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Last updated: 23 May 2019
Statuts:Enquête Officielle
Date:vendredi 21 novembre 1980
Heure:09:52
Type/Sous-type:Silhouette image of generic B721 model; specific model in this crash may look slightly different
Boeing 727-92C
Opérant pour:Air Micronesia
Loué à :Continental Air Lines
Immatriculation: N18479
Numéro de série: 19174/326
Année de Fabrication: 1966-10-11 (14 years 2 months)
Heures de vol:30878
Cycles:20788
Moteurs: 3 Pratt & Whitney JT8D-9A
Equipage:victimes: 0 / à bord: 6
Passagers:victimes: 0 / à bord: 67
Total:victimes: 0 / à bord: 73
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Yap Airport, Western Caroline Islands (YAP) (   Micronésie)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Intern.
Aéroport de départ:Guam International Airport (GUM/PGUM), Guam
Aéroport de destination:Yap Airport (YAP/PTYA), Micronésie
Numéro de vol: 614
Détails:
Air Micronesia Flight 614 departed Saipan at 07:30 for a flight to Palau with intermediate stops in Guam and Yap, Western Caroline Islands. The aircraft departed Guam at 08:30 and climbed to FL350. An en route descent to Yap was made from the north through broken to scattered clouds and the captain, who was flying the aircraft, turned onto a downwind leg at the northeast portion of the airport. The downwind leg was flown at an altitude of 600 feet above the runway 07 elevation while the crew checked to see if the runway was clear, to see if the fire truck was in place, and to see the direction of the windsock. The flaps were set at 30deg on the base leg. Abeam the approach end of runway 07, the captain began a right 90deg and a left turn manoeuvre to align the aircraft with the final approach to runway 07. During a portion of the downwind leg, the captain relinquished control of the aircraft to the first officer while the captain took pictures of the airport. He then resumed control and passed the camera to the second officer and asked him to take pictures of the runway. As the aircraft passed through 90deg from the runway heading, it had descended to about 300 feet above the runway elevation of 52 feet msl. When the aircraft was aligned with the runway heading, it was about 480 feet above runway elevation at a point 1.5 miles from the approach end of the runway.
At 09:52 the aircraft touched down 13 feet short of runway 07. The right main landing gear immediately separated from the aircraft. The aircraft gradually veered off the runway and came to rest in the jungle about 1,700 feet beyond the initial touchdown. A severe ground fire erupted immediately along the right side of the aircraft as it came to rest. All occupants had evacuated within about 1 minute after the aircraft came to rest.

Probable Cause:

PROBABLE CAUSE: "The Captain's premature reduction of thrust in combination with flying a shallow approach slope angle to an improper touchdown aim point. These actions resulted in a high rate of descent and a touchdown on upward sloping terrain short of the runway threshold, which generated loads that exceeded the design strength and failed the right-hand landing gear. Contributing to the accident were the Captain's lack of recent experience in the B-727 aircraft and a transfer of his DC-10 aircraft landing habits and techniques to the operation of the B-727 aircraft."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 187 days (6 months)
Accident number: NTSB/AAR-81-07
Download report: Final report

Sources:
» NTSB Safety Recommendations A-81-61/62
» NTSB-AAR-81-7


Opérations de secours

NTSB issued 2 Safety Recommendations

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Photos

photo of Boeing-727-92C-N18479
accident date: 21-11-1980
type: Boeing 727-92C
registration: N18479
 

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 Guam International Airport et Yap Airport est de 850 km (531 miles).

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.
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