Unicom
April 2006 Issue
Unicom: 04/06
Battery Maintenance
With reference to “It’s Not A River In Egypt” (Learning Experiences, January 2006), I do not agree with the crew’s judgment to fly the airplane with a known problem. The Baron’s batteries were in such a low state of charge they would not crank the engines.
External power should never be used when the internal battery power isn’t sufficient to start the engine(s). Dead batteries require three to four hours to recharge fully from the aircraft generating system. Therefore they are not considered airworthy in a discharged state.
Batteries that have enough power to crank and start the engine(s) will generally recharge to a reasonable state of charge prior t...
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