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it is necessary to know the free air temperature,
(FAT), pressure altitude, (PA), and gross weight,
(GW).Enter the chart at known FAT, move right to known
PA, move down following the graph lines to known GW,
then move left and read maximum indicated airspeed.If
the cruise guide indicator is inoperative, two airspeed
limits must be determined and the lower limit used.One
is the structural limit based on GW; the other is based on
blade compressibility limit at lower temperatures.After
determining the structural limit, move up or down to the
dashed line representing FAT, then deflect left and read
airspeed.This airspeed should be increased for GW below
50,000 pounds.Go to the insert graph and enter it at
known GW.Move right to the sloping line, then deflect
down and read speed increase.To determine maximum
operating airspeed, add this value to that previously determined.
5-5-7. AFCS Limitations.
The airspeed limit when operating on single AFCS is
100 KIAS or Vne, whichever is slower.The helicopter
may be operated with both AFCS off up to 160 KIAS or
Vne, whichever is slower.
TM 1-1520-240-10
5-5-2
Figure 5-5-1. Airspeed Limitations — Inoperative Cruise Guide Indicator
TM 1-1520-240-10
5-5-3/(5-5-4 blank)
Figure 5-5-2. Airspeed Limitations — Longitudinal Cyclic Trim Retracted

TM 1-1520-240-10
5-6-1/(5-6-2 blank)
SECTION VI. MANEUVERING LIMITS
5-6-1. Aerobatics Prohibition
Aerobatics are prohibited with this helicopter. Aerobatics
is defined as intentional maneuvers beyond + 30
pitch
and/or 60
roll.
5-6-2. Bank Limitations
The following bank angle limits apply:
a. With an operative cruise guide indicator, bank
angles are limited by the cruise guide indicator, but no
greater than 60 degrees. When operating with altitude
hold, limit bank angle limits to 45 degrees maximum.
b. With an inoperative cruise guide indicator, use
the bank angle limits defined by fig. 5-6-1.
5-6-3. Landing Limitations.
a. The maximum ground speed for running landings
is 60 knots.
b. The maximum nose–up attitude during landings
is 20º.
5-6-4. Ground Operation Limitations.
a. To prevent droop stop pounding, when all the
landing gears are in contact with the ground and the
thrust is at ground detent flight control movements shall
not exceed the floowong from the neutral position:
Right or left
directional pedal .75 inches
Aft cyclic 2.00 inches
Lateral cyclic 1.00 inches
Thrust No lower than
ground detent
b. When ground taxiing less than 75 feet from an
obstruction, on an unimproved/unfamiliar airfield not
designated for CH-47D helicopters, a blade watcher and
taxi director shall be positioned as shown in figure 8-2-1.
If the airfield is designated for CH-47D helicopter and taxi
ways are in accordance with UFC 3-260-01, the above
does not apply.
Figure 5-6-1. Bank Angle Limitations

TM 1-1520-240-10
Change 1 5-7-1
SECTION VII. ENVIRONMENTAL RESTRICTIONS
5-7-1. Engine Inlet Screen Limitation.
Refer to table 5-7-1 for information on engine bypass
panel removal.
5-7-2. Flight Under Instrument Meteorological Conditions
(IMC).
This helicopter is qualified for flight instrument meterological
conditions provided the following conditions exist:
NOTE
Should one AFCS fail during IMC flight, the
flight may be continued to destination.
Should both AFCS fail during IMC flight, a
landing should be made as soon as practical.
a. Both AFCS are operational (ALT Hold and Heading
not required for IMC Flight).
b. Two vertical gyros and two vertical gyro indicators
(VGI) are installed and operative.
5-7-3. Flight in Ice.
NOTE
During flight in icing conditions with the EAPS
installed, the bypass doors must remain
closed.
Pitot tube and Advanced Flight Control Systems (AFCS)
yaw port heating, and windshield anti-icing systems enable
safe flight in light-icing conditions. The EAPS is
designed to permit safe flight in light-icing conditions.
Continuous flight in light-icing conditions below 5
C is
not recommended since blade damage can occur from
asymmetric ice shedding. Intentional flight into known
icing conditions with rotor blade erosion protection materials
installed is prohibited. Icing conditions include
“trace,” “light,” “moderate,” and “heavy.”
5-7-4. Thunderstorm Operation.
To ensure adequate lightning strike protection, the lightning
protection cables and straps must be installed and
intact on all rotor blades. If any lightning cables or straps
　
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