Mid-Continent Instruments, Wichita, KS
Rev B May 25, 2004 Manual Number 9015762 Page 21 of 21
3.6 EQUIPMENT
LIMITATIONS
The 4300-4XX series Electric Attitude Indicator is not to be used as a reference for aerobatic
flight. It is recommended to turn off the Attitude Indicator (red flag showing) at least 5 minutes
before aerobatic maneuvers are initiated.
The Mid-Continent 9015607 battery pack is part of a complete system. When remote mounted,
the 9015607 battery pack MUST be installed with the Mid-Continent 4300-4XX series Electric
Attitude Indicator in order to be approved as a complete TSO’d system.
This battery is not
FAA approved if installed or used in any other way.
Actual operation time on the battery may vary considerably depending on temperature, charge
status, and battery condition. Low temperatures will temporarily degrade battery capacity as
shown in Fig. 2.6. Internal chemistry will slowly degrade battery capacity over several years of
operation as shown in Fig 2.7, even when correctly maintained. A poorly maintained battery will
suffer accelerated degradation in excess of the guidelines given in this document. Extended
storage in a discharged state or at high ambient temperatures, and over-charging will all
permanently damage a battery. Complete charging is required to bring the battery up to full
capacity if it has been stored for more than four months or if it has been partially discharged.
0
20
40
60
80
100
-20
-10
0
10
20
30
40
50
Temperature (°C)
Capacity (%)
Fig. 2.6:
Effect of Low Temperature
On Standby Battery Capacity
Fig. 2.7: Life Characteristics
In Standby Use
