Airman99o From Canada, joined Aug 1999, 969 posts, RR: 2 Posted (4 years 5 months 3 weeks 1 day 5 hours ago) and read 4896 times:
Taken From CP.24 Website.
A plane that left Grenada for Toronto on Tuesday afternoon is sitting on the ground in the Dominican Republic after an incident onboard prompted the crew to cut the flight short.
Shortly after a planned stop in Barbados to pick up more passengers, a reportedly claustrophobic passenger on Skyservice Airlines flight 828 attempted to open the plane door.
The passenger was restrained by other passengers and members of the crew. No weapons were used and no one was injured.
The crew was forced to land the plane in Punta Cana, Dominican Republic, where the agitated passenger was taken into custody by the local authorities.
The rest of the passengers -- mainly tourists who had purchased Caribbean vacation packages -- are spending the night in Punta Cana.
They are expected to arrive in Toronto on Wednesday afternoon, says a Skyservice representative, adding the flight was delayed overnight in order to bring in a fresh flight crew.
Skyservice is a Canada-based charter airline that flies to destinations in the United States, the Caribbean, Mexico and Europe.
Aloha717200 From United States of America, joined Aug 2003, 4398 posts, RR: 17 Reply 1, posted (4 years 5 months 2 weeks 6 days 19 hours ago) and read 4154 times:
Seems like this sort of thing is happening more frequently these days.
Glom From United Kingdom, joined Apr 2005, 2803 posts, RR: 10 Reply 3, posted (4 years 5 months 2 weeks 6 days 18 hours ago) and read 4033 times:
Quoting NQYGuy (Reply 2): And it always seems like these people are failing to succeed frequently these days too!
That's because doors can't be opened at altitude without the help of a hydraulic jack. The pressure in the cabin seals them.
I suppose the reason this type of stuff is becoming more common is that air travel is becoming more common meaning more flakey neurotic types who will freak out on board.
NWADC9 From United States of America, joined May 2004, 4862 posts, RR: 10 Reply 4, posted (4 years 5 months 2 weeks 6 days 16 hours ago) and read 3868 times:
Why stop 'em? They can't open the door. Instead, we can just laugh at them at their sorry attempt and watch them sweat and put in all their effort into the impossible
Flying an aeroplane with only a single propeller to keep you in the air. Can you imagine that? -Capt. Picard
Ag92 From India, joined Jul 2006, 1317 posts, RR: 0 Reply 5, posted (4 years 5 months 2 weeks 6 days 16 hours ago) and read 3845 times:
Quoting NWADC9 (Reply 4): Why stop 'em? They can't open the door. Instead, we can just laugh at them at their sorry attempt and watch them sweat and put in all their effort into the impossible
That's true actually but many don't know that so if you don't help to restrain the passenger, they could arrest your for helping the guy open the door
Flashmeister From United States of America, joined Apr 2000, 2864 posts, RR: 7 Reply 6, posted (4 years 5 months 2 weeks 5 days 12 hours ago) and read 3377 times:
Well, they could open the door during climb before the pressure differential is at its highest, couldn't they? Particularly on power-assisted doors?
Quoting Ag92 (Reply 5): That's true actually but many don't know that so if you don't help to restrain the passenger, they could arrest your for helping the guy open the door
This is an interesting claim... using the same logic, though, if I don't tackle a guy with a gun robbing a convenience store that I'm in, then I'm guilty of helping him too? That could be a tough claim to make in court.
Glom From United Kingdom, joined Apr 2005, 2803 posts, RR: 10 Reply 7, posted (4 years 5 months 2 weeks 4 days 20 hours ago) and read 3027 times:
Quoting Flashmeister (Reply 6): Well, they could open the door during climb before the pressure differential is at its highest, couldn't they?
Well the easiest way to settle this is... QUACKULATION!
How much force do we believe the average punter could apply to the door? Let's be very generous and suggest they could bench press 150kg, aka 1.5kN. Let's then also assume an airplane door has a size of 2m³?
Okay then, so the differential pressure of the air must exert a force of no less than 1.5kN, which means that the door 750Pa to keep it secure. Even at first glance, this is already looking like a lost battle for the distressed passenger.
The pressure gradient of the atmosphere is 4Pa/ft. So the difference between cabin altitude and pressure altitude must be no less than around 200ft in order to generate sufficient pressure to keep the door closed.
The big question is, how the cabin altitude is varied with pressure altitude. If it's a case of equalisation up to cruise cabin altitude, then that means in the early stages of the climb, there is a clear threat*. If the cabin altitude is gently increased above pressure altitude from the beginning, then the window of opportunity I would saw is minimal.
*One factor I haven't included is the effect of dynamic pressure. As dynamic pressure increases with speed, static pressure drops. This means that the static pressure on the door from the outside would actually be lower than static pressure from the inside when airbourne even without cabin pressurisation. This can only work against the distressed passenger.
MrSkyGuy From United States of America, joined Aug 2008, 1210 posts, RR: 3 Reply 8, posted (4 years 5 months 2 weeks 4 days 14 hours ago) and read 2803 times:
Welcome to my RR list, Glom. Very informative post.
"The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
Ag92 From India, joined Jul 2006, 1317 posts, RR: 0 Reply 9, posted (4 years 5 months 2 weeks 4 days 13 hours ago) and read 2723 times:
Quoting Flashmeister (Reply 6): This is an interesting claim... using the same logic, though, if I don't tackle a guy with a gun robbing a convenience store that I'm in, then I'm guilty of helping him too? That could be a tough claim to make in court.
Sorry I just got that idea from watching United 93, where in the movie they showed that the crew only thought there were three hijackers but in the movie there were four cause the fourth one was actually sitting down waiting for the events to unfold
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