NTSB CAROL · Event
Event SEA04LA077
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 ↗.
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