PU707
Topic Author
Posts: 62
Joined: Thu Jan 18, 2001 10:35 am

Static Electricity On Runway

Fri Dec 28, 2001 7:42 am

A few days ago a flight from Montreal to
Toronto (YUL-YYZ) was delayed by 3 hours
due to "static electricity on the runway," as the captain put it. I never heard of this so I was wondering if anyone can share some light...
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avt007
Posts: 1989
Joined: Mon Jul 10, 2000 4:51 am

RE: Static Electricity On Runway

Fri Dec 28, 2001 4:04 pm

Was there a thunderstorm going on at that time?
 
PU707
Topic Author
Posts: 62
Joined: Thu Jan 18, 2001 10:35 am

RE: Static Electricity On Runway

Fri Dec 28, 2001 9:28 pm

No thunderstorms at all, perfectly clear
day.
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OPNLguy
Posts: 11191
Joined: Tue Jun 15, 1999 11:29 am

RE: Static Electricity On Runway

Sat Dec 29, 2001 5:43 am

The only thing that even remotely makes any sense to me is that the aircraft was missing a grounding strap, commonly mounted on one/both main landing gear assemblies. If missing, it's almost certainly a no-go item (never seen it in the MEL/CDL as being deferable), so it sounds as if the delay was awaiting repair/replacement. I can't see that taking 3 hours, unless the parts were elsewhere and had to be sent in fron elsewhere, but that's the best guess I have as to your situation...
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Metwrench
Posts: 715
Joined: Fri Aug 17, 2001 11:25 am

RE: Static Electricity On Runway

Sat Dec 29, 2001 7:27 pm

Never heard of it either. The Flight Crew was undoubtably experiencing some problam. Aircraft can't be grounded to earth like a house, or they couldn't fly. Static dischargers on the trailing edges of flying surfaces take care of the rest.
 
242
Posts: 495
Joined: Tue Oct 24, 2000 1:10 pm

RE: Static Electricity On Runway

Sun Dec 30, 2001 2:25 pm

Most likely a BS excuse for a difficult to explain problem.

For example, no passenger wants to hear that the auto-brakes failed on the last landing, even though they're not a crucial system.
 
PU707
Topic Author
Posts: 62
Joined: Thu Jan 18, 2001 10:35 am

RE: Static Electricity On Runway

Mon Dec 31, 2001 1:50 am

That's the first impression I got!
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air2gxs
Posts: 1443
Joined: Mon Jun 18, 2001 1:29 pm

RE: Static Electricity On Runway

Mon Dec 31, 2001 12:03 pm

Just for the record, grounding straps are not no go except on FADEC type engines.
 
Twotterwrench
Posts: 1087
Joined: Tue Jan 16, 2001 5:57 pm

RE: Static Electricity On Runway

Mon Dec 31, 2001 12:56 pm

Grounding straps on landing gear used to be very common, however, they aren't used nearly as often as they used to be. All it generally consisted of was a strip of a bonding type material (rubberized carbon in some cases) that was attached to the MLG so that as the wheels touched the ground, the bonding strap would provide an earth ground and discharge any static charge the aircraft may have built up in flight. If you didn't do this, the first person who had his feet on the ground and touched something metal on the aircraft would be in for a hell of a surprise. On the CV-580's that i used to work on, it was a no go item, until about 5 years ago when it was decided that airframe bonding and static wicks were enough to take care of any P-static charge the aircraft may have. Hope that helps.

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