FAA Issues Airworthiness Directive for Citation CJ4
The FAA has issued an airworthiness directive for the Cessna 525C Citation CJ4.

The FAA has issued an airworthiness directive for the Cessna 525C Citation CJ4. An Oct. 6, 2011 Emergency AD (#2011-21-51) required replacing the lithium-ion main aircraft battery with a Ni-Cad or a lead-acid battery. The current action was prompted by a report of a battery fire that started after an energized ground power unit was connected to a CJ4 equipped with a lithium-ion battery, Cessna P/N 9914788-1, as the main aircraft battery.