ANC11CA044

NTSB accident investigation · Douglas DC-6B · Cold Bay, AK · June 12, 2011

Accident · No injuriesData collectionFinal report
Date
June 12, 2011, 14:55 local (22:55 UTC)
Place
Cold Bay, AK
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N600UADouglas DC-6B
Defining event
Landing-flare/touchdown: Landing gear not configured
Weather
Visual (VMC) · Day
Status
Completed · report October 4, 2011
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration (Operations)
FAA report
20110612012009A
Case key
80758

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 flight crew's failure to extend the landing gear, which resulted in an inadvertent wheels up landing. Contributing to the accident was the flight crew's diverted attention.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Landing gear systemAircraft › Aircraft systems · Not used/operatedDouglas DC-6B: 1 caseAll aircraft: 113 casesProbable cause
Action: forgotten action/omissionPersonnel issues › Action/decision · Flight crewDouglas DC-6B: 1 caseAll aircraft: 440 casesProbable cause
Attention/monitoring: task monitoring/vigilancePersonnel issues › Psychological · Flight crewDouglas DC-6B: 1 caseAll aircraft: 330 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the captain, while on approach to land, he distracted the crew by pointing out a boat dock. He said that after touchdown, he realized that the landing gear was not extended, and the airplane slid on its belly, sustaining substantial damage to the underside of the fuselage. He said that the crew did not hear the landing gear retracted warning horn, and the accident could have been prevented if he had not distracted the crew. The captain reported that there were no mechanical malfunctions with the airplane that would have precluded normal operation.

Factual narrative

According to the captain, while on approach to land, he distracted the crew by pointing out a boat dock. He said that after touchdown, he realized that the landing gear was not extended, and the airplane slid on its belly, sustaining substantial damage to the underside of the fuselage. In the captain's written statement to the NTSB, he reported that there were no preaccident mechanical problems with the airplane, but indicated that the flight crew did not hear the landing gear retracted warning horn. The captain also stated that the accident could have been prevented if he had not distracted the crew.

Aircraft

Registration
N600UA
Reported as
Douglas DC-6B
Category
Airplane
Serial number
44894
Airframe hours
37,334
Engines
P & W R-2800 SERIES, 2,000 horsepower, reciprocatingP & W R-2800 SERIES, 2,000 horsepower, reciprocatingP & W R-2800 SERIES, 2,000 horsepower, reciprocatingP & W R-2800 SERIES, 2,400 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 125
Operator
Universal Airlines Inc
Registered owner
Race Coast Avaition, LLC.
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · November 3, 2010 · 98 hours before
Departed
PATG · Togiak Village, AK
Destination
PACD · Cold Bay, AK
Flight plan
Company VFR
Airport
PACD · Cold Bay, runway 26, 6,235 × 150 ft, concrete

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
56
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
December 2, 2010
Seat
Left
Flight hours
10,000 total · 4,000 in this make and model · 9,500 as pilot in command · 77 in the last 90 days · 38 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 20 knots, gusting 29
Visibility
10 statute miles
Lowest ceiling
900 ft broken
Temperature
43 °F, dew point 41 °F
Altimeter
29.76 inHg
Observed at
PACD

Docket · 1

The files NTSB released with the investigation on August 5, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 452 KB in all.

FAA reports on this event · 1

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