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| 2005/8/17-20 [Transportation/Airplane] UID:39148 Activity:nil |
8/17 Why is it that when a plane depressurizes by accident, it becomes hard
to control and it loses altitude? Is it real or is it just a Hollywood
thing?
\_ http://en.wikipedia.org/wiki/Cabin_pressurization
sounds like the biggest issue would by hypoxia of the pilots.
\_ Thanks. I guess it's just a Hollywood thing then.
\_ cuz it's fricken cold
\_ i think it's okay for pilots to drink alcohol so they
can keep warm if this happens..
\_ Wasn't there a passenger airplane in the late 80s that was flying
over Hawaiian islands and suddenly started falling apart in
mid-flight? They landed fine and I think there were few or no
casualties then.
\_ You mean the Aloha flight 243.
http://www.planecrashinfo.com/cvr880428.htm -ax
\_ http://www.planecrashinfo.com/w880428.htm
pictures or the plane after landing.
\_ Yow! I am so keeping my seatbelt buckled.
\_ What's surprising is how come the airplane didn't fall
apart in mid-air and how come no one froze to death?
\_ Must be because the crew took the plane down to ~ 12,000
feet as soon as possible. |
| 7/11 |
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| en.wikipedia.org/wiki/Cabin_pressurization As the operational altitude increases, reactions become sluggish a nd unconsciousness will eventually result. Sustained flight operations above 10,000 feet generally require supplemen tal oxygen (through a canula or mask) or pressurisation. These systems maintain air pressure equivalent to 8000 ft or less, even during flight at altitudes above 43,000 ft. As the airplane pressurizes and decompresses, some passengers will experi ence discomfort as trapped gasses within their bodies respond to the cha nging cabin pressure. Note that in a pressurized aircraft, these effects are not due di rectly to climb and descent, but to changes in the pressure maintained i nside the aircraft. It is always an emergency if a pressurised aircraft suffers a pressurisat ion failure above 10,000 feet. A hole only five feet across will depressurize a jetliner in a fraction of a second. Rapid decompression of commercial aircraft is extremely rare, but dangero us. People directly next to a hole may be sucked out or injured by flyin g debris. Tooth - Anyone with intestinal gas or gas trapped in an infected tooth may also experience Barodontalgia, a toothache provoked by exposure to changing atmospheric pressure. |
| www.planecrashinfo.com/cvr880428.htm April 28, 1988 Pacific Ocean Aloha, Flight 243 Boeing B-737-297 N73711 The aircraft suffered separation of the top of the fuselage resulting in explosive decompression and severe structural damage. A flight attendant was sucked out of the opening in the fuselage and her body never recove red. Failure of Aloha Airlines' maintenance pro gram to detect the presence of disbonding and fatigue damage which led t o failure of the lap joint at S-10L and the separation of the fuselage u pper lobe. Contributing factors were the failure of Aloha Airlines manag ement to properly supervise its maintenance crew as well as the failure of the FAA to properly evaluate the Aloha Airlines maintenance program a nd to assess the airline's inspection and quality control deficiencies. The CVR microphones in the cockpit could not pick up any crew conversatio n for the next five minutes. However, the CVR recorded the crews transmi ssions with the ground control through the crews oxygen mask microphones . Co-pilot: Maui tower, Aloha two forty three, were inbound for landing. We re just, ah, west of Makena, descending out of thirteen, and we have rap id depr - we are unpressurised. Declaring an emergency Tower: Aloha two forty three, winds zero four zero at one five. Here the crew, having reached 11,000 feet takes off its oxygen masks. Tower: Two forty - two the equipment is on the the roll. Weve picked up some of your airplane business right there. Ah, tell him, ah, w ell need assistance to evacuate this airplane. Captain: We really cant communicate with the flight attendants, but well need trucks, and well need, ah, airstairs from Alhoa. Tower: Alhoa two forty three, I hear you loud and clear. Ah, well need assistance for the passengers when we l and. Tower: Okay, I understand youre gonna need an ambulance. Tower: Alhoa two forty three, can you give me your souls on board and you r fuel on board? Captain to co-pilot: Do you have a passenger count for tower? Co-pilot to Tower: We, ah - eighty five, eight six, plus five crew member s Tower: Okay. We cannot communicate with our flight attendan t Tower: Okay. |
| www.planecrashinfo.com/w880428.htm An Aloha Airlines Boeing 737 landed safely after fatigue cracking caused the top portion of the fuselage to peel away. Everyone survived except for a flight attendant who was sucked out of the plane and lost at sea . |