737 MAX Flight Crew Operations Manual
Fuel -
Controls and Indicators
12.10.6
MN-FLT-OH-201
2
Fuel LOW Alert
Displayed (amber) –
• fuel tank quantity less than 907 kgs in related main tank
• display remains until fuel tank quantity is increased to 1134 kgs
1B785, 1B786, 1J585 - 1J594
The fuel quantity arc and digits on tank(s) with low fuel quantity turn amber or
1B401, 1B402, 1B801 - 1B824
The fuel quantity digits on tank(s) with low fuel quantity turn amber.
3
Fuel Configuration (CONFIG) Alert
Displayed (amber) –
• either engine running
• center fuel tank quantity greater than 726 kgs; and
• both center fuel tank pump switches positioned OFF
1B785, 1B786, 1J585 - 1J594
The quantity arc and digits on the center tank fuel quantity indicator turn amber or
1B401, 1B402, 1B801 - 1B824
The quantity digits on the center tank fuel quantity indicator turn amber.
Display remains until –
• both engines not running
• center fuel tank quantity less than 363 kgs
• one center fuel tank pump switch ON
1B785, 1B786, 1J585 - 1J594
The quantity arc and digits on the center tank fuel quantity indicator return to
normal or
1B401, 1B402, 1B801 - 1B824
The quantity digits on the center tank fuel quantity indicator return to normal.
4
Fuel Imbalance (IMBAL) Alert
Displayed (amber) –
• main tanks differ by more than 453 kgs
• displayed below main tank with lower fuel quantity
• displayed when airplane is on the ground or in the air
• inhibited by fuel LOW indication when both indications exist
• displayed until imbalance is reduced to 91 kgs
1B785, 1B786, 1J585 - 1J594
The fuel quantity arc and digits on tank with lower fuel quantity turn amber or
1B401, 1B402, 1B801 - 1B824
The fuel quantity digits on tank with lower fuel quantity turn amber.
5
Fuel Disagree (FUEL DISAGREE) Alert
Displayed (amber) - The totalizer fuel quantity and the FMC calculated fuel
quantity disagree.
March 1, 2021