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Topic: Aircraft Bolt Falls From The Sky
Username: Plainplane
Posted 2010-03-26 07:38:41 and read 13081 times.

A bolt from a flying airplane fell off over Central Florida and hit smack-dab into the sunroof of a parked SUV. The FAA is now investigating.

Here is a link to the story (with pictures):
http://www.wftv.com/news/22962964/detail.html

Topic: RE: Aircraft Bolt Falls From The Sky
Username: N6238P
Posted 2010-03-26 07:55:43 and read 12972 times.

This reminds me of the lucky DC-10 bolt that hit the girl in the head in Drop Dead Gorgeous.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: richierich
Posted 2010-03-26 08:36:41 and read 12820 times.

Certainly coming from an aircraft is a possible option, the only other viable option I can think of would be if the bolt was fired from some sort of homemade gun or sling shot.

The latter may seem highly unlikely but - true story - many years ago in my parents van when driving through a tough part of town we heard this extremely loud bang on the side of the vehicle. When my father got out to investigate, he said there was a small but deep dent on the side of the fender and sure enough you could see where a small metallic object had hit the car at high speed. A closer inspection revealed what appeared to be the thread of a good sized bolt (we never did find the item and were not going to spend a lot of time looking for it). My father reckoned some local thug kid may have been picking off traffic with his new sling shot or crossbow and a bolt would be perfect for such a weapon. Obviously this is not a good idea and it crossed my mind what could have happened if it hit the window and not the fender of our van. Not once did we suspect an airplane part though...

Based on where this guy's truck was parked and the fact the bolt has been recovered, it seems more likely it did come from an aircraft. What are the chances this bolt (it is serialized?) can be traced back to a specific aircraft?

Topic: RE: Aircraft Bolt Falls From The Sky
Username: TSS
Posted 2010-03-26 09:21:50 and read 12531 times.

Quoting richierich (Reply 2):
Based on where this guy's truck was parked and the fact the bolt has been recovered, it seems more likely it did come from an aircraft. What are the chances this bolt (it is serialized?) can be traced back to a specific aircraft?

From the relatively poor images in the video, the projectile in question looks to be a rather specific part and not a standard bolt at all. Also, the characters "15K" appear to be stamped on the part. I suspect some of our aircraft mechanics might recognize that part and post that "it's a _____ off of a _____", in which case it should be a simple matter to narrow down which aircraft flying over that area at that time uses such a part and is currently missing one.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: indio66
Posted 2010-03-26 09:24:08 and read 12495 times.

bolts fall out all the time - the world is an imperfect place

Indio

Topic: RE: Aircraft Bolt Falls From The Sky
Username: gr8circle
Posted 2010-03-26 09:32:30 and read 12451 times.

Sorry....couldn't resist this...but is this the ultimate "bolt from the blue...?" 

Topic: RE: Aircraft Bolt Falls From The Sky
Username: TZTriStar500
Posted 2010-03-26 16:12:07 and read 11182 times.

I'm skeptical this is an aircraft 'bolt' or part at all as it does not resemble anything common I have seen. Also, any high stress bolts would not have a P/N or identification stamped into the metal like this does as it would cause a stress concentration and ultimate failure under load. The only possibility I can think of if it is aircraft related is that it is some type of alignment tool that was left in and fell out since tools are not meant to be left in place obviously.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: EDICHC
Posted 2010-03-26 16:17:41 and read 11099 times.

Quoting gr8circle (Reply 5):
Sorry....couldn't resist this...but is this the ultimate "bolt from the blue...?" 

Would that be from a JetBlue a/c then? Virgin Blue don't go anywhere near Florida.  

Topic: RE: Aircraft Bolt Falls From The Sky
Username: Fly2HMO
Posted 2010-03-26 16:50:09 and read 10630 times.

Quoting TZTriStar500 (Reply 6):
I'm skeptical this is an aircraft 'bolt' or part at all as it does not resemble anything common I have seen. Also, any high stress bolts would not have a P/N or identification stamped into the metal like this does as it would cause a stress concentration and ultimate failure under load. The only possibility I can think of if it is aircraft related is that it is some type of alignment tool that was left in and fell out since tools are not meant to be left in place obviously.

Agreed. Sounds more like a knee jerk reaction on part of the truck owner, and he sounds suspiciously sensationalist about it.

Quoting richierich (Reply 2):
, the only other viable option I can think of would be if the bolt was fired from some sort of homemade gun or sling shot.

I would not be surprised, I made such things when I was a kid, but I at least was smart enough to not shoot it across a street or into the air.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: HercTech
Posted 2010-03-26 17:41:02 and read 10051 times.

I worked for several years as a structures tech and i cant say I have ever seen a fastener that looks like that. Of course i only worked on three different types of aircraft, and if this came from the sky then it probably didnt come from the type of aircraft i worked on.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: Ltbewr
Posted 2010-03-26 18:11:39 and read 9646 times.

Of course the bolt could have come from a small personal aircraft or maybe some DC-3 hauling stuff from the Carribbean, more likely than from a mainline jet.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: tdscanuck
Posted 2010-03-26 18:35:14 and read 9355 times.

Quoting richierich (Reply 2):
What are the chances this bolt (it is serialized?) can be traced back to a specific aircraft?

Bolts aren't generally serialized. That said, aircraft bolts are usually pretty easy to distinguish from run-of-the-mill hardware bolts, so narrowing it down shouldn't be that hard.

This, however, doesn't appear to be a bolt. It does look an awful lot like an overpressure relief poppet.

Tom.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: Okie
Posted 2010-03-26 19:09:37 and read 8995 times.

Quoting tdscanuck (Reply 11):

This, however, doesn't appear to be a bolt. It does look an awful lot like an overpressure relief poppet.

Definetly not a bolt. the square shank on one end seems usual. How about something from military? Part of a dipstick of some kind?

Okie

Topic: RE: Aircraft Bolt Falls From The Sky
Username: LTC8K6
Posted 2010-03-26 19:10:55 and read 8979 times.

15KS is visible on the part.

It doesn't take much impact force to do that to a tempered glass sunroof.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: olympic707
Posted 2010-03-26 19:23:07 and read 8842 times.

Looks like a part or a valve that belongs to a automatic transmission valve body that has been laying outside in the weather for some time.

My   

Yanni

Topic: RE: Aircraft Bolt Falls From The Sky
Username: LTC8K6
Posted 2010-03-26 19:31:53 and read 8739 times.

You'd think it would not land that way if it fell from the sky...

Topic: RE: Aircraft Bolt Falls From The Sky
Username: RoseFlyer
Posted 2010-03-26 20:39:08 and read 8087 times.

Parts fall off of airplanes all the time. There are lots of different parts that come off from bolts to tire treads. Losing a part in flight is a reportable incident, so it is recorded, but often it is nto known what happened.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: Panman
Posted 2010-03-27 00:29:54 and read 6611 times.

I've worked on Boeing 727/737/747/757/767 and Airbus A300/319/320/321/340/380 as well as a variety of Piper, Cessna, Beech and Socata aircraft and have never seen anything remotely looking like that on any of the aircraft I have worked on. Neither have I used tooling that resembles that. My guess - he's trying it on...

pAnmAn

Topic: RE: Aircraft Bolt Falls From The Sky
Username: bzwebner
Posted 2010-03-27 04:47:30 and read 5092 times.

It actually looks like one of the bolts that holds the cowling of a Cessna 172 together, those things are loose / falling out all the time.

Topic: RE: Aircraft Bolt Falls From The Sky
Username: Panman
Posted 2010-03-27 06:28:43 and read 4335 times.

Not on the ones I have worked on.

Panman

[Edited 2010-03-27 06:29:39]

Topic: RE: Aircraft Bolt Falls From The Sky
Username: maxpower1954
Posted 2010-03-27 06:55:57 and read 4077 times.

Something seems off about the physics of this - as small as that "bolt" I wouldn't think it reach enough velocity to create that kind of damge.

Plus, it doesn't resemble any part I've ever seen on an airplane in 38 years of flying from Cessnas to Airbuses.


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