Model Number: Tel-Instruments (TIC) T-48D

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Tel-Instruments (TIC) T-48D Transponder/DME Test Set

Aero Express is an Authorized Distributor for the T-48D Test Set.

To view click here: Standard Warranty Policy  T-48D Operation Manual

Aero Express will buy, sell, trade, and rent the T-48D depending on your needs.  The Tel-Instruments (TIC) T-48D is completely self-contained and housed in an aluminum carrying case.  It is specially designed to test transponder modes 1, 2, 3A, C, S and DME on 3 pre-selected channels.


  • The test set is capable of decoding the Ident and Emergency codes whenever they are activated
  • Operating controls and the data display are mounted on the test set front panel
  • The T-48D is a battery powered portable unit used to test operations of transponder systems antenna to antenna when installed in the aircraft, or connected directly to the UUT

2-Year Factory Tel-Instrument Warranty on all new products.


Express Calibration is the Authorized ISO-17025 Calibration and Repair shop for the Tel-Instruments TIC T-48D.  Visit for full capabilities.

All units will be sold with a current calibration certificate. If factory new, a manufacturer’s Certificate of Conformance (C of C) will be provided.

Since its inception, Express Calibration Services has supported Aero Express’ endeavors in providing test equipment support services. Express Calibration Services is an ISO-17025 certified calibration lab. Express Calibration Services has been appointed the exclusive calibration and repair facility for Tel-Instruments in the United States.

They perform calibrations for General Aviation, Corporate Aviation, OEMs, FAA Repair Stations, Military, as well as Regional and Air Transport Airlines. Express Calibration Services offers their services when you have a requirement for calibration or repair of your test equipment.