Mechanical & Engine Failure · NTSB ERA13FA184
LANCAIR LC42 - 550FG — Winston-Salem, NC
| Date | March 31, 2013 |
| Location | Winston-Salem, NC |
| Aircraft | LANCAIR LC42 - 550FG |
| Purpose of flight | Personal |
| Conditions | Day · Instrument Meteorological Cond |
| Phase / occurrence | Emergency descent Off-field or emergency landing |
| Pilot age | 56 |
| Pilot total time | 964 hrs · Building experience |
| Time in type | 292 hrs |
| Fatalities | 2 |
Probable cause
NTSB findings
- Aircraft-Aircraft power plant-Engine (reciprocating)-Recip eng oil sys-Failure - C
- Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
- Personnel issues-Action/decision-Info processing/decision-Identification/recognition-Pilot - C
- Personnel issues-Action/decision-Action-Lack of action-Pilot - C
What happened
The airplane was in cruise flight about 5,000 feet mean sea level (msl) in instrument meteorological conditions when the pilot declared an emergency and reported a loss of "fuel pressure" and engine power. The air traffic controller vectored the airplane toward the nearest airport, and, during the descent and when the airplane was about 6 miles from the airport, the pilot reported that smoke was in the cockpit and that the engine was "barely" producing power. No further transmissions were received from the pilot. The airplane collided with flat, wooded terrain and was significantly damaged by postcrash fire.
Data downloaded from the primary and multifunction cockpit displays indicate that the engine began steadily losing oil pressure during the airplane's initial climb until it leveled off at a cruise altitude of 5,000 feet msl. Data suggest that, at that time, the pilot leaned the fuel mixture for cruise flight. Although the pilot could have detected the decreasing oil pressure at that time, he did not report a loss of fuel pressure and engine power to the air traffic controller until about 6 minutes later. Data also indicate that there were multiple additional indications and cues of a loss of engine oil pressure in the cockpit but that the pilot did not respond to these in a timely manner. The operations manual indicates that the pilot should land as soon as possible if the engine oil pressure drops and then to prepare for a loss of engine power and an emergency landing. The pilot's delayed recognition of the drop in engine oil pressure was likely the result of a breakdown in her instrument scan, specifically, her systems monitoring during the climb and initial cruise phases of flight, during which time, her attention was likely directed at airplane control, power management, and navigation. The reason for the loss of engine oil pressure could not be determined during postaccident examinations due to postcrash fire damage.