# NTSB Incident OPS11IA246
> **BOEING 777** · 2011-01-21 · 80 SE of JFK (Atlantic Ocean), NY, USA · —
## Event
- **NTSB number:** OPS11IA246
- **Event ID:** 20110121X43037
- **Type:** Incident
- **Date:** 2011-01-21
- **Location:** 80 SE of JFK (Atlantic Ocean), NY, USA
## Injuries
- **Highest injury:** —
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 0
## Aircraft
- **Make:** BOEING
- **Model:** 777
- **Registration:** N766AN
- **FAR Part:** 121
- **Engines:** —
- **Damage:** —
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## 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.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=OPS11IA246) · AI Analytics · CC0 1.0*