Fri, Oct 07, 2011
Battery Fire Prompted The Quick Measure
The FAA has issues an emergency AD (2011-21-51) for Cessna 525
airplanes. The action was prompted 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, Cessna part number (P/N) 9914788-1, as the
main aircraft battery. This condition, if not corrected, could
result in an aircraft fire.
The FAA says it has reviewed Cessna Citation Service Bulletin
SB525C-24-05, dated September 29, 2011. The service information
describes procedures for replacing lithium-ion main aircraft
batteries, Cessna P/N 9914788-1, with Ni-Cad or lead acid
batteries. The agency is issuing this AD following evaluation of
all the relevant information and determined the unsafe condition
described previously is likely to exist or develop in other
products of the same type design. The AD requires accomplishing the
actions specified in the service information described
previously.
Within the next 10 hours time-in-service after the effective
date of this AD or within the next 7 days after the effective date
of this AD, whichever occurs first, replace the lithium-ion main
aircraft battery, P/N 9914788-1, following Cessna Citation Service
Bulletin SB525C-24-05, dated September 29, 2011. As of the
effective date of this AD, do not install a lithium-ion battery,
P/N 9914788-1, on any of the affected airplanes.
Special flight permits under 14 CFR 39.23 are allowed with the
following limitation: “Single and non-revenue flights
only.” The emergency AD is effective upon receipt.
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