The Boeing 737 AEW&C (Airborne Early Warning and Control) is a specialized variant of the standard Boeing 737-700, designed primarily for military use. Here are the key differences between the two:

1. Purpose and Role:

   • 737 AEW&C: This aircraft is specifically designed for surveillance, reconnaissance, and command and control missions. It is equipped with advanced radar and sensor systems to detect and track airborne and maritime threats.
   • 737-700: This is a commercial airliner used primarily for passenger and cargo transport.

2. Radar and Sensor Systems:

   • 737 AEW&C: It features a sophisticated radar system, typically the Northrop Grumman Multi-Role Electronically Scanned Array (MESA) radar, which provides 360-degree coverage and can track multiple targets simultaneously. It also includes various electronic warfare and communication systems.
   • 737-700: The standard version does not have these military-grade radar and sensor systems.

3. Airframe Modifications:

   • 737 AEW&C: The airframe is modified to accommodate the radar dome on top of the fuselage, along with additional antennas and equipment necessary for its surveillance role. This may include structural reinforcements to support the added weight and equipment.
   • 737-700: The airframe is designed for commercial operations without the need for such modifications.

4. Crew and Operational Capacity:

   • 737 AEW&C: Typically requires a larger crew, including operators for the radar and other systems, as well as mission commanders. The operational setup is tailored for military missions.
   • 737-700: Generally has a smaller crew focused on commercial flight operations.

5. Mission Systems:

   • 737 AEW&C: Equipped with advanced mission systems for data processing, communication, and coordination with other military assets. This includes secure communication links and data sharing capabilities.
   • 737-700: Standard avionics and systems for commercial flight operations, focusing on passenger safety and comfort.

6. Performance and Range:

   • While both aircraft share similar engines and basic performance characteristics, the AEW&C variant may have different operational profiles due to its mission equipment and weight.

In summary, the Boeing 737 AEW&C is a highly specialized military aircraft with significant modifications and advanced systems compared to the standard Boeing 737-700, which is designed for commercial aviation.