Cessna Skyhawk 172N Pilot Operating Handbook page 243

Supplement POH
Reims/Cessna (F) 172 N&P
with TAE 125-02-114
WARNING:
WARNING:
Note:
Note:
(14) Avionic Switch – ON
(15) Radios – ON
(16) Electric Fuel Pump – OFF
If there are prolonged engine misfires or the
engine shuts down during the test, take off
may not be attempted.
The whole test procedure has to be
performed without any failure. In case the
engine shuts down or the FADEC lights are
flashing, take off is prohibited. This applies
even if the engine seems to run without
failure after the test.
If the test button is released before the self
test is over, the FADEC immediately
switches over to normal operation.
While switching from one FADEC to
another, it is normal to hear and feel a
momentary surge in the engine.
Page 4-13
Issue 2
Revision 7, Jan. 2018