Premium research interface

The modern interface for aviation safety intelligence.

Search investigations, review source evidence, monitor watched reports, and trace long-term patterns from one calm, data-first workspace.

63k+
Reports indexed
1940-2026
Coverage
Recent
Last data refresh
Featured Report

Loading…

Loading featured report…

Loading…
Open Report

Safety trends by operating rule

Track fatal and non-fatal accident patterns across Part 91, Part 135, and Part 121 operations.

Loading trend charts…

Browse the aviation graph

Move quickly by aircraft, airport, operator, and time with indexes built for research, not wandering.

Last Data Update

By Decade

By Month

Aircraft Manufacturer

More manufacturers

Airports

More airports

Operators

More operators

About

Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

The goal is practical safety education: make it faster to find relevant investigations, compare similar events, review factual records, and understand the evidence behind probable-cause and preliminary reports.

The investigative work and source records belong to the National Transportation Safety Board and the published investigation record. This site is not affiliated with or endorsed by the NTSB.

FAQs

NTSB Report

December 18, 1997 · Cessna 177 · N2988X

Thompson Falls, MT

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
December 18, 1997
Injury Outcomes
No injuries (1 uninjured)
Location
Thompson Falls, MT
Aircraft
Cessna 177
Tail Number
N2988X
Operator
Schauman Tor
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA98LA025

The student pilot, on his first solo flight, allowed the aircraft to touch down on all three wheels simultaneously, during which a porpoise developed. Four additional nose-down ground impact cycles followed before the aircraft came to a stop. The pilot did not attempt a go-around maneuver.

NTSB Probable Cause

The student pilot's improper remedial action when confronted with a porpoised landing. A factor was his failure to execute a go-around maneuver.

Full Narrative

On December 18, 1997, approximately 1030 mountain standard time, a Cessna 177, N2988X, in the process of re-registration, and being flown by a student pilot, was substantially damaged, during a hard landing at Thompson Falls, Montana. The student pilot was uninjured. Visual meteorological conditions prevailed and no flight plan had been filed. The flight, which was the student's first supervised solo, was to have been operated under 14CFR91, and originated from the Thompson Falls airport approximately 1025. The student pilot reported that he corrected for a momentary left crosswind (gust) and then the aircraft "dropped to the ground touching all three wheels simultaneously." He reported that "the plane bumped up in the air with a slight nose down attitude" and that the "plane stopped after the fifth jump." He further reported that after the first excursion the "(yoke froze)" and that a "(go around was not possible)." He did not explain why he felt he could not execute a go-around maneuver and reported that there was no mechanical malfunction with the aircraft. The instructor pilot, who interviewed the student pilot and examined the marks on the runway as well as the aircraft damage, reported that the aircraft porpoised approximately five times during which the propeller impacted the runway.

Flight

Event TypeAccident
Event Time10:30 MST
Nearest AirportThompson Falls (0nm)
Runway25
Runway Length4200 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 177
Tail NumberN2988X
Aircraft CategoryAir
DamageSubstantial
OperatorSchauman Tor
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A1F6D · Reciprocating · 180
Seats4

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 53 · Third Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility6 sm
CeilingOvercast 4000 ft
Temperature / Dew Point28 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data