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What caliber do skymarshalls/pilots use?

Discussion in 'The Okie Corral' started by peter3334, Dec 16, 2004.

  1. peter3334

    peter3334

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    Hi,

    What caliber/calibers do skymarshalls/pilots use?

    What have the "decision makers" decide is the "best" caliber,
    to fire inside an aircraft and why?

    thanks,

    ph.
     
  2. SlimlineGlock

    SlimlineGlock

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    The "best" caliber to use in an aircraft is one that delivers a one-shot kill to the cockpit intruder.

    Even .45s will not cause a decompression at altitude. A football-size hole might give some concern.
     

  3. Stephen

    Stephen Hola! Millennium Member

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    The current batch of pilots training in NM are being outfitted with HK USP 40 Compacts.
     
  4. SpiritZeroThree

    SpiritZeroThree

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    i was under the impression that TSA was giving the sky marshals P229's in .357Sig
     
  5. NetNinja

    NetNinja Always Faithful

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  6. Stuckinhell

    Stuckinhell

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    The FFDOs are being issued USP 40's. The Marshalls, I believe, use .357s.
     
  7. Reheater

    Reheater Yarr

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    Whats the penetration differnce between the two rounds at close range. Not so much that I'd be worried about breaching the hull of the aircraft. Id be more worried about a round overpenetrating the target or interior walls of the plane and hitting a passanger/crewmember. I can only imagine how hard it would be to engage a threat on a crowded airliner.
     
  8. G36pilot

    G36pilot

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    Airliner pressure vessel damage by firearm (hull breach to us Sci-Fi fans) is not much of a problem.

    Cabin pressure is provided by each engine supplying a fixed rate of input air with pressure regulation controlled by an outflow valve(s). The outflow valve vents air overboard to fine tune cabin pressure.

    Pressure vessels are not perfectly sealed and often have multiple small leaks caused by seal leakage, age, damage, material flexing, etc. Outflow is automatically adjusted as necessary to compensate. There is a fairly large performance envelope for this system. I've experienced several DC9 main cabin door seal leaks caused by the seal improperly folding during closure resulting in a loud whistling sound for either the entire flight or until the seal later reseated itself. Daylight was visible in one instance. In all cases the pressurization never skipped a beat.

    The primary outflow valve on most airliners is large. On most, larger than two cabin window dimensions. Large holes would cause the valve to fully close and supply air volume will increase.

    Several magazines worth of ammo into a fuselage probably won't even fully close an outflow valve. Those "golden BB" movie shots are just that... good theater.
     
  9. CaptainOveur

    CaptainOveur

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    The engines supply a given amount of pressure into the cabin at all times. The outflow valve IS how the pressure is regulated. To increase the pressure you close the valve, to decrease it you open it. It is essentially "leaking" all the time, which is why a few more holes doesn't really do anything.

    When pilots encounter a rapid depressurization they will manually close the outflow valve, ensure that the air-cycle packs (which supply air to the cabin) are on "high" and start Px O2. This obviously has several steps of redudancy, which reinforces the point that; "it's no big deal".
     
  10. Sinister Angel

    Sinister Angel I'd Hit It!

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    Uhh, stupid question, but why do they call it an outflow valve instead of just a pressure regulating valve?

    Sorry, been messing with pneumatics and hydraulics this past semester :)
     
  11. SIGSAREBETTER

    SIGSAREBETTER Teh Pieman

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    As others have mentioned, the Air Marshals carry .357SIG chambered SIGarms P229 pistols, while FFDO's carry the new HK P2000 .40.
     
  12. G36pilot

    G36pilot

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    Apologies for contributing to a semi thread "hijack". Remember to include "hijack" on the list of prohibited words not to be stated, written, mouthed, or signed anywhere near commercial aircraft operations. :)

    Sinister Angel- My best guess. Outflow valve since it controls air venting to the atmosphere. PRV as it controls pressure input from one system or system station to another.

    SIGSarebetter- Nice handle, fine firearms.

    "As others have mentioned, the Air Marshals carry .357SIG chambered SIGarms P229 pistols, while FFDO's carry the new HK P2000 .40."

    It is mazing the amount of security detail you can find in the newspapers. :)
     
  13. Pilot

    Pilot

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    Because air is flowing out of the valve most of the time. There is more air coming into the aircraft than is needed to pressurize the cabin. The outflow valve controls the cabin pressure, but the extra air flowing thru the cabin keeps the cabin from getting stuffy.

    Pilot
     
  14. HKevolution

    HKevolution

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    Uh, actually FFDO's are carrying USP40c's; not P2000's. Although rumor has it there is a very limited number of guys out there that were issued either the Sig 229, a Glock 40 Cal, or a P2000 in 40. You would think that they would issue the same cal. as FAM's but for some reason, they didn't.
     
  15. Pilot

    Pilot

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    The first bunch of FFDO's were issued Glocks. Then the TSA decided to go to H&K for some reason. Like any agency, there are different folks who get to decide what is bid on, who carries what etc.