# NTSB LAX95LA335: Piper PA-18-150, N7498L, Bakersfield, CA, September 15, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 15, 1995, 11:45 local (18:45 UTC) - Place: Bakersfield, CA - Coordinates: 35.540306, -118.909477 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=35.5403&lon=-118.9095&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report March 21, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 29217 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX95LA335 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29217/pdf - Page: https://openairdocs.org/ntsb/LAX95LA335 ## Probable cause a loss of engine power for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - normal - reason for occurrence undetermined (cause) - Forced landing, emergency landing - On ground/water encounter with terrain/water, emergency landing - terrain condition - crop - terrain condition - high vegetation ## Analysis THE PILOT REPORTED THAT HE WAS IN CRUISE FLIGHT WHEN THE ENGINE BEGAN TO RUN ROUGH, ACCOMPANIED BY A VERY HIGH OIL TEMPERATURE ABOVE THE RED LINE. THE ENGINE QUIT ALTOGETHER SHORTLY THEREAFTER. THE PILOT SAID HE WAS SET UP FOR A LANDING IN A BARE FIELD WHEN HE NOTICED WORKERS IN THE TOUCHDOWN AREA AND HE WAS FORCED TO LAND IN THE VINEYARD. NO DISCREPANCIES WERE IDENTIFIED DURING THE INITIAL ON-SITE EXAMINATION OF THE AIRCRAFT. FUEL WAS FOUND IN THE TANKS, LINES AND CARBURETOR. THE ENGINE CRANKSHAFT ROTATED IN A NORMAL MANNER. THE AIRCRAFT WAS THEN TRANSPORTED TO AN AIRCRAFT MAINTENANCE FACILITY. NO PARTICLES OR DEBRIS WERE FOUND IN THE OIL STRAINER OR SUMP. THE LEFT MAGNETO TIMING WAS 25 DEGREES AND THE RIGHT WAS 28 DEGREES. UTILIZING THE AIRCRAFT SYSTEMS, THE ENGINE WAS STARTED AND RUN FOR 15 MINUTES AT IDLE, MID-RANGE, AND FULL POWER SETTINGS. ENGINE OPERATION WAS NORMAL, WITH NORMAL RANGE OIL PRESSURES AND TEMPERATURES. ## Factual narrative On September 15, 1995, at 1145 Pacific daylight time, a Piper PA-18-150, N7498L, collided with grapevines in a vineyard near Bakersfield, California, during an attempted forced landing. The forced landing was precipitated by a loss of power during cruise. The aircraft was owned and operated by the pilot and was on a personal cross-country flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft incurred substantial damage and an undetermined amount of damage occurred to the grape crop. The certificated commercial pilot, the sole occupant, was not injured. The flight originated at Vacaville, California, on the day of the accident at 0822 as a cross-country to Barstow, California. In a telephone interview, the pilot reported that he was in cruise flight when the engine began to run rough, accompanied by a very high oil temperature above the red line. The engine quit altogether shortly thereafter. The pilot said he was set up for a landing in a bare field when he noticed workers in the touchdown area and he was forced to land in the vineyard. FAA airworthiness inspectors from the Fresno, California, Flight Standards District Office responded to the accident site and performed an initial on-site examination of the aircraft. The inspectors reported that no discrepancies were identified. Fuel was found in the tanks, lines, and carburetor. The engine crankshaft rotated in a normal manner. The aircraft was transported to an aircraft maintenance facility in Ajo, Arizona, after recovery from the site. An FAA airworthiness inspector from the Scottsdale, Arizona, Flight Standards District Office, supervised a detailed examination of the aircraft on December 15, 1995. No particles or debris were found in the oil strainer or sump. The left magneto timing was 25 degrees and the right was 28 degrees. Utilizing the aircraft systems, the engine was started and run for 15 minutes at idle, mid-range, and full power settings. Engine operation was normal, with normal range oil pressures and temperatures. ## Aircraft - Registration: N7498L (not matched to a registry record) - Reported make and model: PIPER PA-18-150 - Category: Airplane - Serial number: 18-7609017 - Airframe hours: 2376 - Engines: LYCOMING O-320-A2B 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Ralph C. Conatser - Airworthiness certificate: Standard, Normal - Departed: 045, VACAVILLE, CA - Destination: DAG, BARSTOW, CA ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 67; commercial; airplane ratings: single-engine sea, single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 7,000 total ## Weather - Conditions: Visual (VMC), Day - Wind: 210° at 5 knots - Visibility: 6 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 61 °F - Altimeter: 29.00 inHg - Observed at: BFL, 18 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19950915029889A](https://openairdocs.org/incident/19950915029889A), Sep 15, 1995: Piper PA18150, Bakersvield, CA, Substantial damage. Engine ran hot and quit. Landed in vinewyrd. Engine ran normal in test stand. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.