Diamond DA 42 NG, Maintenance Manual

Page: 645 / 2339

AIRCRAFT
DA 42 NG AMM Electrical Power
Doc # 7.02.15
Rev. 4
24-32-00
Page 1
15 Mar 2018
Section 24-32
Emergency Power
1. General
This Section tells you about the emergency battery system for the DA 42 NG airplane. Regular
maintenance of the emergency battery system is necessary. Figure 1 shows the main components of
the emergency power system.
Refer to Chapter 92 for the wiring diagrams.
2. Description
The emergency battery system consists of:
)
An emergency battery pack.
)
A sealed HORIZON EMERGENCY switch.
The emergency battery pack consists of 10 lithium manganese batteries, 3 V, 1,300 mAh. Refer to the
Equipment List in Section 6.5 of the Airplane Flight Manual for the approved battery pack type.
The emergency battery pack is mounted behind the instrument panel, on the pilot's side.
When all other sources of electrical power fail during flight, the EMERGENCY HORIZON switch on the
top of the instrument panel is set to ON to use the emergency battery. It supplies the backup attitude
gyro (horizon), or standby attitude module (if OÄM 42-270 is installed) and the flood light with power
for at least 1 hour and 30 minutes.