Emergency and
Malfunction Procedures
CSP–520N–1
MD 520N (500N) ROTORCRAFT FLIGHT MANUAL
R
Original
3–25
FAA Approved
3–14. ELECTRICAL SYSTEM MALFUNCTIONS
BATTERY OVERTEMPERATURE
Indications:
Red
BAT
TEMP
160
°
indicator ON.
Conditions:
Battery overtemperature at 160
°
FG(71
°
C) or above.
Procedures:
F
Battery switch: OFF.
NOTE
:
The battery hi–temp relay removes the battery from the DC electrical bus when
battery temperature reaches 160
°
F.
F
Land as soon as possible
NOTE
:
No further flights are authorized until battery is inspected and cause of overtemp
corrected.
Indications:
Yellow
BAT
TEMP
140
°
indicator ON.
Conditions:
Battery overtemperature at 140
°
F (60
°
C).
Procedures:
F
Battery switch: OFF
F
Battery must remain off line during remainder of flight.
NOTE
:
The Yellow BAT TEMP 140
°
F light will go out after the battery has cooled to
below 140
°
F (60
°
C).
No further flights are authorized until battery is inspected and cause of overtemp
corrected.
