ASN Aircraft accident Boeing 727-81 N124AS Ketchikan International Airport, AK (KTN)
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Status:Accident investigation report completed and information captured
Date:Monday 5 April 1976
Type:Silhouette image of generic B721 model; specific model in this crash may look slightly different
Boeing 727-81
Operator:Alaska Airlines
Registration: N124AS
MSN: 18821/124
First flight: 1965-03-04 (11 years 1 months)
Total airframe hrs:25360
Engines: 3 Pratt & Whitney JT8D-7A
Crew:Fatalities: 0 / Occupants: 7
Passengers:Fatalities: 1 / Occupants: 43
Total:Fatalities: 1 / Occupants: 50
Aircraft damage: Destroyed
Aircraft fate: Written off (damaged beyond repair)
Location:Ketchikan International Airport, AK (KTN) (   United States of America)
Crash site elevation: 27 m (89 feet) amsl
Phase: Landing (LDG)
Nature:Domestic Scheduled Passenger
Departure airport:Juneau International Airport, AK (JNU/PAJN), United States of America
Destination airport:Ketchikan International Airport, AK (KTN/PAKT), United States of America
Flightnumber: 60
Flight 60 was making a runway 11 ILS approach under conditions of low ceilings and low visibility. Descending through 4000 feet visual contact with the ground and water was acquired. The captain decided to proceed visually. The aircraft touched down fast (at 145kts) with a 3 knots tailwind component.
Braking action was poor, so the captain decided to execute a go-around. Ground spoilers were retracted, flaps set at 25deg. The thrust reversers didn't disengage fully, so full takeoff thrust couldn't be obtained. Attempts to disengage the reversers failed, so ground spoilers were deployed again. The aircraft overran the wet runway, crossed a gully and a service road, struck the antenna array support structure and continued before ending up in a ravine, 700 feet past the runway.

Probable Cause:

PROBABLE CAUSE: "The captain's faulty judgement in initiating a go-around after he was committed to a full stop landing following an excessively long and fast touchdown from an unstabilized approach. Contributing to the accident was the pilot's unprofessional decision to abandon the precision approach."

Accident investigation:

Investigating agency: NTSB
Status: Investigation completed
Duration: 261 days (9 months)
Accident number: NTSB/AAR-76-20
Download report: Final report

Landing after unstabilized approach
High speed landing
Runway excursion

Follow-up / safety actions

NTSB issued 3 Safety Recommendations

Show all...


photo of Boeing-727-81-N124AS

Aircraft history
date registration operator remarks
04 MAR 1965 JA8301 All Nippon Airways
31 MAY 1972 N124 Pacific Southwest Airlines
22 JUN 1972 N124 Alaska Airlines leased
30 NOV 1972 XA-SEB Mexicana sub leased
10 JAN 1974 N124 Alaska Airlines returned
14 DEC 1975 N124AS Alaska Airlines new registration

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Juneau International Airport, AK to Ketchikan International Airport, AK as the crow flies is 373 km (233 miles).
Accident location: Exact; deduced from official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Boeing 727

  • 1832 built
  • 25th loss
  • 21st fatal accident
  • 21st worst accident (at the time)
  • 59th worst accident (currently)
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