# NTSB LAX98LA198: Boeing Stearman A75N1, N48576, Riverbank, CA, June 14, 1998 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: June 14, 1998, 16:55 local (23:55 UTC) - Place: Riverbank, CA - Coordinates: 37.729541, -120.949119 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.7295&lon=-120.9491&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 1 uninjured; on the ground: 1 minor - Status: Completed, report March 30, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 30121 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX98LA198 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30121/pdf - Page: https://openairdocs.org/ntsb/LAX98LA198 ## Probable cause The pilot's inadequate visual lookout for on-coming ground traffic. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, approach - vfr pattern - final approach - object - vehicle - visual lookout - inadequate, pilot in command (cause) - information - not available, driver 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](https://openairdocs.org/deregistered/N48576-2000-01-28), registration cancelled 2000-01-28, S/N 75-2441 (OpenAirDocs) - Reported make and model: Boeing Stearman A75N1 - Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs) - Category: Airplane - Serial number: 6152 - Airframe hours: 3875 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 79; 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 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.