Commonwealth legislation

AD/APU/11 - TSCP700 HPT Disc

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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This airworthiness directive requires operators to remove from service specific AlliedSignals TSCP700 high‑pressure turbine (HPT) discs identified by serial number in AlliedSignals Service Bulletin TSCP700‑49‑A7168 (Requirement; Applicability). Removal must occur before a disc reaches 7,500 cycles since new or by 2 January 2000, whichever is earlier (Compliance). Operators bear the cost and administrative burden; CASA issued the AD after the manufacturer advised some discs were made from non‑conforming material (Background; Note).

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Current sections

Direct links to the current provisions in AD/APU/11 - TSCP700 HPT Disc.

AD/APU/11 - TSCP700 HPT Disc

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Auxiliary Power Units

AD/APU/11 TSCP700 HPT Disc 1/97

Applicability: AlliedSignals TSCP700 Series Auxiliary Power Units, incorporating a High Pressure Turbine (HPT) disc identified with a serial number listed in AlliedSignals Service Bulletin TSCP700-49-A7168.

Requirement: Remove from service affected HPT discs as identified in AlliedSignals Service Bulletin TSCP700-49-A7168.

Note: FAA AD 96-18-17 also refers.

Compliance: Effective 2 January 1997; prior to accumulating 7500 cycles since new or no later than 2 January 2000, whichever occurs first.

Background: The manufacturer has advised that some HPT discs have been manufactured from nonconforming material which has required a reduction in service life.

Source text

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