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Vmax . . . . . . . Maximum Airspeed Limit
(Indicator Red Line)
Vne . . . . . . . . . Velocity (Airspeed) Never Exceed
VOL . . . . . . . . Volume
VOR . . . . . . . . Very High Frequency Omni-Direc
tional Range
ABBREVIATION TERM
VSI . . . . . . . . . Vertical Speed Indicator
W . . . . . . . . . . . West or Wide
WARN . . . . . . Warning
WB . . . . . . . . . Wide Band
WL . . . . . . . . . Water Line
WOD . . . . . . . Word of Day
WSHLD or
W/S . . . . . . . . . Windshield
WT . . . . . . . . . Weight
X . . . . . . . . . . . Times or By
XFEED . . . . . . Crossfeed
XFER . . . . . . . Transfer
XMIT . . . . . . . . Transmit
XMSN . . . . . . . Transmission
XTK/TKE . . . . Cross Track/Track Angle Error

. . . . . . . . . . . Degrees or Temperature

C . . . . . . . . . . Degrees Celsius

/KTS . . . . . . . Degrees per Knots
% . . . . . . . . . . . Percent
3/REV . . . . . . . Three Vibrations for Each Revolu
tion of the Rotor
TM 1-1520-240-10
C-1
APPENDIX C
CONDITIONAL INSPECTIONS
This appendix contains those conditions which require a write-up in DA Form 2408-13-1. An entry shall state the limit
(s) exceeded, range, timeabove limits, and any additional data that would maintenance personnel in maintenance
action that may be required.
CONDITION 2408-13-1 ENTRY REQUIRED REMARKS
Water landings have been performed.
Comment
Salt water landings. Comment
Landing in mud or swampy terrain or
difficulty in starting or torching of the
cabin heater.
Comment
Landing gear wheels have been
submerged in water or mud.
Comment
Helicopter has been washed or
subjected to heavy rain.
Comment
Helicopter is operated within 200
miles of volcanic activity.
Comment
Helicopter is operated within 10
miles of salt water or 1000 feet of it’s
surface.
Comment
Whenever the aircraft is flown with a
DECU fault code other than “88”.
Codes(s) and when recognized. Refer to the DECU Fault Code List/
Matrix in Chapter 2.
Whenever the -714A engine is shutdown
via the Fire Pull Handle or an
engine failure occurs.
Comment
Fuel vents overboard or uneven
tank depletion rate occurs from an
auxiliaryfuel tank during normal operation.
Comment
Fuel vents overboard from a main
fuel tank during normal during normal
flight operations.
Comment
Whenever emergency fuel is used. Type of fuel, additives, and duration
of operation.
Operation with emergency fuel
should not exceed 6 hours cumulative
time.
When aircraft is fueled with JP8 fuel
containing +100 additive.
Amount of fuel and tanks affected. Operate aircraft without restrictions,
considered +100 additive free after
refueling with 3 full useable fuel
loads of JP8. Contact: USAPC, Mr.
Del Leese, DSN 977-8580.
Helicopter has been subjected to a
hard landing or when emergency
lightsare actuated during landing.
Comment
When two different types of oil are
mixed in either engine.
Comment Respective engine oil shall be
changed and the system flushed
within 6 hours of engine
operation.
TM 1-1520-240-10
C-2
CONDITION 2408-13-1 ENTRY REQUIRED REMARKS
Engine oil consumption exceeds 2
quarts per hour.
Comment
Engine is subjected to sudden stoppage
or a sudden reduction in RPM.
Comment
Engine compressor stall (surge) is
experienced.
Comment
712 Each time emergency power indicator
is tripped.
Comment
Emergency power reaches 30 minute
cumulative time.
Comment
When starting or beeping engines, if
loud noises or shocks are followed
by sudden high increases in engine
torque, or if a torquemeter is stationary
at high value after shutdown.
Comment Do not restart affected engine.
When starting engines, if either engine
fails to accelerate to flight
speed
Comment
When CO2 is applied to engine inlet
or exhaust.
Comment
When torquemeter is stationary at a
high value after shutdown.
Comment
When the transmission filter bypass
button is extended.
Comment
When a transmission is suspected
of excessive oil leakage.
Comment
When a transmission oil system has
been contaminated with hydraulic
fluid.
Comment
When two different types of oil are
mixed in the forward, combining, aft,
or engine transmissions.
Comment Respective transmission oil shall be
changed and the system flushed
　
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