British Airways, the No. 2 engine of a Boeing 747–400 G-BNLG surged (whereby the airflow through the engine reverses) and suffered internal damage just after take off from Los Angeles on a flight to London Heathrow with 16 crew and 351 passengers on board. The crew shut the engine down and continued the climb and continued the flight, in line with BA's standard operating procedures for 4 engined aircraft. Because it was unable to attain normal cruising speeds and altitudes, the aircraft diverted to Manchester Airport, England. The United States Federal Aviation Administration had been critical of the Captain's decision and accused BA of operating the aircraft in an non airworthy condition.] In June 2006 the UK Air Accidents Investigation Branch recommended that the UK and US authorities review the policy on flight continuation and give clear guidance. This has not happened but the FAA have accepted the United Kingdom Civil Aviation Authority’s determination that the aircraft was airworthy.