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Airworthiness Directive

AD 2014-17-08 79 FR 52172 Superseded

Federal Aviation Administration · 14 CFR part 39

Requires initial and repetitive borescope inspection (BSI) of compressor turbine (CT) blades, and the removal from service of blades that fail inspection.

Revised by AD 2014-17-08 R1Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
2014-20453
Amendment
39-17961
Published
2014-09-03
Effective
2014-10-08
Models covered
1

Last live check: 2026-08-19

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AD

2014-17-08

FR doc 2014-20453 · 79 FR 52172

AD 2014-17-08Published 2014-09-03Effective 2014-10-08

Revised by 2014-17-08 R1

Supersedence is read from the Federal Register text of the newer AD — the FAA publishes no structured field for it — and names only ADs held in our index.

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires initial and repetitive borescope inspection (BSI) of compressor turbine (CT) blades, and the removal from service of blades that fail inspection.

Full official abstract

We are adopting a new airworthiness directive (AD) for all Pratt & Whitney Canada Corp. (P&WC) PT6A-114 and PT6A-114A turboprop engines. This AD requires initial and repetitive borescope inspection (BSI) of compressor turbine (CT) blades, and the removal from service of blades that fail inspection. This AD was prompted by several incidents of CT blade failure, causing power loss, and engine failure. We are issuing this AD to prevent failure of CT blades, which could result in damage to the engine and damage to the airplane.

More directives for Pratt & Whitney Canada PT6A

  1. AD 2024-04-51 Airworthiness Directives; Pratt & Whitney Canada Corp. Engines Effective 2024-03-28
  2. AD 2022-08-13 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines Effective 2022-05-27
  3. AD 2016-05-13 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines Effective 2016-04-22
  4. AD 2014-17-08 R1 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines Effective 2015-06-05
  5. AD 2012-09-10 Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines Effective 2012-05-23

All Pratt & Whitney Canada PT6A directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index