AD 2011-21-51
Effective 11/01/2011 · Published 11/01/2011
Airworthiness Directives; Cessna Aircraft Company Airplanes
Summary
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 resulte…