LAX98LA198

NTSB accident investigation · Boeing Stearman A75N1 · Riverbank, CA · June 14, 1998

Accident · Minor injuriesLimited investigationFinal report
Date
June 14, 1998, 16:55 local (23:55 UTC)
Place
Riverbank, CA
Injuries
1 minor, 1 uninjured; on the ground: 1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N48576Boeing Stearman A75N1
Weather
Visual (VMC) · Day
Status
Completed · report March 30, 2000
Report
Approved by Office Director
Case key
30121

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's inadequate visual lookout for on-coming ground traffic.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectApproach - vfr pattern - final approach
Object - vehicle
Visual lookout - inadequatePilot in commandCause
Information - not availableDriver of vehicle

Analysis

The pilot stated that the runway was situated perpendicular to a road. He overflew the private dirt strip two times to check for landing direction and on-coming traffic. The pilot stated that he observed no on-coming traffic. He reported that as he reached the threshold 'things happened.' The aircraft touched down and became inverted facing the approach end of the runway. The pilot reported that he did not realize that the aircraft had struck a vehicle. Both the pilot and driver of the vehicle stated that they were unaware of each other's presence. No signage is available warning vehicles of low flying aircraft.

Factual narrative

On June 14, 1998, at 1655 hours Pacific daylight time, a Boeing Stearman A75N1, N48576, struck a vehicle on approach for landing and came to rest inverted on the runway of a private dirt strip near Riverbank, California. The aircraft, operated under 14 CFR Part 91 sustained substantial damage. The commercial pilot/owner was not injured. The driver of the car sustained minor injuries. Visual meteorological conditions existed for the personal flight that had departed the Sacramento, California, airport at 1645. The flight was scheduled to terminate at the private dirt strip and no flight plan was filed.

In an interview with a Federal Aviation Administration (FAA) inspector, the pilot stated that the dirt strips runs perpendicular to Lone Star Road. His standard practice is to overfly the airport two times to check the windsock for landing direction, and to verify that there is no traffic on the road. He reported that as he reached the threshold "things happened." The aircraft touched down and became inverted facing the approach end of the runway. The pilot reported that he exited the aircraft to see if he had touched down on soft dirt. He stated that he still had not realized that he had struck a vehicle. The pilot reported no pre-existing anomalies with the engine.

In the pilot's written statement to the Safety Board, he stated that to clear traffic on the road, his usual practice is to fly approximately 200 to 300 feet above ground level. He further reported that he observed no traffic on the base leg or final leg of the approach.

A California Highway Patrol (CHP) officer from Colusa County investigated the accident, and interviewed the pilot and driver of the car. Both the pilot and the driver of the automobile stated that they were unaware of each other's presence during the accident. The CHP officer noted that there are no signs either north or southbound warning of low flying aircraft, or any mention of an airport until arrival at airport entrance.

The driver of the vehicle was interviewed by the FAA through his father. The father reported that his son was traveling southbound at the time of the accident, and the aircraft struck the left side of the vehicle.

Aircraft

Registration
N48576
Reported as
Boeing Stearman A75N1
Category
Airplane
Serial number
6152
Airframe hours
3,875
Engine
Continental W-670, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Howard Petersen
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 29, 1998 · 8 hours before
Departed
CA · Sacramento, CA
Airport
Private Dirt Strip, runway 27, 1,800 × 30 ft, dirt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
79
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Rear
Flight hours
16,000 total · 14,000 in this make and model · 16,000 as pilot in command · 10 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F