NTSB Press Release

National Transportation Safety Board
Office of Public Affairs

NTSB provides investigative update on GEnx-1B engine failure in South Carolina

September 27, 2012

WASHINGTON - This is an update on the NTSB's investigation into a July 28, 2012 incident involving a Boeing 787-8 airplane that experienced a loss of thrust in the right engine-a General Electric (GE) GEnx-1B turbofan - during a pre-first flight, low-speed taxi test at Charleston International Airport in Charleston, South Carolina. As reported in an earlier update, the investigation found that the forward end of the fan midshaft (FMS) fractured and separated. Examination of other pre-delivery engines revealed a second GEnx-1B engine with a cracked FMS that was installed on a 787-8 airplane that had not yet flown.

The investigation is ongoing, and an initial inspection of all in-service GEnx engines has been completed. Most recently, on September 11, 2012, a Boeing 747-8F with GE GEnx-2B turbofan engines experienced a loss of power in the No. 1 engine during the takeoff roll at Shanghai Pudong International Airport, Shanghai, China. The Civil Aviation Administration of China (CAAC) is investigating this incident, and the NTSB is participating as the state of design and manufacture of the engine and aircraft. Any investigative updates regarding this incident will be provided by the CAAC.

As part the CAAC's investigation and in relation to the NTSB's ongoing investigation of the July 28th engine failure, preliminary findings from the examination of the Shanghai incident engine revealed that the FMS was intact and showed no indications of cracking. The examination and teardown of that engine is continuing under the direction of the CAAC.

NTSB Media Contact:
Office of Public Affairs
490 L'Enfant Plaza, SW
Washington, DC 20594
(202) 314-6100
Terry Williams



The National Transportation Safety Board (NTSB) is an independent federal agency charged with determining the probable cause
of transportation accidents, promoting transportation safety, and assisting victims of transportation accidents and their families.