Malaysian officials released the transcript of the last communications from the cockpit of missing Malaysia Airlines Flight MH370.
The release of the transcript, which shows that nothing unusual was said, came after authorities earlier released a statement saying the final words received by ground controllers at 1:19 a.m. on March 8 from the cockpit of Flight MH370 were "Good night Malaysian three-seven-zero." Previously, the government said the final words were "All right, good night."
The statement didn't explain the discrepancy. The statement also said investigators were still trying to determine whether the pilot or co-pilot spoke the words.
At a news conference in Perth on Tuesday, retired Australian air chief Angus Houston called the search effort for the missing jetliner the most challenging one he has ever seen. The starting point for any search is the last known position of the vehicle or aircraft, he said.
"In this particular case, the last known position was a long, long way from where the aircraft appears to have gone," he said. "It's very complex, it's very demanding."
"What we really need now is to find debris, wreckage from the aircraft," he said. "This could drag on for a long time."
Houston heads the joint agency coordinating the multinational search effort for the Boeing 777, which vanished on March 8 with 239 people on board bound for Beijing from Kuala Lumpur.
The conversation, as it was released, between the cockpit and various units of air traffic control, Delivery, Ground, Tower, Approach and Radar, the time the audio was recorded, and what was spoken:
Cockpit at 12:25:53: Delivery MAS 370 Good Morning
Delivery at 12:26:02: MAS 370 Standby and Malaysia Six is cleared to Frankfurt via AGOSA Alpha Departure six thousand feet squawk two one zero six
Delivery at 12:26:19: ... MAS 370 request level
Cockpit at 12:26:21: MAS 370 we are ready requesting flight level three five zero to Beijing
Delivery at 12:26:39: MAS 370 is cleared to Beijing via PIBOS A Departure Six Thousand Feet squawk two one five seven
Cockpit at 12:26:45: Beijing PIBOS A Six Thousand Squawk two one five seven MAS 370 Thank You
Delivery at 12:26:53: MAS 370 Welcome over to ground
Cockpit at 12:26:55: Good Day
Cockpit at 12:27:27: Ground MAS370 Good morning Charlie One Requesting push and start
Ground at 12:27:34: MAS370 Lumpur Ground Morning Push back and start approved Runway 32 Right Exit via Sierra 4
Cockpit at 12:27:40: Push back and start approved 32 Right Exit via Sierra 4 POB 239 Mike Romeo Oscar
Ground at 12:27:45: Copied
Cockpit at 12:32:13: MAS377 request taxi.
Ground at 12:32:26: MAS37..... (garbled) ... standard route. Hold short Bravo
Ground at 12:32:30: Ground, MAS370. You are unreadable. Say again.
Ground at 12:32:38: MAS370 taxi to holding point Alfa 11 Runway 32 Right via standard route. Hold short of Bravo.
Cockpit at 12:32:42: Alfa 11 Standard route Hold short Bravo MAS370.
Ground at 12:35:53: MAS 370 Tower
Ground at 12:36:19: (garbled) ... Tower ... (garbled)
Cockpit (no time given): 1188 MAS370 Thank you
Cockpit at 12:36:30: Tower MAS370 Morning
Tower at 12:36:38: MAS370 good morning. Lumpur Tower. Holding point.. (garbled)..10 32 Right
Cockpit at 12:36:50: Alfa 10 MAS370
Tower at 12:38:43: 370 line up 32 Right Alfa 10.
Cockpit (no time given): Line up 32 Right Alfa 10 MAS370.
Tower at 12:40:38: 370 32 Right Cleared for take-off. Good night.
Cockpit (no time given): 32 Right Cleared for take-off MAS370. Thank you Bye.
Cockpit at 12:42:05: Departure Malaysian Three Seven Zero
Approach at 12:42:10: Malaysian Three Seven Zero selamat pagi identified. Climb flight level one eight zero cancel SID turn right direct to IGARI
Cockpit at 12:42:48: Okay level one eight zero direct IGARI Malaysian one err Three Seven Zero
Approach at 12:42:52: Malaysian Three Seven Zero contact Lumpur Radar One Three Two Six good night
Cockpit (no time given): Night One Three Two Six Malaysian Three Seven Zero
Cockpit at 12:46:51: Lumpur Control Malaysian Three Seven Zero
Radar at 12:46:51: Malaysian Three Seven Zero Lumpur radar Good Morning climb flight level two five zero
Cockpit at 12:46:54: Morning level two five zero Malaysian Three Seven Zero
Radar at 12:50:06: Malaysian Three Seven Zero climb flight level three five zero
Cockpit at 12:50:09: Flight level three five zero Malaysian Three Seven Zero
Cockpit at 01:01:14: Malaysian Three Seven Zero maintaining level three five zero
Radar at 01:01:19: Malaysian Three Seven Zero
Cockpit at 01:07:55: Malaysian...Three Seven Zero maintaining level three five zero
Radar at 01:08:00 Malaysian Three Seven Zero
Radar at 01:19:24: Malaysian Three Seven Zero contact Ho Chi Minh 120 decimal 9 Good Night
Cockpit at 01:19:29: Good Night Malaysian Three Seven Zero