Robinson R22 Alpha accident near Mount Clemens, Michigan, July 28, 2004
On July 28, 2004 at about 5:32 pm local time, a Robinson R22 Alpha (helicopter), registered N103MH, was destroyed in an accident near Mount Clemens, Michigan (Selfridge Air Nat'L Guard Base airport). It was a personal flight 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 control in flight for undetermined reasons.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 28, 2004 · about 5:32 pm local time
- Place
- Mount Clemens, Michigan · Selfridge Air Nat'L Guard Base · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Robinson R22 Alpha · all R22 Alphas on the register
- Registration
- N103MH · registry record · serial 0454
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The helicopter impacted terrain while attempting to land at a National Guard Base following a reported vibration in the helicopter. The pilot contacted air traffic control (ATC) stating he was 9 miles south of the base and requesting a clearance to transition through their airspace. The pilot was cleared through the airspace. When the helicopter was about 1 mile south of the base, the pilot reported to ATC that he was "... picking up a vibration." The controller asked the pilot to repeat the transmission and the pilot stated, "Yes sir the helicopter is starting to shake more violently sir." The controller informed the pilot that he could land at the base if he declared an emergency. Approximately 3 1/2 minutes later when the helicopter was 2 miles north of the base at 1,800 feet mean sea level (msl), the pilot reported that he was coming back to land. ATC cleared the pilot to land requesting if at all possible that the pilot land on the south side of the airport. The air traffic controllers viewed the helicopter through binoculars. They reported that they did not notice anything unusual with the helicopter and it appeared normal. One controller stated the helicopter crossed the northern end of the airport at 1,600 feet msl [1,020 above ground level (agl)]. Witnesses reported hearing the engine as the helicopter approached the airport. They stated that once the helicopter was approaching the south side of the airport, the nose pitched up then down. Witnesses described the descent angle as being between 45 and 70 degrees nose down. One controller estimated the descent began at an altitude of 1,400 to 1,500 feet msl [820 to 920 feet agl]. The helicopter impacted the grass leaving a wreckage trail approximately 299 feet long. Examination of the airframe, flight control systems, and engine did not reveal any failure/malfunction which would have resulted in the accident. A sound spectrum examination was performed on a re-recording of the ATC communications to document engine, rotor, or vibration sounds on the tape. This examination revealed that the rotor system background sounds were consistent with the main rotor rating at about 101% rpm. These sounds were consistent throughout the recording including the transmissions after the pilot reported a vibration. In addition, the tape was examined to determine if any airframe or rotor system vibrations could be identified. There were no additional sounds or vibrations identified during any of the transmissions.
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: flight instructor, commercial pilot, private
- Ratings: single-engine land; instructor: helicopter; rotorcraft: helicopter
- Flight time: 6,000 hours in all
- Last flight review: March 11, 2003
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: rgt
- Injury: fatal
The aircraft
- Airframe total time: 5,315 hours
- Last inspection: annual inspection, July 10, 2004; 17 hours since
- Maximum gross weight: 1,370 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-320-B2C (piston); 0 hours total
The flight
- Departed from: PTK Pontiac MI at 4:45 pm
- Destination: MTC Mount Clemens MI
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: at 6 knots
- Visibility: 10 statute miles
- Sky: a few clouds at 5,000 ft
- Temperature: 81°F (27°C), dew point 57°F (14°C)
- Altimeter: 30.04 inHg
- Observation at 5:55 pm from MTC
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.