Bell OH-58A Technical Manual page 24

TM 55-1520-228-BD
GENERAL INFORMATION
1-7. WAIVER OF PRECAUTIONS. Under
combat conditions, BDAR may be performed
on helicopters which are in flight or
which are under power while on the
ground. While some of these BDAR actions
may require waiving of safety precautions,
the cautions to protect personnel life
should not be overlooked.
precautions may be waived at the discre-
tion of the commander.
be required in a chemically toxic environ-
ment or under other adverse
conditions with severe limitations in
personnel, facilities, equipment, and
materials. Performance of repair tasks
may be necessary while wearing protective
gear. Decontamination procedures are
described in FM 3-5.
1-8
OPERATING CHARACTERISTICS. This
manual covers expedient repairs for the
OH-58 helicopter and its components. It
is entirely possible that in a combat
situation, the helicopter having under-
gone one or more repairs may suffer
degradation of its normal operating
characteristics (e.g., reduced speed,
reduced load capability, reduced range,
etc.), and still be able to carry out
all or parts of an assigned mission.
The minimum functional combat capability
(MFCC) criteria for the OH-58 is as
follows:
a. Flight Capability for Mission
Completion. Helicopter's flight charac-
teristics degraded to a minimum of
combat capable (CC).
(1) Sufficient power delivered to
main and tail rotor to accommodate lift
capability for helicopter crew and cargo.
(2) No fuel leaks which will cur-
tail the intended length of flight.
(3) No degradation of any com-
ponent/system which will end in failure
and curtailment of intended mission.
1-4
Other similar
BDAR fixes may
battlefield
(4) Communications. Must have
intercom communications within aircraft
and at least two tactical receiver-
transmitter (R-T) units operating at
full capability.
NOTE
Criteria may be waived for
recovery or if the tactical
situation demands otherwise.
b. Flight Capability for
Self-Recovery Capability (SRC).
(1) Must have power delivered to
main and tail rotor at acceptable
limits.
(2) Maximum engine torque:
80% at 0 kts
64% at 16 kts
53% at 32 kts
50% at 50 kts
(3) Lift capability for crew
members. Unload unnecessary weight.
(4) Flight controls at minimum
function level acceptable for flight.
(5) Instruments/avionics as
required to meet mission needs.
(6) Maximum airspeed of 50 kts.
(7) Maximum flight duration of
2 hours. Consideration will be given
to minimize flight duration.
(8) Be prepared for emergency
procedures.
See TM 55-1520-228-10,
Chapter 9.