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United Airlines emergency landing: Live updates as passenger plane returns to Heathro
Hmmm...interesting. The 767-400 is the only 767 variant that definitely has a dump facility. Early versions of the -200 and -300 did not have dump capability production fitted but it could be ordered as an extra feature or retro-fitted.
I took a look at PPrune where the professionals hang out and it seems that although the -400 has a dump system it cannot dump to below max landing weight so a degree of burn off has to take place.
The flight concerned here was probably no more than 10 to 15 minutes into it's journey and still fairly low so it would not have been far off its max weight.
If it 'ain't broken........ Don't try to mend it !
Good question. It squawked 7700 and flew an extended holding pattern at around 12,000 feet for a few hours due to a "maintenance problem" and then landed safely back at Heathrow. I'll put a tentative guess on pressurisation problems.
If it 'ain't broken........ Don't try to mend it !
I'll put a tentative guess on pressurisation problems.
We have a winner!!!
A United Boeing 767-400, registration N59053 performing flight UA-28 from London Heathrow,EN (UK) to Newark,NJ (USA) with 227 passengers and 13 crew, was climbing out of London Heathrow when the crew stopped the climb at FL100 due to the cabin not pressurizing. The aircraft entered a hold to troubleshoot, then burn off and dump fuel before returning to Heathrow for a safe landing on runway 27L about 4:45 hours after departure.
Aviation Herald - News, Incidents and Accidents in Aviation
Edit: 4:45 hours to burn fuel even after dump? Where they burning fuel at max endurance speed or what?
--- Judge what is said by the merits of what is said, not by the credentials of who said it. ---
--- Defend what you say with arguments, not by imposing your credentials ---
Ho Hum ! Not bad for an 18hr Piper Cherokee driver
The biggest clue was the fact that they stopped their climb at circa 10,000 feet instead of continuing the flight to Newark. I would imagine that, other than engine failure or airframe damage, they would have continued the flight ?
If it 'ain't broken........ Don't try to mend it !
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