ANC97LA048

NTSB accident investigation · Piper PA-31-T3 · Stebbins, AK · April 7, 1997

Accident · No injuriesLimited investigationFinal report
Date
April 7, 1997, 15:06 local (23:06 UTC)
Place
Stebbins, AK
Injuries
7 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N218CSPiper PA-31-T3
Weather
Instrument (IMC) · Day
Status
Completed · report May 4, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19970407005199A
Case key
2982

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 decision to continue VFR into IMC. Factors associated with the accident are fog/obscuration, and the pilot's failure to initiate a go-around earlier in the approach.

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.

In flight collision with terrain/waterLanding
Weather condition - fogFactor
Weather condition - obscurationFactor
Vfr flight into imc - continuedPilot in commandCause
Go-around - delayedPilot in commandFactor

Analysis

The pilot was landing at a remote village site. Reported weather was approximately 3/8 of a mile at the time of the accident. The pilot estimated the in-flight visibility as 1.5 miles, and said although much of the runway was shrouded in fog and mist, he could see the approach end of runway 05. While on a base leg to runway 05, he said he was in too close to the runway, and elected to do a tight 'S' turn to gain additional spacing. As he turned to final, he reduced engine power to idle. He subsequently realized he was too low and too slow, heard the stall warning horn, and quickly added full power. The airplane rolled to the right, and struck the runway with the right wing.

Factual narrative

On April 7, 1997, about 1506 Alaska daylight time, a wheel equipped Piper PA-31 airplane, N218CS, owned and operated by Cape Smythe Air Service, received substantial damage while landing at the Stebbins Airport, Stebbins, Alaska. None of the six passengers aboard, or the airline transport certificated pilot, reported any injuries. The 14 CFR Part 135 scheduled commuter flight, Flight 365, departed Nome, Alaska, about 1419, en route to Stebbins. A visual flight rules flight plan was in effect. The reported weather at Stebbins was characterized as instrument meteorological conditions at the time of the accident.

According to witness reports, fog obscured the gravel and snow covered airstrip. The airplane was observed at a low altitude, close to the threshold of runway 05. It banked hard to the left, and right, and then collided with terrain near the runway threshold. The airplane continued down the runway a short distance, then veered off the left side of the runway and struck a snow berm.

At the time of the accident, a weather observer at Stebbins estimated the visibility to be 3/8 of a mile.

During a telephone conversation with the NTSB investigator-in-charge on April 17, the pilot related as he approached Stebbins, he was given a weather observation from a weather observer at Stebbins that indicated the prevailing visibility was about 1/4 mile in fog and mist. He said that was later amended to 3/8 of a mile. About seven miles from Stebbins, he said he was able to see a portion of the runway, the approach end of runway 05. The reminder of the runway and village was shrouded in fog. As he continued his approach to Stebbins, and entered a left base for runway 05, he said he realized he was in too close to the runway, performed a tight "S" turn to gain a little distance from the runway, reduced power on the turbine engines to idle, and turned final approach. During final approach, he said he was too low and too slow. He heard the stall warning horn, and quickly added full power to go-around. The airplane rolled hard to the right at the application of power, and the right wing hit the ground.

In his written report to the NTSB, under the section titled: "Recommendation (how could this accident been prevented)", the pilot wrote: "Should have made a decision sooner, to go-around and get lined up with the runway." The pilot also estimated the visibility in the vicinity of the airport as 1.5 miles.

Aircraft

Registration
N218CS
Reported as
Piper PA-31-T3
Category
Airplane
Serial number
31T-8275016
Airframe hours
9,160
Engine
P&W PT6A-11, 500 horsepower, turbo prop
Damage
Substantial damage
Flight
Part 135
Registered owner
Cape Smythe Air Service
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · March 12, 1997 · 95 hours before
Departed
OME · Nome, AK
Destination
WBB
Flight plan
VFR
Airport
WBB · Stebbins, runway 5, 3,000 × 60 ft, gravel

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
Certificates
Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
10,630 total · 2,495 in this make and model · 9,900 as pilot in command · 241 in the last 90 days · 98 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
80° at 5 knots, gusting 10
Visibility
0.5 statute miles
Temperature
36 °F

FAA reports on this event · 1

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