ANC05CA080

NTSB accident investigation · Piper PA-18 · Delta Junction, AK · May 23, 2005

Accident · No injuriesData collectionFinal report
Date
May 23, 2005, 10:00 local (18:00 UTC)
Place
Delta Junction, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1087APiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 2005
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-FAI FSDO 01
FAA report
20050523011229A
Case key
61657

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's selection of unsuitable terrain for landing, which resulted in an overrun. A factor contributing to the accident was rough and uneven terrain.

Analysis

The commercial certificated pilot was transporting hunting and camp supplies to a remote area in support of a hunting party. He landed the tundra tire-equipped airplane on a remote mountain ridge where previous wheel tracks were visible. During the landing roll, the pilot said that when he applied the brakes, the large tundra tires began to bounce over the rough terrain, and he was being careful not to apply excessive braking action. The airplane overran the pilot's intended landing area, and the right main tire encountered a depression. The right wing and propeller struck the ground. The aircraft mechanic who repaired the airplane reported that he repaired the leading edge of the right wing, and replaced a wing nose rib.

Factual narrative

On May 23, 2005, about 1000 Alaska daylight time, a tundra tire-equipped Piper PA-18 airplane, N1087A, sustained substantial damage when it encountered rough terrain at a remote landing area, about 56 miles northeast of Delta Junction, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country air taxi flight under Title 14, CFR Part 135, when the accident occurred. The airplane was operated by the pilot under the business name of WRAM, Fairbanks, Alaska. The commercial certificated pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed, and a VFR flight plan was filed. The flight originated at the Chena Marina Airport, Fairbanks, about 0830.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on June 6, the pilot reported that he was transporting hunting and camp supplies to a remote area in support of a three-person hunting party. He said that he landed on a mountain ridge where previous wheel tracks were visible. During the landing roll, the pilot said that when he applied the brakes, the large tundra tires began to bounce over the rough terrain, and he was being careful not to apply excessive braking action. The airplane overran the pilot's intended landing area, and the right main tire encountered a depression. The right wing and propeller struck the ground.

The pilot indicated that after examining the airplane for signs of extreme damage, and finding none, he flew the airplane to the Dry Creek Airstrip where the hunting clients were waiting for transport.

During a telephone conversation on June 6, with the aircraft mechanic who repaired the airplane, the mechanic reported that he replaced a wing nose rib in the right wing, and repaired the leading edge of the wing.

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
Brakes(normal) - not usedPilot in commandCause
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - rough/unevenFactor
Nose downLanding - roll

Aircraft

Registration
N1087A
Reported as
Piper PA-18
Category
Airplane
Serial number
18-673
Airframe hours
5,835
Engine
Lycoming O-320-B2B, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Patrick Valkenburg
Airworthiness certificate
Standard, Normal
Departed
AK28 · Fairbanks, AK
Destination
Delta Junction, AK
Flight plan
VFR

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
54
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2
Flight hours
11,300 total · 3,200 in this make and model · 120 in the last 90 days · 30 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
30 statute miles
Lowest ceiling
None
Temperature
45 °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 N1087A · 1

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