TO 00-25-172 - Robins Air Force Base

TO 00-25-172
Table 6-1.
Cla-Val Model 850 Pantograph
Hot Refueling System Safety Engineering Analyses - Continued
System
Notes
1
Must use only the aft filler port. The forward port is too close to the propeller. Users must make sure that center-ofgravity
limitations are not exceeded when refueling only the aft tank.
2
Fuel service includes CH-53 Auxiliary Tanks with Fuel Transfer by US Army FARE system.
3
When refueling from an R-11 truck, the truck rotor separation distance can be reduced from 25 feet to 20 feet.
4
R-9 fuel servicing trucks equipped with deadman controls are approved for H-3 hot refueling when using a reduced
pumping pressure of 25 psi or less.
5
R-9 fuel servicing trucks equipped with deadman controls are approved for H-53 hot refueling.
6
Hot refueling of the Internal Auxiliary Fuel Tank System (IAFTS) or the aircraft using the open port/over-the-wing
method is not authorized.
7
Hot refueling operations are no longer authorized when using MIL-DTL-6615G refueling hose and/or SAE AS 38404
hose end couplers. Approved replacement hose to continue these operations is API/IP STD 1529, Grade 2/3, Type C,
aviation fueling hose. Approved coupling replacements are internally expanded non-reusable hose end couplings
meeting the design and performance specifications of API/IP STD 1529. (Exception to this requirement is hot refueling
of E-4B aircraft due to distance between operating aircraft engine and single point refueling (SPR) receptacle
locations.)
*
Aircraft Rapid Refueling Facility (Oasis) located at Ft. Drum NY is approved for use.
8
Position the GRU-17/E so that no portion of the pantograph is forward of any aircraft engine inlet during hot refueling
of any aircraft (except A-10 where it can be under the wing).
**
Approved for use when equipped with minimum API/IP STD 1529, Type C, Grade 2, hardwall aviation servicing hose
assemblies with internally expanded forged brass or bar stock body couplings and brass or 300 Series stainless steel
serrated ferrules, respectively.
9
Must be equipped with a modified CLA-VAL rate-of-flow control valve to act as a hydraulic deadman.
***
Approved for use with any Meyerinck, Cla-Val, OPW, Emco-Wheaton or Nova Group pantograph.
10
Refueling hose pressure cannot exceed 25 psi.
6.8 HOT REFUELING EQUIPMENT OPERATOR
(REO).
The REO (2F0X1) will assume a position at the refueling
equipment and will observe the pressure gauges plus the hot
pad and aircraft refueling supervisors and be constantly alert
for a malfunction. Should a malfunction occur, the REO shall
immediately shut down the fueling operation.
NOTE
For Panero Type I hydrant systems (with installed
gauges, valves and meter only), the REO will
monitor lateral control pit pressure gauges and
crew chief will monitor pantograph.
6.9 HOT REFUELING SEQUENCE.
a. Fuel servicing equipment may be pre-positioned at hot
refueling locations prior to arrival of the aircraft. Aircraft
will not be hot refueled if the fuel jettison (dump)
system was used on the previous flight unless it can be
positively verified that the jettison valve(s) closed after
the fuel jettison operation. Verification can be accomplished
by observing cockpit indications (provided they
show the true status of the jettison valves) or by physically
observing the fuel to stop exiting the jettison outlet(s)
upon termination of the jettison operation. If neither
of these verification actions can be done, then the
6-6