SFO plane crash

StrizzyChris

StrizzyChris

New member
A 747 plane from Korea just crashed while landing at SFO. It caught fire, the tail broke off, and looks pretty bad :grayno:
 
Maybe they were having trouble in the air? Did they just say that it landed at a different runway than it was supposed to?
 
Friends at San Francisco hospital said they have over 8 patients there that range from children to 50yo and all of those are in critical condition. Don't know about other area hospitals yet. They have others that are minor injuries. Many others have been triaged and sent as far as to Alameda county. Disaster situations we always spread the people out to surrounding hospitals to not overwhelm a single facility. So not sure what the final death count will be.
 
StrizzyChris said:
Friends at San Francisco hospital said they have over 8 patients there that range from children to 50yo and all of those are in critical condition. Don't know about other area hospitals yet. They have others that are minor injuries. Many others have been triaged and sent as far as to Alameda county. Disaster situations we always spread the people out to surrounding hospitals to not overwhelm a single facility. So not sure what the final death count will be.
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Sounds like an MCI for sure. Not good. Thoughts and prayers to all involved.
 
The problem with trying to figure out what happen is the determining what the weather conditions are. In the SF area wind direction changes. Fox News was interviewing a pilot who stated if the wind shifted from a head wind to a tail wind they would loose lift. Loosing lift will create havoc no matter where you are on approach.
Most were able to evacuate the plane prior to the fire engulfing the cabin area.
This could have been a lot worse.
 
cpowill said:
The problem with trying to figure out what happen is the determining what the weather conditions are. In the SF area wind direction changes. Fox News was interviewing a pilot who stated if the wind shifted from a head wind to a tail wind they would loose lift. Loosing lift will create havoc no matter where you are on approach.
Most were able to evacuate the plane prior to the fire engulfing the cabin area.
This could have been a lot worse.
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Tailwind has no effect on lift. But, it does increase the ground speed thus increases landing roll.
Looks like the pilot was low on the approach and landed short. Engine bird strike? Engine problems? Fuel issues? Smoke in the cockpit? Who knows... All I know it was horrible :(




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PilotJK said:
Tailwind has no effect on lift. But, it does increase the ground speed thus increases landing roll.
Looks like the pilot was low on the approach and landed short. Engine bird strike? Engine problems? Fuel issues? Smoke in the cockpit? Who knows... All I know it was horrible :(




Sent from my iPhone using WAYALIFE mobile app
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You're right pilotjk but to extend on that a tailwind can and will effect lift, airfoils/wings don't create lift if air flows over them backwards. But it would have to be a substantial amount to be uncontrollable (as in wind shear). In case of a sudden increase of the tailwind, the aircraft airspeed decreases instantaneously. The lift decreases and the aircraft tends to fly below the intended approach path. Tailwind will cause the approach speed to increase if its constant needing a reduction in power. Looks like whatever the "cause" was made them hit hard and collapsed the landing gear, causing the tail to depart the airframe whether it impacted the ground or the force of the landing broke it off. But by all means not saying wind was a factor here. It will be interesting to see what the NTSB comes up with.
 
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^^^^ Not to be confused with a tailwind at alt where there a/c is simply traveling with the airflow such as a boat traveling with current.

God bless those involved and their families, lets be thankful this didn't turn out worse.
 
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JeepinLife said:
Tailwind will cause the approach speed to increase if its constant needing a reduction in power.
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Very true, like you mentioned such as a micro-burst or severe thunderstorms. But, in the case at SFO it was clear & 10 with no convective activity.
Just a wind shift or shear wouldn't produce such a drastic change to indicated airspeed causing a stall. Unless, the crew were flying extremely below Vref (such as -20). A tailwind will not cause the approach speed to increase and a constant need to reduce power. A shift from a headwind to a tailwind would cause a decrease in indicated airspeed and a need for extra power. During gusty conditions its common to encounter low level wind shear of +/- 10 knots which can be easily corrected.

Sounds like they were high on the approach with a steep descent rate. I wouldn't be surprised if fatigue played a role. All in all, the FDR will have the answers.
 
PilotJK said:
Very true, like you mentioned such as a micro-burst or severe thunderstorms. But, in the case at SFO it was clear & 10 with no convective activity.
Just a wind shift or shear wouldn't produce such a drastic change to indicated airspeed causing a stall. Unless, the crew were flying extremely below Vref (such as -20). A tailwind will not cause the approach speed to increase and a constant need to reduce power. A shift from a headwind to a tailwind would cause a decrease in indicated airspeed and a need for extra power. During gusty conditions its common to encounter low level wind shear of +/- 10 knots which can be easily corrected.

Sounds like they were high on the approach with a steep descent rate. I wouldn't be surprised if fatigue played a role. All in all, the FDR will have the answers.
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Exactly. They must have had something else on their plate or human factors played a big role here. Blue is up brown is down :)
 
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