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-06.09.25

Airborne-NextGen-06.10.25

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-Linx (06.11.25)

Aero Linx: Florida Antique Biplane Association "Biplanes.....outrageous fun since 1903." That quote really defines what the Florida Antique Biplane Association (FABA) is all about.>[...]

Airborne Affordable Flyers 06.05.25: New RV15 Wing, Scalebirds, Waiex-B Honors

Also: AV-30-C Software Upgrade, Paraglider Extremes, EarthX STC for Pitts, Vintage Aircraft Association Not only have the folks at Van’s Aircraft designed a new wing for the >[...]

Airborne-NextGen 06.10.25: Trump v Drones, Walmart-Wing, VoltAero HPU 210

Also: Skyryse Update, Ukraine Drone Attack, FAA Admin Vote, Starlink Interference Issues President Trump has signed a series of executive orders that claim to strengthen domestic d>[...]

Airborne 06.09.25: NTSB Lawsuit, Sensenich 100K, Possible DJI Ban???

Also: Snowbirds Ready!, NATA Wants Bedford, ATC Infrastructure Investment, Russia Refutes Drone Damage Alvin Brown, former Jacksonville mayor, is suing President Donald Trump after>[...]

Airborne Affordable Flyers 06.12.25: Sonex High-Wing, Stunning 'RV916', VoltAero

Also: Women’s Air Race Classic, Sensenich 100K, ‘Premature’ GAMI G100UL Motion, Quicksilver Ultralights Sonex Aircraft announced that its high-wing prototype airc>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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