Diamond DA 40 Flight Manual page 110

Emergency
Procedures
(b) Alternator Failure
An alternator failure is indicated by an illuminated or flashing alternator warning light (ALT
or ALTERNATOR) on the annunciator panel and a flashing ammeter on the Vision
Microsystems VM 1000 engine instrument.
%
(i) Alternator Failure During Flight
1. Circuit breakers . . . . . . . . . . . . . . . . . . . . . . check; if all are OK, proceed
2. Electrical equipment . . . . . . . . . . . . . . . . . . . switch OFF all equipment
3. Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . check regularly
Those items of equipment which are not needed for the safe
operation and secure landing of the airplane can be switched
off with the Essential Bus switch (if installed). When the
essential bus is switched ON, only the following items of
equipment are supplied with power:
- NAV/COM 1.
- Transponder (XPDR).
- Flood light.
- Attitude gyro (artificial horizon).
- VM 1000 engine instrument.
- Annunciator panel.
- GPS (if installed).
- Landing light.
- Pitot heating system.
- Flaps.
CONTINUED
Page 3 - 36
CAUTION
Rev. 8 01-Dec-2010
DA 40 AFM
with step 2
which is not needed
Doc. # 6.01.01-E