Flight Crew Last 90 Days 228; Flight Crew Type 6200
Other / Unknown
Aircraft Equipment Problem Critical
Flight Crew Overcame Equipment Problem; General Declared Emergency; General Maintenance Action
Aircraft
While flying at FL410; we got a left Bleed Trip indication. Not long after; the Altitude Warning horn sounded due to a loss of pressurization from a right Bleed Trip. I was the Pilot Flying. We completed the necessary checklists and regained pressurization during the descent. After coordinating with Dispatch; we continued to destination and turned the aircraft over to Maintenance. As known from previous events I have read about; communication was a challenge at first due to wearing masks. The Flight Attendants were curious at first since we were descending steeper and unexpectedly; but we quickly explained to them about our situation. This report is written to present an abnormal situation we have seen more of lately that presents challenges in communication between pilots. The crew worked well together and the passengers were kept informed. I believe this scenario has been run in training and should be continued since it is odd to communicate with the masks on. 'Chair flying' the steps help to make it more familiar in the event of a loss of pressurization and use of masks.
At FL410; the number one engine bleed tripped off. Pressurization remained stable and checklist procedures were accomplished. About 10 to 15 minutes later; the number two engine bleed air tripped. The Cabin Altitude Warning horn sounded and cabin pressure started to climb. We put our oxygen masks on; declared an emergency with Center and started an emergency descent. During the descent; we were able to regain pressurization. The flight attendants said the passengers were fine and not aware there was a pressurization problem. We coordinated with Center and Dispatch and continued onto our destination.
B737-700 flight crew experiences a bleed trip at FL410 that cannot be reset. Ten minutes later the second bleed trips and the cabin altitude warning sounds. An emergency is declared and descent initiated; with a successful reset during the descent allowing the flight to continue to destination.