AIRCRAFT FLIGHT
MANUAL
BRISTELL B23
Document No.: ADXC-73-001-AFM
Approved page
Revision: A2
3-13
Date of Issue: 15.04.2021
3.8.6
Bus system failure
The B23 electric bus system features two main sections Pilot/ALT1 (with
the Avionic Sub-Bus) and Batt/ALT 2. They are connected via the BUS-
TIE circuit breaker
Both sides of the system provide a set of functions enabling safe flight
and landing. See table in Section 7.11 Electrical system.
Upon complete loss of electric power
1. Back up switch
-
engage
2. Master switch
-
OFF
3. Alt1 switch
-
OFF
4. Alt2 switch
-
OFF
5. BUS TIE CB
-
PULL
6. BATT CB
-
PULL
7. ALT1 CB
-
PULL
8. ALT2 CB
-
PULL
Individually check BATT/ALT1/ALT2 by setting the respective CB and
associated control in operational mode to locate the malfunction.
Continue flight on the reminder of electric power sources
Land as soon as practical.
3.8.7
Overvoltage
Overvoltage more than 15 Volts
1. Reduce engine RPM (propeller and power)
2. Alternators
-
Check ALT-1 and ALT-2 to
identify which alternator causes
the problem. Keep that one off for
the reminder of the flight
3. If positive charge (Amps) cannot be maintained on one alternator:
Consider use of back-up battery
see 3.8.5
-
Land as soon as practical.
3.8.8
Inadvertent icing encounter
WARNING
Operation under known icing conditions is PROHIBITED!
1. Pitot heat
-
ON