TM 1-1520-240-10
5-4-1/(5-4-2 blank)
SECTION IV. LOADING LIMITS
5-4-1. Center -of-Gravity Limitations.
See fig 6-7-1 for center-of-gravity (CG) limits in terms of
gross weight (GW) and arm-inches (fuselage stations).
5-4-2. Maximum Gross Weight.
The maximum allowable operating gross weight is
50,000 pounds.
5-4-3. Cargo Hook Limitations. The limits presented
below are structural limitations only.
a. The structural limit of the forward and aft hook is
17,000 pounds each.
b. The maximum single load that can be suspended
as a tandem load from the forward and aft hooks is
25, 000 pounds.
c. The center cargo hook is limited to a maximum
load of 26,000 pounds.
d. When combination of internal and external loads
are carried during the same flight and the external load
exceeds 12,000 pounds, position the internal load forward
of the utility hatch. This procedure will preclude
encountering an excessively aft CG.
5-4-4. Winch/ Rescue Hoist Limitations.
a. The winch shall not exceed:
(1) 3,000 pounds straight line pull.
(2) 6,000 pounds, one pulley.
(3) 9,000 pounds, two pulleys.
(4) 12,000 pounds, three pulleys.
b. The rescue hoist is limited to a maximum load of
600 pounds.
c. Refer to Chapter 4 for system configuration and
operation.
TM 1-1520-240-10
Change 3 5-5-1
SECTION V. AIRSPEED LIMITS
5-5-1. Airspeed Operating Limits.
Any excursion into the red band of the cruise guide indicator
for more than 45 seconds requires an entry on the
DA Form 2408-13-1. Provide the following information:
aircraft gross weight, TAT, pressure altitude, total time in
the red zone, and needle position within the red zone (i.e.
lower half or upper half).
5-5-2. Airspeed Limitations With An Inoperative
Cruise Guide Indicator.
The airspeed operating limits chart, fig. 5-5-1, shows the
maximum allowable airspeeds with an inoperative cruise
guide indicator.
5-5-3. Airspeed Limitations With An Operative or Inoperative
Cruise Guide Indicator.
The following limitations apply with an operative or inoperative
cruise guide indicator.
a. Maximum airspeed in sideward flight is 45 knots.
b. Maximum airspeed in rearward flight is 45 knots.
c. Maximum crosswind or tailwind for hover is 45
knots.
d. Maximum airspeed with the lower section of the
cabin entrance door open and locked is 60 KIAS.
e. The rescue hatch door shall not be opened or
closed above 90 KIAS.
f. The windshield wipers shall be off at airspeeds
above 130 knots.
g. Upper section of the cabin entrance—assure that
airspeed is less than 100 KIAS before closing door in
flight.
5-5-4. External Cargo Airspeed Limits.
If a sling or hook should fail while carrying a tandem load,
limit airspeed to a maximum of 60 KIAS.
5-5-5. Longitudinal Cyclic Trim (LCT) Actuator Airspeed
Limits.
The airspeed operating limits chart, fig. 5-5-2, shows the
maximum allowable airspeeds with either LCT, fully retracted.
Do not manually extend the LCT beyond the
GND position on the cyclic trim indicators at indicated
airspeeds below 60 knots.Use of extended cyclic trim at
low airspeeds will result in high aft rotor blade stresses.
5-5-6. Use of Airspeed Limitations Chart.
The use of these charts is illustrated by the example on
each chart.To determine the maximum operating airspeed,
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