Flight History
The aircraft was on a return flight to San Jose and subsequently began a descent and approach to Long Beach Airport. The flight was conducted at night in visual meteorological conditions, and the airport was unfamiliar to the pilots.
Sequence of Failures
During the approach, the two pilots experienced a series of mechanical failures in succession. The failures included a malfunction of the turbocharger system, loss of an alternator, loss of engine oil pressure, an unsafe landing gear indication, and an in-flight fire. The fire was followed by a loss of engine power during a circling approach.
Crash
After making a flyby of the control tower to confirm the landing gear position, the aircraft crashed onto the southbound lanes of the San Diego Freeway at Long Beach.
Investigation Findings
An investigation into the accident revealed several maintenance-related issues. These included an improperly installed turbocharger, a cracked manifold exhaust, a burned main power lead, a separated cylinder, and a low fluid level in the hydraulic reservoir.
Previous Incidents
Two years prior to this accident, the instructor pilot made an unintentional gear-up landing in another aircraft. Additionally, one year prior to the accident, the Federal Aviation Administration revoked the mechanic's inspection authorization.