ANC13CA105

NTSB accident investigation · Piper PA 18 · Big Lake, AK · September 24, 2013

Accident · No injuriesData collectionFinal report
Date
September 24, 2013, 15:30 local (23:30 UTC)
Place
Big Lake, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1214APiper PA 18
Defining event
Landing-landing roll: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report December 2, 2013
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20130924020989A
Case key
88125

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

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Probable cause

The pilot's selection of unsuitable terrain for landing, resulting in abnormal contact with terrain.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Runway/land/takeoff/taxi surfaceEnvironmental issues › Physical environment · Contributed to outcomePiper PA-18: 3 casesAll aircraft: 253 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

During the landing roll on a gravel bar adjacent to a river, the airplane's right main landing gear contacted soft terrain. After contact with the soft terrain, the right main landing gear separated from the airframe and the airplane came to rest upright. The airplane sustained substantial damage to its fuselage. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

During the landing roll on a gravel bar adjacent to a river, the airplane's right main landing gear contacted soft terrain. After contact with the soft terrain, the right main landing gear separated from the airframe and the airplane came to rest upright. The airplane sustained substantial damage to its fuselage. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N1214A
Reported as
Piper PA 18 (105SPECIAL)
Category
Airplane
Serial number
18-828
Built
1951
Airframe hours
3,870
Engine
Lycoming O-290 SERIES, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 13, 2013
Departed
PATK · Talkeetna, AK
Destination
Big Lake, AK

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
76
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
June 5, 2013
Seat
Front
Restraint
3-point
Flight hours
4,000 total · 3 in this make and model · 4,000 as pilot in command · 35 in the last 90 days · 30 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
48 °F

Docket · 1

The files NTSB released with the investigation on November 20, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 468 KB in all.

FAA reports on this event · 1

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