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-12.08.25

AirborneNextGen-
12.09.25

Airborne-Unlimited-12.10.25

Airborne-AffordableFlyers-12.11.25

AirborneUnlimited-12.12.25

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

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 FAQ: Contributing To Aero-TV

How To Get A Story On Aero-TV News/Feature Programming How do I submit a story idea or lead to Aero-TV? If you would like to submit a story idea or lead, please contact Jim Campbel>[...]

Aero-News: Quote of the Day (12.10.25)

“As the excitement builds for the world of flight returning to Oshkosh in 2026, we wanted to ensure that advance tickets are available for those who enjoy giving AirVenture t>[...]

ANN's Daily Aero-Term (12.10.25): North Atlantic High Level Airspace (NAT HLA)

North Atlantic High Level Airspace (NAT HLA) That volume of airspace (as defined in ICAO Document 7030) between FL 285 and FL 420 within the Oceanic Control Areas of Bodo Oceanic, >[...]

Airborne 12.08.25: Samaritan’s Purse Hijack, FAA Med Relief, China Rocket Fail

Also: Cosmonaut Kicked Out, Airbus Scales Back, AF Silver Star, Russian A-60 Clobbered A Samaritan’s Purse humanitarian flight was hijacked on Tuesday, December 2, while atte>[...]

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