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SEA98LA025

1997-12-18 · THOMPSON FALLS, Montana, United States · None · 1 aircraft · Status: Completed

Airport THM

Current FAA registration · N2988X

Make / Model
CESSNA 177
Year of manufacture
1968 · 29 years old at event
Engine
LYCOMING O&VO-360 SER (180 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19780601
ADS-B equipped
Yes — Mode-S A316B8

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

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

Factual 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. 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. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1997_SEA98LA025.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

Matched on aircraft type or causal vocabulary (go-around). All research papers