The U.S. aircraft register, updated daily
Accidents · NTSB DEN87LA158 · Preliminary: the investigation is not finished

Cessna 170B accident near Monument Valley, Utah, June 16, 1987

On June 16, 1987 at about 1:30 pm local time, a Cessna 170B, registered N2398D, was substantially damaged in an accident near Monument Valley, Utah. It was a personal 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
June 16, 1987 · about 1:30 pm local time
Place
Monument Valley, Utah · map
Type
Accident
Injuries
No one was hurt; 2 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Cessna 170B · all 170Bs on the register
Registration
N2398D · registry record · serial 20550
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE PLT LANDED TO TAKE PICTURES IN MONUMENT VALLEY OFF DESIGNATED ARPT. ON TAKEOFF THE PLT REPORTED THAT THE ACFT COULD NOT MAINTAIN SUFFICIENT ALTITUDE AND THAT HE HAD TO MAKE A FORCED LANDING. THE PLT DID NOT REPORT ANY MECHANICAL FAILURE OR MALFUNCTION.

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; single-engine sea
  • Flight time: 3,040 hours in all; 701 in this make and model; 35 in the last 90 days; 3,000 as pilot in command
  • Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 2,774 hours
  • Last inspection: annual inspection, March 28, 1987; 32 hours since
  • Maximum gross weight: 2,200 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Continental C145 (piston); 0 hours total

The flight

  • Departed from: OV7 Keyenta AZ at 1:30 pm
  • Destination: BDG Blanding UT
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 15 statute miles
  • Sky: clear
  • Temperature: 68°F (20°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Crew1
Passengers1

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.