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Accidents · NTSB SEA87LA143 · Preliminary: the investigation is not finished

Cessna 170B accident near Coeur D'Alene, Idaho, July 21, 1987

On July 21, 1987 at about 2:00 pm local time, a Cessna 170B, registered N3063A, was substantially damaged in an accident near Coeur D'Alene, Idaho. It was a personal flight under general aviation rules (Part 91). 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
July 21, 1987 · about 2:00 pm local time
Place
Coeur D'Alene, Idaho · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Cessna 170B · all 170Bs on the register
Registration
N3063A · registry record · serial 25707
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

ON INITIAL CLIMB A PARTIAL LOSS OF POWER OCCURRED AND THE PILOT MADE A FORCED LANDING IN A WHEAT FIELD. DURING LANDING ROLL THE AIRCRAFT'S LEFT MAIN GEAR STRUCK AN IRRIGATION PIPE AND THE AIRCRAFT NOSED OVER INVERTED. NO EVIDENCE OF A PREIMPACT MECHANICAL FAILURE/MALFUNCTION WAS FOUND.

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: private
  • Ratings: single-engine land
  • Flight time: 330 hours in all; 330 in this make and model; 11 in the last 90 days; 296 as pilot in command
  • Medical certificate: Class 3 (valid medical--no waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 2,500 hours
  • Last inspection: annual inspection
  • Maximum gross weight: 2,200 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Continental C-145-2 (piston); 0 hours total
  • Operator: Hern Ironworks, INC.

The flight

  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 340° at 19 knots
  • Visibility: 50 statute miles
  • Sky: clear
  • Temperature: 59°F (15°C), dew point 55°F (13°C)
  • Altimeter: 29.00 inHg
  • Observation at 1:40 pm from COE

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.