Page 202 2
nd
Edition – Rev 0
28-10
FUEL SYSTEM – MAINTENANCE PRACTICE
Figure 3a - Fuel Qty. Ind. zero position Figure 4b. - Fuel Qty. Ind. half position Figure 4c. - Fuel Qty. Ind. Full position
2. ELECTRIC FUEL PUMP TEST
Turn ON Master Switch. Ensure that Fuel Pump and
Instruments breakers are inserted
Ensure that advisory green light on the right of the switch
goes ON (or the green light on the annunciator panel goes on)
and Fuel pressure indicator pointer gives a feedback. Check
for green arc: 2.2 to 5.8 psi
Refer to Figures 5.,
6. and 7..
Set fuel pump switch and Master switch to OFF
Ensure that advisory green light on annunciator panel goes
OFF and Fuel pressure indicator pointer does not give a
feedback.
In case of test failure investigate the cause: whenever
fault could be related to electric fuel pump or/and fuel
pressure indicator it’s mandatory to replace which one is
faulty
Refer to par. 4
and/or par.6
FLYING WITH DAMAGED FUEL PRESSURE INSTRUMENTS
COULD JEOPARDIZE FLIGHT AND CAUSE INJURY OR DEATH.