ASN Wikibase Occurrence # 227499
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| Date: | Monday 22 July 2019 |
| Time: | 12:00 LT |
| Type: |  Cessna 172G Skyhawk |
| Owner/operator: | Outlaw Aviation LLC |
| Registration: | N3761L |
| MSN: | 17253930 |
| Year of manufacture: | 1965 |
| Total airframe hrs: | 4412 hours |
| Engine model: | Continental O-300-D |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | S of Madras Municipal Airport, OR (MDJ/S33), OR -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Sisters, OR (6K5) |
| Sisters, OR (6K5) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and her student departed on a local instructional flight. After completing a touch-and-go maneuver at a nearby airport, the student configured the airplane for a normal landing. The instructor's attention was focused outside the cockpit as she watched for an incoming airplane while her student flew the airplane. While setting up for the approach, the student configured the airplane by applying carburetor heat and retarding the throttle. After the student turned on to final approach, she noticed the engine speed reduce to 1,000 rpm without any intervention. She slowly advanced the throttle but was unable to maintain altitude. The flight instructor then took control of the airplane and determined that they had lost partial engine power. The airplane subsequently impacted the ground hard and came to rest.
A postaccident examination of the airplane revealed a small obstruction in the left-wing vent line, which is not likely to have obstructed fuel flow as the obstruction was not in the fuel lines and fuel was being fed to the engine from both tanks at the time of the accident. The engine was nearly 1,400 hours beyond the manufacturer's recommended time before overhaul but did not show any preimpact anomalies during testing.
Weather data indicated that the airplane was operating in conditions conducive to carburetor icing at the time of the accident and may have been more susceptible to icing because the engine was being fueled by automotive gasoline. However, the cause of the loss of engine power could not be determined as the student pilot applied carburetor heat before the power loss and postaccident testing did not reveal any anomalies with the airplane or engine.
Probable Cause: A partial loss of power during final approach for undetermined reasons as postaccident examinations did not reveal any preimpact anomalies with the airplane or engine.
Accident investigation:
 |
|
Sources:
NTSB WPR19LA198
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N3761L
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Jul-2019 06:12 | gerard57 | Added |
| 23-Jul-2019 08:50 | RobertMB | Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 23-Jul-2019 12:51 | Geno | Updated [Phase, Source] |
| 23-Jul-2019 21:51 | Captain Adam | Updated [Location, Source, Damage, Narrative] |
| 02-Jul-2022 07:21 | ASN Update Bot | Updated [Time, Cn, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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