FUEL SYSTEM DRAIN
VALVES
Drain valves are pictured in Figure 5-13 and
are located as illustrated in Figure 5-12.
The crossflow drain, L & R vent/expansion
line drains, L & R refuel (transfer) line drain,
L & R engine feed line drains and L & R fil-
ter drains are located in the center wing area.
The crossflow drain and the left line drains are
accessible through an access door located
under the wing just to the left of centerline. The
right line drains are accessible through an ac-
cess door just to the right of centerline. The
above drains each have a spring loaded closed
petcock type valve.
The L & R wing sump drains are located in the
lower wing skin. The inboard wing sump drains
are flush mounted drains located just forward
of the main gear wheel well, and the outboard
wing sump drains are located just outboard of
the outboard gear doors. The general positions
are illustrated in Figure 5-12. The wing sump
drains are flush with the bottom of the wing and
require a screwdriver to open them.
FUELING/DEFUELING
GENERAL
T h e a i r c r a f t f u e l s y s t e m a n d e n g i n e s a r e
qualified for use with the fuel types spec-
i fi e d i n t h e A i r c r a f t F l i g h t M a n u a l F U E L
S E RV I C I N G A d d e n d u m . AVG A S i s n o t
a p p r ove d f o r u s e .
The aircraft may be serviced with fuel by grav-
ity filling through the fuselage tank filler port
or, the aircraft can be serviced through the
single point refueling system. Electrical power
(airplane or external) is not required for grav-
ity fill or single-point refueling.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
FlightSafety
international
5-19
FOR TRAINING PURPOSES ONLY
Figure 5-13. Fuel Sump Drain Valve