Détails:
An Airbus A330-303, operated by THY Turkish Airlines, suffered a runway excursion accident upon landing at Kathmandu-Tribhuvan Airport (KTM), Nepal.
Flight TK726 was a regular passenger service from Istanbul-Atatürk International Airport (IST) to Kathmandu, Nepal. The flight was the first international flight to scheduled to arrive that morning. After descending from cruising altitude, it entered a holding pattern at FL210 at 06:12 hours local time (00:27 UTC) until about 07:00 (01:15 UTC) when it was cleared for a VOR/DME approach to runway 02. This approach was abandoned at about the Missed Approach Point at 1DME and the aircraft performed a go around. The aircraft circled and positioned for a second approach to runway 02. The aircraft touched down to the left of the runway centerline with the left hand main gear off the paved runway surface. It ran onto soft soil and the nose landing gear collapsed.
The aircraft touched down at to the left of the centerline because the FMGS NAV database contained threshold coordinates for a proposed displacement of the runway 02 threshold. This was later withdrawn through a NOTAM, but had not been updated by the airline in the FMGS. Additionally, the coordinates that were initially published were inaccurate, causing the threshold coordinates to be offset to the left of the actual threshold. This had been noticed and reported by a previous Turkish Airlines flight on March 2. The changes to the FMGS had not been performed by the time TC-JOC landed at Kathmandu.
PROBABLE CAUSE: "The decision of the flight crew to continue approach and landing below the minima with inadequate visual reference and not to perform a missed approach in accordance to the published approach procedure. Contributing factors were the probable fixation of the flight crew to land at Kathmandu, and the deterioration of weather conditions that resulted in fog over the airport reducing the visibility below the required minima."
» Ministry of Culture, Tourism and Civil Aviation
» Photos and videos of the accident
» SKYbrary
VNKT 040250Z 00000KT 3000 BR FEW015 09/09 Q1016 NOSIG
23:50 UTC / 05:35 local time:
VNKT 032350Z 00000KT 0500 FG VV/// 08/07 Q1013 NOSIG
| Statuts: | Accident investigation report completed and information captured |
| Date: | mercredi 4 mars 2015 |
| Heure: | 07:44 |
| Type/Sous-type: |  Airbus A330-303 |
| Compagnie: | THY Turkish Airlines |
| Immatriculation: | TC-JOC |
| Numéro de série: | 1522 |
| Année de Fabrication: | 2014-04-29 (10 months) |
| Heures de vol: | 4139 |
| Cycles: | 732 |
| Moteurs: | 2 General Electric CF6-80E1A3 |
| Equipage: | victimes: 0 / à bord: 11 |
| Passagers: | victimes: 0 / à bord: 224 |
| Total: | victimes: 0 / à bord: 235 |
| Dégats de l'appareil: | Substantiels |
| Conséquences: | Written off (damaged beyond repair) |
| Lieu de l'accident: | Kathmandu-Tribhuvan Airport (KTM) ( Népal)
|
| Phase de vol: | A l'atterrissage (LDG) |
| Nature: | Transport de Passagers Intern. |
| Aéroport de départ: | Istanbul-Atatürk International Airport (IST/LTBA), Turquie |
| Kathmandu-Tribhuvan Airport (KTM/VNKT), Népal | |
| Numéro de vol: | TK726 |
An Airbus A330-303, operated by THY Turkish Airlines, suffered a runway excursion accident upon landing at Kathmandu-Tribhuvan Airport (KTM), Nepal.
Flight TK726 was a regular passenger service from Istanbul-Atatürk International Airport (IST) to Kathmandu, Nepal. The flight was the first international flight to scheduled to arrive that morning. After descending from cruising altitude, it entered a holding pattern at FL210 at 06:12 hours local time (00:27 UTC) until about 07:00 (01:15 UTC) when it was cleared for a VOR/DME approach to runway 02. This approach was abandoned at about the Missed Approach Point at 1DME and the aircraft performed a go around. The aircraft circled and positioned for a second approach to runway 02. The aircraft touched down to the left of the runway centerline with the left hand main gear off the paved runway surface. It ran onto soft soil and the nose landing gear collapsed.
The aircraft touched down at to the left of the centerline because the FMGS NAV database contained threshold coordinates for a proposed displacement of the runway 02 threshold. This was later withdrawn through a NOTAM, but had not been updated by the airline in the FMGS. Additionally, the coordinates that were initially published were inaccurate, causing the threshold coordinates to be offset to the left of the actual threshold. This had been noticed and reported by a previous Turkish Airlines flight on March 2. The changes to the FMGS had not been performed by the time TC-JOC landed at Kathmandu.
Probable Cause:
PROBABLE CAUSE: "The decision of the flight crew to continue approach and landing below the minima with inadequate visual reference and not to perform a missed approach in accordance to the published approach procedure. Contributing factors were the probable fixation of the flight crew to land at Kathmandu, and the deterioration of weather conditions that resulted in fog over the airport reducing the visibility below the required minima."
Accident investigation:
 |
|
Sources:
» Hemant Arjyal» Ministry of Culture, Tourism and Civil Aviation
» Photos and videos of the accident
» SKYbrary
METAR Weather report:
02:50 UTC / 08:35 local time:VNKT 040250Z 00000KT 3000 BR FEW015 09/09 Q1016 NOSIG
23:50 UTC / 05:35 local time:
VNKT 032350Z 00000KT 0500 FG VV/// 08/07 Q1013 NOSIG
Opérations de secours
Nepal AAIC issued 21 Safety Recommendations
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Photos
Video, social media
Plane crash at TIA. Passengers safe #turkishairlines pic.twitter.com/xpjPhu80fI
— aastha pandey (@aasthapandey) March 4, 2015Plan
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 Istanbul-Atatürk International Airport et Kathmandu-Tribhuvan Airport est de 5264 km (3290 miles).
Accident location: Approximate; accuracy within a few kilometers.
La distance entre Istanbul-Atatürk International Airport et Kathmandu-Tribhuvan Airport est de 5264 km (3290 miles).
Accident location: Approximate; accuracy within a few kilometers.
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.
languages: 
Népal
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