Amateur-built Zenith CH 601HDS accident near Leominster, Massachusetts, October 26, 2004
On October 26, 2004 at about 7:40 pm local time, a amateur-built Zenith CH 601HDS, registered N166DK, was destroyed in an accident near Leominster, Massachusetts (Fitchburg Municipal airport). It was a flight test under general aviation rules (Part 91). 1 person was killed. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
A loss of aircraft control for an undetermined reason.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- October 26, 2004 · about 7:40 pm local time
- Place
- Leominster, Massachusetts · Fitchburg Municipal · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built Zenith CH 601HDS
- Registration
- N166DK · registry record · serial 6-3337
- Damage
- Destroyed
- Flight
- Flight test · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
According to the owner/builder of the airplane, which was being flown for the first time, both he and the pilot conducted a thorough preflight, and the pilot subsequently started the airplane per the start-up checklist, with the owner/builder looking over his shoulder. The owner then reminded the pilot to remove the Ballistic Recovery System (BRS) safety pin prior to takeoff, and to double check the trim indications. After taxiing to the run-up area, the owner/builder reminded the pilot again, via hand-held radio, to double check the trim indications and make sure the BRS safety pin was removed. The pilot then taxied the airplane onto the runway, announced his intentions, and stated that it was the airplane's first flight. The owner/builder observed the first part of the takeoff roll to be "completely normal, and there was no side-to-side motion of the aircraft and a rapid acceleration as he brought in full power." However, as soon as the airplane lifted off the runway, it climbed to approximately 40-50 feet, while simultaneously veering to the left. It appeared that the pilot was "fighting for control" as the airplane "veered slightly back towards the runway." The airplane then veered back towards the left, toward a tree line. As it approached the tree line, the engine noise grew "noticeably louder," and the airplane went into a "very nose-high attitude." The airplane "appeared to hang on the prop as it was pulled up and over [the] trees;" however, no stall occurred, and the engine "appeared to be working without any issue." A certificated flight instructor saw the accident airplane 20-50 feet above the runway, near runway centerline, "but apparently experiencing what [he] believed was a stability or control problem." He saw the airplane "oscillating (porpoising?) in pitch, wings approximately level." The pilot then appeared to gain pitch control, and the airplane began a climbing left turn about 90 degrees from the runway heading, toward a tree line. The airplane then descended below and beyond the tree line, but subsequently came back up above it, and made another left turn back toward the airport. The airplane then "banked steeply left, pitched down,...went into the trees in a steep nose-down and banked attitude (possibly stalled)," and impacted a machine shop. The owner/builder also noted that the altitude of the airplane was so low during the flight that the BRS could not have been effectively deployed. In addition, the pilot appeared to have a "control issue from the moment the aircraft left the ground." Because the airplane was consumed in an intense post-impact fire, a detailed examination of the wreckage could not be made. The certificated airline transport pilot had accrued over 5,250 hours of flight time.
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
Pilot
- Certificate: airline transport pilot
- Ratings: multi-engine land; multi-engine sea; single-engine land; single-engine sea; rotorcraft: glider
- Flight time: 5,250 hours in all
- Medical certificate: Class 2
- Seat: left
- Injury: fatal
The aircraft
- Airframe total time: 0 hours
- Last inspection: continuous airworthiness programme, October 1, 2004; 0 hours since
- Maximum gross weight: 1,200 lb
- Seats: 2
- Landing gear: fixed
- Engine: Subaru EA-81 (piston); 0 hours total
- Fire on the ground
The flight
- Departed from: FIT Fitchburg MA
- Flight plan: none
- Runway 32, 4,510 ft by 100 ft
Weather at the time
- Light: daylight
- Wind: from 310° at 9 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 57°F (14°C), dew point 36°F (2°C)
- Altimeter: 30.07 inHg
- Observation at 7:52 pm from FIT
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
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.
