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Last updated: 17 May 2021
Statuts:Enquête Officielle
Date:mercredi 16 février 2000
Heure:12:43
Type/Sous-type:Silhouette image of generic YS11 model; specific model in this crash may look slightly different
NAMC YS-11A-213
Compagnie:ANK- Air Nippon
Immatriculation: JA8727
Numéro de série: 2095
Année de Fabrication: 1969
Moteurs: 2 Rolls-Royce Dart 543-10J/K
Equipage:victimes: 0 / à bord: 4
Passagers:victimes: 0 / à bord: 37
Total:victimes: 0 / à bord: 41
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Sapporo-Okadama Airport (OKD) (   Japon)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Hakodate Airport (HKD/RJCH), Japon
Aéroport de destination:Sapporo-Okadama Airport (OKD/RJCO), Japon
Numéro de vol: 354
Détails:
The YS-11 overran runway 14, and ran into the snow bank located on the right side of the runway overrun area causing damage to the landing gear, propeller and front fuselage.

Probable Cause:

PROBABLE CAUSE: "When the a/c tried to land on the snow covered rwy, it passed over the rwy threshold with speed of 23 kts above target threshold speed (tts). The a/c touched down further away from the touch down zone with high speed. This resulted in overrun from the rwy, collision with the snow bank and substantial damage to the a/c."

CAUSAL FACTORS:
a) high air speed at the rwy threshold, 23 kts above tts.
b) extended landing roll distance due to the following factors:
1) higher touch down speed.
2) due to higher touch down speed, time elapsed before the propeller ground fine pitch effect became positive.
3) the rwy covered with snow was slippery and braking was not effective enough to stop the a/c within the rwy.
c) the flight crew failed to execute go-around even though they had chances to do so during such time frame as:
1) guidance limit to da.
2) passing over the rwy threshold with higher-than-tts air speed; and
3) making an elongated touch down.
d) it was estimated possible that then meteorological conditions affected the proper operations of the a/c.
e) insufficient flight crew coordination such as:
1) air speed monitor by the pnf.
2) standard call-out procedure by the pf and the pnf; and
3) close coordination between the captain and the cockpit.

Sources:
» ICAO Adrep Summary 2/00 (#74)
» ICAO File : 00000380


Photos

photo of NAMC-YS-11A-213-JA8727
accident date: 16-02-2000
type: NAMC YS-11A-213
registration: JA8727
photo of NAMC-YS-11A-213-JA8727
accident date: 16-02-2000
type: NAMC YS-11A-213
registration: JA8727
photo of NAMC-YS-11A-213-JA8727
accident date: 16-02-2000
type: NAMC YS-11A-213
registration: JA8727
 

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 Hakodate Airport et Sapporo-Okadama Airport est de 155 km (97 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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