ANC90LA090

NTSB accident investigation · Cessna 206U · Taku, AK · June 17, 1990

Accident · No injuriesLimited investigationFinal report
Date
June 17, 1990, 10:30 local (18:30 UTC)
Place
Taku, AK
Injuries
10 uninjured
Phase of flight
Enroute
Aircraft
N9735ZCessna 206UN756EJCessna 206G
Weather
Visual (VMC) · Day
Status
Completed · report August 28, 1992
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Case key
5381

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

Failure of the pilot of N9735Z (C-206U) to see and avoid N756EJ (C-206G), and failure of company management to establish adequate separation procedures.

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.

Midair collisionCruise - normal
Visual lookout - inadequatePilot in commandCause
Visual separation - inadequateCompany/operator managementCause
Midair collisionCruise - normal
Visual lookout - inadequatePilot of other aircraftCause
Visual separation - inadequateCompany/operator managementCause

Analysis

The two aircraft from the same operator were conducting glacier sightseeing operations when the midair collision occurred. Both aircraft had been in frequent radio and visual contact with each other. After N9735Z (C-206U) exited sockeye valley, both aircraft proceeded to west twin glacier at same altitude and heading. N9735Z (C-206U) struck N756EJ (C-206G) from behind. Both aircraft landed safely.

Aircraft · 2

Registration
N9735Z
Reported as
Cessna 206U
Category
Airplane
Serial number
U20606632
Airframe hours
3,645
Engine
Continental IO-520-F13, 300 horsepower, reciprocating
Damage
Minor damage
Flight
Part 135
Registered owner
Taku Glacier Air, Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 14, 1990 · 10 hours before
Departed
JNU · Juneau, AK
Flight plan
Company 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.

Registration
N756EJ
Reported as
Cessna 206G
Category
Airplane
Serial number
U20604029
Airframe hours
4,175
Engine
Continental IO-520-F9, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Taku Glacier Air, Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 12, 1990 · 18 hours before
Departed
JNU · Juneau, AK
Flight plan
Company 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N9735Z
Age
41
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
6,000 total · 140 in this make and model · 5,000 as pilot in command · 220 in the last 90 days · 100 in the last 30 days · 5 in the last 24 hours
Role
Pilot, aircraft N756EJ
Age
46
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
8,500 total · 500 in this make and model · 7,700 as pilot in command · 150 in the last 90 days · 100 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 15 knots
Visibility
30 statute miles
Lowest ceiling
4,000 ft overcast
Temperature
50 °F, dew point 37 °F
Altimeter
30.00 inHg

FAA reports on this event · 2

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