The U.S. aircraft register, updated daily
Accidents · NTSB LAX88DUM06 · Preliminary: the investigation is not finished

Hiller UH12E accident near Bard, California, August 3, 1988

On August 3, 1988 at about 12:00 pm local time, a Hiller UH12E (helicopter), registered N14633, was substantially damaged in an accident near Bard, California. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). No one was hurt; 1 person was 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 3, 1988 · about 12:00 pm local time
Place
Bard, California · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Hiller UH12E · all UH12Es on the register
Registration
N14633 · no longer on the register · serial 6312869
Damage
Substantial damage
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

The NTSB's narrative final · quoted from the NTSB record

DURING HELICOPTER AERIAL APPLICATION, ENGINE POWER WAS LOST. PLT APPLIED BACK CYCLIC AND TAIL ROTOR CONTACTED TERRAIN, FOLLOWED BY HARD LANDING. INVESTIGATION REVEALED LESS THAN USEABLE FUEL REMAINING.

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: single-engine land; instrument: airplane; instrument: helicopter; rotorcraft: helicopter
  • Flight time: 12,300 hours in all; 3,800 in this make and model; 200 in the last 90 days; 95 in the last 30 days; 11,700 as pilot in command; 1,400 on instruments
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: ctr

The aircraft

  • Airframe total time: 2,631 hours
  • Last inspection: 100-hour inspection, May 22, 1988; 72 hours since
  • Maximum gross weight: 2,750 lb
  • Seats: 3
  • Landing gear: fixed
  • Engine: Lycoming VO-540-C2A (piston); 0 hours total
  • Operator: West Farm Air, INC.

The flight

  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: dusk
  • Visibility: 70 statute miles
  • Sky: clear
  • Temperature: 81°F (27°C), dew point 64°F (18°C)
  • Altimeter: 29.00 inHg

Injuries

FatalSeriousMinorNone
Crew1

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.