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Accidents · NTSB WPR15LA183 · Final report

Beech E33A accident near Tucson, Arizona, June 11, 2015

On June 11, 2015 at about 3:40 pm local time, a 1968 Beech E33A, registered N8401N, was substantially damaged in an accident during landing (landing roll) near Tucson, Arizona (La Cholla Airpark airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

A loss of left braking action for reasons that could not be determined because postaccident examination did not reveal any evidence of preimpact mechanical failures or malfunctions that would have precluded normal operation, which resulted in a loss of directional control.

Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.

What the record shows

Date
June 11, 2015 · about 3:40 pm local time · cases in 2015
Place
Tucson, Arizona · La Cholla Airpark · cases near this airport · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Beech E33A, built 1968 · all E33As on the register
Registration
N8401N · registry record · serial CE-215
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

The airplane touched down smoothly with the power nearly off. During the landing roll, the commercial pilot applied gentle pressure to the brakes to slow down; however, there was no left braking action, but there was right braking action. The pilot was unable to maintain directional control of the airplane, and it departed the narrow runway and subsequently collided with a drainage ditch and cement wall. During postaccident examination of the brake system, the hydraulic system was found almost empty because the bleeder valve on the brake caliper had sheared off due to impact damage. The examination revealed no evidence of any preimpact mechanical failures or malfunctions that would have precluded normal operation. The reason for the lack of left braking action could not be determined.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. Sys/Comp malf/fail (non-power) during landing (landing roll) defining event
  2. Runway excursion during landing (landing roll)
  3. Collision with terrain or object (not controlled flight into terrain) during landing

The NTSB's findings

  • cause Not determined › Not determined › (general) › (general) › Unknown/Not determined
  • Environmental issues › Physical environment › Object/animal/substance › (general) › Contributed to outcome

Pilot

  • Certificate: commercial pilot
  • Ratings: multi-engine land; single-engine land; instrument: airplane
  • Flight time: 4,500 hours in all; 2,000 in this make and model; 6 in the last 90 days; 2 in the last 30 days; 4,000 as pilot in command
  • Last flight review: August 1, 2013
  • Medical certificate: Class 3 (with waivers/limitations)
  • Seat: left
  • Injury: no injuries

The aircraft

  • Airframe total time: 5,000 hours
  • Last inspection: annual inspection, May 20, 2015; 2 hours since
  • Maximum gross weight: 3,300 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Cont Motor IO 520 SERIES (piston); 1,000 hours total

The flight

  • Departed from: 57AZ Tucson AZ at 3:00 pm
  • Destination: 57AZ Tucson AZ
  • Flight plan: none
  • Runway 01, 4,500 ft by 44 ft

Weather at the time

  • Light: daylight
  • Wind: from 330° at 7 knots
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 81°F (27°C), dew point 59°F (15°C)
  • Altimeter: 29.87 inHg
  • Observation at 3:58 pm from KDMA, 18 miles away

Injuries

FatalSeriousMinorNone
Flight crew1

Documents from the investigation the NTSB's docket: the evidence folder behind the report

3 documents, released by the NTSB on December 28, 2017. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Connections how this case links to the rest of the register

Aircraft
Place

The whole map of how records connect · these connections as data: /graph/accident/WPR15LA183.json.

The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.