AD: Pratt & Whitney 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-06.16.25

Airborne-NextGen-06.17.25

AirborneUnlimited-06.11.25

Airborne-AffordableFlyers-06.12.25

AirborneUnlimited-06.06.25

Sun, Sep 09, 2012

AD: Pratt & Whitney Division Turbofan Engines

AD NUMBER: 2012-18-03

PRODUCT: Certain Pratt & Whitney Division PW4000-94" and PW4000-100" turbofan engines.
SUBJECT: Airworthiness Directive 2012-18-03
ACTION: Final Rule

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for the products listed above having a 1st stage high-pressure turbine (HPT) seal support, part number (P/N) 55K601 (contained within assembly P/N 55K602-01) or P/N 50K532 (contained within assembly P/N 50K530-01), installed.

This AD was prompted by 58 reports of cracked 1st stage HPT air seal rings, including 15 in-flight engine shutdowns. This AD requires removal and replacement of the 1st stage HPT seal support and inspection of the 1st stage HPT air seal ring.

The FAA is issuing this AD to prevent failure of the 1st stage HPT air seal ring, which could lead to an internal oil fire, uncontained engine failure, and damage to the airplane.

DATES: This AD is effective October 11, 2012.

FMI: AD

Advertisement

More News

ANN's Daily Aero-Term (06.16.25): Wide-Area Augmentation System (WAAS)

Wide-Area Augmentation System (WAAS) The WAAS is a satellite navigation system consisting of the equipment and software which augments the GPS Standard Positioning Service (SPS). T>[...]

ANN's Daily Aero-Linx (06.16.25)

Aero Linx: International Republic Seabee Owner's Club (IRSOC) This site includes links to Specifications, Limits and History of the Republic Seabee. We are always searching for oth>[...]

NTSB Final Report: Magniflight LLC M24 Orion Plus

Pilot Was Unable To Maintain Altitude And Made A Forced Landing In Tall Grass, During Which The Gyroplane Rolled Over Analysis: The pilot of the gyroplane reported several lane war>[...]

ANN's Daily Aero-Linx (06.18.25)

Aero Linx: MQ-1B Predator The MQ-1B Predator is an armed, multi-mission, medium-altitude, long-endurance remotely piloted aircraft that is employed primarily as an intelligence-col>[...]

Airborne-NextGen 06.17.25: JetZero Finds A Home, VX4 eVTOL, H55’s B23 Energic

Also: Electric Aircraft Symposium, Radia Windrunner Avionics, AIRO Debut, NASA’s Orion Ready California-based aerospace start-up JetZero has formally selected Greensboro, Nor>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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