Incident · 2011-01-20
What the record says
- Event date
- 2011-01-20
- Event type
- Incident
- Highest injury level
- No injuries
- Aircraft
- BOEING 777 (N766AN)
- Operating rule
- Part 121
- Operator
- operator not named in the NTSB record
Probable cause
Incomplete and incorrect coordination between air traffic controllers that resulted in the 777 and the two C17s being cleared to maintain the same altitude. Contributing to the incident was the controllers’ non-adherence to established communications phraseology and incorrect data entry into the radar data blocks for each aircraft.
Source: NTSB case OPS11IA246Flight crew
No flight-crew details recorded in the NTSB accident database for this event.
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.