AD: Engine Alliance 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-07.08.24

Airborne-NextGen-07.09.24

Airborne-Unlimited-07.10.24 HOLIDAY

Airborne-AffordableFlyers-07.05.24

Fri, Jun 18, 2021

AD: Engine Alliance Turbofan Engines

AD 2021-12-01 Lowers The Initial Inspection Threshold And Requires Repetitive Ultrasonic Inspections

The FAA is superseding Airworthiness Directive (AD) 2019-25-13, which applied to all Engine Alliance (EA) GP7270 and GP7277 model turbofan engines with a certain low-pressure compressor (LPC) 1st-stage fan blade installed.

AD 2019-25-13 required an ultrasonic inspection of the affected LPC 1st-stage fan blades and replacement of any affected LPC 1st-stage fan blade that fails the inspection. This AD lowers the initial inspection threshold and requires repetitive ultrasonic inspections on affected LPC 1st-stage fan blades. This AD was prompted by a report of an in-flight shutdown (IFSD) of an engine due to the fracture of multiple LPC 1st-stage fan blades. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective June 28, 2021.

Supplementary Information: The FAA issued AD 2019-25-13, Amendment 39-21011 (84 FR 71770, December 30, 2019), (AD 2019-25-13), for all EA GP7270 and GP7277 model turbofan engines with a certain LPC 1ststage fan blade installed. AD 2019-25-13 required an ultrasonic inspection of the affected LPC 1ststage fan blades and replacement of any affected fan blades that fail the inspection. AD 2019-25-13 resulted from a report of an IFSD of an engine due to the fracture of multiple LPC 1st-stage fan blades. After an analysis of these fractures, the manufacturer determined the fan blades experienced cracks that originated on the internal surface of the convex airfoil and propagated to the point of failure. The cracks originated in a microtexture area that can result in a low-cycle fatigue debit that may allow a crack to initiate and propagate to failure. The FAA issued AD 2019-25-13 to prevent failure of the fan blade.

FMI: www.regulations.gov

Advertisement

More News

ANN's Daily Aero-Term (07.09.24): Mach Technique [ICAO]

Mach Technique [ICAO] Describes a control technique used by air traffic control whereby turbojet aircraft operating successively along suitable routes are cleared to maintain appro>[...]

Aero-News: Quote of the Day (07.09.24)

“Test pilot Ed Vesley reported no significant issues throughout the one-hour flight. We'll now continue to fly the PT-19 for a few more hours to break in the engine, and then>[...]

Airborne 07.03.24: Gunfighter P51/Doc B-29, OSH Fun Fly Zone, 737 Buyback

Also: MD Heli Changes, Falcon 9 Record, NAFI HoF Inductees, iFly EFB - Autopilot The B-29 Doc’s History Restored Tour will be in Columbia, Missouri, for a brief four-day stop>[...]

Airborne-NextGen 07.09.24: Skyryse One, AFS SPRINT, AAL Low-Carbon

Also: GE Hybrid Electric Engine, Simulated Mars Mission, Drone Exhibition, Shell Steps Back From SAF Skyryse, designer and developer of the One, has announced their first public ex>[...]

Airborne 07.08.24: Polaris Dawn!, RCAF at Osh, “That’s All, Brother”

Also: Eco Aero-Vandalism, Simulated Mars, KC-46A Pegasus Record, USAF Warrant Officers Polaris Dawn is the first of the Polaris Program, a series of three planned space missions al>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2024 Web Development & Design by Pauli Systems, LC