Wed Feb 04, 2009 4:28 pm
Wed Feb 04, 2009 5:05 pm
Wed Feb 04, 2009 7:01 pm
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I didn't know Sully the A320 pilot who landed in the Hudson River. I've seen him in the crew room and around the system but never met him. He was former PSA and I was former Piedmont and we never had the occasion to fly together.
The dumb //// press just won't leave this alone. Most airliner ditchings aren't very successful since they take place on the open ocean with wind, rough seas, swells and rescue boats are hours or days away. This one happened in fresh smooth water, landing with the current and the rescue boats were there picking people up while they were still climbing out of the airplane. It also happened on a cold winter day when all the pleasure boats were parked. Had this happened in July it would be pretty hard not to whack a couple of little boats. Sully did a nice job but so would 95% of the other pilots in the industry. You would have done a nice job.
Don't be surprised if the Airbus fly by wire computers didn't put a perfectly good airplane in the water. In a older generation airplane like the 727 or 737 300/400 the throttles are hooked to the fuel controllers on the engine by a steel throttle cable just like a TBM or a Comanche. On the Airbus nothing in the cockpit is real. Everything is electronic. The throttles, rudder and brake pedals and the side stick are hooked to rheostats who talk to a computer who talks to a electric hydraulic servo valve which in turn hopefully moves something.
In a older generation airplane when you hit birds the engines keep screaming or they blow up but they don't both roll back to idle simultaneously like happened to Flt. 1549. All it would take is for bird guts to plug a pressure sensor or knock the pitot probe off or plug it and the computers would roll the engines back to idle thinking they were over boosting because the computers were getting bad data. The Airbus is a real pile of ////, I don't like riding on them. Google Airbus A320 Crash at the Paris Airshow in 1998. Watch the video of an airbus A320 crash into a forest because the computers wouldn't allow a power increase following a low pass. The computers wouldn't allow a power increase because they determined that the airspeed was too low for the increase requested so the computers didn't give them any. Pushing the throttles forward in a Airbus does nothing more than request a power increase from the computer. If the computer doesn't like all the airplane and engine parameters you don't get a power increase. Airbus blamed the dead crew since they couldn't defend themselves. A Boeing would still be flying.
Wed Feb 04, 2009 7:52 pm
bdk wrote:Any comments on this then (sorry, don't know the source and can't comment on the validity):______________________________________________
I didn't know Sully the A320 pilot who landed in the Hudson River. I've seen him in the crew room and around the system but never met him. He was former PSA and I was former Piedmont and we never had the occasion to fly together.
The dumb //// press just won't leave this alone. Most airliner ditchings aren't very successful since they take place on the open ocean with wind, rough seas, swells and rescue boats are hours or days away. This one happened in fresh smooth water, landing with the current and the rescue boats were there picking people up while they were still climbing out of the airplane. It also happened on a cold winter day when all the pleasure boats were parked. Had this happened in July it would be pretty hard not to whack a couple of little boats. Sully did a nice job but so would 95% of the other pilots in the industry. You would have done a nice job.
Don't be surprised if the Airbus fly by wire computers didn't put a perfectly good airplane in the water.
In a older generation airplane like the 727 or 737 300/400 the throttles are hooked to the fuel controllers on the engine by a steel throttle cable just like a TBM or a Comanche.
Airbus blamed the dead crew since they couldn't defend themselves. A Boeing would still be flying.
Wed Feb 04, 2009 9:23 pm
I agree with all the above James. I think one of the more interesting points that the unnamed author makes though is the difference in control laws between Airbus and everyone else. Airbus flies the airplane with the computer and lets the pilot have influences upon the system (at the computer's discretion). Other large transport aircraft manufacturers use computers, but they are designed more to "assist the pilot" and the systems have mechanical backups.JDK wrote:The BIG IMPORTANT outcome from this accident is the general public now 'know' that crash-landings on water can be survivable. No 'death plunge', no 'drops out of sky all die' and a 'pilot hero'. This is all a good thing, and the best news for airlines for a LOOONG time.
Wed Feb 04, 2009 9:25 pm
bdk wrote:I agree with all the above James. I think one of the more interesting points that the unnamed author makes though is the difference in control laws between Airbus and everyone else. Airbus flies the airplane with the computer and lets the pilot have influences upon the system (at the computer's discretion). Other large transport aircraft manufacturers use computers, but they are designed more to "assist the pilot" and the systems have mechanical backups.JDK wrote:The BIG IMPORTANT outcome from this accident is the general public now 'know' that crash-landings on water can be survivable. No 'death plunge', no 'drops out of sky all die' and a 'pilot hero'. This is all a good thing, and the best news for airlines for a LOOONG time.
I'm by no means an expert on this subject, but if anyone knows a pilot that has flown both, I'd be curious to get another opinion.
Wed Feb 04, 2009 9:38 pm
Wed Feb 04, 2009 11:37 pm
Ztex wrote:I do agree with the general feeling expressed in the article. When the computer controls the airplane one can't help a certain feeling of helplessness...Just ask the B-2 crew on Guam...basically an uncommanded pitch up because of water in a sensor? Does not inspire confidence.
Thu Feb 05, 2009 12:46 am
Thu Feb 05, 2009 12:49 am
CAPFlyer wrote:I can't speak from a flying standpoint, but I can tell you that whomever designed ALL of the Airbus fuel systems should be hung, drawn, quartered, and then tared, feathered, and put in the square for everyone to throw rotten fruit on. It is the most awful system and is the primary reason airlines can't "quick turn" any of the aircraft. It's really aggravating to be holding up the departure of a "hot" A32X because they've finished everything else but it takes you 25 minutes to fuel the plane since you can only upload at 150 gallons a minute (compared to 400+ on a 737).
Thu Feb 05, 2009 2:12 am
CAPFlyer wrote:Oh, and since I can't edit a post in here...
Thu Feb 05, 2009 8:38 am
Thu Feb 05, 2009 9:26 am
CAPFlyer wrote:Apparently ZT or Scott has the "User can edit posts" function off for the Off Topic forum.
Thu Feb 05, 2009 10:18 am
Sun Feb 08, 2009 5:01 pm