Piper PA-28R-200 accident near Concord, Massachusetts, April 19, 1984
On April 19, 1984 at about 3:39 am local time, a Piper PA-28R-200, registered N4467X, was destroyed in an accident near Concord, Massachusetts (Hanscom Field). It was a business flight under general aviation rules (Part 91). 1 person was killed. The weather was instrument conditions (cloud, fog or low visibility).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 19, 1984 · about 3:39 am local time
- Place
- Concord, Massachusetts · Hanscom Field
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- instrument conditions (cloud, fog or low visibility)
- Aircraft
- Piper PA-28R-200 · all PA-28R-200s on the register
- Registration
- N4467X · no longer on the register · serial 28-7625052
- Damage
- Destroyed
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT CRASHED INTO A HOUSE WHILE ON AN ILS APPROACH TO RWY 11 AT HANSCOM FIELD. SHORTLY BEFORE THE ACFT HAD REACHED THE OUTER MARKER (AND AFTER THE HAND OFF FROM BOSTON APPROACH CONTROL TO HANSCOM TOWER) AN ALTITUDE ALERT ON N4467X WAS RECEIVED BY THE BOSTON APPROACH RADAR CONTROLLER. HE NOTIFIED THE HANSCOM CONTROLLER WHO THEN INFORMED THE PLT OF THE ALERT, TO WHICH THE PLT REPLIED HE WAS AT 1400 FT AND CROSSING THE OUTER MARKER. THIS WAS THE THIRD INSTANCE DURING THE FLT WHERE A DISCREPANCY BETWEEN THE BAROMETRIC ALTIMETER AND THE ENCODING ALTIMETER CAME TO LIGHT. INVESTIGATION ALSO REVEALED THAT THE ACCIDENT OCCURRED AT THE END OF AN 18 HR WORK DAY FOR THE PLT WHO HAD ALSO BEEN ILL WITH THE FLU DURING THE WEEKEND PRECEEDING THE ACCIDENT.
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: private
- Ratings: single-engine land; instrument: airplane
- Flight time: 435 hours in all; 78 in this make and model; 57 in the last 90 days; 25 in the last 30 days; 269 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 3,944 hours
- Last inspection: annual inspection, March 20, 1984; 28 hours since
- Maximum gross weight: 2,650 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming IO-360-C1C (piston); 0 hours total
- Operator: Haski Aviation
The flight
- Departed from: 8G7 Zelienople PA
- Destination: BED Bedford MA
- Flight plan: IFR
- Runway 11, 7,001 ft by 150 ft
Weather at the time
- Light: night, dark
- Wind: from 050° at 7 knots
- Visibility: 1 statute miles
- Sky: overcast at 600 ft; not recorded at 600 ft
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
- Altimeter: 29.00 inHg
- Observation at 3:45 am from BED, 3 miles away
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.