ASN Wikibase Occurrence # 220330
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| Date: | Sunday 23 December 2018 |
| Time: | 05:05 LT |
| Type: |  Boeing 747-428 (BCF) |
| Owner/operator: | National Airlines |
| Registration: | N919CA |
| MSN: | 25302/884 |
| Year of manufacture: | 1991 |
| Fatalities: | Fatalities: 0 / Occupants: |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | c. 115 km ENE of Delhi -
 India
|
| Phase: | En route |
| Nature: | Cargo |
| Departure airport: | Bagram Air Base (OAI/OAIX) |
| Hong Kong-Chek Lap Kok International Airport (HKG/VHHH) | |
| Investigating agency: | AAIB India |
| Confidence Rating: |  Accident investigation report completed and information captured |
AAIB India reported that it is investigating an airprox incident in the Delhi Flight Information Region (FIR). Directly or indirectly involved in the incident were:
- National Airlines flight N8/NCR840 Boeing 747-428BCF N919CA from Bagram, Afganistan to Hong Kong
- KLM flight KL/KLM875 Boeing 777-306ER PH-BVB from Amsterdam, Netherlands, to Bangkok, Thailand
- Eva Air flight BR/EVA061 Boeing 777-35EER B-16716 from Bangkok, Thailand to Vienna, Austria
Flight NCR840 was tracking southeast-bound on airway M890 at Flight Level (FL) 310. KLM875 was flying above and slightly behind it in the same direction at FL330.
At the same time, EVA061 was flying on the same airway in opposite direction at FL320.
NCR840 contacted ATC, requesting permission to climb. Air Traffic Control responded to "standby, expect 350". NCR840, however, began to climb, creating a potential conflict with KLM875 above and EVA061 ahead. ATC then instructed NCR840 to turn left to maintain separation. The flight crew of NCR840 responded by turning left and descending to FL320, which was EVA061's flight level. This reportedly triggered a TCAS warning, causing EVA061 to turn left to maintain separation.
KLM875 continued the flight without having to take to take action.
Probable cause:
Incorrect use of plain language while passing information to aircraft, which led to 'confirmation bias' and incorrect understanding of the ATC advisory.
Lack of situational awareness amongst NCR840 crew was a contributing factor.
Accident investigation:
 |
|
Sources:
https://www.indiatoday.in/india/story/multiple-warnings-atc-help-avert-mid-air-collision-of-three-planes-1419134-2018-12-28
http://timesofindia.indiatimes.com/articleshow/67278599.cms
https://flightaware.com/live/flight/KLM875/history/20181222/1625Z/EHAM/VTBS
https://flightaware.com/live/flight/NCR840/history/20181222/2216Z
https://flightaware.com/live/flight/EVA61/history/20181222/1955Z/VTBS/LOWW
Images:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Dec-2018 10:13 | harro | Added |
| 30-Dec-2018 11:23 | harro | Updated [Narrative, Photo] |
Corrections or additions? ... Edit this accident description
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