# NTSB LAX97LA102: Green Cozy III, N34PC, San Martin, CA, February 11, 1997 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 11, 1997, 11:15 local (19:15 UTC) - Place: San Martin, CA - Coordinates: 37.100795, -121.599273 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.1008&lon=-121.5993&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 14, 1997 - Report: Approved by Office Director - NTSB case key (mKey): 29726 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX97LA102 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29726/pdf - Page: https://openairdocs.org/ntsb/LAX97LA102 ## Probable cause A loss of engine power due to fuel contamination. A factor in the accident is the aircraft design, which routes hydraulic lines through the fuel tank. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, descent - normal - light condition - daylight - fluid,fuel - contamination,other than water (cause) - acft/equip,inadequate design, owner/builder (contributing factor) - Forced landing, approach - terrain condition - congested/confined area - landing gear - not deployed, pilot in command ## Analysis The pilot had throttled back for a descent but when he attempted to return to level flight, throttle movement failed to produce an increase in rpm. After several unsuccessful throttle movements, he declared an emergency and was directed toward the nearest airport. When it became apparent to him that he would not reach the runway, he made an emergency off airport, gear-up landing short of the airport boundary. Fuel was present in the carburetor and gascolator. The left main tank was empty but the right tank was nearly full. The fuel selector was found positioned on the right tank. The pilot reported contamination in the right tank and gascolator. Dirt was reportedly found at the bottom of the gascolator and red colored oil globules were found on the gascolator screen. Both dirt and oil were found in fuel from the right tank. The pilot told FAA inspectors that hydraulic lines are routed through both fuel tanks. There were no other deficiencies identified. ## Factual narrative On February 11, 1997, at 1115 hours Pacific standard time, an experimental Cozy III, N34PC, diverting to San Martin, California, experienced a partial power loss and made a forced landing short of the airport. The aircraft sustained substantial damage; however, the pilot, the sole occupant, was not injured. The aircraft was operated as a personal flight by its pilot/owner when the accident occurred. The flight originated in Stockton, California, at 1030 on the morning of the accident. Instrument meteorological conditions prevailed at San Jose, the original destination; however, the pilot was diverting to an area of visual conditions that existed at San Martin. No flight plan had been filed. The pilot reported that, as he approached San Jose, he realized he could not descend in VFR conditions due to a cloud layer. He was advising Bay approach that he was diverting to Sacramento, California, when the controller advised that the clouds had dissipated in the vicinity of Morgan Hill. The pilot continued to that location and, finding VFR conditions, throttled back to begin his descent into the San Jose area. At the completion of his descent, the pilot attempted to return to level flight by advancing the throttle. When the throttle movement failed to produce an increase in rpm after several attempts, the pilot declared an emergency. Bay approach reported the nearest airport was the South County Airport in San Martin. The pilot told the controller that he might be able to make the airport, but that it would be close. As he approached the airport, it became apparent to the pilot that he would not be able to reach the runway. He selected a paved Santa Clara County vehicle maintenance yard as an emergency landing site and decided to land with the gear retracted. After sliding to a stop, he exited the aircraft without assistance. Although the aircraft landed gear-up, there was no visible damage to the two-bladed propeller. The accident site was located approximately 100 yards from the airport boundary. A postaccident examination of the aircraft by FAA inspectors revealed that there was fuel present in the carburetor and gascolator. The left main tank was empty but the right tank contained an estimated 15 to 16 gallons of fuel. The fuel selector was found positioned on the right tank. The pilot stated that he observed contamination in the right tank and gascolator. He said he found dirt at the bottom of the gascolator and red colored oil globules on the gascolator screen. He also found dirt and oil in the fuel from the right tank after the fuel was drained into a clean container and examined. The pilot told FAA inspectors that hydraulic lines are routed through both fuel tanks. There were no mechanical deficiencies identified with the engine. ## Aircraft - Registration: [N34PC](https://openairdocs.org/deregistered/N34PC-2015-05-15), registration cancelled 2015-05-15, S/N 566 (OpenAirDocs) - Reported make and model: Green COZY III - Registry model: [Green Mike COZY](https://openairdocs.org/model/green-mike-cozy) (registry code 05616YE) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 566 - Airframe hours: 796 - Engines: Lycoming O-320-D2J 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Salvatore Peter La Barbera - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, September 16, 1996, 48 hours before - Departed: SCK, STOCKTON, CA - Destination: SJC, SAN JOSE, CA ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 809 total, 58 in this make and model, 809 as pilot in command, 24 in the last 90 days, 7 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 2,200 ft overcast - Temperature: 10 °F, dew point 7 °F - Altimeter: 30.00 inHg - Observed at: RHV, 21 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 19970211001489A](https://openairdocs.org/incident/19970211001489A), Feb 11, 1997: Amtr COZY, San Martin, CA, Substantial damage. Engine lost power and pilot made emergency landing in a parking lot. (.4)the pilot had throttled back for a descent but when he attempted to return to level… 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.