# NTSB LAX95LA287: Avid Mark IV, N16CN, Chino, CA, August 10, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 10, 1995, 13:50 local (20:50 UTC) - Place: Chino, CA - Coordinates: 33.949661, -117.639671 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.9497&lon=-117.6397&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report February 27, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 29180 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX95LA287 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29180/pdf - Page: https://openairdocs.org/ntsb/LAX95LA287 ## Probable cause a forced landing into unsuitable terrain due to an engine failure for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - mech failure/malf, climb - reason for occurrence undetermined - Forced landing, emergency descent/landing - In flight collision with object, emergency descent/landing - object - wire,transmission - On ground/water encounter with terrain/water, descent - uncontrolled ## Analysis THE PILOT PERFORMED SOME WORK ON THE ENGINE AND THE PROPELLER AND ADDED 4 GALLONS OF AUTOMOBILE FUEL TO THE RIGHT TANK PRIOR TO DEPARTURE. AFTER TAKEOFF, THE PILOT EXPERIENCED A ROUGH RUNNING ENGINE. HE ATTEMPTED A RETURN TO THE AIRPORT BUT THE ENGINE CONTINUED TO LOSE POWER. DURING THE FORCED LANDING TO AN OPEN FIELD, THE AIRCRAFT COLLIDED WITH SOME TELEPHONE LINES AND CRASHED INVERTED. THE PILOT DID NOT STATE WHAT THE SPECIFIC PROBLEM FOR THE LOSS OF POWER WAS. ## Factual narrative On August 10, 1995, at 1350 hours Pacific daylight time, the pilot of an Avid Mark IV, N16CN, experienced a loss of engine power shortly after takeoff from the airport at Chino, California. Visual meteorological conditions existed at the time for the local personal flight. The aircraft sustained substantial damage and the pilot received no injuries. The pilot indicated in his accident report that prior to departure he put 4 gallons of auto fuel in the right tank and went through a normal preflight checklist. He departed from runway 21 and shortly after takeoff, the engine began to run rough. The pilot attempted to circle back to the airport to land on runway 26. However, the engine continued to lose power and when the pilot realized he wasn't going to make the runway, he elected to land in a nearby field. During the approach, the aircraft collided with some telephone power lines and came to rest inverted in the field. The pilot stated in his report that he performed some work on the engine prior to the flight. The work included tension and tracking the speed reduction belt, checking the timing (35 degrees btdc at 4,500 rpm), and safety-wiring the propeller. He also indicated that he would never use an auto conversion in an airplane again. He did not state what the specific engine problem was. ## Aircraft - Registration: [N16CN](https://openairdocs.org/deregistered/N16CN-1996-01-30), registration cancelled 1996-01-30, S/N 1373D (OpenAirDocs) - Reported make and model: Avid Aircraft MARK IV - Registry model: [Nordquist Conrad AVID MK IV](https://openairdocs.org/model/nordquist-conrad-avid-mk-iv) (registry code 05626M5) (OpenAirDocs) - Category: Airplane - Serial number: 1373D - Airframe hours: 22 - Engines: SUBARU EA81 115 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Conrad Nordquist - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Continuous airworthiness, February 10, 1995, 22 hours before - Departed: CNO - Airport: CNO, Chino, runway 26, 4,856 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 62; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 112 total, 5 in this make and model, 41 as pilot in command, 3 in the last 90 days, 1 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 11 knots - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: 90 °F - Altimeter: 29.00 inHg - Observed at: CNO, 1 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 19950810023879A](https://openairdocs.org/incident/19950810023879A), Aug 10, 1995: Amtr AVIDFLYER, Chino, CA, Substantial damage. Rough engine on climbout. Struck wires landing in a field. Impacted. Nosed over. Had been working on engine. 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.