# NTSB Accident DCA00MA006
> **Boeing 767-366-ER** · 1999-10-31 · ATLANTIC OCEAN, AO · FATL
## Event
- **NTSB number:** DCA00MA006
- **Event ID:** 20020322X00388
- **Type:** Accident
- **Date:** 1999-10-31
- **Location:** ATLANTIC OCEAN, AO
## Injuries
- **Highest injury:** FATL
- **Fatal:** 217
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 217
## Aircraft
- **Make:** Boeing
- **Model:** 767-366-ER
- **Registration:** SUGAP
- **FAR Part:** 129
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** NITE
- **Weather:** VMC
## Probable cause

The National Transportation Safety Board determines that the probable cause of the EgyptAir flight 990 accident is the airplane's departure from normal cruise flight and subsequent impact with the Atlantic Ocean as a result of the relief first officer's flight control inputs.  The reason for the relief first officer's actions was not determined.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA00MA006) · AI Analytics · CC0 1.0*