What does SPADE stand for?

Settable Pneumatic Altitude Detection (ACAE)

Signal Processing and Display Equipment

Single Channel Per Carrier Multiple Access Demand Assignment Equipment (NITA)

Single-Channel-per-Carrier, Pulse-Code-Modulation, Multiple-Access, Demand-Assignment Equipment - Telecommunications

Small Portable Analysis and Diagnostic Equipment - Aircraft maintenance

Space Acquisition Defenese Equipment (SAUS)

Spare Parts Analysis, Documentation and Evaluation (ACAE)

Sparta Acquisition Digital Equipment (MCD)

Speny Air Data Equipment (SAUS)

Sperry Air Data Equipment

Stratospheric Photochemistry, Aerosol and Dynamics Exploration (SAUS)

Stratospheric Photochemistry Aerosols, and Dynamics Expedition - Meteorology

Strike Planning and Damage Estimator - Military