737 MAX Flight Crew Operations Manual
Supplementary Procedures
Chapter SP
Fuel
Section 12
MN-FLT-OH-201
SP.12.1
12 Fuel
Fuel
File Highlight
Spar Fuel Shutoff Valve Operational Check
YA201 - YB271, YC453 - YD256, YF631, YF632, YK652 - YL815, YN107 - YN702, YR601 - YR648, YR661 - YR663
(SB Changes YD303, YD307)
Note:
Regulatory approval for use of the following flight crew
procedure(s) is required.
Note:
The check is considered failed for any of the following
procedures if the SPAR VALVE CLOSED light (located on the
fuel control panel) fails to illuminate bright during the check.
Unless accomplished by maintenance personnel, do
one
of the 3
following spar fuel shutoff valve checks once per flight day:
1. Spar Fuel Shutoff Valve Operational Check with Engine(s)
Shutdown
With AC power established on the airplane:
Verify that the engine No. 1 and engine No. 2 fire switches are in.
YA201 - YB271, YC453 - YD256, YF631, YF632, YK652 - YL815, YN107 - YN702, YR601 - YR648, YR661 - YR663
ENGINE START switches................................................................ OFF
Engine start lever (first engine) ...................................................... IDLE
Note:
During this check it is normal for the ENG VALVE
CLOSED light to transition from dim to bright, and remain
bright.
Wait
for approximately 10 seconds
Engine start lever (first engine) ................................................ CUTOFF
Verify SPAR VALVE CLOSED light transitions from extinguished,
to bright and then dim.
Engine start lever (second engine).................................................. IDLE
Note:
During this check it is normal for the ENG VALVE
CLOSED light to transition from dim to bright, and remain
bright.
Wait
for approximately 10 seconds
Engine start lever (second engine)............................................ CUTOFF
Verify SPAR VALVE CLOSED light transitions from extinguished,
to bright and then dim.
March 1, 2021
