- Equipment Bay / Q-bay (64.6 ft3) behind the cockpit (two 16-inch nadir ports, no FOD shutters); 3 Q-bay rack designs available supporting payloads of up to 825 pounds
- Nose (47.8 ft3) (one 16-inch nadir port, no FOD shutters), supporting payloads of up to 600 pounds
- Wing pods (four 16-inch nadir ports, 3 zenith ports, no FOD shutters)
- Right wing pod is 86 ft3
- Left wing pod is 86 ft3
- Centerline pod (14.0 ft3) (1 nadir port, no FOD shutters)
- Radio systems: UHF, VHF, HF, ATC Transponder, TAVAN, ADF, VOR/LS, GPS
- Inertial Navigation System (INS)
- Temperature and pressure probes
- Camera system
- NAVREC Navigation Recorder
- Additional small instrument accommodation areas: System 20 pod (0.74 ft3), the fuselage aft cavity, the tail cone, and the wingtips and left/right cheek area.
