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ASN Wikibase Occurrence # 154697
Last updated: 16 May 2021
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Date:31-MAR-2013
Time:12:50
Type:Silhouette image of generic COL3 model; specific model in this crash may look slightly different
Lancair LC42-550FG Columbia 350
Owner/operator:Private
Registration: N6506L
MSN: 42003
Fatalities:Fatalities: 2 / Occupants: 2
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Kearns Avenue, Winston-Salem, NC -   United States of America
Phase: En route
Nature:Private
Departure airport:Wilkes County, NC (UKF)
Destination airport:Warren Field, NC (OCW)
Investigating agency: NTSB
Narrative:
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.

Probable Cause: The pilot's failure to detect multiple indications and cues in the cockpit of the steady loss of engine oil pressure, which resulted in a catastrophic engine failure over terrain unsuitable for landing. Also causal was the loss of internal engine lubrication for reasons that could not be determined during postaccident examinations due to postcrash fire damage.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20130331X44346&key=1
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=6506L

https://flightaware.com/live/flight/N6506L

Location


Revision history:

Date/timeContributorUpdates
31-Mar-2013 14:32 gerard57 Added
31-Mar-2013 22:17 Geno Updated [Time, Aircraft type, Registration, Cn, Location, Departure airport, Destination airport, Source, Narrative]
31-Mar-2013 22:20 Geno Updated [Other fatalities, Source]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
28-Nov-2017 14:15 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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