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AD/TPE 331/41 Amdt 3 Third Stage Turbine Stators
Honeywell International Turbine Engines Honeywell International Turbine Engines - TPE 331 Series
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Honeywell International Turbine Engines - TPE 331 Series
| AD/TPE 331/41 Amdt 3 | Third Stage Turbine Stators | 17/2021 |
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| Applicability: | Honeywell International (formerly AlliedSignal / Garrett/AiResearch) TPE331-1, -2,-2UA, -3U, -3UW, -5, -5A, -5AB, -5B, -6, -6A model engines fitted with third stage turbine stator assemblies Part Number (P/N) 868379-1 or 868379-3. |
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| Requirement: | 1. Inspect third stage stator assemblies P/N 868379-1 and 868379-3 in accordance with Honeywell Alert Service Bulletin (ASB) TPE331-A72-559, as in force from time to time, and2. Re-identify P/N 868379-1 third stage stator assemblies in accordance with Honeywell ASB TPE/TSE331-A72-0384, as in force from time to time.Note 1: United States of America Federal Aviation Administration (FAA) Airworthiness Directive (AD) 93-05-09 is the basis of this AD.Note 2: CASA AD/ENG/7 requires third stage turbine stators be replaced at intervals as detailed in the latest issue of Honeywell Service Bulletin TPE/TSE331‑72-0019 "Service Life Limits".Note 3: Where the cycle count of a third stage turbine stator assembly is unknown, the total component hours in service since new shall be multiplied by 1.5 to establish component cycles. |
| Compliance: | At next access to the affected part or within 200 cycles after the commencement date of this AD, whichever occurs first, unless previously accomplished in accordance with a previous issue of this Directive. |
| This AD commences on 27 August 2021. | |
| Background: | This Directive was originally issued to require inspection, re-identification and replacement of certain third stage turbine stator assemblies.Amendment 1 reduced the life limits for certain stator assemblies.Amendment 2 deleted from this Directive, the requirement to replace certain stator assemblies. The requirements for removal of third stage stator assemblies are now detailed in CASA AD/ENG/7. |
| Amendment 3 of this AD removes obsolete references and makes minor editorial changes to reflect current requirements. |
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David Punshon
Delegate of the Civil Aviation Safety Authority
12 August 2021