BHT-206L4-MM-1
5-00-00
Page 128 Rev. 13 25 FEB 2011
ECCN EAR99
Chapter 12 a. Make sure all fuel has been drained from aft and
forward fuel cells.
b. Service fuel cell with 10 gallons (37.9 L) of fuel.
BHT-206L4-FM-1 c. Perform normal engine starting and run-up checks.
d. Set throttle to full open and operate engine at 100% N
2
for a minimum of 2 minutes with both fuel boost pumps OFF. If
flameout or power loss occurs, refer to step 3.
e. Perform normal engine shutdown.
f. Select fuel quantity switch to forward position to ensure
fuel transfer from aft to forward fuel cells has not taken place.
2. When maintenance and/or component change is
conducted above the top fitting of the fuel cell, immediately
following the fuel system maintenance and/or component
change/removal (fuel pressure transducer, fuel valve,
scheduled fuel component change/removal fuel line or hose),
ground run helicopter and check for air or fuel leaks and for
proper operation as follows:
BHT-206L4-FM-1 a. Perform normal engine start and run-up checks.
b. Set throttle to full open and operate engine at 100% N
2
for a minimum of 2 minutes with both fuel pumps OFF. If
flameout or power loss occurs, refer to step 3.
3. If flameout or power loss occurs, air is entering the
helicopter or engine fuel system, or an engine pneumatic leak
exists. Malfunction must be corrected before commencing flight
operations.
a. Verify fuel boost pump, check valve, and fuel shutoff
valve for proper operation.
b. Make sure all hoses and lines are serviceable and do
not have cracked flares and that B nuts are correctly torqued.
5-44. AFTER FUEL SYSTEM MAINTENANCE AND/OR COMPONENT CHANGE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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