Honda HondaJet HA-420 Pilots Operating Manual page 110

Honda Aircraft Company
HA-420 SYSTEMS
POM DESCRIPTION
A fuel isolation valve isolates the carry-through tank from the fuselage
tank. The valve is commanded OPEN on-ground for refueling operations
and is CLOSED at all other times to isolate the fuselage tank pressure
head from the C/T tank. The valve is controlled automatically by aircraft
avionics. Valve remains open on the ground, until commanded closed
after first engine start.
Figure 1-50. C/T Tank Level Control System
HJ1-29000-005-001
October 30, 2016 1-94
FOR TRAINING PURPOSES ONLY