# NTSB SEA07CA033: Extra Flugzeugbau EA 300/L, N91BH, Boulder City, NV, December 12, 2006 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: December 12, 2006, 14:30 local (22:30 UTC) - Place: Boulder City, NV - Coordinates: 35.95639, -114.868057 - Nearby events: https://openairdocs.org/map.md?lat=35.9564&lon=-114.8681&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 1 uninjured - Status: Completed, report March 26, 2007 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 65001 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA07CA033 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65001/pdf - Page: https://openairdocs.org/ntsb/SEA07CA033 ## Probable cause The pilot-in-command's failure to maintain directional control of the airplane during takeoff. ## Analysis The pilot lost directional control of the airplane during the takeoff run, and the airplane cartwheeled prior to coming to rest upright. The pilot was flying from the aft seat as pilot-in-command (PIC) and a pilot-rated passenger was in the front seat. During the takeoff run, the airplane veered from the runway and attempts were made to position the airplane back to runway heading. As it veered from the runway, the airplane entered soft soil, decreasing the available performance. The takeoff was continued due to a drainage ditch immediately in their direction of travel. After the airplane cleared the ditch, the right aileron spade impacted a fence post and the airplane cartwheeled. During the impact sequence, the engine was ripped from its mounts and the outboard portion of the left wing separated. The post-accident inspection revealed no evidence of mechanical malfunctions with the airplane prior to the accident. ## Factual narrative On December 12, 2006, at 1430 Pacific standard time, an Extra Flugzeugbau GMBH EA 300/L, N91BH, veered off the runway during takeoff from runway 9R at Boulder City Municipal Airport, Boulder City, Nevada. The airplane was owned by a private company and was being operated by the Aerobatic Experience under the provisions of 14 CFR Part 91. The commercial pilot, who held an airline transport pilot certificate in multi-engine airplanes and a commercial certificate for single-engine airplanes, sustained minor injuries, and the commercial certificated passenger was not injured. The airplane sustained substantial damage. Visual meteorological conditions prevailed, and no flight plan was filed. The local formation flight was originating at the time of the accident. The pilot reported in a written statement that the purpose of the flight was a two-airplane formation flight, of which the accident airplane was in the number two position. The pilot was acting as pilot-in-command (PIC) of the flight and seated in the rear seat, and the passenger was performing the takeoff. As the tail rose during the takeoff roll, the airplane began to swerve across the runway. The right wing came up slightly and then the airplane veered to the right and departed the runway surface. Due to the soft terrain at the runway edge, the airplane would not accelerate. The PIC noted a large drainage ditch and decided that aborting the takeoff would not be possible with the obstruction. The airplane flew over the ditch and then touched down with the right main gear on the far side of the ditch. The airplane then cartwheeled and came to rest upright with the left wing separated at its mid-section and the right wing angled upward. The passenger stated that he had purchased the aircraft flight from Aerobatic Experience with the intent of obtaining formation instruction. During the flight, both the passenger and PIC were on the controls. The airplane accelerated and the PIC told the passenger that they had a left crosswind, so they applied crosswind correction. The right wing rose and the passenger said he eased control application of the left crosswind correction. As he eased off of the correction, the airplane canted to the right. At 50-60 knots, the airplane departed the runway surface to the right and just prior to impacting a ditch, became airborne. Following the ditch, the right aileron spade impacted a fence post and the airplane cartwheeled. The Federal Aviation Administration accident coordinator responded from the Las Vegas Flight Standards District Office. A flight control continuity check was performed and movement was obtained to the rudder, elevators, and right aileron. The left aileron had separated from the left wing. Examination of the braking system showed normal operation. No mechanical malfunctions were noted. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, takeoff - roll/run - directional control - not maintained, pilot in command (cause) - terrain condition - soft - On ground/water encounter with terrain/water, takeoff - aborted - terrain condition - ground ## Aircraft - Registration: [N91BH](https://openairdocs.org/deregistered/N91BH-2012-09-20), registration cancelled 2012-09-20, S/N 079, built 1998 (OpenAirDocs) - Reported make and model: Extra Flugzeugbau GMBH EA 300/L - Registry model: [Extra Flugzeugbau EA 300/L](https://openairdocs.org/model/extra-flugzeugbau-ea-300-l) (registry code 70218DG) (OpenAirDocs) - Registry engine: [Lycoming AEIO-540 series](https://openairdocs.org/engine/lycoming-aeio-540-series) (registry code 41568, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 079 - Engines: Textron Lycoming AEIO-540 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Aerobatic Experience - Registered owner: Barron W Hilton DBA Flying M Hunt Club - Airworthiness certificate: Standard, Normal; Standard, Aerobatic - Departed: 61B, Boulder City, NV - Airport: 61B, Boulder City Muni Airport, runway 9R, 4,800 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; commercial, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1; flight hours: 15,808 total, 118 in this make and model, 177 in the last 90 days, 78 in the last 30 days - Student pilot; age 40; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1; flight hours: 650 total, 16 in this make and model ## Weather - Conditions: Visual (VMC), Day ## 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 20061212028779A](https://openairdocs.org/incident/20061212028779A), Dec 12, 2006: Rhnflu EA300L, Boulder City, NV, Destroyed. (-23) Sequence: the accident aircraft was operating as the second aircraft in a flight of two. The purpose of the flight was formation practice. The wind had… 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.