Commonwealth legislation

AD/AL 250/9 - Engine Operating Restrictions to Reduce Torque-Meter Shaftgears Stress

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legislative instrument

Plain English Summary

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This is a Part 39 airworthiness directive entry from CASA affecting Allison 250‑C18 engines fitted with torque‑meter shaftgears P/N 6854147 or 6871186. It mandates following the operating restrictions in manufacturer Allison 250 CSL No. 34 to reduce shaftgear stress, with some actions due at the next daily/overnight inspection after 5 Sept 1969 and others required forthwith. Operators bear the compliance costs and must obtain and apply the CSL.

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AD/AL 250/9 - Engine Operating Restrictions to Reduce Torque-Meter Shaftgears Stress

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Allison Turbine Engines - 250 Series

AD/AL 250/9 Engine Operating Restrictions to Reduce

Torque-Meter Shaftgears Stress

Applicability: All 250-C18 Series fitted with P/N 6854147 or P/N 6871186 Torque-meter Shaftgears.

Document: Allison 250 CSL No. 34.

9/69

Compliance: For para. 1 - at next daily or overnight inspection after 5 Sept.69. For para. 2 - Forthwith.

Source text

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