Cessna 402 N322HA accident near Fort Lauderdale, Florida

Probable cause

The failure of the left starter relay, which resulted in a loss of electrical power during the flight and the failure of the T-handle from the cable led to a forced landing with the landing gear retracted.

NTSB analysis

About 20 minutes into the flight, the airplane experienced a total electrical failure. The pilot maneuvered the airplane in circles while attempting to troubleshoot the problem and perform emergency checklists. Despite his efforts, power was not restored, and the electrically actuated hydraulic landing gear would not extend. The pilot attempted to extend the landing gear using the emergency extension system, but when he pulled the T-handle, it broke off from its housing, separating it from the cable. After additional troubleshooting attempts on the electrical system, the pilot chose to land at a nearby airport, and the airplane landed on the runway with the landing gear retracted, which resulted in substantial damage to the fuselage. A mechanic who performed a postaccident examination of the airplane stated that the left starter motor and starter relay/solenoid had electrical shorts. Additionally, the starter relay remained in the closed position, which likely resulted in the airplane drawing a greater electrical load and draining the battery, leading to a complete loss of power.

The emergency extension T-handle was not examined after the accident. However, based on the pilot’s account of the handle breaking off when he attempted to use the emergency extension system, it is likely this prevented the manual extension of the landing gear, which resulted in the forced landing with the landing gear retracted.

Text from the NTSB. Open the NTSB docket for WPR18LA209 for the full record.