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Fri, Oct 07, 2011

FAA Issues Emergency AD For Cessna 525C Airplanes

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.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/080BD795526AD68486257921004DE2B9?OpenDocument

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