ANC05LA073

NTSB accident investigation · Interstate S-1A · Palmer, AK · May 7, 2005

Accident · No injuriesLimited investigationFinal report
Date
May 7, 2005, 12:30 local (20:30 UTC)
Place
Palmer, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N37209Interstate S-1A
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2005
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20050507011359A
Case key
61447

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 misjudged distance and speed, which resulted in an overrun during the landing roll, and subsequent nose over. Factors contributing to the accident were a tailwind and a short landing area.

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 condition - tailwindFactor
Terrain condition - short runway/landing areaFactor
Distance/speed - misjudgedPilot in commandCause
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - soft
Nose overLanding - roll

Analysis

The private certificated pilot was landing on a remote airstrip that was about 500 feet long and 60 feet wide. He said he flew several passes over the airstrip, and touched down toward the southeast. The airplane bounced slightly and floated, and when it touched down again, he applied full engine power to abort the landing. He said the airplane did not seem to want to fly, and he pulled the engine power to idle and applied the brakes. The airplane overran the end of the strip, into an area of brush, encountered soft terrain, and nosed over. The airplane received structural damage to the right wing lift strut and windshield. After the accident, the pilot reported that the wind appeared calm, but he thought that he may have encountered a slight tailwind during the landing.

Factual narrative

On May 7, 2005, about 1230 Alaska daylight time, a wheel-equipped Interstate S-1A airplane, N37209, sustained substantial damage when it nosed over after overrunning a remote airstrip, about 25 miles east of Palmer, Alaska. The airplane was being operated as a visual flight rules (VFR) local area personal flight under Title 14, CFR Part 91, when the accident occurred. The airplane was operated by the pilot. The private certificated pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The flight originated from a private airstrip, at Wasilla, Alaska, about 1100. No flight plan was filed, nor was one required.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on May 8, the pilot reported that he was landing on an airstrip in an area known as Grasshopper Valley. The airstrip is about 500 feet long, and 60 feet wide, oriented northwest/southeast, and has no wind indicators. The pilot said he flew several passes over the airstrip, and then landed toward the southeast. He said when the airplane touched down, it bounced slightly and floated. When it touched down again, he applied full engine power to abort the landing. He said the airplane did not seem to want to fly, and he pulled the engine power to idle and applied the brakes. The airplane overran the end of the strip, into an area of brush, encountered soft terrain, and nosed over. The airplane received structural damage to the right wing lift strut and the windshield. After the accident, the pilot reported that the wind appeared calm, but he thought that he may have encountered a slight tailwind during the landing.

Following the accident, the pilot said he turned the airplane's emergency locator transmitter (ELT) off and removed its batteries. He then began to hike out of the area. The airplane's ELT was detected by the Alaska Rescue Coordination Center. Search airplanes located the accident site, and a rescue helicopter was dispatched to the scene about 1800. The helicopter crew did not find the pilot at the scene, but located him after dark, as he was pitching a tent for the night.

Aircraft

Registration
N37209
Reported as
Interstate S-1A
Category
Airplane
Serial number
52
Engine
Lycoming O-290D, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Bob G. Clay
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2003
Departed
Wasilla, AK
Destination
Palmer, AK
Airport
Grasshopper Valley

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
56
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Front

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F
Altimeter
30.13 inHg

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 N37209 · 1

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