Alternator Failure - Mooney M20V Acclaim Ultra Pilot Operating Handbook

SECTION III
EMERGENCY PROCEDURES

ALTERNATOR FAILURE

If the Main Alternator fails, indicated by the Master Warning "ALT VOLTS" flashing:
Perform the Standby Alternator Emergency Checklist (repeated below)
1. Push the "Stdby Alt/Emergency Bus" switch ON. (This activates the emergency bus circuitry &
Standby Alternator system) Verify:
a.) The AMBER "EMERG BUS" annunciator illuminates, and
b.) The RED "ALT VOLTS" flashing annunciator extinguishes.
The most efficient operating RPM is 2500 RPM when operating on the Standby
2. All electrical systems will remain powered and functional.
3. If the RED "ALT VOLTS" annunciator remains flashing, then:
If the RED "ALT VOLTS" annunciation remains flashing, then the standby alternator
has failed, and only main battery power remains.
4. Reduce the electrical load by pulling the "BAT" circuit breaker. This load sheds the non- es-
sential bus. The following systems remain powered by the essential bus:
If the autopilot is engaged, when the BAT circuit breaker is pulled, the autopilot will
ALT SENSE
S
EMER ALT BUS
S
ALT FIELD
S
EMER ALT FIELD
S
ALT OUT
S
STBY ALT
S
BAT
S
AUX PANEL
S
AUX OVHD
S
GLARESHIELD LIGHT
S
PFD
S
MFD
S
AHRS
S
ADC
S
ENGINE INST
S
STBY GYRO
S
ICE PROT SYS (If Installed)
S
STBY BUS BAT
S
COM 1
S
NAV 1 / GPS 1
S
AUDIO
S
XPONDR
S
STALL WARN
S
ICE LITE (If Installed)
S
PITOT HEAT
S
AIRPLANE FLIGHT MANUAL
3 - 24
-NOTE-
Alternator System.
-CAUTION-
-CAUTION-
disconnect without annunciation.
MOONEY
M20V ACCLAIM ULTRA
ORIGINAL ISSUE - 03-16-2017
Revision A: 08-18-2017