ANC92LA041

NTSB accident investigation · De Havilland DH6 · Anchorage, AK · February 24, 1992

Accident · Minor injuriesLimited investigationFinal report
Date
February 24, 1992, 06:38 local (10:38 UTC)
Place
Anchorage, AK
Injuries
1 minor, 11 uninjured; on the ground: 1 minor
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N723CADe Havilland DH6
Weather
Visual (VMC) · Night/dark
Status
Completed · report May 26, 1993
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19920224003779A
Case key
5694

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

Inadequate visual look out by both pilots in the airplane, and the driver of the ground vehicle. Contributing factors to the accident were the absence of side conspicuity lighting on the ground vehicle, and the night lighting conditions.

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.

On ground/water collision with objectTaxi - from landing
Object - vehicleFactor
Visual lookout - inadequatePilot in commandCause
Light condition - nightFactor
Visual lookout - inadequateCopilot/second pilotCause
Terrain condition - snowbank
Visual lookout - inadequateDriver of vehicleCause

Analysis

During the post landing taxi, the airplane and an airport ramp tug collided with one another. Both pilots in the airplane and the tug driver said they did not see each other until the collision occurred.

Aircraft

Registration
N723CA
Reported as
De Havilland DH6
Category
Airplane
Serial number
723
Airframe hours
12,917
Engine
P&W PT6A-27, 620 horsepower, turbo prop
Damage
Substantial damage
Flight
Part 135
Operator
Markair Express, Inc., doing business as Markair Express
Registered owner
Markair Express, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · February 14, 1992 · 71 hours before
Departed
ENA · Kenai, AK
Flight plan
IFR
Airport
ANC · Anchorage International

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
31
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine sea, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
4,400 total · 63 in this make and model

Weather

Conditions
Visual (VMC) · Night/dark
Wind
290° at 11 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
25 °F, dew point 21 °F
Altimeter
29.00 inHg
Observed at
ANC, 1 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.