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Accidents · NTSB SEA88LA126 · Preliminary: the investigation is not finished

Beech C23 accident near The Dalles, Oregon, July 13, 1988

On July 13, 1988 at about 1:30 am local time, a Beech C23, registered N18823, was substantially damaged in an accident near The Dalles, Oregon (The Dalles Muni airport). It was an instructional flight under general aviation rules (Part 91). 2 people had minor injuries. 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 13, 1988 · about 1:30 am local time
Place
The Dalles, Oregon · The Dalles Muni · map
Type
Accident
Injuries
2 people had minor injuries.
Weather
visual conditions (good weather)
Aircraft
Beech C23 · all C23s on the register
Registration
N18823 · no longer on the register · serial M 1951
Damage
Substantial damage
Flight
Instructional flight · general aviation rules (Part 91)

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

CFI UNDERESTIMATED FUEL CONSUMPTION ON MULTI-STOP CROSS COUNTRY AND DID NOT VISUALLY CHECK FUEL REMAINING PRIOR TO LAST DEPARTURE. FUEL EXHAUSTION OCCURRED 18 MINUTES INTO FLIGHT. ACFT FLIPPED INVERTED ON FORCED LANDING.

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: airline transport pilot, flight instructor, commercial pilot
  • Ratings: single-engine land; instructor: airplane single-engine; instrument: airplane
  • Flight time: 960 hours in all; 30 in this make and model; 150 on instruments
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 1,280 hours
  • Last inspection: annual inspection, July 4, 1988; 8 hours since
  • Maximum gross weight: 2,450 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming O-360-A4K (piston); 0 hours total

The flight

  • Departed from: 4S2 Hood River OR at 1:05 am
  • Destination: TTD Troutdale OR
  • Flight plan: IFR
  • Runway 12, 5,097 ft by 150 ft
  • A second pilot was aboard

Weather at the time

  • Light: daylight
  • Visibility: 30 statute miles
  • Sky: broken clouds at 9,000 ft; scat at 5,000 ft
  • Temperature: 0°F (-18°C), dew point 0°F (-18°C)
  • Observation at 1:00 am from DLS

Injuries

FatalSeriousMinorNone
Crew2

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.