# NTSB LAX97LA115: Ryan Navion, N4969K, Marina, CA, March 9, 1997 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: March 8, 1997, 17:30 local (Mar 9, 1997, 01:30 UTC) - Place: Marina, CA - Coordinates: 36.669361, -121.789031 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.6694&lon=-121.7890&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 14, 1997 - Report: Approved by Office Director - NTSB case key (mKey): 29735 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX97LA115 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29735/pdf - Page: https://openairdocs.org/ntsb/LAX97LA115 ## Probable cause Fuel exhaustion due to the pilot's improper preflight inspection and his inaccurate fuel consumption calculations. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, takeoff - initial climb - fluid,fuel - exhaustion (cause) - aircraft preflight - improper, pilot in command (cause) - fuel consumption calculations - inaccurate, pilot in command - fuel supply - inadequate, pilot in command (cause) - Forced landing, emergency landing after takeoff - On ground/water collision with object, emergency landing after takeoff - object - fence ## Analysis The pilot took off and the airplane gained about 800 feet when suddenly all engine power was lost. The pilot attempted to return to the runway, but collided with the airport's boundary fence short of the field. According to the pilot, six new cylinders had been recently installed in the engine, and the purpose of the flight was to complete the break-in process. The pilot reported that he believed 8 to 10 gallons of fuel should have been in the main fuel tank at takeoff, but evidently the fuel burn-off rate was greater than he had previously calculated. The FAA coordinator reported that he examined the airplane and drained all the fuel which remained in the tanks. A maximum of 0.5 gallon of fuel was found in each wing tip fuel tank. Also, about 3.0 gallons of fuel were found in the rear seat auxiliary tank, and 1.5 gallons were found in the main tank. The estimated unusable fuel quantity in the main tank is 3.0 gallons. The pilot indicated when engine power was lost the fuel tank selector was positioned to the main fuel tank. ## Factual narrative On March 8, 1997, at 1730 hours Pacific standard time, a Ryan Navion, N4969K, owned and operated by the pilot, experienced a total loss of engine power at 800 feet above ground level during the initial climb from runway 29 at the Marina Municipal Airport, Marina, California. Visual meteorological conditions prevailed, and no flight plan was filed for the personal flight. The pilot reported that he attempted to return to the runway and during the approach, the airplane collided with the airport's perimeter fence and was substantially damaged. The private pilot was not injured. The flight originated from Marina at 1728. According to the pilot, six new cylinders had been recently installed in the engine, and the purpose of the flight was to complete the break-in process. The pilot indicated the fuel burn-off rate was apparently greater than he had previously calculated. The pilot believed that 8 to 10 gallons of fuel should have been in the main fuel tank at takeoff. The Federal Aviation Administration (FAA) coordinator reported that he examined the airplane and drained all the fuel which remained in the tanks. The FAA reported finding approximately 0.5 gallon of fuel in the left tip tank, and less than 0.5 gallon in the right tip tank. Also, about 3.0 gallons of fuel were found in the rear seat auxiliary tank, and 1.5 gallons were found in the main tank. The estimated unusable fuel quantity in the main tank is 3.0 gallons. The FAA coordinator additionally reported that the pilot indicated when engine power was lost, the fuel tank selector was positioned to the main fuel tank. ## Aircraft - Registration: [N4969K](https://openairdocs.org/aircraft/N4969K), registered now, S/N NAV-4-1969, built 1949 (OpenAirDocs) - Reported make and model: Ryan NAVION - Registry model: [Ryan NAVION](https://openairdocs.org/model/ryan-navion) (registry code 6150160) (OpenAirDocs) - Registry engine: [Continental E225 series](https://openairdocs.org/engine/continental-e225-series) (registry code 17015, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: NAV-4-1969 - Airframe hours: 4081 - Engines: Continental IO-520-BB 285 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Ronald W. French - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 4, 1997, 2 hours before - Departed: OAR - Destination: RHV, SAN JOSE, CA - Airport: OAR, Marina Municipal, runway 29, 2,999 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 53; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,443 total, 956 in this make and model, 1,280 as pilot in command, 11 in the last 90 days, 4 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 200° at 13 knots - Visibility: 30 statute miles - Lowest ceiling: none - Temperature: 64 °F - Altimeter: 30.00 inHg ## 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 19970309002649A](https://openairdocs.org/incident/19970309002649A), Mar 9, 1997: Tmpson NAVION*, San Jose, CA, Substantial damage. Engine quit in pattern. Hit fence landing only unusable fuel left. 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.