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Fxed Reserve Use.

Old 22nd Jul 2011, 15:47
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Fxed Reserve Use.

There has been some different opinions regarding the use of Fixed Reserve.

1. Can you use the Fixed Reserve?

2. If not under what circumstances can the Fixed Reserve be used?

Thanks


beyes
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Old 22nd Jul 2011, 16:27
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In a nutshell (I don't give long-winded answers) -

1. Yes (see next answer).

2. Stuck gear, stuck flaps etc on arrival overhead the destination/alternate,
or any emergency situation that deems its use in order to stay alive in one
piece.
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Old 22nd Jul 2011, 16:53
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No, you can't use it. If you get down to FR you must shut down the engines and crash where you are........

You can't PLAN to use it, but of course you can if you have no choice- under most sets of legislation it would be classed as an emergency, however.
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Old 22nd Jul 2011, 19:10
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There if you need it

Always plan to be on the ground, with your fixed reserve still intact.

If you are still airborne, and using your fixed reserve, consider yourself entering a "fuel emergency" phase, and react accordingly, depending on the circumstances. eg, on approach somewhere, (if visual) no big deal.
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Old 22nd Jul 2011, 22:24
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CAAP 234-1 Guidelines for aircraft fuel requirements

As defined in the following link to CAAP

fixed fuel reserve means an amount of fuel, expressed as a
period of time holding at 1 500 feet above an aerodrome at
standard atmospheric conditions, that may be used for
unplanned manoeuvring in the vicinity of the aerodrome at
which it is proposed to land, and that would normally be
retained in the aircraft until the final landing.
CAAP 234-1 Guidelines for aircraft fuel requirements
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Old 22nd Jul 2011, 22:59
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Fixed Reserve can be used, but only during the last 30 mins or so, leading up to fuel exhausting!
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Old 22nd Jul 2011, 23:08
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A CAAP is just that....and advisory publication. It is not a Reg.
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Old 23rd Jul 2011, 00:23
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PA39 posted:-
A CAAP is just that....and advisory publication. It is not a Reg.
So PA39, are you going to provide the difinitive answer or just debunk the CAAP?

Please refer to the blue shaded box to the left of the front page of CAAP 234-1.
This publication is only advisory
but it gives a CASA preferred
method for complying with the
Civil Aviation Regulations (CARs)
1988.
It is not the only method, but
experience has shown that if you
follow this method you will
comply with the Civil Aviation
Regulations.
Always read this advice in
conjunction with the appropriate
regulations.
Also refer to CAR 234 (3)(d)

Last edited by Paul O'Rourke; 23rd Jul 2011 at 00:47. Reason: Maintain consistency of responses
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Old 23rd Jul 2011, 02:32
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So PA39, are you going to provide the difinitive answer or just debunk the CAAP?
Any CAAP is advisory only. You are not required to conform to it. You can legally deviate from any CAAP.

The "definitive" answer to the original question: YES, you can consume fixed reserve fuel.
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Old 23rd Jul 2011, 02:50
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Most company ops manuals I have seen stick to the CAAP or something very similar. Private Ops I guess you can burn it but buyer beware, if something goes wrong you don't really have a leg to stand on, as the lawyers will reference the CAAP.
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Old 23rd Jul 2011, 02:54
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Once you have used some of your fixed reserve you then fill in an ASIR to explain why you needed to!
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Old 23rd Jul 2011, 04:16
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Once you have used some of your fixed reserve you then fill in an ASIR to explain why you needed to!
Not necessarily. The requirement to make a report is dependent on whether the fuel state became "dangerously" low or not.

Most company ops manuals I have seen stick to the CAAP or something very similar. Private Ops I guess you can burn it but buyer beware, if something goes wrong you don't really have a leg to stand on, as the lawyers will reference the CAAP.
The lawyers can't get you for burning fixed reserve if you are a private operation. It does not matter what the CAAP says in this case.

For a commercial operation (that references the CAAP in its fuel policy), however, if the lawyers are after you, it won't be because you deviated from the fuel policy, it will be because you ran out of fuel.

In which case, the rule they will get you on is CAR 234, which states "thou shalt not run out of fuel".
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Old 23rd Jul 2011, 05:01
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I am sure your insurance company will agree with you.

Next time you park your aeroplane with next to no fuel why don't you ring up your local Casa inspector and ask for a ramp check!
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Old 23rd Jul 2011, 05:32
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30 min of fuel goes pretty quickly when the weather has turned sh1tty
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Old 23rd Jul 2011, 06:48
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Next time you park your aeroplane with next to no fuel why don't you ring up your local Casa inspector and ask for a ramp check!
CASA would only be interested if you have broken some law. To have burnt some FR does not necessarily imply you have broken any laws.

If you are a private operation, then the only rule you may have broken is the one relating to submission of a report.

If a commercial operation, then whether you have broken anything depends on what it says in the "fuel policy" section of your operations manual.

Last edited by FGD135; 23rd Jul 2011 at 06:59.
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Old 23rd Jul 2011, 07:26
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Red face

Further to what Capt Fathom wrote, it is my belief that the Fixed Reserve is ALWAYS used in fuel starvation situations. You hardly ever read a fuel starvation IR where it has not been entirely utilised.
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Old 23rd Jul 2011, 07:34
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Fixed Reserve is ALWAYS used in fuel starvation situations.
Not necessarily so. In fuel exhaustion, yes, but there are cases where fuel starvation occured with plenty of fuel in the tanks.
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Old 23rd Jul 2011, 15:24
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Read your Ops manuals everybody.
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Old 23rd Jul 2011, 22:23
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Doesn't the proposed part 91 require an aircraft to land with a Thirty minute reserve intact? Presumably with prosecution occurring if you don't?

This seems to be a form of the old storemans lament - "but if I give you our only spare part to fit, then we won't have a spare!
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Old 24th Jul 2011, 02:55
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As long as you can taxi off the runway and park under your own steam then you are probably OK!

That said, I still work on the 45min fixed (which I regard as untouchable) + 15% variable reserves that I learnt way back! Remember when Ops would actually scrutinise your flightplan and have Flightservice call you with questions when they thought things didn't add up?

Dr
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