AD: Pratt & Whitney (P&W) Division Turbofan 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-06.23.25

Airborne-NextGen-06.24.25

AirborneUnlimited-06.25.25

Airborne-AffordableFlyers-06.26.25

AirborneUnlimited-06.27.25

Thu, Oct 04, 2012

AD: Pratt & Whitney (P&W) Division Turbofan Engines

AD NUMBER: 2012-14-09

PRODUCT: Certain P&W PW4000 series turbofan engines.
SUBJECT: Airworthiness Directive 2012-14-09
ACTION: Final Rule

SUMMARY:  This AD was prompted by reports of 3rd and 4th stage vane fractures in the low pressure turbine (LPT) of certain PW4000-94' and PW4000-100' turbofan engines. This AD requires dimensional inspections of LPT 3rd stage vanes and the rear turbine case, inspection of LPT 4th stage vanes at the next LPT overhaul and removal of vanes with non-conforming airfoil fillet radii and vanes with more than one strip and recoat repair. This AD also requires disassembly and reassembly of the 2nd stage high-pressure turbine (HPT) rotor and 3rd stage LPT rotor at the next HPT and LPT overhauls.

The FAA is issuing this AD to prevent 3rd and 4th stage vane fractures in the LPT, damage to the LPT rotor, uncontained engine failure, and damage to the airplane.

DATES: This AD is effective November 7, 2012.

FMI: AD

Advertisement

More News

NTSB Final Report: Rutan Long-EZ

He Attempted To Restart The Engine Three Times. On The Third Restart Attempt, He Noticed That Flames Were Coming Out From The Right Wing Near The Fuel Cap Analysis: The pilot repor>[...]

ANN FAQ: Turn On Post Notifications

Make Sure You NEVER Miss A New Story From Aero-News Network Do you ever feel like you never see posts from a certain person or page on Facebook or Instagram? Here’s how you c>[...]

Classic Aero-TV: ICAS Perspectives - Advice for New Air Show Performers

From 2009 (YouTube Edition): Leading Air Show Performers Give Their Best Advice for Newcomers On December 6th through December 9th, the Paris Las Vegas Hotel hosted over 1,500 air >[...]

ANN's Daily Aero-Linx (06.28.25)

Aero Linx: NASA ASRS ASRS captures confidential reports, analyzes the resulting aviation safety data, and disseminates vital information to the aviation community. The ASRS is an i>[...]

Aero-News: Quote of the Day (06.28.25)

“For our inaugural Pylon Racing Seminar in Roswell, we were thrilled to certify 60 pilots across our six closed-course pylon race classes. Not only did this year’s PRS >[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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