The U.S. aircraft register, updated daily
Accidents · NTSB SEA84LA137 · Preliminary: the investigation is not finished

Grumman G-164B accident near Spokane, Washington, June 19, 1984

On June 19, 1984 at about 3:00 pm local time, a Grumman G-164B, registered N48681, was destroyed in an accident near Spokane, Washington. 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
June 19, 1984 · about 3:00 pm local time
Place
Spokane, Washington · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Grumman G-164B · all G-164Bs on the register
Registration
N48681 · no longer on the register · serial 1138
Damage
Destroyed
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

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

THE ENG LOST POWER DURING AN AERIAL APPLICATION FLT, THEN AS THE PLT WAS MAKING A FORCED LANDING, THE ACFT STRUCK TELEPHONE WIRES. AFTER HITTING THE WIRES, THE ACFT STRUCK THE GROUND & CARTWHEELED. AN EXAM REVEALED THAT A FAILURE OF THE CAM RING SYSTEM HAD OCCURRED.

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
  • Flight time: 8,813 hours in all; 200 in the last 90 days
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: ctr

The aircraft

  • Airframe total time: 2,000 hours
  • Last inspection: annual inspection
  • Maximum gross weight: 6,075 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: P&W R-985-AN1 (piston); 0 hours total

The flight

  • Departed from: NONE Spokane WA at 2:35 pm
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 130° at 5 knots
  • Visibility: 20 statute miles
  • Sky: overcast at 25,000 ft; scat at 10,000 ft
  • Temperature: 61°F (16°C), dew point 46°F (8°C)
  • Altimeter: 29.00 inHg
  • Observation at 4:47 pm from SFF, 7 miles away

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.