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Asiana 777 (AAR214) Crashes at SFO - Two Fatalities, Dozens InjuredAsiana Flight 214, a Boeing 777-200ER, from Seoul to San Francisco crashed during landing at San Francisco International Airport (KSFO). The flight from Seoul was 10 hours and 23 minutes and seats 295 passengers. (flightaware.com) More...
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Looks like the plane landed short and hit the breakwater wall at the start of the runway.
Wondering whether the short landing could have resulted from a stall or just simply a pilot coming in too low. Would love to hear convo between the cockpit and ATC.
The ATC recording is out and it was a routine "cleared to land" call. In fact someone else called the emergency so when 214 called back after the crash the controller advised emergency vehicles were on the way.
KSFO VGSI Angle is 2.85 degrees. B777 approach recommended speed is 160 KIAS. That requires descend rate 806 feet per minute. AAR214 entered glideslope at 4500 feet at 3 degree angle and at 3700 feet had an angle of 3.54 degrees. Descent (sink) rate of more than 1000 feet per second in not considered a stabilised approach: http://www.737ng.co.uk/B777%20FCTM%20Flight%20Crew%20Training%20Manual.pdf Should the pilot have declared missed approach at 3700 feet altitude?
You sure you don't mean mph. Here is the link to Boeing's chart on approach speed. Naturally some like it hotter.lol
Sorry bout that http://www.boeing.com/assets/pdf/commercial/airports/faqs/arcandapproachspeeds.pdf
Thanks, Preacher. According to the Boeing chart 777-200 approach speed is 136 to 140 knots depending on the configuration. That translates to 686-706 feet per minute recommended sink rate at KSFO. AAR214 was dropping at almost twice the recommended rate. At the outer marker (4.5 miles from the threshold) he should have been at 1180 feet altitude but he was at 2200! If you are at twice the altitude at 100 seconds before touchdown would'n you declare missed approach rather than sink at a reckless rate?
One of the eyewitnesses who regularily observes landing traffic there remarked she could see the plane was too high and watched as it suddenly slowed then nosed way up. The PAPI lights would have been 3 RED which would tell them they were too low.
I think I would but the NTSB conference is on so hopefully it will end the speculation.
okay guys it gets even more bad when you look at the right tables not 200 series and at the 300 er charts the numbers even get worse thanks Pawel for the link been awhile since i flew heavys and never supers 57-67 series also had higher over the fence speeds hell even a lear has higher speeds then these guys had not a good day in the cockpit really really hope there was something out of the ordinary :(