This USN machine-embroidered patch measures 3.2" by 3.2", used condition. 

"Naval Air Technical Training Center" (NATTC) generally refers to a facility within the United States Navy that provides technical training for personnel in various aviation-related fields. Naval Air Stations (NAS) are installations that support naval aviation operations, and some NAS locations include a NATTC.

Key points about Naval Air Technical Training Centers and Naval Air Stations include:

1. Training Facility: NATTCs are training centers dedicated to providing technical education and training for naval aviation personnel. They focus on preparing sailors for specific roles and responsibilities related to aircraft maintenance, aviation electronics, aviation ordnance, and other specialized fields.

2. Aviation Training: The training offered at NATTCs covers a wide range of aviation-related subjects, including aircraft systems, avionics, maintenance procedures, safety protocols, and other technical skills required for naval aviation.

3. Specialized Schools: Within a NATTC, there are often various specialized schools or training programs that cater to specific Navy ratings (occupational specialties) related to aviation. For example, there might be schools for aviation electricians, structural mechanics, or air traffic controllers.

4. Location at Naval Air Stations: NATTCs are commonly associated with Naval Air Stations, which are major naval aviation facilities. Naval Air Stations serve as operational bases for aircraft squadrons, maintenance facilities, and training establishments.

5. Examples of NAS Locations with NATTCs: One example is NAS Pensacola in Florida, which houses the Naval Air Technical Training Center Pensacola. Another example is NAS Lemoore in California, which has a training center for aviation maintenance.

6. Role in Fleet Readiness: NATTCs play a crucial role in maintaining the readiness of naval aviation personnel. By providing high-quality technical training, these centers contribute to the overall effectiveness and safety of naval aviation operations.