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Three Wizz Air A320's lose airspeed data on Feb 26th
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Originally posted by ATLcrew View Posti get the sinking feeling it's all the same airplane.
A Wizz Air Airbus A321-200, registration HA-LXP performing flight W6-4427 from Sofia (Bulgaria) to Tel Aviv (Israel) with 220 people on board, was climbing to FL230 out of Sofia when the crew requested to stop climb at 10,000 feet MSL, accepted a climb to 12,000 feet due to terrain and entered a hold. The crew subsequently declared PAN, PAN, PAN reporting unreliable airspeed. After checking weather conditions around the aircraft climbed to FL200 and diverted to Budapest (Hungary) for a safe landing on runway 31R about 105 minutes after departure from Sofia.
A Wizz Air Airbus A321-200, registration HA-LXD performing flight W6-4351 from Sofia (Bulgaria) to Milan Bergamo (Italy) with 204 passengers, was climbing out of Sofia cleared to climb to FL280 when the crew requested to stop climb at FL180 due to some issue while continuing along their planned flight route. The crew subsequently reported they had unreliable airspeed indications. The crew decided to return to Sofia, declared PAN and descended the aircraft to 11,000 feet, but then decided to divert to Budapest (Hungary), climbed the aircraft to FL200 and landed safely on Budapest's runway 31R about 2 hours after departure.
A Wizz Air Airbus A321-200, registration HA-LXL performing flight W6-4321 from Sofia (Bulgaria) to Beauvais (France), was accelerating for takeoff on Sofia's runway 09 when the crew rejected takeoff at 80 knots reporting unreliable airspeed indications. The aircraft slowed safely and returned to the apron.
Source: avherald.com (same source than Evan's picture)
--- 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 ---
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Maybe Airbus should point a pipe into the wind and then run a tube to a pressure gauge on the upper left instrument panel and put a pressure gauge there? Maybe you could calibrate it to MPH or KPH? Put a heating coil out on the pipe and and a few more tweaks, and Airbus could offer RELIABLE airspeed indications. RAS...sounds like a nifty acronym and marketing feature.Les règles de l'aviation de base découragent de longues périodes de dur tirer vers le haut.
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Originally posted by 3WE View PostMaybe Airbus should point a pipe into the wind and then run a tube to a pressure gauge on the upper left instrument panel and put a pressure gauge there? Maybe you could calibrate it to MPH or KPH? Put a heating coil out on the pipe and and a few more tweaks, and Airbus could offer RELIABLE airspeed indications. RAS...sounds like a nifty acronym and marketing feature.
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Originally posted by ATLcrew View PostHappens to the best of us. "Even to you, Sosa..." (bonus for getting that reference)
--- 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 ---
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Originally posted by Evan View Post...and Boeing. Don't forget Boeing:
http://avherald.com/h?article=4b4f3b2b&opt=0
One of your links says that "the sensor" failed...
Yes, definitely aligns with my smart-aleck-but-slightly-serious suggestion of removing electronical wizardry.Les règles de l'aviation de base découragent de longues périodes de dur tirer vers le haut.
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Originally posted by Nirwanda View PostAs a hobby programmer I could easily create a script that will calculate the time it took to traverse two GPS co-ordinates.
Okay it's not perfect but should be a decent backup to the pitot tube system.
More importantly, I've got to fly on one of this airline's planes someday if for no other reason so that I can say "I just took a Wizz!"Parlour Talker Extraordinaire
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Originally posted by Vnav View PostBecause you're 'instrument' would give us a ground speed.......airplanes don't fly using groundspeed. (besides, I've already got a groundspeed readout)
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Originally posted by Vnav View PostMore importantly, I've got to fly on one of this airline's planes someday if for no other reason so that I can say "I just took a Wizz!"Be alert! America needs more lerts.
Eric Law
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Originally posted by Nirwanda View PostI get that, but as a backup it would surely at least give you a rought estimate what your airspeed is. I'm thinking about how it could have helped Aeroperu etc.
That difference can be quite significant. At high cruise levels the margin for error is not so great. Windshear adds another dimension to it. But it hardly matters, pilots don't need speed data to safely remain in level flight. They just need to not do something else, like climb or descend outside the safe envelope, or cause sudden upsets.
The greatest danger unreliable airspeed poses is the confusion and disorientation it creates. Since autoflight systems cannot operate without airspeed data, pilots have to suddenly fly by hand with no time to mentally prepare, not so dangerous in itself but dangerous when your mind is confused and your judgment flawed.
The only reliable solution to this problem is in training pilots to follow procedures designed to protect them (and you) during those moments between a sudden event and a fully regained situational awareness.
Some pilots think they are above all that.
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Originally posted by Nirwanda View PostI get that, but as a backup it would surely at least give you a rought estimate what your airspeed is. I'm thinking about how it could have helped Aeroperu etc.
--- 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 ---
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Hey, Nirvana:
What if you programmed your GPS to track actual speed vs distance on a takeoff roll and compared that to the needed speed versus diastance for pilots to check that they aren’t going to come up short and take out a fence, or something?
It could even give warnings if things looked bad.Les règles de l'aviation de base découragent de longues périodes de dur tirer vers le haut.
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