AD: Pratt & Whitney Canada Turboprop Engines | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-12.08.25

AirborneNextGen-
12.09.25

Airborne-Unlimited-12.10.25

Airborne-FltTraining-12.04.25

AirborneUnlimited-12.05.25

AFE 2025 LIVE MOSAIC Town Hall (Archived): www.airborne-live.net

Fri, May 11, 2012

AD: Pratt & Whitney Canada Turboprop Engines

AD NUMBER: 2012-09-10

PRODUCT: Certain Pratt & Whitney Canada PT6A-38, -41, -42, -42A, -61, -64, -66, -66B, -110, -112, -114, -114A, -121, -135, and -135A series turboprop engines.
SUBJECT: Airworthiness Directive 2012-09-10
ACTION: Final rule; request for comments.

SUMMARY: This AD requires removal from service of certain part manufacturer approval (PMA) replacement Timken Alcor Aerospace Technologies, Inc. (TAATI) first stage sun gears and planet gears installed in the reduction gearbox.

This AD was prompted by failures of certain first stage sun gears manufactured by TAATI. The FAA Is issuing this AD to prevent failure of the sun gear and planet gears which will result in an engine in-flight shut down, possible uncontained engine failure, aircraft damage, and serious injuries.

DATES: This AD becomes effective May 23, 2012. Comments are due by June 22, 2012.

FMI: AD

Advertisement

More News

ANN's Daily Aero-Term (12.08.25): Decision Altitude (DA)

Decision Altitude (DA) A specified altitude (mean sea level (MSL)) on an instrument approach procedure (ILS, GLS, vertically guided RNAV) at which the pilot must decide whether to >[...]

ANN's Daily Aero-Linx (12.08.25)

Aero Linx: T-34 Association, Inc. The T-34 Association was formed in July 1975 so that individuals purchasing then military surplus T-34As had an organization which would provide s>[...]

NTSB Final Report: Piper PA-31T3

As He Released The Brakes To Begin Taxiing, The Brake Pedals Went To The Floor With No Braking Action Analysis: The pilot reported that during engine start up, he applied the brake>[...]

Aero-News: Quote of the Day (12.08.25)

“Legislation like the Mental Health in Aviation Act is still imperative to hold the FAA accountable for the changes they clearly acknowledge need to be made... We cannot wait>[...]

Airborne-Flight Training 12.04.25: Ldg Fee Danger, Av Mental Health, PC-7 MKX

Also: IAE Acquires Diamond Trainers, Army Drones, FedEx Pilots Warning, DA62 MPP To Dresden Tech Uni The danger to the flight training industry and our future pilots is clear. Dona>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC