Instrument and Flight Research
Named as the FAA publishes it on its approvals.
Approved to make 7 classes of equipment. FAA spelling: Instrument and Flight Research.
Equipment approvals technical standard order authorisations
1990-01-01TSO-C5 · Direction Instrument, Nonmagnetic, Gyro-Stabilized Type (Directional Gyro) · * · instruments and avionics
1990-01-01TSO-C2D · AIRSPEED INSTRUMENTS · * · instruments and avionics
1990-01-01TSO-C7D · Direction Instrument, Magnetic Non-Stabilized Type (Magnetic Compass) · * · instruments and avionics
TSO-C6 · Direction Instrument, Magnetic (Gyro-Stabilized Type) · *, *, * · instruments and avionics
TSO-C10B · Altimeter, Pressure Actuated, Sensitive Type · *, *, * · instruments and avionics
TSO-C8C · Vertical Velocity Instruments (Rate-Of-Climb) · * · other and general
TSO-C6C · Direction Instrument, Magnetic (Gyroscopically Stabilized) · *, *, * · instruments and avionics
Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.