FAA Issues Emergency AD On CF34-3B1 Turbofans | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne-Unmanned w/AUVSI

Airborne On ANN

AMA 06.22.17

Airborne 06.26.17

Airborne 06.27.17

Airborne 06.28.17

Airborne 06.22.17

Airborne 06.23.17

Airborne-Unmanned 06.27.17

Airborne-YouTube

AMA 06.22.17

Airborne 06.26.17

Airborne 06.27.17

Airborne 06.28.17

Airborne 06.22.17

Airborne 06.23.17

Airborne-Unmanned 06.27.17

XPONENTIAL Innovation Preview -- www.allthingsunmanned.com

Wed, Feb 21, 2007

FAA Issues Emergency AD On CF34-3B1 Turbofans

Says Engine Marking Procedure Led To Fan Disk Failure

Less than one month after a Mesa Airlines regional airliner suffered an inflight uncontained fan disk failure in one of its engines, the FAA has issued an emergency Airworthiness Directive requiring operators of the type to perform inspections on their engines.

As Aero-News reported, the CRJ-200 experienced failure of its number one engine January 25, approximately 70 nm from Denver International Airport, while climbing through 24,000 feet. The failure took out the forward engine cowling, but the aircraft was otherwise unscathed. The flight returned uneventfully to Denver and none of the 55 persons aboard was injured.

In its Airworthiness Directive, the FAA states an inspection of the GE CF34-3B1 engine showed the front section of the engine failed, resulting in the fan, forward cowlings, and fan reverser departing from the engine. A subsequent inspection of the recovered segments of the fan disk, found an electrical arc-out defect at the fracture origin site.

The FAA adds the fan disk was marked using the electro-chemical etchmarking (ECM) procedure during engine assembly. If the ECM procedure is performed incorrectly, an arc-out defect can occur. This arc-out defect, caused during part marking, resulted in the uncontained failure.

Operators of affected aircraft may refer to GE Alert Service Bulletin (ASB) No. CF34-BJ S/B 72-A0213, dated February 15, 2007, and GE ASB No. CF34-AL S/B 72-A0232, dated February 15, 2007 for procedures for visual and tactile inspection of certain areas of certain serial number (SN) fan disks, to determine if those fan disks are similarly affected.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

Advertisement

More News

ANN's 2017 AirVenture Innovation Preview is Going To Be A Stunner!

Early Confirmations Show An Amazing Assortment of Exciting New Products and Technologies! It may be the most impressive line-up of new technology to ever be featured in our Innovat>[...]

Airborne 06.27.17: SpaceX Doubles!, Sean Tucker Retirement, FA Changes

Also: Shoreham Update, Aero-Calendar, AUVSI, Fighter Pilots, André Borschberg, Airport Crimes, Drone Conference SpaceX, in the midst of a greatly accelerated launch pace, pu>[...]

Airborne-Unmanned 06.27.17: AUVSI On Senate Bill, Intel Olympics, NIGHTWARDEN

Also: DRL Winner $$, Kespry Enters Insurance Sector, Drone Sim Market, Automated Vehicles Symposium Brian Wynne, president and CEO of AUVSI, issued a statement on the unmanned airc>[...]

AMA Drone Report 06.22.17: FAA Reauthorization, Rotor Riot Int'l, DRL on ESPN

Also: Drones at Oshkosh!, Drone Regulatory Effort, AMA Drone Report-Help Wanted, Aero-TV: MultiGP Drone Racing The House of Representatives has published initial language to reauth>[...]

U.S. Rocketry Students Impress At Internationals, Win Gold

Students From Festus, MO Become Third Consecutive U.S. Team To Take Top Spot The 10-student team from Festus High School in Festus, MO bested the world's best rocketry teams and to>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC