Flybynight From Norway, joined Jul 2003, 1004 posts, RR: 2
Reply 2, posted (8 years 7 months 1 day 2 hours ago) and read 22473 times:
I'll tell you, that is damn scary feeling inside the plane. Usually very loud and bright plus the lights will usually go out. It happened to me twice. Last time in Kansas City.
There were some seriously scared people on that plane.
Andz From South Africa, joined Feb 2004, 8407 posts, RR: 11
Reply 6, posted (8 years 7 months 1 day 1 hour ago) and read 22304 times:
I was on board an SAA 742 that was struck by lightning just after takeoff from FRA, there was a bang and an enormous flash inside the cabin, some people screamed and the captain was on the PA immediately to say what had happened. The rest of the flight to JNB was uneventful.
After Monday and Tuesday even the calendar says WTF...
It is safe to continue flying. I could of course be wrong, but I don't think a plane has crashed because of a lightning strike. I believe sometimes it can damage electrical instruments because of momentary electrical spikes.
It more scares the crap out of than anything.
If you've ever been within a few feet of lightning strike you know what I mean!
Dougloid From , joined Dec 1969, posts, RR:
Reply 9, posted (8 years 7 months 1 day ago) and read 22164 times:
Quoting DFORCE1 (Reply 7): How is a plane affected when it gets struck by lightning? Are they still safe to fly? I take it that they are built to be able to withstand lightning strikes.
I have worked on a couple of them. One was Merlin III that took a hit on one prop and it knocked a chunk out of the prop blade that pitted the starboard windshield. The current from the strike went through the engine burning roller bearings as it went, out the tail cone, thru the structure and out the tail of the aircraft where there's a static discharger in the tail area. The structural guys had to track the path of the strike and repair all evidence of arcing.
It required a complete engine teardown and demagnetizing of every ferrous part in it-which meant toting everything and passing it thru the demagnetizing coil on the shop magnaflux machine until it wouldn't disrupt the degaussing meter that the magnaflux people provide.
Of course the engine mount was magnetized as well and that required having a guy who ran a magnaflux service come out and wrap his degaussing coil around the mount and hit it until it was completely demagnetized.
All of which was very fascinating because there were no written procedures for any of this in the Garrett or Swearingen manuals...
It didn't seem to hurt the avionics but all of that had to be replaced within a couple more years anyway and I'm told this is a typical result.
Crogalski From United States of America, joined May 2005, 514 posts, RR: 3
Reply 10, posted (8 years 7 months 16 hours ago) and read 20862 times:
I remember when I was in the Aircradt Explorers at PIE back in 2001, and the group leader told me that an ATA 757 that just came in, was struck 7 times by lightning, and they were still doing the turn on it. but they didnt tell the pax
A319 A320 B717 B727 B737 B747 B757 B767 C152 C172 DC9 E145 E190 MD88 PA28 | B6 CO DL FL NK NW LO TW
AsstChiefMark From , joined Dec 1969, posts, RR:
Reply 14, posted (8 years 7 months 14 hours ago) and read 19171 times:
The first flash is the stepped leader and ground streamer completing the connection. The second flash is the return stroke from the ground. The airplane just happens to be in the middle of the circuit.
The base of the cloud is negatively charged and the ground is usually positively charged. Occasionally, the ground streamer is negatively charged. If a positive stepped leader originating from the cloud top makes connection with a negative ground streamer, the lightning bolt is up to ten times more powerful. The flash also lasts much longer.
Not exactly ... there are two parts to lightning - a stepped leader and a streamer (if I remember correctly). The stepped leader comes down from negatively charged particles comes down from the cloud whilst the streamer, made up of positively charged particles, comes up from the ground. They meet and a so-called channel is made - then current from the ground surges upwards through the channel.
If you look at the plane being struck, you can see both parts of the lightning, one coming from below and one coming from above.
MissedApproach From Canada, joined Oct 2004, 713 posts, RR: 2
Reply 18, posted (8 years 7 months 11 hours ago) and read 17428 times:
Quoting DFORCE1 (Reply 7): How is a plane affected when it gets struck by lightning?
Don't forget that electricity will follow the path of least resistance, which is why it would prefer to travel through the plane in the first place. That being said, the discharge should travel primarily though the frames & stringers, & the skin to a lesser degree, since these are large metallic components & can carry a lot of current. There is some risk of damage to electronic components, but IMO that would be a fairly low probability.
That's some incredible footage, by the way.
DeltaGuy767 From United States of America, joined Jun 2005, 636 posts, RR: 2
Reply 20, posted (8 years 7 months 11 hours ago) and read 16939 times:
I flew a DL 727 from ATL-BDL a few years back during the summer. We avoided the servere T-Storms that were in ATL on the climb, but when we began the decent into BDL, ATC vectored us right into a squall. I was sitting over the wing in an A seat and I suddenly saw a brilliant flash of light strike the wing. The lights in the cabin all went out and a faint burning smell spread throughout the cabin. Apparently the strike traveled through the wing and back to the tail where it knicked the #3 engine and from what I saw at BDL, there was a giant burn on the cowling and on the middle of the wing surface. Anyway we landed safely in BDL and the A/C was immediately towed away from the terminal, to where I don't recall.
Crash65 From United States of America, joined Dec 2003, 74 posts, RR: 2
Reply 21, posted (8 years 7 months 11 hours ago) and read 16922 times:
When I was a Flight Engineer on the 727 we took a lightning hit on the radome that exited the aircraft from the lower fuselage in the tail. Just before the strike there was a very dramatic discharge from the static wicks that line the radome, it looked like a spider web of electricity spreading 30 feet in front of the aircraft in every direction. The discharge was silent but then the lightning hit with a very loud PFOOOOOOOOOOHHHHHM sound. The flight attendants in the jumpseat at the aft entry door (the one that opens into the tail cone ala DB Cooper) said they felt something right below their feet hit the aircraft (that was the lightning exiting). I immediately sat as far back as I could and checked the engineer's panel for anything out of the ordinary but the old girl didn't miss a beat. Not a single amber light came on and not a single circuit breaker popped, the lights didn't even flicker. The old warhorse just chugged along like it was nothing and the postflight revealed no evidence of the event. I really miss that airplane.
Aircraft have been designed for a long time to be able to handle lightning strikes. Every control surface and aircraft structure has static wicks that help dissipate the buildup of charges on the aircraft, and also dissipate the surge of electricity when the aircraft does get hit by lightning. I also recall many years ago that an aircraft in the piston propeller airliner era was hit by lightning over the Yardley VOR and it went down in flames, but I really don't recall the details.
Liedetectors From United States of America, joined Jul 2005, 360 posts, RR: 0
Reply 22, posted (8 years 7 months 9 hours ago) and read 16176 times:
do many aircraft go down as a result of the lighting strikes? i recall hearing one time that a corporate jet was downed due to a lightning strike. It was a shame because all the pax were high ranking officers in the company. since then no corporation will send a large number of officers on the same plane togther.
EADC8 From United States of America, joined Mar 2005, 140 posts, RR: 0
Reply 23, posted (8 years 7 months 9 hours ago) and read 16153 times:
Quoting Flybynight (Reply 8): It is safe to continue flying. I could of course be wrong, but I don't think a plane has crashed because of a lightning strike
I don't think that's entirely true. During the TWA 800 investigation, I could swear I remember hearing that there was an Iranian Air Force 747 that was brought down by a lightning strike in 1976, which in turn had caused a fuel tank explosion on one of it's wings. Can anyone confirm this?
Jepstein From United States of America, joined Jun 2005, 76 posts, RR: 0
Reply 24, posted (8 years 7 months 6 hours ago) and read 14399 times:
I was aboard an LX A332 bound for Boston and as we were taking off we were struck by lightning. We were worried at first that the left (I think) engine had flamed out. But the pilot came on the PA a few minutes later and told us what had happened. I as sitting right behind the engine, it was pretty scary.
: I'm glad that lightening strike had never occoured to me last time I flew to the UK. Eeeek. Looks downright scary Wow thanks for the footage
: I was flying from PHL-ORD back in February when our MD-80 got hit on the wing by a lightning strike...I was sitting in the window seat in the emergen
: I can't, but I have a distinct recollection of a Pan Am 707 that was hit and exploded or broke up b/c of lighting strike, late 50s or early 60s - any
: Check out the FAA website at the following link they have a pretty good collection if incident reports you can see exactly what a lightning strike can
: I just watched a Discovery show in regards to the NASA Columbia shuttle disaster the other night and some scientists have recently discovered lightni
: The Pan Am 707-121B was hit near Baltimore in 1963, and crashed killing all aboard.
: Yeah, if only they had been lowly peons. Then everything would have been cool.
: False, and not funny. I was simpily commenting on it because it is hard to replace higher level employees of a company, especially a lot all at once.
: MILESRICH....And the fuel at that time was JP-4 a mixture of gasoline and Jet Kero.....That went by the wayside for the commercial planes after the Ma