Boeing 777-333ER incident near Calgary, Ca, December 31, 2015
On December 31, 2015 at about 1:30 am local time, a Boeing 777-333ER, registered CFRAM, was involved in an incident during enroute (cruise) near Calgary. The NTSB record does not give the injuries.
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this incident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- December 31, 2015 · about 1:30 am local time
- Place
- Calgary, Canada
- Type
- Incident
- Injuries
- The NTSB record does not give the injuries.
- Weather
- not recorded
- Aircraft
- Boeing 777-333ER 232 · all 777-333ERs on the register
- Registration
- CFRAM · no longer on the register · serial 35250
- Damage
- Not recorded
- Flight
- Flight
The NTSB's narrative preliminary · quoted from the NTSB record
The NTSB was notified of an incident involving a Boeing B777-333 aircraft, registration C-FRAM, that occurred enroute from Shanghai, China to Toronto, Canada, which resulted in the flight being diverted to Calgary, Canada. The incident is being investigated by the Transportation Safety Board (TSB) of Canada. The NTSB has appointed a U.S. Accredited Representative to assist the TSB investigation under the provisions of ICAO Annex 13 as the State of Manufacturer of the aircraft. The TSB can be contacted at: Transportation Safety Board of Canada 200 Promenade du Portage Place du Centre, 4th floor Gatineau QC K1A 1K8
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Turbulence encounter during enroute (cruise) defining event
The aircraft
- Maximum gross weight: 774,999 lb
- Landing gear: fixed
- Engine 1:; 0 hours total
- Engine 2:; 0 hours total
- Operator: Air Canada
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The NTSB has not released the docket for this case yet. The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), is usually released when the investigation is nearly complete, and the list here is refreshed when it appears. Check at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.