TM 55-1520-228-BD
CHAPTER 13
FLIGHT CONTROLS
BDAR FIXES SHALL BE USED ONLY IN COMB
AT OR FOR TRAINING
AT THE DISCRETION OF THE COMMANDER.
(AUTHORIZED TRAINING FIXES ARE LISTED IN APPENDIX E.)
IN EITHER CASE, DAMAGES SHALL BE REPAIRED BY STANDARD
PROCEDURES AS SOON AS PRACTICABLE.
Section I. INTRODUCTION
13-1. GENERAL.
and tail rotor controls to the aft
flight control components. Refer to
a. The flight control system is made
Figure 13-1 for a schematic of the
up of the main rotor collective controls,
system.
cyclic controls, and the tail rotor con-
trols.
The tail rotor pedals are con-
13-2. ASSESSMENT PROCEDURES. Refer to
nected to the tail rotor assembly.
Table 13-1.
b.
This chapter contains some BDAR
13-3. REPAIR PROCEDURE INDEX.
procedures which may be used to
accomplish repairs to the flight control
tubes.
Flight control tubes connect the
copilot’s and pilot’s cyclic, collective,
Tubes,
Section II. TUBES, FLIGHT
13-4. SUBSYSTEMS AND ASSEMBLIES. There
are various subsystems and assemblies
within the flight control system that
are vital for combat aircraft maneuvera-
bility and control but are not neces-
sarily essential for basic flight capa-
bilities. Refer to Table 13-1 for
assessment procedures.
a. Force Trim System. If the force
trim system is malfunctioning, the
aircraft is still fully mission capable
with no limitations presented.
b.
Control Rods.
(1) Copilot to Pilot. If any
control rods, bell-cranks, or linkages
connecting the copilot controls to the
pilot controls break or otherwise become
inoperable, the pilot may assume full
control for the particular function
which has been damaged, provided that
the damaged part does not become jammed
in the surrounding aircraft structure.
Once the
PARA.
Flight Control. . . . 13-5
CONTROL
aircraft is on the ground, if
no replacement parts are available, the
control tube may be splice-repaired
(refer to paragraph 13-4) or removed to
avoid any possibility of the control
tube getting jammed. If the tube is
removed, the pilot assumes full control
of the function that has been lost to
the copilot.
(2) If any flight control systems,
including control rods, bell-cranks,
linkages, hydraulic cylinders, etc.,
which lie between the pilot and the main
rotor blade or tail rotor blade sustain
damage during flight, the aircraft will
be uncontrollable and forced to crash
land.
13-5. TUBES, FLIGHT CONTROL.
GENERAL INFORMATION: The following
repair procedures may be used to
accomplish repairs to flight control
tubes.
Flight control tubes connect the
13-1
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