AD: General Electric Company 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-06.02.25

Airborne-NextGen-06.03.25

AirborneUnlimited-06.04.25

Airborne-AffordableFlyers-06.05.25

AirborneUnlimited-06.06.25

Sun, Jan 16, 2022

AD: General Electric Company Turbofan Engines

AD 2021-26-06 Requires Visual Inspection Of The TGB Radial Gearshaft

The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) GE90 model turbofan engines.

This AD was prompted by two separate in-flight shutdowns (IFSDs) resulting from failure of the transfer gearbox (TGB) radial bevel gear (TGB radial gearshaft). This AD requires visual inspection of the TGB radial gearshaft and, depending on the results of the inspection, replacement of the TGB radial gearshaft. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective February 15, 2022.

Supplementary Information: The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all GE GE90-76B, GE90-85B, GE90-90B, GE90-94B, GE90-110B1, and GE90-115B model turbofan engines with a certain TGB radial gearshaft installed. The NPRM published in the Federal Register on August 12, 2021 (86 FR 44321). The NPRM was prompted by notification of two separate IFSDs resulting from the failure of the TGB radial gearshaft. After further investigation, the manufacturer determined that rework on the TGB radial gearshaft teeth chamfers during manufacturing may have caused local burrs and micro-cracks which led to high-cycle fatigue failure. GE subsequently issued service information to provide instructions for a one-time visual inspection of the affected radial gearshafts for the presence of burrs or rework on TGB radial gearshaft teeth chamfers. In the NPRM, the FAA proposed to require visual inspection of the TGB radial gearshaft and, depending on the results of the inspection, replacement of the TGB radial gearshaft. The FAA is issuing this AD to address the unsafe condition on these products.

FMI: www.regulations.gov

Advertisement

More News

Citation Operators Get Another Flight Data Connection for QA

LinxUs System Adds Capabilities for Data-Driven Operators Textron Aviation announced another option for operators processing their post-flight data, adding interoperability with GE>[...]

ANN's Daily Aero-Linx (06.01.25)

Aero Linx: The de Havilland Moth Club Ltd The de Havilland Moth Club evolved from a belief that an association of owners and operators of Moth aeroplanes should be formed to create>[...]

NTSB Final Report: Bellanca 8GCBC

(Pilot) Inadvertently Applied Excessive Braking Action, And The Airplane Nosed Over Analysis: The pilot reported that, while landing at a remote, rough and uneven airstrip in a tai>[...]

Aero-News: Quote of the Day (06.01.25)

“MCADT is committed to rapidly integrating armed first-person view drones into the FMF, enhancing small-unit lethality and providing organic capabilities that warfighters cur>[...]

Classic Aero-TV: High-Speed Match-up - Venom and GE Rebirth A Legend

From 2017 (YouTube Edition): Major Engine Supplier Joins Forces With Small Aircraft Manufacturer… GE recently made an agreement with Venom Aircraft to supply engines for the>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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