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A346 Nosewheel Question  
User currently offlineNorthstarBoy From United States of America, joined Jun 2005, 1863 posts, RR: 0
Posted (5 years 11 months 2 weeks 6 days 19 hours ago) and read 4874 times:
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A week or so ago, i went to Germany on LH, estimated departure time was 615pm as our A346 (D-AIHF) was arriving late into Denver from Frankfurt. As departure time got close, and i was milling around the gate area, with no airplane in sight, i see an airport vehicle, lights flashing come up, the driver spoke to a couple of rampers who then jumped in a tug and followed the airport vehicle across the tarmac, then the other shoe came down, as the gate agents announced that the aircraft had landed but was having to be towed from the runway to the gate due to the nosewheel steering failing. We were further informed by the crew, once we boarded at around 9pm, that condensation in the nosewheel had caused the failure, so here's the question, does the A346 not have the standard steering wheel as other aircraft do? or does the fly by wire nature of the plane mean that the nose gear is steered with the sidestick controller? How would condensation affect the nose wheel steering?

Any ideas?


Why are people so against low yields?! If lower yields means more people can travel abroad, i'm all for it
6 replies: All unread, jump to last
 
User currently offlineMusapapaya From United Kingdom, joined Apr 2004, 1097 posts, RR: 0
Reply 1, posted (5 years 11 months 2 weeks 6 days 14 hours ago) and read 4806 times:

It seems like they lost hydralics? I am not entirely sure on the Airbus but I think hydraulic failure can cause this problem.......


Lufthansa Group of Airlines
User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 2, posted (5 years 11 months 2 weeks 6 days 13 hours ago) and read 4754 times:

Sounds like a Hydraulic leak to the steering system.
regds
MEL



Think of the brighter side!
User currently offlineSgtusmc96 From United States of America, joined Apr 2007, 47 posts, RR: 0
Reply 3, posted (5 years 11 months 2 weeks 6 days 13 hours ago) and read 4750 times:

Or a BSCU (brake steering control unit) Went bad.

User currently offlineIFixPlanes From Germany, joined Feb 2005, 239 posts, RR: 0
Reply 4, posted (5 years 11 months 2 weeks 6 days ago) and read 4615 times:



Quoting NorthstarBoy (Thread starter):
... How would condensation affect the nose wheel steering?

Nose wheel steering is controlled by electric via the hand wheel (not the side stick) and the BSCU.
Condensation / moisture and electric can lead to trouble some time  Wink



never tell an engineer he is wrong ;-)
User currently offlineVAAengineer From United States of America, joined Jul 2007, 90 posts, RR: 0
Reply 5, posted (5 years 11 months 1 week 4 days 1 hour ago) and read 4077 times:

On the A346 there are 2 systems that can steer both green and yellow will do it. Sometimes when the pilot steers the aircraft too fast and the GS speed is low the BSCU will cancel his command and deactivate the nose wheel steering, it can be reset with a test but most likely a tow is the fastest way to get the airplane out of the way


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User currently offlinehorstroad From Germany, joined Apr 2010, 277 posts, RR: 0
Reply 6, posted (3 years 5 months 5 days 20 hours ago) and read 2347 times:

the A380 also had quite some trouble with nose gear steering. there are sensors on the NLG reporting the position of the gear, wheather it is on the ground or not etc. moisture can cause these sensors to fail. if the computer doesn´t get its needed data, it resticts the nose gear steering

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