FAR 91.117c Speed Under B

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  1. #1
    r9s
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    FAR 91.117c Speed Under B

    how aware are pilots of this requirement. most air carriers comply. some ask to go faster. but many (not all or most) of the GA guys flying gulfstreams, falcons, ect. just come blasting out of the airport apparently unaware of the FAR. our DP are designed with the speed requirement in mind and so sometimes i am scrambling to keep control of my departure flow.

  2. #2
    rooster's Avatar
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    Re: FAR 91.117c Speed Under B

    Call the FSDO with the N-number and it will stop quickly....

  3. #3
    StuSEL's Avatar
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    Re: FAR 91.117c Speed Under B

    Questions about this are asked on almost every FAA written test that private, instrument, commercial, and CFIs take. Pilots who claim they are unaware of the rule are lying or have terrible memory. Before you call the FSDO, though, make sure you're aware of what your winds aloft are, otherwise you'll look like the idiot. :P

  4. #4
    rooster's Avatar
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    Re: FAR 91.117c Speed Under B

    Quote Originally Posted by StuSEL View Post
    Questions about this are asked on almost every FAA written test that private, instrument, commercial, and CFIs take. Pilots who claim they are unaware of the rule are lying or have terrible memory. Before you call the FSDO, though, make sure you're aware of what your winds aloft are, otherwise you'll look like the idiot. :P
    I tried to explain winds aloft to a trainee last week and he gave me a blank look for a good 5 minutes...I wanted to beat him with his PCG...

  5. #5
    charliezuluatc
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    Re: FAR 91.117c Speed Under B

    I have seen cheap deal occur in the jet stream where you turn a plane, 30 degrees and looses 100 knots and bam up the six. The. There where an md80 gets launched infront of an airbus. Tell the md80 to do 280 or 290, the airbus 250 in a climb. Begging upstairs sector for higher. When launching aircraft you must almost be mindful of performance. Some planes are exempt from the speed rules. Tell a t 38 to do 170, listen to their laugh.

  6. #6
    charliezuluatc
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    Re: FAR 91.117c Speed Under B

    It will be very hard to turn in a pilot for busting the speed rules. They can come back and say we only went 20 kts over for safety. The winds, weather or whatever, conditions were ripe for us to bust it.

  7. #7
    r9s
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    Re: FAR 91.117c Speed Under B

    Quote Originally Posted by StuSEL View Post
    Questions about this are asked on almost every FAA written test that private, instrument, commercial, and CFIs take. Pilots who claim they are unaware of the rule are lying or have terrible memory. Before you call the FSDO, though, make sure you're aware of what your winds aloft are, otherwise you'll look like the idiot. :P
    that is good to know. when necessary i have advised pilots that speed requirement compliance is expected under the bravo. it is usually too late at this point and i have to vector some s turns for spacing until i get their speed back - but at least they have been reminded for next time.

    how does FSDO go about enforcement? if tower launches 10 flights in a row all like types and everyone is 200 kts perfectly intrail but pilot number 4 is 40kts faster loosing separation - it would seem unreasonable for a tailwind to only affect him. even if i ask them to say airspeed they will probably realize at that point and say "200kts".

    in any case i am not interested in "gotcha" but i am interested in compliance. which prompted the original question. glad to know that this rule should be well known to pilots.

  8. #8
    charliezuluatc
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    Re: FAR 91.117c Speed Under B

    Exactly and if they did say the pilot broke the role, the pilot can say for safety, aircraft performance and get out of it.

  9. #9
    rooster's Avatar
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    Re: FAR 91.117c Speed Under B

    Quote Originally Posted by charliezuluatc View Post
    Exactly and if they did say the pilot broke the role, the pilot can say for safety, aircraft performance and get out of it.
    Negative...Allegheny FSDO (KPIT) violated an LJY pilot last year for doing 260 KTS inside their Bravo....

  10. #10
    mbalunda's Avatar
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    Re: FAR 91.117c Speed Under B

    If I turned someone in every time they went over 250 kts all I'd be doing is paper work. The international flights of ORD start doing like 290 kts when they pass 6k feet. Not to mention they are below 10k and the sid is published for all aircraft to do 250 kts until advised.
    CPC @ ZAU

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