# NTSB LAX97LA005: North American F-86, N186SE, Salinas, CA, October 6, 1996 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 6, 1996, 11:45 local (18:45 UTC) - Place: Salinas, CA - Coordinates: 36.639984, -121.620025 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.6400&lon=-121.6200&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 30, 1997 - Report: Approved by Office Director - NTSB case key (mKey): 29653 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX97LA005 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29653/pdf - Page: https://openairdocs.org/ntsb/LAX97LA005 ## Probable cause an internal failure of a hydraulic pump, which resulted in contamination in the hydraulic system and subsequent loss of the braking system. Factors related to the accident included the proximity of a fence and rough/uneven terrain adjacent to the runway. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, landing - roll - hydraulic system,auxiliary pump - failure (cause) - hydraulic system - contamination,other than water (cause) - landing gear,normal brake system - inoperative (cause) - Overrun, landing - roll - On ground/water collision with object, landing - roll - object - fence (contributing factor) - On ground/water encounter with terrain/water, landing - roll - terrain condition - rough/uneven (contributing factor) ## Analysis During an air show, the pilot made several uneventful flybys, then landed near the beginning of the runway. During rollout, the pilot noted a hydraulic brake system failure. Unable to stop with only unboosted brakes, the airplane overran the departure end of the 5,005 foot runway and collided with a fence and rough terrain. Investigation revealed the engine driven #3 system auxiliary hydraulic boost pump had failed internally. Metal particles were found in its screen. ## Factual narrative On October 6, 1996, at 1145 hours Pacific daylight time, a North American F-86, N186SE, landed in the touchdown zone on runway 26 during an air show at the Salinas Municipal Airport, Salinas, California. The pilot reported that during rollout he experienced hydraulic brake system failure. The airplane overran the departure end of the 5,005-foot-long runway and collided with a fence and rough terrain which resulted in substantial airframe damage. The airline transport pilot was not injured. Visual meteorological conditions prevailed. The flight originated from Salinas at 1135. According to the pilot, during the flight he had performed several flybys without incident. On final approach the airplane lost all utility hydraulic pressure. During rollout he shut down, but was unable to stop with the unboosted brakes. The FAA coordinator reported its investigation revealed that the engine driven No. 3 system auxiliary hydraulic boost pump internally failed. Metal particles were found in its screen. ## Aircraft - Registration: [N186SE](https://openairdocs.org/deregistered/N186SE-2013-04-01), registration cancelled 2013-04-01, S/N 001 (OpenAirDocs) - Reported make and model: North American F-86 - Registry model: [North American/North Woods ACF F-86](https://openairdocs.org/model/north-american-north-woods-acf-f-86) (registry code 6401703) (OpenAirDocs) - Category: Airplane - Serial number: 001 - Engines: GE J47-27 6010 lbs thrust turbo jet - Damage: Substantial damage - Flight: Part 91 - Operator: Clyde S. Eberhardt - Registered owner: Stuart & Marilyn Eberhardt - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, August 12, 1996, 7 hours before - Departed: SNS - Airport: SNS, Salinas Municipal, runway 26, 5,005 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 60; airline transport, flight engineer, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: front; flight hours: 27,043 total, 435 in this make and model, 16,183 as pilot in command, 25 in the last 90 days, 18 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 5 knots - Visibility: 50 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 55 °F - Altimeter: 30.00 inHg - Observed at: SNS, 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 19961006030939A](https://openairdocs.org/incident/19961006030939A), Oct 6, 1996: Namer F86F, Salinas, CA, Substantial damage. Landing lost hydraulics. No brakes. Killed engine. Rolled off end runway thru chainlink fence. NR3 aux pump failed. 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.