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Thread: A23-24 Usuable Fuel

  1. #1

    A23-24 Usuable Fuel

    My understanding of this service instruction is that it adds yellow bands to the fuel gauges and nothing else.

    The reason for the service instruction is that some geneous made a prolonged slip when he was almost out of fuel and managed to unport the tank he was using. The lawyers countered with a service instruction to make you land with 15 gallons of fuel left in the tanks.

    I fly an A23 which I think is the same as the A23-24 except for some beefing up of structure around the baggage compartment. I believe that your model also returns all excess fuel to the left tank. I will run the right tank pretty far down in level flight with altitude and land on the left tank with 10 or more gallons in it. I don't do maneuvers with the tank that I am using below 1/4 indicated.

    Mileage may vary.

    huntmlh <huntmlh@yahoo.ca> wrote: Cheers,

    I was wondering if anyone could shed some light on S.I. 0624-281,
    reduction of usable fuel from 58.8 to 52.2 G. The A23-24 that I have
    been flying has the placards on the fuel selector that indicated 26G
    per side. Placards on the wings indicate 29 G per side. In addition
    the POH indicates that there will be "yellow bands" on the fuel gauges
    if the S.I. was completed; the fuel gauges do not have these
    indicators.
    My questions:
    1. What is the S.I. 0624-281; what modificatons were made and why?
    2. For acurate fuel planning is there a definitive way to tell if the
    S.I. has been completed on this A/C?
    3. If there a min fuel that is required for T/O?


    Mike









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  2. #2

    A23-24 Usuable Fuel

    The SI was for a "less than skilled" person who unported a fuel
    intake during a slip as Willis stated. The actual usable fuel DOES
    NOT change in that there is no fuel system alterations other than the
    modifications to the placards. The placards overrule the tanks,
    unfortunately, but fortunately you can exceed the internal placards
    when your butt is hanging out.


    If you have the IO-360 in your A23-24 the fuel system does NOT return
    the excess fuel. That is one of the differences beween the
    Continental and Lycoming fuel injection systems in that Lycomings do
    not create "excess" fuel.



    --- In musketeermail@yahoogroups.com, "huntmlh" <huntmlh@y...> wrote:
    >
    > Cheers,
    >
    > I was wondering if anyone could shed some light on S.I. 0624-281,
    > reduction of usable fuel from 58.8 to 52.2 G. The A23-24 that I
    have
    > been flying has the placards on the fuel selector that indicated
    26G
    > per side. Placards on the wings indicate 29 G per side. In
    addition
    > the POH indicates that there will be "yellow bands" on the fuel
    gauges
    > if the S.I. was completed; the fuel gauges do not have these
    > indicators.
    > My questions:
    > 1. What is the S.I. 0624-281; what modificatons were made and why?
    > 2. For acurate fuel planning is there a definitive way to tell if
    the
    > S.I. has been completed on this A/C?
    > 3. If there a min fuel that is required for T/O?
    >
    >
    > Mike
    >






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  3. #3

    A23-24 Usuable Fuel

    Mike -

    Everyone will likely agree - this was a "paperwork - KYA" Service Bulletin - due
    to some idiot running out of fuel.

    Don't take off without any fuel in your tanks (yellow bands.)

    Don't run out of fuel in flight unless you mean to. Don't do it in both tanks at
    the same time.

    Don't land in a slip when you are out of fuel and expect the engine to keep running.

    In other words, don't run out of fuel.

    Bill Howard
    BeechSportBill
    N1927W 1973 Sport 150
    Beech Aero Club NorthWest Region Director
    ---- Msg sent via @bmi.net Mail v4 - http://www.bmi.net


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