ANC84IA101

NTSB incident investigation · Cessna 207A · Larsen Bay, AK · June 25, 1984

Incident · No injuriesIncident investigationFinal report
Date
June 25, 1984, 11:10 local (19:10 UTC)
Place
Larsen Bay, AK
Injuries
4 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N75941Cessna 207A
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19840625053519I
Case key
4245

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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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.

Loss of engine power(total) - mech failure/malfCruise - normal
Engine assembly,connecting rod - failure,totalCause
Forced landingDescent - emergency
Nose gear collapsedLanding - roll
Terrain condition - high vegetationFactor

Analysis

About 12 mins after takeoff while at 2300 ft MSL, the eng began to shake, oil covered the windshield & oil pressure was lost. Subsequently, the plt made a forced landing in an area of tall grass on a river delta. During the landing, the nose gear collapsed & the prop was damaged. An exam revealed the #2 connecting rod, p/n 633403, had failed & punctured a hole in the eng crankcase.

Aircraft

Registration
N75941
Reported as
Cessna 207A
Category
Airplane
Serial number
20700656
Airframe hours
1,272
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Minor damage
Flight
Part 135
Registered owner
Uyak Air Service
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 19, 1984 · 60 hours before
Departed
Larsen Bay, AK

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
30
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,494 total · 103 in this make and model · 1,304 as pilot in command · 211 in the last 90 days · 100 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 10 knots
Visibility
15 statute miles
Lowest ceiling
3,300 ft overcast
Temperature
50 °F, dew point 9 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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