Skip to content

Atlas / NTSB / SEA04LA077

NTSB CAROL · Event

Event SEA04LA077

2004-05-01 Laurel, Montana, United States None 1 aircraft Status: Completed

Registry · N5483H

FAA Aircraft Registry record.

Make / Model

PIPER PA-18-105 SPECIAL

Year of manufacture

1950 · 54 years old at event

Engine

LYCOMING 0-290 SERIES (140 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19601121

ADS-B equipped

Yes — Mode-S A6F86D

Registrant of record

KRINER STEVEN J

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's failure to maintain adequate clearance/altitude while maneuvering resulting in the inadvertent in-flight collision with water/terrain.

Factual narrative

On May 1, 2004, approximately 1245 mountain daylight time, a Piper PA-18-105, N5483H, registered to and being operated/flown by a private pilot sustained substantial damage during inadvertent flight into terrain while maneuvering approximately two nautical miles south of Laurel, Montana. Neither the pilot nor the passenger was injured. Visual meteorological conditions prevailed and no flight plan had been filed. The local flight, which was personal, was operated under 14 CFR 91, and originated from Billings, Montana, at 1157. The pilot reported that he and his wife were sightseeing along the Yellowstone River just south of Laurel, Montana, when he spotted what he described as unusual animal tracks on a gravel sand bar adjacent to the river. He applied one notch of flaps and executed a 180 degree course reversal for a "low and slow look." He further reported "...In a moment I was hitting the water and then flipped forward and onto the back of the plane..." (refer to attached NTSB Form 6120.1/2. The pilot reported that there was no mechanical malfunction or failure with the aircraft or its powerplant/systems. The pilot reported that he and his wife were sightseeing along the Yellowstone River just south of Laurel, Montana, when he spotted what he described as unusual animal tracks on a gravel sand bar adjacent to the river. He applied one notch of flaps and executed a 180 degree course reversal for a "low and slow look." The aircraft subsequently struck the water and nosed over. The pilot reported that there was no mechanical malfunction or failure with the aircraft or its powerplant/systems. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_2004_SEA04LA077.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.