Statuts: | Accident investigation report completed and information captured |
Date: | lundi 5 avril 1976 |
Heure: | 08:19 |
Type/Sous-type: | Boeing 727-81 |
Compagnie: | Alaska Airlines |
Immatriculation: | N124AS |
Numéro de série: | 18821/124 |
Année de Fabrication: | 1965-03-04 (11 years 1 months) |
Heures de vol: | 25360 |
Moteurs: | 3 Pratt & Whitney JT8D-7A |
Equipage: | victimes: 0 / à bord: 7 |
Passagers: | victimes: 1 / à bord: 43 |
Total: | victimes: 1 / à bord: 50 |
Dégats de l'appareil: | Détruit |
Conséquences: | Written off (damaged beyond repair) |
Lieu de l'accident: | Ketchikan International Airport, AK (KTN) ( Etats-Unis d'Amérique)
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Élévation des lieux de l'accident: | 27 m (89 feet) amsl |
Phase de vol: | A l'atterrissage (LDG) |
Nature: | Transport de Passagers Nat. |
Aéroport de départ: | Juneau International Airport, AK (JNU/PAJN), Etats-Unis d'Amérique |
Aéroport de destination: | Ketchikan International Airport, AK (KTN/PAKT), Etats-Unis d'Amérique |
Numéro de vol: | 60 |
Détails: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:
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Investigating agency: | NTSB |
Status: | Investigation completed |
Duration: | 261 days (9 months) | Accident number: | NTSB/AAR-76-20 | Download report: | Final report
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Opérations de secours
NTSB issued 3 Safety Recommendations
Issued: 28-DEC-1976 | To: | A-76-141 |
INSPECT MORE FREQUENTLY THE CRASH/FIRE/RESCUE CAPABILITIES OF CERTIFICATED AIRPORTS, ESPECIALLY THOSE IN ALASKA, TO ASSURE ADEQUATE TRAINING OF PERSONNEL, MAINTENANCE AND OPERATIONAL READINESS OF CFR EQUIPMENT, CURRENCY OF EMERGENCY PROCEDURES, AND AVAILABILITY OF QUALIFIED PERSONNEL TO CONDUCT AND TO DIRECT CFR ACTIVITY. (Closed - Unacceptable Action) |
Issued: 28-DEC-1976 | To: | A-76-142 |
INITIATE A PROGRAM FOR THOSE AIRPORTS WHICH HAVE NO FULL-TIME CFR CREW, ESPECIALLY THOSE IN ALASKA, TO PROPERLY TRAIN AND EQUIP THE PERSONNEL THAT MUST RESPOND TO AN AIRCRAFT FIRE. (Closed - Acceptable Alternate Action) |
Issued: 28-DEC-1976 | To: | A-76-143 |
AMEND 14 CFR 139 TO REQUIRE THAT AIRPORT PERSONNEL WHO ARE NOT PROFESSIONAL FIREFIGHTERS BUT WHO, BECAUSE OF THEIR SUPERVISORY STATUS, MUST DIRECT CFR OPERATIONS AT AIRPORTS, BE QUALIFIED TO PERFORM THIS TASK. (Closed - Acceptable Action) |
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Photos
Aircraft history
04 MAR 1965 |
JA8301 |
All Nippon Airways |
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31 MAY 1972 |
N124 |
Pacific Southwest Airlines |
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22 JUN 1972 |
N124 |
Alaska Airlines |
leased
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30 NOV 1972 |
XA-SEB |
Mexicana |
sub leased
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10 JAN 1974 |
N124 |
Alaska Airlines |
returned
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14 DEC 1975 |
N124AS |
Alaska Airlines |
new registration
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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Juneau International Airport, AK et Ketchikan International Airport, AK est de 373 km (233 miles).
Accident location: Exact; deduced from official accident report.
Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.