ANC02LA112

NTSB accident investigation · Piper PA-18 · Anchorage, AK · September 2, 2002

Accident · No injuriesLimited investigationFinal report
Date
September 1, 2002, 19:00 local (Sep 2, 2002, 03:00 UTC)
Place
Anchorage, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6981BPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report April 18, 2003
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20020901025989A
Case key
55631

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 failure to attain the proper touchdown point on a remote airstrip, and his failure to perform a go-around that resulted in the airplane overrunning the end of the strip. Factors in the accident were the pilot's inadequate evaluation of a tailwind condition, and a wet landing surface.

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.

OverrunLanding - roll
Weather evaluation - inadequatePilot in commandFactor
Weather condition - tailwindFactor
Proper touchdown point - not attainedPilot in commandCause
Terrain condition - wetFactor
Go-around - not performedPilot in commandCause
Landing gear,main gear - overload

Analysis

The private certificated pilot was landing at a remote airstrip. The landing strip, oriented southeast/northwest, is about 600 feet long, by 15 feet wide, and is positioned on a ridge of a mountain. The pilot said he was landing toward the southeast, and touched down on the strip about 1/3 of its total distance beyond the landing threshold. He applied the airplane's brakes, but the tires began to slide on wet grass. The airplane departed off the end of the landing strip. The left main landing gear tire struck a hole about 300 feet past the end of the landing strip, and the left main landing gear was sheared off. The airplane received damage to the propeller, the left wing lift strut, and the left wing. The pilot reported that after the accident, he utilized a hand-held wind meter and discovered he had landed with about a 5 knot tailwind. The Pilot/Operator Aircraft Accident/Incident Report (NTSB Form 6120.1) submitted by the pilot, contained an optional area for recommendations as to how the accident could have been prevented. The pilot indicated that his recommendation was, "Perform go-around instead of landing long."

Factual narrative

On September 1, 2002, about 1900 Alaska daylight time, a tundra tire-equipped Piper PA-18 airplane, N6981B, sustained substantial damage when the airplane collided with a ditch during an overrun while landing at a remote airstrip, about 32 miles west of Anchorage, Alaska. The airplane was being operated as a Title 14, CFR Part 91 visual flight rules (VFR) cross-country personal flight when the accident occurred. The airplane was operated by the pilot. The private certificated pilot, and the sole passenger, were not injured. Visual meteorological conditions prevailed. The flight originated at the Lake Hood Strip, Anchorage, about 1830.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on September 4, the pilot reported that he was landing near the top of Little Mount Susitna. The landing strip, oriented southeast/northwest, is about 600 feet long, by 15 feet wide, and is positioned on a ridge of the mountain. The pilot said he was landing toward the southeast, but touched down on the strip about 1/3 of its total distance beyond the landing threshold. He applied the airplane brakes, but the airplane tires began to slide on wet grass. The airplane departed off the end of the landing strip into an area of low bushes on a down sloping portion of the landing area. The left main landing gear tire struck a hole about 300 feet past the end of the landing strip. The airplane's left main landing gear was sheared off. The pilot reported that after the accident, he utilized a hand-held wind meter, and discovered about a five knot tailwind. The airplane received damage to the propeller and the left wing lift strut. Additionally, the outboard end of the left wing was bent upward about 20 degrees.

The Pilot/Operator Aircraft Accident/Incident Report (NTSB Form 6120.1) submitted by the pilot, contained an optional area for recommendations as to how the accident could have been prevented. The pilot indicated that his recommendation was, "Perform go-around instead of landing long."

Aircraft

Registration
N6981B
Reported as
Piper PA-18
Category
Airplane
Serial number
18-5103
Airframe hours
4,387
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Monte Townsend
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 6, 2002 · 65 hours before
Departed
Z41 · Anchorage, AK
Destination
Anchorage, AK
Airport
Little Mt. Susitna, runway 13, 600 × 15 ft, grass/turf

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
46
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
510 total · 390 in this make and model · 510 as pilot in command · 61 in the last 90 days · 37 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots, gusting 10
Visibility
50 statute miles
Lowest ceiling
None
Temperature
55 °F

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 N6981B · 2

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