CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 601
Revision 1
28-10-00
SUPPLEMENTAL FUEL SYSTEM (OPTION)
INSPECTION/TEST
1. Supplemental Fuel System Inspection
There is no definite minimum or maximum
service life of the supplemental fuel system. The
best insurance for trouble-free service is the
proper installation of the system. Periodic
inspection should be made to determine system
component failure or leakage.
A. Supplemental Fuel Tank Inspection −
Fuselage External
(1). Inspect gravity fill port filler neck cap
for missing or damaged seal.
(2). Inspect fuel vent fairing for damage.
Inspect for obstruction of air flow.
Repair or replace as required.
(3). Inspect the exterior of fuselage beneath
the fuel cell for indications of fuel
leakage. No leaks allowed. Repair or
replace components as required.
B. Supplemental Fuel Tank Inspection −
Fuselage Internal
NOTE:
Perform Supplemental Fuel Tank Leak
Check/Pressure Test to determine if leaks
exist in the fuel system. If the pressure
test does not indicate leakage, a visual in
spection is not required.
Perform fuel tank inspection - internal
fuselage when floor panels are removed
for other maintenance.
(1). Defuel supplemental fuel tank (Ref.
Section 12-00-00).
(2). Remove baggage compartment center
floor A235 and right outboard panel
R250 (Ref. Section 53-20-00).
(3). Remove cabin floor LH aft access cover
AL230 (Ref. Section 53-20-00).
(4). Inspect elbow fitting at main fuel tank
vent/rollover valve mounting plate for
evidence of leakage. None allowed.
(5). Inspect fuel transfer hose for deteriora
tion, collapse, kinked, of loss of torque.
No damage allowed.
(6). Inspect fuel filler neck installation for
evidence of fuel leakage. Replace
components as required.
Aviation Turbine Fuel
System Contamination
(7). Inspect fuel tank access cover for
evidence of fuel leakage, electrical
bonding jumper for corrosion and
security. Repair as required.
(8). Inspect fuel vent tubes for cracks, dents,
nicks and corrosion. Hoses for cracks,
cuts, tears, punctures, and collapse. No
damage allowed. Inspect clamps and
attaching hardware for security. Repair
or replace as required.
(9). Inspect aft standpipe vent tubes,
attaching hardware, and flame arrestor
for cracks, dents, nicks and corrosion.
Inspect hoses for cracks, cuts, tears,
punctures, and collapse. No damage
allowed. Repair or replace as required.
(10). Remove fuel tank access cover.
(11). Inspect fuel vent float/rollover valve and
hardware for serviceable condition,
leakage, and corrosion. No damage
allowed. Repair or replace as required.
(12). Inspect electrical bonding jumpers,
hardware, and clamps for corrosion,
damage, and security. No damage
allowed. Repair or replace as required.
(13). Inspect fuel transfer hose for deteriora
tion, collapsed, kinked, or loss of torque.
No damage allowed.
(14). Inspect fuel transfer pump and attach
ing hardware for condition and security.
Repair or replace as required.
CAUTION
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