P/N: 55d120
Category: General Aircraft Parts
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
| Condition | Stock |
|---|---|
| As Removed | 1 Available |
The 55d120 is an altitude digitizer that converts static-system pressure altitude into digital signals for Mode C/S transponder reporting. It translates continuous pressure data into Gillham (Gray) code format, enabling aircraft altitude information to reach ATC surveillance and ADS-B systems. Installed between the aircraft static line and transponder interface, this unit conforms to FAA TSO-C88 requirements.
Installation and testing must follow the applicable aircraft maintenance manual and comply with 14 CFR 91.217 transponder regulations.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
The 55d120 is an altitude digitizer that converts static-system pressure altitude into digital signals for Mode C/S transponder reporting. It translates continuous pressure data into Gillham (Gray) code format, enabling aircraft altitude information to reach ATC surveillance and ADS-B systems.
The 55d120 is currently available in the following conditions: As Removed. Each condition reflects the part's maintenance history and certification status per FAA standards.
The 55d120 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.
Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.