SEA04LA077

NTSB accident investigation · Piper PA-18-105 · Laurel, MT · May 1, 2004

Accident · No injuriesLimited investigationFinal report
Date
May 1, 2004, 12:45 local (18:45 UTC)
Place
Laurel, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5483HPiper PA-18-105
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 2004
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20040501007079A
Case key
59154

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

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

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterManeuvering
Altitude/clearance - not maintainedPilot in commandCause
Terrain condition - water

Analysis

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.

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.

Aircraft

Registration
N5483H
Reported as
Piper PA-18-105
Category
Airplane
Serial number
18-74
Airframe hours
3,317
Engine
Lycoming O-360-C2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Harmon, Thomas M.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 17, 2004 · 15 hours before
Departed
BIL · Billings, MT

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
48
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
November 15, 2003
Seat
Front
Flight hours
903 total · 13 in this make and model · 903 as pilot in command · 76 in the last 90 days · 26 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 21 °F
Altimeter
30.26 inHg
Observed at
BIL, 15 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N5483H · 1

Matched to the same aircraft by N-number and date.