Bell 47-G accident near Aguadilla, Puerto Rico, May 11, 1991
On May 11, 1991 at about 3:15 pm local time, a Bell 47-G (helicopter), registered N955B, was destroyed in an accident near Aguadilla, Puerto Rico. It was a personal flight under general aviation rules (Part 91). No one was hurt; 3 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE IMPROPER IN FLIGHT PLANNING/DECISION OF THE PILOT-IN-COMMAND TO CONDUCT AN OUT-OF-GROUND-EFFECT HOVER WITH A RIGHT CROSSWIND. THIS RESULTED IN AN IN FLIGHT LOSS OF CONTROL DUE TO SETTLING WITH POWER AND IN FLIGHT COLLISION WITH TERRAIN.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 11, 1991 · about 3:15 pm local time
- Place
- Aguadilla, Puerto Rico
- Type
- Accident
- Injuries
- No one was hurt; 3 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Bell 47-G · all 47-Gs on the register
- Registration
- N955B · registry record · serial 711
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE HELICOPTER PILOT WAS OBSERVED BY AN NTSB INVESTIGATOR AND A U.S. COAST GUARD PILOT TO CONDUCT AN OUT-OF-GROUND-EFFECT HOVER WITH A RIGHT CROSSWIND IN THE VICINITY OF A PREVIOUS CRASH SITE. THE HELICOPTER WAS OBSERVED TO MOVE BACKWARDS WHILE DESCENDING WITH A SLOW LEFT TURN. THE ENGINE RPM WAS HEARD TO INCREASE AS THE HELICOPTER DESCENDED AND COLLIDED WITH THE TERRAIN. THE HELICOPTER WAS DESTROYED BY FIRE. THE COMMERCIAL PILOT AND TWO PASSENGERS WERE NOT INJURED. THE PILOT STATED IN AN INTERVIEW THAT HE ENCOUNTERED SETTLING WITH POWER. HE FURTHER STATED HE WAS UNABLE TO INCREASE THE THROTTLE, WHICH WAS NOT SUBSTANTIATED BY EYEWITNESSES WHO HEARD AN INCREASE IN ENGINE RPM PRIOR TO THE COLLISION WITH TERRAIN.
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: commercial pilot
- Ratings: rotorcraft: helicopter
- Flight time: 260 hours in all; 220 in this make and model
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Last inspection: inspection type not recorded; 0 hours since
- Maximum gross weight: 2,350 lb
- Seats: 3
- Landing gear: fixed
- Engine: Franklin 6V-350-A (piston); 0 hours total
- Fire on the ground
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 090° at 10 knots
- Visibility: 15 statute miles
- Sky: not recorded; scat at 12,000 ft
- Temperature: 82°F (28°C), dew point 70°F (21°C)
- Observation at 2:49 pm from JBQ, 6 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 2 |
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.
Other NTSB records under N955B 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.