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Mid-Continent Instruments and Avionics, Wichita, KS
REV. B, October 31, 2012
43
Manual Number 9017782
SECTION 5
CONFORMANCE
5.1
INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
5.1.1
PRESSURE SYSTEM AND ALTIMETER VERIFICATION
Per federal regulation 14 CFR 91.411, it is required that each static pressure system and each
altimeter have been tested and inspected within the last twenty-four (24) months.
5.1.2
SOFTWARE UPGRADES
Mid-Continent will have, on occasion the need to update software versions on the MD302 for
maintenance, improvements and/or the addition of functionality.
With the MD302’s easy field-upgrade option, the unit does not have to be returned to the factory,
and in some cases, may not have to be removed from the panel.
Prepare the new software by loading it onto a USB memory device. It is recommended, but not
necessary, that the USB device have no additional files on it. Loosen the screw on the back of the
unit and insert the USB device. By following the procedures in Section 4.5.1, you can load your
software into the MD302. Note the software version before and after this procedure which comes
up on the initial Preflight screen.
5.1.3
BATTERY REPLACEMENT
There should be no regularly schedule maintenance of the True Blue Power Nanophosphate
®
lithium-ion battery. The battery will recharge itself from aircraft power while in normal mode. A
battery capacity check occurs each time the unit is powered on. If the battery capacity is
determined to be more than 80%, no message is displayed and the battery is good.
If a unit has a battery pack warning, and the warning persists more than once in a short time, it
can be replaced in the field with minimal effort. By removing two small screws on the rear of the
unit, the battery cover comes off, and the battery is accessible. Pull the battery out using the
handle/strain relief built onto the battery. Replace with a new battery, verify operation and go.
5.1.4
TROUBLESHOOTING
The following Figures and associated descriptions represent warnings or errors and describe the
typical reasons and appropriate response action.
FIGURE 5.1
The attitude display has failed due to exceedance of interal rate
sensors, loss of airspeed or other various reasons. This will
typically self-correct. However, if it does not, immediately have
the unit serviced.