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Time To Circularize Orbit
in NASA
Telemetry, Tracking, and Command
in NASA
Tunnel Thermal Control
in NASA
132630132631132629
Similar to TTC
A/G - Air to Ground
A/L - AutoLand
A/L - AirLock
A/L - Approach and Landing
AA - Astronomical Applications
AA - Adverse Action
AA - Antenna Assembly
View all in NASA