The National Transportation Safety Board did not travel to the scene of this accident.
Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Boise, Idaho
Aviation Accident Preliminary Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
https://registry.faa.gov/N6486J
Location: Melba, ID
Accident Number: WPR19LA092
Date & Time: 03/01/2019, 1345 MST
Registration: N6486J
Aircraft: Cessna 172
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Instructional
On March 1, 2019, about 1345 mountain standard time, a Cessna 172N airplane, N6486J, was substantially damaged during a forced landing following a loss of engine power near Melba, Idaho. The flight instructor and student pilot were not injured. The airplane was registered to an individual and operated by Avcenter Inc., under the provisions of Title 14 Code of Federal Regulations Part 91 as an instructional flight. Visual meteorological conditions prevailed, and no flight plan was filed. The local flight departed Nampa Municipal Airport (MAN), Nampa, Idaho about 1310.
The flight instructor reported that they had performed about 12 power-off and power-on stalls, while maintaining an altitude between 4,500 ft and 2,000 ft msl during the maneuvers. While performing the last power-off stall, with the nose of the airplane pitched up, the engine stopped without warning. During the maneuver the throttle lever was in the closed position, and the carburetor heat was in the 'ON' position. The flight instructor pitched the nose of the airplane down and asked the student pilot to restart the engine. The student pilot was unable to rotate the engine using the starter, and the flight instructor verified that the master switch was in the 'ON' position. The flight instructor tried to start the engine himself and was unsuccessful; the engine would not rotate. While looking for a place to land, the flight instructor tried several times to rotate the engine using the starter and was still unsuccessful. The flight instructor performed a forced landing in a field about 12 miles southwest of MAN.
During the landing roll, the right wing impacted the ground and the right wing spar sustained substantial damage.
The initial examination of the airplane at the accident site was performed by the operator's mechanic. The examination revealed that the idle adjustment screw and spring assembly had separated from the carburetor and was found in the lower cowling area. While on site, the flight instructor told the mechanic about the inability to rotate the engine with the starter after the power loss. The airplane was moved to a nearby road and the mechanic was able to rotate the engine via the starter. The airplane was recovered to MAN for further examination.
The examination of the airplane by a Federal Aviation Administration inspector revealed no other anomalies, and the airplane was released back to its owner.
Aircraft and Owner/Operator Information
Aircraft Make: Cessna
Registration: N6486J
Model/Series: 172 N
Aircraft Category: Airplane
Amateur Built: No
Operator: Avcenter Inc.
Operating Certificate(s) Held: None
Meteorological Information and Flight Plan
Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KMAN, 2537 ft msl
Observation Time: 1305 MST
Distance from Accident Site: 10 Nautical Miles
Temperature/Dew Point: 7°C / 4°C
Lowest Cloud Condition: Clear
Wind Speed/Gusts, Direction: Calm / ,
Lowest Ceiling: None
Visibility: 10 Miles
Altimeter Setting: 30.1 inches Hg
Type of Flight Plan Filed: None
Departure Point: Nampa, ID (KMAN)
Destination: Nampa, ID (KMAN)
Wreckage and Impact Information
Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 43.426944, -116.621111 (est)
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