SEA88FA156

NTSB accident investigation · de Havilland DHC-2 Mark 1 · Sitka, AK · August 18, 1988

Accident · FatalField investigationFinal report
Date
August 18, 1988, 06:20 local (14:20 UTC)
Place
Sitka, AK
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N64398de Havilland DHC-2 Mark 1
Weather
Day
Status
Completed · report June 9, 1989
Report
Approved by Office Director
FAA report
19880818062549A
Case key
40731

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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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 control - in flightManeuvering - turn to reverse direction
Weather evaluation - inadequatePilot in commandCause
In-flight planning/decision - delayedPilot in commandCause
Weather condition - cloudsFactor
Stall - inadvertentPilot in commandCause
Terrain condition - mountainous/hillyFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

While on a flight from Sitka to rowan bay, Alaska, the pilot flew up a valley intending to cross a pass whose elevation was 2745 feet MSL. Upon approaching the pass the pilot encountered clouds which prevented his transit. The pilot then executed a 180 degree right course reversal and at some point near the completion of the maneuver and in close proximity to the steep terrain along the western edge of the pass the pilot allowed the aircraft to enter a stall condition. The aircraft impacted the 40 degree sloped terrain in a steep nose down, near wings level attitude and with a steep flight path.

Aircraft

Registration
N64398
Reported as
de Havilland DHC-2 Mark 1 (DHC-2 MARK)
Category
Airplane
Serial number
251
Airframe hours
13,985
Engine
P&W R-985-AN14B, 400 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Registered owner
Bellair, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 13, 1988 · 36 hours before
Departed
AK29 · Sitka, AK
Destination
RWB · Rowan Bay, AK
Flight plan
VFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
31
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
3,300 total · 700 in this make and model · 3,000 as pilot in command · 300 in the last 90 days · 108 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Day
Wind
90° at 12 knots
Visibility
12 statute miles
Lowest ceiling
3,500 ft overcast
Temperature
57 °F, dew point 45 °F
Altimeter
29.00 inHg
Observed at
SIT, 15 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.