HEADQUARTERS OH-58A, Техническое руководство

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2. LAND AS SOON AS POSSIBLE.
3. EMER SHUTDOWN after landing.
If high DC amperage indication does not dissipate, pilot
should anticipate electrical fi re in fl ight.
9-35. HYDRAULIC SYSTEM MALFUNCTION.
9-36. HYDRAULIC POWER FAILURE. Hydraulic
power failure will be evident when the force required
for control movement increases; a moderate feedback
in the cyclic and collective controls is felt and the HYD
PRESS caution light illuminates. Control movements
will result in normal aircraft response in every respect.
In the event of hydraulic power failure:
1. Airspeed – Adjust as necessary to attain
the most comfortable level of control
movements.
2. HYD BOOST SOL circuit breaker – Out;
check for restoration of hydraulic power.
If hydraulic power is not restored:
3. HYD BOOST SOL circuit breaker – In.
4. HYD BOOST switch – OFF.
Do not return the HYD BOOST switch to the
ON position for the remainder of the fl ight. This
prevents any possibility of a surge in hydraulic
pressure and the resulting loss of control.
5. LAND AS SOON AS PRACTICABLE at an
area that will permit a run-on landing.
9-37. LANDING AND DITCHING.
9-38. LANDING IN TREES. A landing in trees
should be made when no other landing area is avail-
able. In addition to accomplishing engine malfunction
emergency procedures, select a landing area con-
taining the least number of trees of minimum height.
Decelerate to minimum forward speed at treetop level
and descend into the trees vertically. Apply all the
remaining collective, prior to the main rotor blades
entering the trees.
9-39. DITCHING – POWER ON. If ditching be-
comes necessary, with power available accomplish an
approach to a hover above the water and:
1. Doors – Jettison at a hover.
2. Crew (except pilot) and passengers – Exit.
3. Hover a safe distance away from
personnel.
4. AUTOROTATE. Apply all remaining
collective as the helicopter enters the
water. Maintain a level attitude as the
helicopter sinks and until it begins to roll,
then apply cyclic in direction of the roll.
5. Pilot – Exit when the main rotor stops.
9-40. DITCHING – POWER OFF. If an engine failure
occurs over water and ditching is imminent, accomplish
engine failure emergency procedures and proceed as
follows:
1. AUTOROTATE. Decelerate to minimum
forward speed as the helicopter nears the
water. Apply all remaining collective as
the helicopter enters the water. Maintain a
level attitude as the helicopter sinks and
until it beings to roll, then apply cyclic in
the direction of the roll.
2. Doors – Jettison.
3. Crew and passengers – Exit when the
main rotor stops.
9-41. FLIGHT CONTROL MALFUNC-
TIONS. Failure of components within the fl ight
control system may be indicated through varying
degrees of feedback, binding, resistance, or sloppi-
ness. These conditions should not be mistaken for
hydraulic power failure. In the event of a fl ight control
malfunction:
1. LAND AS SOON AS POSSIBLE.
2. EMER SHUTDOWN after landing.
9-42. LIGHTNING STRIKE.
LAND AS SOON AS POSSIBLE.
9-43. IN-FLIGHT WIRE STRIKE.
LAND AS SOON AS POSSIBLE.
Change 14 9-11
TM 55-1520-228-10