NTSB Identification: WPR11LA378
14 CFR Part 91: General Aviation
Accident occurred Saturday, August 13, 2011 in Seattle, WA
Probable Cause Approval Date: 12/11/2013
Aircraft: CESSNA 210L, registration: N732FY
Injuries: 3 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot reported that, during final approach for landing, she lowered the flaps to 10 degrees and placed the landing gear lever to the “down” position. While the gear was coming down, the airplane lost all electrical power. The pilot stated that she thought the safest course of action would be to land in the grass between the runways because she did not think she had sufficient time to manually pump the landing gear down. She reported that, with the 10-degree flap setting, the airplane was a little faster than normal during the approach but that the gear-up landing was smooth. A postaccident examination of the airplane revealed that the battery was depleted. Maintenance personnel jacked up the airplane and successfully performed a landing gear retraction and extension with an auxiliary power unit connected. They then installed a shop battery and successfully completed normal retraction and emergency extensions.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

A loss of electrical power while on final approach due to a depleted battery, which resulted in an intentional gear-up emergency landing.

Full narrative available

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