NTSB: Fan Blade Separation Led To United B777 Cowling Loss
Preliminary Report Offers Few Other Details The NTSB has released a preliminary report on an incident which occurred on a United Airlines flight from San Francisco to Honolulu February 13.
According to the report, at about 12:00 PM HST, United Airlines flight 1175, a Boeing 777, N773UA, experienced an in-flight separation of a fan blade and subsequent loss of the inlet and fan cowls of the right engine, a Pratt & Whitney PW4077 during descent into Daniel K. Inouye International Airport (KHNL), Honolulu, Hawaii.
Shortly after initial descent, passing through about flight level 327, the flight crew received warnings of an engine compressor stall, and shut down the engine. The crew declared an emergency and proceeded to KHNL without further incident.
There were no injuries to the 363 passengers and 10 crew members and the airplane received minor damage. The airplane was operating under 14 CFR Part 121 as a regularly scheduled passenger flight and had originated from San Francisco International Airport (KSFO), San Francisco, California.
In a statement released at the time of the incident, United Airlines said its pilots "followed all necessary protocols to safely land the aircraft."