Airworthiness Directive · Amendment 39-16850 · Battery/charger
Cessna Aircraft Company Airplanes
This AD applies to Cessna Aircraft Company (Cessna) Model 525C airplanes, serial numbers 0001 through 0052, that:
(1) Have a lithium-ion battery, Cessna part number (P/N) 9914788-1, installed as the main aircraft battery; and
(2) are certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company (Cessna) Model 525C airplanes. This emergency AD was sent previously to all known U.S. owners and operators of these airplanes. This AD requires replacing certain lithium-ion batteries installed as the main aircraft battery with either a Ni-Cad or a lead acid battery. This AD was prompted by a report of a battery fire that resulted after an energized ground power unit was connected to one of the affected airplanes equipped with a lithium-ion battery as the main aircraft battery. We are issuing this AD to correct the unsafe condition on these products.
(1) Within the next 10 hours time-in-service after November 1, 2011 (the effective date of this AD) or within the next 7 days after November 1, 2011 (the effective date of this AD), whichever occurs first, replace the lithium-ion main aircraft battery, Cessna P/N 9914788-1, following Cessna Citation Service Bulletin SB525C-24-05, dated September 29, 2011.
(2) As of November 1, 2011 (the effective date of this AD), do not install a lithium-ion battery, Cessna P/N 9914788-1, on any of the affected airplanes.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
