Bell 47D-1 accident near Taft, California, August 5, 1987
On August 5, 1987 at about 10:15 pm local time, a Bell 47D-1 (helicopter), registered N917B, was substantially damaged in an accident near Taft, California (Taft airport). It was a business flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
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
- August 5, 1987 · about 10:15 pm local time
- Place
- Taft, California · Taft · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Bell 47D-1 · all 47D-1s on the register
- Registration
- N917B · registry record · serial 606
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PLT RPRTD THE ENG LOST POWER AT ABOUT 300' AGL AFTER THE HELICOPTER HAD FLOWN APRX 2.7 HRS WITHOUT REFUELING. HE INITIATED AN AUTOROTATIVE LANDING; HOWEVER, BEFORE TOUCHDOWN, THE MAIN ROTOR BLADES CONTACTED & SEVERED THE TAIL BOOM. AN EXAM REVEALED THE FUEL TANK WAS EMPTY. NO SIGNS OF FUEL LEAKAGE WERE FOUND. THE HELICOPTER HAD BEEN EQUIPPED WITH A 210 HP FRANKLIN ENG IAW A SUPPLEMENTAL TYPE CERTIFICATE. THERE WAS NO FACTORY DATA ON FUEL CONSUMPTION RATES FOR THIS CONFIGURATION. OTHER OPERATORS, WHO OPERATED THIS MAKE & MODEL OF HELICOPTER, ESTIMATED THE FUEL CONSUMPTION WAS APRX 12 GAL/HR. AFTER THE ACDNT, THE PLT RPRTD HE MEASURED THE FUEL CAPACITY OF THE HELICOPTER FUEL CELL. HE STATED THE CELL WOULD HOLD ONLY 26.5 GAL OF FUEL, INSTEAD OF '29' AS INDCD BY A STICK-ON MARKER THAT HAD BEEN INSTALLED ON A PREVIOUSLY PAINTED PLACARD.
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: multi-engine land; single-engine land; instructor: airplane single-engine; instrument: airplane; rotorcraft: helicopter
- Flight time: 1,913 hours in all; 474 in this make and model; 169 in the last 90 days; 91 in the last 30 days; 1,677 as pilot in command; 227 on instruments
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 63,465 hours
- Last inspection: annual inspection, July 1, 1987; 767 hours since
- Maximum gross weight: 2,450 lb
- Seats: 2
- Landing gear: fixed
- Engine: Franklin 6V4 (piston); 0 hours total
The flight
- Departed from: BFL Bakersfield CA at 8:20 pm
- Destination: L17 Taft CA
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 320° at 12 knots
- Visibility: 30 statute miles
- Sky: clear
- Temperature: 63°F (17°C), dew point 0°F (-18°C)
- Altimeter: 29.00 inHg
- Observation at 10:50 pm from BFL, 25 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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.
Other NTSB records under N917B 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.