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| NTSB Identification: CHI98LA226. The docket is stored in the (offline) NTSB Imaging System. |
| Accident occurred Sunday, June 28, 1998 at OSCEOLA, WI |
| Aircraft: Cessna 150H, registration: N50433 |
| Injuries: 2 Minor |
| Event: 20001211X10272 Status: Final Report Approved On Thursday, February 15, 2001 |
| NTSB Preliminary Narrative (6120.19A) |
| On June 28, 1998, at 1545 central daylight time, a Cessna 150H, N50433, experienced a loss of engine power during an initial climb during |
| takeoff from the Osceola Airport, Osceola, Wisconsin. The flight instructor pilot and commercial pilot (student) received minor injuries. The |
| airplane sustained substantial damage. The aircraft was being operated as an instructional flight under 14 CFR Part 91 and had been |
| performing touch & go landings. Visual meteorological conditions prevailed and no flight plan was filed. The flight was departing with the |
| intended destination of Blaine, Minnesota, when the accident occurred.. |
| According to a written statement by the pilot, water was found while draining fuel during the pre-flight check. Several sumps were performed |
| to remove water and contaminants from the fuel. The pilot stated they were very confident no water could be left in the system. After |
| performing a touch and go landing at Osceola, Wisconsin, at 200 feet the engine sputtered and quit. The instructor took over the controls and |
| conducted a forced landing. On rollout, the airplane impacted a road and nosed over. |
| During a subsequent post accident investigation, a fuel sample taken from the gascolator revealed approximately 80% water in the sample. The |
| inspector's report is attached as an addendum to this report. |
| NTSB Final Narrative (6120.4) |
| In the written statement the instructor said that during the preflight the student found water in the fuel. He indicated that there was additional fuel |
| drawn in an attempt to remove the water. He said he was confident that no water was left in the system. After conducting some touch and go |
| landings, and during initial climb, the engine suffered a total loss of power. A forced landing was conducted in an area where the airplane |
| impacted a roadway and nosed over. A subsequent examination of the gascolator found about 80% water contained in the sample drawn from |
| that location. |
| NTSB Probable Cause Narrative |
| the student pilot's incomplete preflight, and the instructor pilot's inadequate supervision of the student's preflight. Factors were the fuel |
| contaminated with water, and the roadway encountered during the forced landing rollout. |
| Occurrences and Sequence of Events |
| Occurrence: 1, LOSS OF ENGINE POWER(TOTAL) - NONMECHANICAL |
| Phase of Operation: TAKEOFF - INITIAL CLIMB |
| Sequence of Events for Occurrence Number: 1 |
| 1 ( Factor ) FUEL SYSTEM / CONTAMINATION, WATER / (0) |
| 2 ( Cause ) AIRCRAFT PREFLIGHT / IMPROPER / DUAL STUDENT |
| 3 ( Cause ) SUPERVISION / INADEQUATE / PILOT IN COMMAND (CFI) |
| Occurrence: 2, FORCED LANDING |
| Phase of Operation: EMERGENCY DESCENT/LANDING |
| Occurrence: 3, ON GROUND/WATER ENCOUNTER WITH TERRAIN/WATER |
| Phase of Operation: LANDING - ROLL |
| Sequence of Events for Occurrence Number: 3 |
| 1 ( Factor ) TERRAIN CONDITIONS / ROADWAY/HIGHWAY / (0) |
| Occurrence: 4, NOSE OVER |
| Phase of Operation: LANDING - ROLL |
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