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LATAM Airlines finds bullet hole in B767

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Old 19th Jan 2017, 02:04
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LATAM Airlines finds bullet hole in B767

Latam Airlines finds bullet hole in Boeing 767 in Brazil | Reuters

REUTERS -- Latam Airlines Group found a bullet hole in a wing of a Boeing 767-300 during maintenance in Brazil, the company said on Wednesday, the jet having flown to New York, Barcelona and Lima in the past week.

The aircraft, which runs long-range routes out of international airports in Rio de Janeiro and Sao Paulo, went in for routine inspection on Sunday, a Latam representative said.

"There is no way to be certain where it happened," she said. "The airplane flies various routes."

In a statement, the airline said it had notified federal police and civil aviation authority ANAC, which it was still investigating. ANAC said it was supporting a police investigation.

"Latam underscores that the incident did not compromise the security of its operation," said the airline, Latin America's largest carrier.
AvHerald has some additional details and a picture:

Incident: LATAM B763 at Sao Paulo on Jan 15th 2017, aircraft being shot at

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Old 19th Jan 2017, 15:03
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Being a 7.62, it's probably from an AK47 that are common around Rio de Janeiro. Given the routes for that plane, I'd bet it was shot while landing at GIG. Probably after flying over some "favela", a straight-up shot could reach it.

And considering that drug dealers use to fire just to practice or for fun, I bet someone just aimed and shot.

Luckily, no serious damage was done nor a passenger was hit.
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Old 19th Jan 2017, 18:29
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More from this report: B767 shot on approach to Rio









Last edited by AF1; 19th Jan 2017 at 18:31. Reason: additional images
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Old 19th Jan 2017, 18:49
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hmm looks spent to me......
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Old 19th Jan 2017, 21:05
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looks fake to me
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Old 19th Jan 2017, 21:19
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Loma, I am with you. The tip of that projectile is not deformed at all. I'd have thought that it hitting a flying plane might have an impact on the tip ...
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Old 19th Jan 2017, 21:42
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The tip of that projectile is not deformed at all. I'd have thought that it hitting a flying plane might have an impact on the tip ...
Spin-stabilized bullets tend to keep the orientation they had when they left the barrel, not streamline. It's entirely possible that the bullet was falling base-first when the plane hit it.
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Old 19th Jan 2017, 23:05
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Originally Posted by Small cog
7.62 is also NATO standard.
7.62 x 51mm is NATO, 7.62 x 39mm is Soviet where 51mm and 39mm refer to the length of the casing. Standard NATO spitzer point, boat-tail, full metal jacket (ball) projectiles are 33.3mm long. The round in the photo is almost certainly a 7.62 x 39mm projectile.
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Old 20th Jan 2017, 01:01
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Spin-stabilized bullets tend to keep the orientation they had when they left the barrel, not streamline. It's entirely possible that the bullet was falling base-first when the plane hit it.
I'll accept that.

I agree with lonewolf about the tip but I was making my jugements about the damage to the skin is not from a ballistic impact >500 ft/s
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Old 20th Jan 2017, 01:43
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how much damage would you expect in a hard-tipped bullet hitting aluminium? Would be nice to hear from a ballistics expert.
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Old 20th Jan 2017, 03:26
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It's evident from the photo that the bullet hit the LE flap whilst it was extended, and the mushrooming about the tip in the first photo shows that it entered tip first. From experience I would guess the aircraft was probably at about 2,000 feet when hit, if the fire were vertical, of course lower if oblique, which would seem to be the case with LE extended. One occasion I had a crewman sitting on the floor with his back against my seat and we took a burst of AK while flying at 2,000. He jumped up with an expletive and found a round had penetrated the outer skin and caused just a dent to the floor where his buttocks were positioned. It was generally assumed that at 1,500 you were safe from AK.

Last edited by megan; 20th Jan 2017 at 04:01. Reason: Rejig
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Old 20th Jan 2017, 04:50
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It's entirely possible that the bullet was falling base-first when the plane hit it.
Actually, it's not. Look at the AV Herald photo, it shows that the bullet penetrated the skin of the LE flap in the usual fashion, tip first.
Also, bear in mind that the round in question looks like a FMJ military round; they will only deform if they strike a material that is harder than their jacket. The skin on the LE flap is probably 2090-T84 aluminium-lithium alloy or possibly 7475-T73 alloy; both are controlled toughness alloys with reasonably high strength that are fracture and fatigue crack resistant. However, they are not particularly resistant to penetration.
Given the minimal penetration and lack of deformation it does not appear to have been a particularly high energy impact. If I had to hazard a guess I'd say that the projectile was descending at the point of impact.
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Old 20th Jan 2017, 14:45
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how much damage would you expect in a hard-tipped bullet hitting aluminium? Would be nice to hear from a ballistics expert.
edges don't roll and cracks don't spread.
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Old 21st Jan 2017, 00:33
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If I had to hazard a guess I'd say that the projectile was descending at the point of impact.
I'd hazard a guess that your guess is wrong. The reasonably-accurate article in the link below indicates that falling bullets tumble and often fall blunt end first.
I'll hazard a guess it was a bad shot, aimed upwards, and the bullets energy was largely spent upon contact with the flap.
It may even have been a "celebratory fire event".

Forensic Outreach.com - library - the falling bullet myths legends and terminal velocity
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Old 21st Jan 2017, 01:47
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I'll hazard a guess it was a bad shot, aimed upwards,
'Upwards' could describe quite a few trajectories. A shot straight up will lose it's kinetic energy and tumble on the way back down. But a shot fired with some elevation (say 45 degrees) will still follow a ballistic trajectory past its maximum altitude. So it is possible that this round was fired in such a manner and encountered the LE slat from above while still flying pointy end first with significant kinetic energy.
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Old 23rd Jan 2017, 05:21
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I'd hazard a guess that your guess is wrong.
Did you read that reasonably-accurate article by any chance?

In keeping with what EEngr said, The Forensic Outreach Team make the point that;

If fired at an angle between 20 to 45 degrees or even more, then the bullet will travel farther with a greater probability of hitting something (or someone). The uninterrupted ballistic trajectory will make it far less likely to engage in a tumbling motion, and allow it to continue at a higher speed over terminal velocity.
For the sake of clarity allow me to amend my earlier statement to read,

If I had to hazard a guess I'd say that the projectile was descending on an uninterrupted ballistic trajectory at the point of impact.
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Old 24th Jan 2017, 16:49
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It was generally assumed that at 1,500 you were safe from AK.
Well, that's the 'effective' range..... but you'd still want to keep your head down at double that.
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Old 24th Jan 2017, 17:16
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If I had to hazard a guess I'd say that the projectile was descending on an uninterrupted ballistic trajectory at the point of impact.
I agree. It certainly looks like it was travelling downwards point first when it hit.
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Old 24th Jan 2017, 18:43
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In ancient history, when my squadron was flying in a hot war, the briefing was that the small arms envelope extended up to 3000 ft. and could be considered dense.
That should still be a fairly good number for shoulder fired, gunpowder propelled, projectile weapons.
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Old 24th Jan 2017, 19:09
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In ancient times, when I was in basic training in the German army, we learned the safety distance for a G3 (7.52x51) was 3000m, the effective combat range of the same gun when mounted was 900m.

I don't know at what point the projectile goes transonic (and starts to tumble), but I guess it's probably at 2000+ m.

I heard the AK47 has a somewhat shorter barrel, so the bullets should be a bit slower, but they still should reach up a few thousand feet.
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