Re: Piper Arhcer Checkout
CAR 3, which is the standard that a lot of airplanes were certified under, says basically the same thing:
"3.437(e) If an engine can be supplied with fuel
from more than one tank, it shall be possible to
regain the full power and fuel pressure of that
engine in not more than 10 seconds (for singleengine
airplanes) or 20 seconds (for multiengine
airplanes) after switching to any full tank after
engine malfunctioning becomes apparent due to
the depletion of the fuel supply in any tank from
which the engine can be fed. Compliance with
this provision shall be demonstrated in level
flight."
Actually it's ten seconds:
FAR 23.955(e) Multiple fuel tanks. For reciprocating engines that are supplied with fuel from more than one tank, if engine power loss becomes apparent due to fuel depletion from the tank selected, it must be possible after switching to any full tank, in level flight, to obtain 75 percent maximum continuous power on that engine in not more than -
(1) 10 seconds for naturally aspirated single engine airplanes;
(2) 20 seconds for turbocharged single engine airplanes, provided that 75 percent maximum continuous naturally aspirated power is regained within 10 seconds; or
(3) 20 seconds for multiengine airplanes.
CAR 3, which is the standard that a lot of airplanes were certified under, says basically the same thing:
"3.437(e) If an engine can be supplied with fuel
from more than one tank, it shall be possible to
regain the full power and fuel pressure of that
engine in not more than 10 seconds (for singleengine
airplanes) or 20 seconds (for multiengine
airplanes) after switching to any full tank after
engine malfunctioning becomes apparent due to
the depletion of the fuel supply in any tank from
which the engine can be fed. Compliance with
this provision shall be demonstrated in level
flight."