# Accident 19990817012459A: Beech J35, Marysville, CA, August 17, 1999

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 17, 1999, 11:30 local time
- Place: Marysville, CA
- Airport: Yuba County Airport
- Damage: Destroyed
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 39.1495° N, 121.4694° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.1495&lon=-121.4694&mi=10
- Aircraft: N4932B, a cancelled registration (https://openairdocs.org/deregistered/N4932B-2001-07-18) (OpenAirDocs)
- Registry model: Beech J35 (registry code 1151522, https://openairdocs.org/model/beech-j35) (OpenAirDocs)
- Reported make and model: BEECH J35
- Reported engine: CONT IO470C
- Fatal injuries: 0
- Pilot flight hours: 1,596 total, 25 in the last 90 days
- NTSB investigation: [NTSB LAX99FA270](https://openairdocs.org/ntsb/LAX99FA270) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990817012459A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ACFT CONTACTED MCC TRACON AT 1820 WITH ROUGH RUNNING ENGINE AND WANTED TO LAND A MYV, YUBA COUNTY SHERIFF RESPONDED TO ACCIDENT SCENE AT THE WEST LINDA PARK, 2 SERIOUS INJURIES.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               (.4) ON AUGUST 17, 1999, AT 1130 HOURS PDT, A BEECH J35, N4932B, WAS DESTROYED WHEN THE AIRCRAFT IMPACTED A TREE AND TERRAIN DURING AN EMERGENCY LANDING APPROACH AT THE YUBA COUNTY AIRPORT, MARYSVILLE, CALIFORNIA. THE COMMERICAL LICENSED PILOT AND PRIVATE LICENSED SECOND PILOT WERE SERIOUSLY INJURIED.  VISUAL METEROLOGICAL CONDITIONS PREVAILED FOR THE PERSONAL FLIGHT, OPERATED BY THE OWNER/PILOT UNDER THE PROVISIONS OF 14 CFR PART 91.  THE FLIGHT DEPARTED FROM THE MARIN (PRIVATE) AIRPORT AT SAN RAFAEL ABOUT 1045, AND WAS DESTINED FOR A PRIVATE RANCH NEAR NAMPA, IDAHO.  NO FLIGHT PLAN WAS FILED.  WHEN APPROXIMATELY 7 MILES NORTHEAST OF MARYSVILLE, THE PILOT RADIOED SACRAMENTO APPROACH CONTROL THAT HE WAS HAVING PROBLEMS WITH THE ENGINE AND WAS DIRECTED TO THE YUBA COUNTY AIRPORT.  THE SECOND PILOT REPORTED THAT WHEN THEY WERE ONLEFT BASE LEG RUNWAY 14, THE COWLING FLEW OPEN, OIL FILLED THE WINDSHIELD, AND THE ENGINE CEASED DELIVERING POWER.  THE AIRCRAFT IMPACTED A TREE APPROXIMATELY 75 FEET ABOVE GOUND LEVEL, AND THEN CAME TO REST IN THE WEST LINDA PARK ABOUT 0.75-MILE NORTHWEST OF THE AIRPORT.  AT THE SCENE, THE NUMBER 6 ENGINE CYLINDER WAS SEPARATED FROM THE CRANKSHAFT AND       ENGINE COMPONENTS ASSOCIATED WITH THAT CYLINDER WERE FOUND 40-FOOT RADIUS AROUND THE AIRCRAFT.

## The NTSB's investigation of this event (1)

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.

- [NTSB LAX99FA270](https://openairdocs.org/ntsb/LAX99FA270), Aug 17, 1999: Beech J35 (N4932B), Marysville, CA, destroyed. Probable cause: A loss of engine power due to improperly torque cylinder base nuts by maintenance personnel during a top overhaul.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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