An aircraft was dispatched to a foreign destination with the TCAS inoperative but the crew did not realize it until later that the ops specification and MEL prevent dispatch to a foreign destination with the TCAS inoperative.

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Attributes
ACN	1286727
Time
Date	201508
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Other Preflight planning
Flight Plan	IFR
Component
Aircraft Component	Traffic Collision Avoidance System (TCAS)
Person 1
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 42.98 Flight Crew Type 799.98
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

During the pre-flight process; we as a crew and myself as an individual did not thoroughly study the MEL for the deferred TCAS; specifically the spec notes. Had we done so; we would have realized that the aircraft could not operate to a non-us destination.

Original NASA ASRS Text

Title: An aircraft was dispatched to a foreign destination with the TCAS inoperative but the crew did not realize it until later that the Ops SPEC and MEL prevent dispatch to a foreign destination with the TCAS inoperative.

Narrative: During the pre-flight process; we as a crew and myself as an individual did not thoroughly study the MEL for the deferred TCAS; specifically the Spec Notes. Had we done so; we would have realized that the aircraft could not operate to a non-US destination.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.