AD/TPE 331/38 - Second Stage Turbine Wheel Assembly
1AD/TPE 331/38 - Second Stage Turbine Wheel Assembly
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series
AD/TPE 331/38 Second Stage Turbine Wheel Assembly 9/88
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Applicability: TPE 331 - 25; -43; -47; -55 and -61 series engines with second stage turbine wheels whose serial numbers are listed in the Requirement document.
Requirement: Inspect (and replace if necessary) the second stage turbine wheel assy in accordance with Garrett S.B. TPE 331-A72-0577.
Compliance: 1. For turbine wheels 0 to 650 hours time since new (TSN) prior to 700 hours TSN.
2. For turbine wheels more than 650 hours TSN within 50 engine operating hours after 30 June 1988.
Background: This Directive is issued to remove from service second stage turbine wheel assemblies which have been manufactured incorrectly.