Mr Cope said flight data recorders showed his flight path was different from the route he normally took home from Honister mine.

BBC: Mark Weir inquest: Helicopter crash death 'accident'

The probe is also analyzing data from flight data recorders on the aircraft, the NTSB said in a statement on its website.

NPR: US Regulator Asks Boeing For Full Battery History

French military spokesman Christophe Prazuck said the priority was looking for wreckage from the plane, before turning the search to flight data recorders.

BBC: Debris 'not from Air France jet'

The flight data recorders have not been recovered, and the plane's crew did not send any messages indicating problems before the plane disappeared.

CNN: Brazilian air force says debris was not from Air France crash

Paris (CNN) -- It should become easier to find flight data recorders in the wake of the Air France Flight 447 disaster, an aviation industry expert says.

CNN: Flight 447 sparks black box rethink

Investigators have found the flight data recorders from the plane.

BBC: Turkish plane crash in Amsterdam

Authorities said the cockpit and flight data recorders were recovered in excellent condition and information from both recorders was consistent with previous reports of the plane hitting a flock of birds before losing power in both engines.

CNN: Investigators find feather, other evidence on downed plane

The investigation will include scrutiny of the flight and voice data recorders, it said.

CNN: Report: Stray jet's pilots were on laptops

They collected data from commercial aircraft flight recorders, which record the location, duration and intensity of turbulence.

MSN: Blame gravity waves for turbulence - Technology & science - Science - LiveScience | NBC News