ANC93LA068

NTSB accident investigation · Cessna 402B · Kivalina, AK · May 25, 1993

Accident · No injuriesLimited investigationFinal report
Date
May 25, 1993, 10:50 local (18:50 UTC)
Place
Kivalina, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N401NACessna 402B
Weather
Visual (VMC) · Day
Status
Completed · report August 18, 1994
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19930525018989A
Case key
2342

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 check the condition of the runway before takeoff. The soft runway condition was a factor in the accident.

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.

Nose gear collapsedTakeoff - roll/run
Airport facilities,runway/landing area condition - softFactor
Preflight planning/preparation - inadequatePilot in commandCause
Landing gear,nose gear - overload

Analysis

The pilot stated that aprox 20 yards into the takeoff roll the nose wheel sank into a soft spot in the center of the gravel strip and collapsed. The pilot also stated that the soft spot was hard to see, and that the runway appeared to have been recently graded. The Alaska airport facility directory cautions pilots that the condition of the runway is not monitored.

Factual narrative

On May 25, 1993, at approximately 1050 Alaska daylight time, a wheel equipped Cessna 402B, N401NA, received substantial damage when its nose gear collapsed during the initial takeoff roll on runway 30 at Kivalina, Alaska. The airline transport certificated pilot in command and the one revenue passenger, the sole occupants on board, were not injured. The airplane was being operated as a 14 CFR Part 135 scheduled commuter flight by Alaska Island Air, Inc. when the accident occurred. The flight originated in Kotzebue at 1005. Visual meteorological conditions prevailed at the time of the flight's attempted departure from Kivalina and a VFR flight plan was filed.

The pilot in command stated that approximately 20 yards into the takeoff roll, the nose wheel sank into a soft spot in the center of the gravel strip and collapsed. The pilot said the soft spot was hard to see and that the runway appeared to have been recently graded. The Airport Facility Directory for the State of Alaska cautions pilots that the condition of the runway is not monitored.

The pilot reported that following the accident he was neither asked nor did he participate in a toxicological examination.

Aircraft

Registration
N401NA
Reported as
Cessna 402B
Category
Airplane
Engine
Continental TSIO-520, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Alaska Island Air
Registered owner
Alaska Island Air
Airworthiness certificate
Standard, Normal
Last inspection
Unknown · January 2, 2000
Departed
OTZ · Kotzebue, AK
Flight plan
VFR
Airport
KVL · Kivalina, runway 30, 3,000 × 100 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
26
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
3,500 total · 400 in this make and model · 3,400 as pilot in command · 220 in the last 90 days · 70 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 5 knots
Visibility
6 statute miles
Lowest ceiling
800 ft overcast
Temperature
50 °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 N401NA · 1

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