Engine — Second-Stage Power Turbine (PT2) Blade Failure
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must remove and replace any suspect PT2 blades with non-affected blades before the next flight after 16 February 2024. Maintenance teams should refer to the specified Pratt & Whitney Canada Alert Service Bulletins for detailed removal and replacement instructions. Installation of the listed suspect blades is prohibited after the directive's effective date.
Summary
Canadian Airworthiness Directive CF-2024-05 is an emergency directive addressing second-stage power turbine (PT2) blade failures in Pratt & Whitney Canada PT6A and PT6E engine models. It applies to multiple PT6A-64 through PT6E-66XT variants equipped with suspect PT2 blades, part number 3056693-01. The directive mandates removal and replacement of affected blades to prevent potential engine power loss or in-flight shutdown.
What changed
CF-2024-05 introduces a new emergency airworthiness directive requiring immediate removal of specific second-stage power turbine blades identified by serial numbers in the applicable Pratt & Whitney Canada Alert Service Bulletins. It prohibits installation of these suspect blades in the affected engine models after the directive's effective date. This is a new regulation responding to recent blade failure events.
Why it matters
This directive is critical for aviation professionals because failure of the PT2 blades can lead to engine power loss or in-flight shutdown, which may compromise aircraft control and safety. Operators and maintenance organizations must ensure compliance to avoid unsafe conditions and regulatory violations. The directive also impacts parts management by restricting installation of certain blade serial numbers.
More for Pratt & Whitney Canada PT6A-67
All 5- EASA AD CF-2024-33Engine — First-Stage Power Turbine (PT1) Blade FailureSep 19, 2024
- EASA AD CF-2022-26Engine Bleed Air — Bleed-Off Valve Failure to CloseMay 18, 2022
- EASA AD CF-2021-37Engine Bleed Air – Bleed-Off Valve (BOV) Failure to CloseNov 9, 2021
- EASA AD CF-2021-20SUPERSEDED BY TCCA AD CF-2021-37May 19, 2021
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