ANC92LA128

NTSB accident investigation · De Havilland DHC-2 · Crescent Lake, AK · August 12, 1992

Accident · Minor injuriesLimited investigationFinal report
Date
August 12, 1992, 11:45 local (19:45 UTC)
Place
Crescent Lake, AK
Injuries
1 minor, 4 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8190YDe Havilland DHC-2
Weather
Visual (VMC) · Day
Status
Completed · report May 26, 1993
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19920812031179A
Case key
5775

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

On this page

Probable cause

The pilot's misjudging his altitude on final approach. Contributing to the accident was the glassy water condition.

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.

Hard landingLanding - flare/touchdown
Terrain condition - water,glassyFactor
Altitude - misjudgedPilot in commandCause
Complete gear collapsedLanding - flare/touchdown
Miscellaneous/otherOther

Analysis

Approximately 5 seconds after leveling the wings on final approach for a glassy water landing on a large lake, the airplane experienced a hard premature landing. The floats were separated, and the airplane sank immediately. The pilot said that because of the flat lighting and glassy water conditions he lost his depth perception and misjudged his altitude. He said when the airplane hit the water he thought he was still 70 to 80 feet above the water.

Aircraft

Registration
N8190Y
Reported as
De Havilland DHC-2
Category
Airplane
Serial number
824
Airframe hours
9,835
Engine
P&W R-985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Alaska West Air Service, Inc.
Registered owner
Alaska West Air Service, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 27, 1992 · 50 hours before
Departed
ENA · Kenai, 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
36
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
2,100 total · 300 in this make and model · 2,000 as pilot in command · 250 in the last 90 days · 100 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
5 statute miles
Lowest ceiling
2,500 ft overcast
Temperature
54 °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 N8190Y · 1

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