# NTSB LAX06CA013: Piper PA-23-160, N4252P, Upland, CA, October 19, 2005 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: October 19, 2005, 09:39 local (16:39 UTC) - Place: Upland, CA - Coordinates: 36.111389, -117.6875 - Nearby events: https://openairdocs.org/map.md?lat=36.1114&lon=-117.6875&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 2 uninjured; on the ground: 1 minor - Status: Completed, report February 28, 2006 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 62690 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX06CA013 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62690/pdf - Page: https://openairdocs.org/ntsb/LAX06CA013 ## Probable cause the pilot's failure to maintain directional control during landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - directional control - not maintained, pilot in command (cause) - landing gear,normal brake system - worn - ground loop/swerve - not corrected, pilot in command - On ground/water collision with object, landing - roll - object - vehicle ## Analysis After touchdown, the airplane veered off the right side of the runway and collided with a vehicle. During the collision sequence, the airplane spun 180 degrees and its right main landing gear collapsed. The pilot said that following the airplane's touchdown on the runway, he started to apply the brakes but they felt mushy and unresponsive. He applied more and more pressure to the brakes but the airplane did not stop. As he continued to apply pressure, the airplane departed the right side of the runway and collided with a vehicle. A Federal Aviation Administration (FAA) airworthiness inspector examined the braking system with an aviation maintenance technician. The left brake had new linings and the brake disk was worn. The right brake linings were at a minimum and the disk was within acceptable limits. Responding law enforcement officers noted that three distinctive skid marks matching the dimensional geometry of the aircraft's landing gear were on the runway and they veered for several hundred feet off the right side of the runway and led to the impact damaged vehicle and the airplane. The skid marks corresponding to the right and left main wheels were identical in width, heaviness, and color. The FAA inspector reported that there was no evidence that either brakes had locked up during the landing. ## Factual narrative After touchdown, the airplane veered off the right side of the runway and collided with a vehicle. During the collision sequence, the airplane spun 180 degrees and its right main landing gear collapsed. The pilot said that following the airplane's touchdown on the runway, he started to apply the brakes but they felt mushy and unresponsive. He applied more and more pressure to the brakes but the airplane did not stop. As he continued to apply pressure, the airplane departed the right side of the runway and collided with a vehicle. A Federal Aviation Administration (FAA) airworthiness inspector examined the braking system with an aviation maintenance technician. The left brake had new linings and the brake disk was worn. The right brake linings were at a minimum and the disk was within acceptable limits. Responding law enforcement officers noted that three distinctive skid marks matching the dimensional geometry of the aircraft's landing gear were on the runway and they veered for several hundred feet off the right side of the runway and led to the impact damaged vehicle and the airplane. The skid marks corresponding to the right and left main wheels were identical in width, heaviness, and color. The FAA inspector reported that there was no evidence that either brakes had locked up during the landing. ## Aircraft - Registration: [N4252P](https://openairdocs.org/deregistered/N4252P-2006-06-15), registration cancelled 2006-06-15, S/N 23-1751, built 1959 (OpenAirDocs) - Reported make and model: Piper PA-23-160 - Registry model: [Piper PA-23-160](https://openairdocs.org/model/piper-pa-23-160) (registry code 7102304) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 23-1751 - Engines: Lycoming O-320 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Charter Jet, Inc. - Registered owner: Charter Jet, Inc. - Airworthiness certificate: Standard, Normal - Departed: IFP, Laughlin, NV - Destination: CCB, Upland, CA - Flight plan: VFR - Airport: CCB, Cable Airport, runway 24, 3,865 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 25; injuries: minor; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1; flight hours: 1,500 total, 82 in this make and model, 300 in the last 90 days, 72 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 3 statute miles - Lowest ceiling: 4,000 ft overcast - Temperature: 70 °F ## 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 20051019027959A](https://openairdocs.org/incident/20051019027959A), Oct 19, 2005: Piper PA23160, Upland, CA, Substantial damage. (-23) Pilot crashed into parked vehicle, injuring man inside. Pilot reported brakes had locked when applied after touchdown. Inspection of brakes revealed that… 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.