Quicksilver MX accident near Nampa, Idaho, June 23, 2015
On June 23, 2015 at about 2:15 am local time, a Quicksilver MX, an amateur-built aircraft,, registered UNREG, was substantially damaged in an accident during takeoff near Nampa, Idaho (Nampa Muni 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
The student pilot's failure to maintain directional control during the takeoff roll, resulting in a runway excursion, and a collision with terrain.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 23, 2015 · about 2:15 am local time
- Place
- Nampa, Idaho · Nampa Muni · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Quicksilver MX, amateur-built
- Registration
- UNREG · no longer on the register · serial 4371
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The student pilot reported that during the takeoff roll, in an unregistered amateur built experimental airplane, a crosswind pushed the airplane off the runway to the left. The airplane collided with a rock in a ditch and nosed over, sustaining substantial damage to the fuselage. The student pilot reported no pre-impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
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
- Loss of control on ground during takeoff defining event
- Runway excursion during takeoff
- Collision with terrain or object (not controlled flight into terrain) during takeoff
- Nose over/nose down during takeoff
The NTSB's findings
- cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Student/instructed pilot
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Directional control › Not attained/maintained
- Environmental issues › Physical environment › Object/animal/substance › Debris/dirt/foreign object › Contributed to outcome
Dual student
- Certificate: student
- Medical certificate: Class 3
- Seat: left
- Injury: no injuries
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 535 lb
- Seats: 2
- Landing gear: fixed
- Engine: Rotax (piston); 0 hours total
The flight
- Departed from: MAN Nampa ID at 2:15 am
- Destination: MAN Nampa ID
- Flight plan: none
- Runway 29, 5,000 ft by 75 ft
Weather at the time
- Light: daylight
- Wind: from 350° at 5 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 84°F (29°C), dew point 36°F (2°C)
- Altimeter: 29.94 inHg
- Observation at 2:15 am from KMAN
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
3 documents, released by the NTSB on July 20, 2015. 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.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 9 pages | View Download |
| 2 | Record of Conversation (Pilot) | PDF, 1 page | View Download |
| 3 | Photo 1 – Fuselage (Photo Courtesy of FAA) | PDF, 1 page | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
Other NTSB records under UNREG the same tail number, which may have belonged to a different aircraft at the time
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 never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.