737 MAX Flight Crew Operations Manual
Supplementary Procedures -
Fuel
SP.12.4
MN-FLT-OH-201
Refueling
Fuel Load Distribution
Main tanks No. 1 and No. 2 should normally be serviced equally until full.
Additional fuel is loaded into the center tank until the desired fuel load is
reached.
YA201 - YT705, YV401 - YV671
Note:
Main tanks No. 1 and No. 2 must be scheduled to be full if the
center tank contains more than 453 kgs of fuel. With less than 453
kgs of center tank fuel, partial main tank fuel may be loaded
provided the effects of balance have been considered.
Fuel Pressure
YA201 - YT705, YV401 - YV671
Apply from a truck or fuel pit. A nozzle pressure of 50 psi provides
approximately 1136 liters per minute.
Normal Refueling
YA571, YB104 - YC095, YC572 - YD256, YF631 - YF832, YK721 - YM648, YN261 - YN702, YR601 - YV671
When a full fuel load is required, the fuel shutoff system closes the fueling
valves automatically when the tanks are full. When a partial fuel load is
required, the fuel quantity indicators are monitored and the fueling valves
are closed by manually positioning the fueling valve switches to CLOSED
when the desired fuel quantity is aboard the airplane.
Refueling with Battery Only
When the APU is inoperative and external power is not available, refueling
can be accomplished as follows:
Battery switch .................................................................................... ON
Note:
The refueling system will operate normally. Operation is
limited only by battery life.
Refueling with No AC or DC Power Source Available
When it becomes necessary to refuel with the APU inoperative, the
aircraft battery depleted, and no external power source available,
refueling can still be accomplished:
Fueling hose nozzle ..............Attached to the refueling receptacle
Fueling valves ........................... Open for the tanks to be refueled
March 1, 2021