AD: Pratt & Whitney | 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

Sun, Aug 07, 2011

AD: Pratt & Whitney

AD NUMBER: 2011-14-07

MANUFACTURER: Pratt & Whitney (PW) Models PW4074 and PW4077 Turbofan Engines
SUBJECT: Airworthiness Directive 2011-14-07
ACTION: Final rule.

SUMMARY: This AD requires removing the 15th stage HPC disk within 12,000 cycles since new (CSN) or, for any disks that exceed 12,000 CSN after the effective date of this AD using a drawdown plan that includes a borescope inspection (BSI) or eddy current inspection (ECI) of the rim for cracks. This AD was prompted by multiple shop findings of cracked 15th stage HPC disks. The FAA is issuing this AD to prevent cracks from propagating into the disk bolt holes, which could result in a failure of the 15th stage HPC disk, uncontained engine failure, and damage to the airplane. This AD is effective September 8, 2011.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/0FCCD3B9AE1FDDBC862578E200453A51?OpenDocument

Advertisement

More News

TikToker Arrested After Landing His C182 in Antarctica

19-Year-Old Pilot Was Attempting to Fly Solo to All Seven Continents On his journey to become the first pilot to land solo on all seven continents, 19-year-old Ethan Guo has hit a >[...]

Classic Aero-TV: Versatile AND Practical - The All-Seeing Aeroprakt A-22 LSA

From 2017 (YouTube Edition): A Quality LSA For Well Under $100k… Aeroprakt unveiled its new LSA at the Deland Sport Aviation Showcase in November. Dennis Long, U.S. Importer>[...]

ANN's Daily Aero-Term (06.27.25): Hazardous Weather Information

Hazardous Weather Information Summary of significant meteorological information (SIGMET/WS), convective significant meteorological information (convective SIGMET/WST), urgent pilot>[...]

ANN's Daily Aero-Linx (06.27.25)

Aero Linx: Historic Aircraft Association (HAA) The Historic Aircraft Association (HAA) was founded in 1979 with the aim of furthering the safe flying of historic aircraft in the UK>[...]

Aero-News: Quote of the Day (06.27.25)

"We would like to remember Liam not just for the way he left this world, but for how he lived in it... Liam was fearless, not necessarily because he wasn't afraid but because he re>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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