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Noise After Push Back  
User currently offlineLamyl_HHLCO From United States of America, joined Aug 2000, 621 posts, RR: 2
Posted (10 years 10 months 3 days 2 hours ago) and read 2632 times:

What is this weird lousy noise that we hear after a push back?

13 replies: All unread, jump to last
 
User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 1, posted (10 years 10 months 2 days 13 hours ago) and read 2486 times:

Well, that's specific.

Can be engine start.

Can be power transfer.

Can be the tow bar being disconnected.

Can be the flaps being extended.

Can be the flight controls being tested.



User currently offlineSlamclick From United States of America, joined Nov 2003, 10062 posts, RR: 68
Reply 2, posted (10 years 10 months 2 days 11 hours ago) and read 2455 times:

Would help you get an answer if you told us what kind of airplane.
Barking dogs on an A-320 possibly?



Happiness is not seeing another trite Ste. Maarten photo all week long.
User currently offline757lgw From United Kingdom, joined Dec 2003, 152 posts, RR: 2
Reply 3, posted (10 years 10 months 2 days 8 hours ago) and read 2405 times:

while were on the topic whats the grinding noise after pushback on the A32s. Is that what your on about lamy?.

User currently offlineOkie From United States of America, joined Jul 2003, 3115 posts, RR: 3
Reply 4, posted (10 years 10 months 2 days 6 hours ago) and read 2386 times:

Probably moaning "after push back" emitting from the loo if it was a 57.
Sorry could not resist after reading the post on the Civial Aviation side.

Lots of noises to be heard before during and after pushback depending on aircraft and starting procedures at that particular airport and particular operator. We need more clues
Aux Hydraulic Pumps
Air Starter
Wing devices


User currently offlineLamyl_HHLCO From United States of America, joined Aug 2000, 621 posts, RR: 2
Reply 5, posted (10 years 10 months 1 day 23 hours ago) and read 2304 times:

yeah specifically on a A320...right after push back there is a loud noise like when you screw something with a machine, it's abviously not the Flaps or any mecanical noise that i easy recognize... I never heared this noise on a 737 though just the A320.

User currently offlineTsufang@ci From Taiwan, joined Feb 2002, 39 posts, RR: 0
Reply 6, posted (10 years 10 months 1 day 21 hours ago) and read 2287 times:

to slamclick
Would help you get an answer if you told us what kind of airplane.
Barking dogs on an A-320 possibly?

xxxxxxxxxx
that's strange sound comes from ptu when elec hyd pump on
every time when i towing with aircraft ,and i turn on the elec pump
the dog barking comes from the floor


User currently offlineL-188 From United States of America, joined Jul 1999, 29805 posts, RR: 58
Reply 7, posted (10 years 10 months 1 day 21 hours ago) and read 2278 times:

The sound of the tug jackknifing into the side of the airplane  Acting devilish


OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineLamyl_HHLCO From United States of America, joined Aug 2000, 621 posts, RR: 2
Reply 8, posted (10 years 10 months 1 day 19 hours ago) and read 2264 times:

na i don't think it's the dog barking sound..it's something else ,right after PB and engines starting up then the guys on the ground do something or disconnecting something and it makes like an electric screwdriver noise but very loud...mmm wonder what it is??

User currently offlineL-188 From United States of America, joined Jul 1999, 29805 posts, RR: 58
Reply 9, posted (10 years 10 months 1 day 19 hours ago) and read 2261 times:

Turning the nosegear steering back on?

Some aircraft have a NLG pin.
Some have a pump for it that is operated from the cockpit.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineHAWK21M From India, joined Jan 2001, 31692 posts, RR: 56
Reply 10, posted (10 years 10 months 1 day 19 hours ago) and read 2257 times:

Probably The Flap drive pump/motor,used to extend the LEDs.At times the Flaps & Slats are extended to position 1 after engine start up for Visual confirmation that they are extended from Ground staff, prior to Taxi out.[In addition to the Indication lts].
regds
regds
HAWK



Think of the brighter side!
User currently onlineMD11Engineer From Azerbaijan, joined Oct 2003, 14089 posts, RR: 62
Reply 11, posted (10 years 10 months 1 day 11 hours ago) and read 2203 times:

On a 737 the standby pump makesa loud rasping noise.

Jan


User currently offlineSabenaboy From Belgium, joined Feb 2001, 187 posts, RR: 2
Reply 12, posted (10 years 10 months 1 day 6 hours ago) and read 2158 times:

Check this out
http://www.airliners.net/discussions/tech_ops/read.main/47080/6/


User currently offlineLamyl_HHLCO From United States of America, joined Aug 2000, 621 posts, RR: 2
Reply 13, posted (10 years 10 months 1 day ago) and read 2136 times:

That must be it ,the PTU

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