes (serials SF340A‑004 to SF340A‑159 and SF340B‑160 to SF340B‑339) to carry out the sensor‑loop modification or relocation specified in Saab Service Bulletin 340‑36‑006, replacing the earlier bulletin, by 1 January 1993.

The mandated change—enforced by the Civil Aviation Safety Authority—aims to ensure bleed‑air leaks are detected and to prevent fuselage‑skin damage or reduced structural integrity; operators bear the cost and must follow the prescribed Saab procedure.

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AD/SF340/36 - Sensor Loops

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source SAAB SF340 Series Aeroplanes

AD/SF340/36 Sensor Loops 11/92

Applicability: All model SF340 S/N SF340A-004 thru 159 and S/N340B-160 thru 339 inclusive.

Requirement: Action in accordance with SAAB Service Bulletin 340-36-006 which supersedes and cancels SAAB Service Bulletin 340-36-005.

Note: Swedish Airworthiness Directive SAD No. 1-054 refers and supersedes SAD No. 1-053.

Compliance: Prior to 1 January 1993.

Background: Failure to relocate the sensor loops could result in a bleed air system hot air leak going undetected. If the leak continued, a reduction of structural integrity due to damage/disbonding of the fuselage skin could occur.

Source text

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