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Accidents · NTSB SEA84LA199 · Preliminary: the investigation is not finished

Rockwell THRUSH SR2 accident near Nampa, Idaho, August 14, 1984

On August 14, 1984 at about 2:30 pm local time, a Rockwell THRUSH SR2, registered N5553X, was substantially damaged in an accident near Nampa, Idaho (Hubler Field). 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 November 2, 2026. Docket and reports at the NTSB.

What the record shows

Date
August 14, 1984 · about 2:30 pm local time · cases in 1984
Place
Nampa, Idaho · Hubler Field · cases near this airport · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Rockwell THRUSH SR2
Registration
N5553X · no longer on the register · serial 1753R
Damage
Substantial damage
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

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

THE ACFT BEGAN TO LOSE POWER WHILE ENGAGED IN AERIAL APPLICATION SO THE PLT DUMPED HIS LOAD AND HEADED FOR THE AIRSTRIP.ENROUTE THE POWER DETERIORATED SO THE PLT ELECTED TO LAND. CUTTING THE MIXTURE GAVE THE ENGINE A SURGE WHICH CAUSED AN OVERSHOOT INTO STANDING CORN. THE CAUSE OF THE POWER LOSS WAS FOUND TO BE A FAILED THROTTLE BOLT.

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; rotorcraft: helicopter
  • Flight time: 3,246 hours in all; 1,245 in this make and model; 245 in the last 90 days
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: ctr

The aircraft

  • Airframe total time: 4,658 hours
  • Last inspection: annual inspection, April 11, 1984
  • Maximum gross weight: 6,000 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: P&W R-1340-AN-1 (piston); 0 hours total

The flight

  • Departed from: Nampa ID
  • Destination: Nampa ID
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 200° at 5 knots
  • Visibility: 25 statute miles
  • Sky: clear
  • Temperature: 68°F (20°C), dew point 0°F (-18°C)

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.

Other NTSB records under N5553X the same tail number, which may have belonged to a different aircraft at the time

2018-07-17CEN18LA278 · accident near Vinton, IA · substantial damage · no injuries

Connections how this case links to the rest of the register

Aircraft
Place
Record

The whole map of how records connect · these connections as data: /graph/accident/SEA84LA199.json.

The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.

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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.