ANC84LA162

NTSB accident investigation · Piper PA-18-150 · Rohn River, AK · September 1, 1984

Accident · No injuriesLimited investigationFinal report
Date
September 1, 1984, 07:30 local (15:30 UTC)
Place
Rohn River, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9474DPiper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19840901050639A
Case key
4360

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

On this page

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.

Loss of control - on ground/waterTakeoff - roll/run
Weather condition - high density altitudeFactor
Aircraft weight and balance - not performedPilot in commandCause
Performance data - not understoodPilot in commandCause
Performance data - disregardedPilot in commandCause
Directional control - not maintainedPilot in commandCause
Ground loop/swerve - uncontrolledPilot in commandCause

Analysis

The acft would not lift off in the distance the plt thought. The density alt was near 1500 ft and the plt had 130 lbs in the rear seat and baggage area. The plt said that the acft bounced during the roll and then ground looped.

Aircraft

Registration
N9474D
Reported as
Piper PA-18-150
Category
Airplane
Serial number
186819
Airframe hours
1,633
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Len O. Hannaman
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 15, 1984

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
36
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
270 total · 130 in this make and model · 100 in the last 90 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
50 statute miles
Lowest ceiling
None
Temperature
39 °F

FAA reports on this event · 1

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