250 Knots IAS below 10,000 feet - is it adhered to?

Discussion in 'Flight Following' started by Lndwarrior, Apr 4, 2019.

  1. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    https://www.boldmethod.com/learn-to-fly/regulations/why-is-there-a-250-knot-speed-limit/

    They (and others) seem to think it has something to do with mitigating midairs. Probably not as valid today with all the radar coverage but it’s still in place nonetheless. I’ve also read about reducing birdstrike damage but haven’t seen any real data on that.

    At any rate, ATC has nothing to do with it. 250 kts or 450 kts, they don’t care.
     
  2. Larry in TN

    Larry in TN Cleared for Takeoff

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    As the previous post says, it is about safety. If it were for ATC then ATC would be authorized to approve deviations from it. They are not.

    The 250/10,000 rule compliments the VFR cloud clearance requirements from 14 CFR 91.155. Below 10,000' the VFR weather minimum and cloud clearance requirements are less restrictive. At 10,000' and above the visibility and cloud clearance requirements increase for VFR aircraft. This is because, at and above 10,000', aircraft will be going faster so pilots need more time (distance) to see and avoid.
     
  3. dmspilot

    dmspilot En-Route

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    And transponders are required above 10,000 feet.
     
  4. RhinoDrvr

    RhinoDrvr Pre-takeoff checklist

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    One thing that has always bothered me a bit is that when I put in my flight plan, and file with a TACAN/Mode C only equipment code, I still get slammed with GPS fixes. We got RNAV capability and can now file /W a few years ago, which has greatly eased IFR operations, but why bother with an equipment suffix if I'm going to be bounced around to GPS waypoints anyway...
     
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  5. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    Same problem with GA we’ve been dealing with for years. All of us have gotten direct some GPS fix when we’ve filed /U. Unless they’re also a pilot, a lot of the controllers don’t understand the the navigation capabilities of the aircraft they’re working.
     
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  6. EvilEagle

    EvilEagle Cleared for Takeoff

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    Yep! I was going to Nellis (Las Vegas) one day in an F-15. I stopped for fuel in Colorado Springs, filed a flight plan and hopped in the jet. I called clearance "Jazz 1, you are cleared to Nellis, new route blah blah blah..." I tell them standby then look it up and it's all VOR to VOR. We don't have a VOR and can't accept a clearance to one. I relate that to them and they say standby then "ok, cleared to Nellis via blah blah blah" - "Clearance, those are all VORs also, I can't accept those either".

    After a few mins they say (in an exasperated tone) "Well, what clearance CAN you accept Jazz?" I say, well I can accept "Cleared as filed". Ok, Jazz 1 you are cleared as filed.

    This experience is one of the many reasons I don't feel the least bit bad when I file an 800-mile flight plan as departure direct destination. IME, they don't even bother looking at the route you filed or why you might have filed it.
     
  7. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    “Jazz.” I like that. Goes with the whole (JZ) New Orleans vibe.

    Still no VOR? You Guys TACAN / INS then?
     
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  8. Kritchlow

    Kritchlow Final Approach

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    I’m surprised they didn’t just read you the lat/longs of the VORs.
     
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  9. EvilEagle

    EvilEagle Cleared for Takeoff

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    Yep, TACAN/INS only - which is a /I on the form - "enroute nav capable" but that doesn't mean we can go to GPS fixes (or VORs)

    I've only had one controller (that I can recall) in 18+ years of flying this jet that read me lat/longs -even when I asked. Dunno why other than just a lot of radio time to read them.
     
  10. EvilEagle

    EvilEagle Cleared for Takeoff

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    4DEEBB7E-F9E4-45F9-92E0-30CF67143D9A.jpeg
    Makes for a good tail flash too!
     
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  11. iamtheari

    iamtheari Pattern Altitude

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    I talked to a couple guys who showed up at an air show in a T-38 and I asked them what it's like to fly. After telling me what avionics they don't have, their conclusion was "If you can say 'unable,' you can fly this jet."
     
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  12. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    Off by the “orange dot!”
     
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  13. EvilEagle

    EvilEagle Cleared for Takeoff

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    That's a good one - the T-38C though you are out of luck now. That thing has everything - there are a few A models still floating around but they are getting less and less by the day.
     
  14. RhinoDrvr

    RhinoDrvr Pre-takeoff checklist

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    The funny thing is that as I progressed through training to my fleet aircraft, each one got less and less sophisticated from a navigation perspective.

    T-6B - Full glass cockpit, EICAS, FMS, RNAV, ILS, VOR/DME

    T-45C - TACAN, ILS

    F/A-18 - TACAN only (RNAV now...still no ILS)
     
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  15. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    Don’t need no stinkin’ ILS / GPS. Final controllers got mouths to feed!

    #RFClivesmatter, #saynotoJPALS