Thai authorities and representatives from Boeing and General Electric (GE) are investigating an incident last week involving an engine fire on a Thai Airways International aircraft.
The Boeing 747-400 took off from Bangkok's Suvarnabhumi Airport for Chiang Mai on 3 February, but was forced to return to Bangkok 10mins after take-off when an engine fire broke out. No injuries were reported.
Thai has since grounded the aircraft, registration HS-TGB, says an airline spokeswoman.
The aircraft is powered by GE CF6-80C2B1F engines and was built in 2001, says Flightglobal's ACAS database.
An investigation team, led by the Thai government, is looking into the cause of the fire, says the spokeswoman.
"We do not wish to speculate [on the cause] until we get the results of the investigation team," she adds.
The team includes engineers from the government, and representatives from Thai, Boeing and GE, says the spokeswoman.
A representative from the US National Transportation Safety Board has been invited to be part of the team, she adds.
The incident has been classified as "serious" according to ICAO regulations as there was fire, says the spokeswoman.
Results of the investigation should be available within two weeks, she adds.
Source: Air Transport Intelligence news