The company that made an engine that caught fire as a British Airways plane was taking off from Las Vegas is inspecting other engine parts.

The British Airways Boeing 777 was on a McCarran International Airport runway bound for London on September 8 when the crew screeched the plane to a halt as flames billowed. All 157 passengers and 13 crew members on Flight 2276 survived, some with minor injuries.

Updated findings released by America's National Transportation Safety Board have indicated the fire started with the spool in the left engine. The spool's function in the high-pressure compressor gives the plane power, making it a key part of the engine.

"We're doing a full pare down of the spool and analysis of the components," said Rick Kennedy, a spokesman for GE Aviation.

The twin-engine Boeing was built in 1998 and registered to British Airways a year later. By the end of 2013 it had flown nearly 77,000 hours, according to the Civil Aviation Authority. GE90 engines are used in most Boeing 777s.

GE Aviation said the spool, which holds the blades in the GE90-85B engine, was among the first made for that model in 1995.

The manufacturer is voluntarily analysing 38 similar spools that are about the same age but are out of service awaiting maintenance and repairs. Other inspections of working engines are expected.

"The 38 will help us decide what engines might need to be inspected," Mr Kennedy said.

GE said this is the first engine failure of its kind, as spools can be similar in design but are not built identically. There are about 400 base GE90 engines being used to power 167 planes.

NTSB spokesman Eric Weiss said there was no talk about grounding any planes with similar spools.

The NTSB also said the case would be analysed to determine a probable cause after the current fact finding process. A final report will not be issued for several months.