NTSB Identification: OPS08IA014A
Incident occurred Thursday, August 28, 2008 in
Probable Cause Approval Date: 02/19/2009
Aircraft: Boeing B744, registration:
Injuries: 159 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

On August 28, 2008, at approximately 1837 Atlantic standard time, Russian Registered Transaero flight 554, a Boeing 744, and Delta Airlines flight 845, a Boeing 738, came within zero feet vertical and 1 minute lateral separation (15 minutes is required in non-radar environment) at FL330 179N San Juan, PR. Transaero 554 descended 200-300 feet due to a traffic alert and collision avoidance system (TCAS) resolution alert.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

The San Juan CERAP controllers failure to ensure the two aircraft were properly separated using non-radar separation standards.

Full narrative available

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