ANC00LA006

NTSB accident investigation · Piper PA-31-T3 · Gambell, AK · October 16, 1999

Accident · No injuriesLimited investigationFinal report
Date
October 15, 1999, 16:22 local (Oct 16, 1999, 00:22 UTC)
Place
Gambell, AK
Injuries
5 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N220CSPiper PA-31-T3
Weather
Visual (VMC) · Day
Status
Completed · report May 17, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19991015029069A
Case key
47683

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

An in-flight collision with a bird.

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 objectCruise
Object - bird(s)Cause
Wing,wing rib - fractured

Analysis

The airline transport certificated pilot was conducting a visual flight rules (VFR) scheduled domestic passenger flight. The airplane was in cruise flight at 2,500 feet msl, at an airspeed of about 200 knots. The pilot said he caught a glimpse of a sea gull that suddenly dove toward the water. The sea gull struck the right wing, outboard of the right engine nacelle. The pilot landed the airplane without any problems. The right wing's leading edge upper surface received downward and aft crushing of the wing structure about 18 inches across, and about 8 inches deep. The damage to the wing included several ribs, forward spar, leading edge skin, and the deice boot.

Factual narrative

On October 15, 1999, about 1622 Alaska daylight time, a Piper PA-31-T3 airplane, N220CS, sustained substantial damage when it collided with a bird about 18 miles east of Gambell, Alaska, about latitude 63 degrees, 41.5 minutes north, and longitude 171 degrees, 05.0 minutes west. The airplane was being operated as a visual flight rules (VFR) scheduled domestic passenger flight under Title 14, CFR Part 135, when the accident occurred. The airplane was operated as Flight 394 by Cape Smythe Air Service Inc., Nome, Alaska. The airline transport certificated pilot, and the four passengers, were not injured. Visual meteorological conditions prevailed. A VFR flight plan was filed. The flight originated at the Savoonga Airport, Savoonga, Alaska, about 1615.

A Federal Aviation Administration (FAA) airworthiness inspector, Fairbanks Flight Standards District Office (FSDO), reported he was notified by the operator of the bird strike. The flight was a continuation of a scheduled flight from Nome, to Gambell, located on Saint Lawrence Island, in the Bering Sea. The FAA inspector said that the pilot reported he was in cruise flight at 2,500 feet msl, at an airspeed of about 200 knots. He said he caught a glimpse of a sea gull that suddenly dove toward the water. The sea gull struck the right wing, outboard of the right engine nacelle. The pilot landed at Gambell without any problems.

The Director of Maintenance for the operator reported the upper surface of the leading edge received downward, and aft crushing of the wing structure about 18 inches across, and about 8 inches deep. The damage to the wing included several ribs, forward spar, leading edge skin, and the deice boot.

Aircraft

Registration
N220CS
Reported as
Piper PA-31-T3
Category
Airplane
Serial number
31T8275013
Airframe hours
9,006
Engine
P&W PT6A-11, 500 horsepower, turbo prop
Damage
Substantial damage
Flight
Part 135
Registered owner
Cape Smythe Air Service Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · October 2, 1999 · 52 hours before
Departed
PASA · Savoonga, AK
Destination
PAGM
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
60
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
23,000 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
17° at 16 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
30 °F, dew point 19 °F
Altimeter
30.00 inHg
Observed at
PAG, 18 nm away

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 N220CS · 1

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