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sensors Mode-S transponder

AB7F45

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N84UC · AIRBUS HELICOPTERS EC-145 · operated by UC HEALTH LLC

Hex
AB7F45
Octal
52677505
Decimal
11,239,237
Country
US
Tail
N84UC
Type
EC45
No current signal · last broadcast Jul 25, 20:15 UTC
Flights observed
151
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 20:15 UTC

Last known position

Most recent position reported by Mode-S AB7F45.

Country allocation

The ICAO 24-bit address AB7F45 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N84UC - 151 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N84UC - Jul 25, 19:30 UTCJul 25, 20:15 UTC45m
2026-07-25 N84UC - Jul 25, 15:45 UTCJul 25, 15:55 UTC10m
2026-07-25 N84UC - Jul 25, 14:30 UTCJul 25, 14:45 UTC15m
2026-07-22 N84UC - Jul 22, 22:10 UTCJul 22, 23:15 UTC1h 5m
2026-07-22 N84UC - Jul 22, 14:00 UTCJul 22, 14:15 UTC15m
2026-07-22 N84UC - Jul 22, 13:20 UTCJul 22, 13:30 UTC10m
2026-07-20 N84UC - Jul 20, 18:20 UTCJul 20, 18:35 UTC15m
2026-07-20 N84UC - Jul 20, 16:20 UTCJul 20, 17:15 UTC55m
2026-07-20 N84UC - Jul 20, 15:20 UTCJul 20, 15:40 UTC20m
2026-07-20 N84UC - Jul 20, 13:30 UTCJul 20, 14:40 UTC1h 10m
2026-07-15 N84UC - Jul 15, 22:10 UTCJul 15, 22:20 UTC10m
2026-07-15 N84UC - Jul 15, 20:55 UTCJul 15, 21:05 UTC10m
2026-07-15 N84UC - Jul 15, 17:35 UTCJul 15, 17:55 UTC20m
2026-07-15 N84UC - Jul 15, 16:20 UTCJul 15, 16:50 UTC30m
2026-07-14 N84UC - Jul 14, 22:25 UTCJul 14, 22:35 UTC10m
2026-07-14 N84UC - Jul 14, 21:10 UTCJul 14, 21:20 UTC10m
2026-07-10 N84UC - Jul 10, 21:50 UTCJul 10, 22:50 UTC1h 0m
2026-07-08 N84UC - Jul 8, 20:10 UTCJul 8, 20:25 UTC15m
2026-07-08 N84UC - Jul 8, 19:05 UTCJul 8, 19:30 UTC25m
2026-07-06 N84UC - Jul 6, 18:50 UTCJul 6, 19:05 UTC15m
2026-07-06 N84UC - Jul 6, 16:40 UTCJul 6, 17:10 UTC30m
2026-07-06 N84UC - Jul 6, 14:00 UTCJul 6, 14:10 UTC10m
2026-07-06 N84UC - Jul 6, 12:55 UTCJul 6, 13:05 UTC10m
2026-07-05 N84UC - Jul 5, 20:55 UTCJul 5, 21:10 UTC15m
2026-07-05 N84UC - Jul 5, 20:00 UTCJul 5, 20:10 UTC10m
2026-07-04 N84UC - Jul 4, 17:10 UTCJul 4, 17:25 UTC15m
2026-07-04 N84UC - Jul 4, 15:10 UTCJul 4, 15:20 UTC10m
2026-07-02 N84UC - Jul 2, 20:10 UTCJul 2, 20:30 UTC20m
2026-07-02 N84UC - Jul 2, 19:15 UTCJul 2, 19:35 UTC20m
2026-07-02 N84UC - Jul 2, 18:05 UTCJul 2, 18:15 UTC10m
2026-07-02 N84UC - Jul 2, 14:15 UTCJul 2, 14:25 UTC10m
2026-07-02 N84UC - Jul 2, 13:20 UTCJul 2, 13:30 UTC10m
2026-07-01 N84UC - Jul 1, 22:25 UTCJul 1, 22:55 UTC30m
2026-07-01 N84UC - Jul 1, 21:20 UTCJul 1, 21:45 UTC25m
2026-06-30 N84UC - Jun 30, 16:50 UTCJun 30, 17:10 UTC20m
2026-06-30 N84UC - Jun 30, 15:20 UTCJun 30, 15:45 UTC25m
2026-06-29 N84UC - Jun 29, 21:54 UTCJun 29, 22:55 UTC1h 0m
2026-06-29 N84UC - Jun 29, 15:19 UTCJun 29, 15:30 UTC10m
2026-06-29 N84UC - Jun 29, 14:19 UTCJun 29, 14:34 UTC15m
2026-06-29 N84UC - Jun 29, 02:39 UTCJun 29, 03:10 UTC30m
2026-06-27 N84UC - Jun 27, 23:55 UTCJun 28, 00:04 UTC10m
2026-06-27 N84UC - Jun 27, 23:10 UTCJun 27, 23:19 UTC10m
2026-06-21 N84UC - Jun 21, 18:14 UTCJun 21, 18:44 UTC30m
2026-06-21 N84UC - Jun 21, 16:34 UTCJun 21, 17:29 UTC55m
2026-06-21 N84UC - Jun 21, 15:44 UTCJun 21, 15:54 UTC10m
2026-06-19 N84UC - Jun 19, 17:39 UTCJun 19, 18:05 UTC25m
2026-06-19 N84UC - Jun 19, 16:29 UTCJun 19, 16:44 UTC15m
2026-06-15 N84UC - Jun 15, 21:25 UTCJun 15, 21:40 UTC15m
2026-06-15 N84UC - Jun 15, 19:35 UTCJun 15, 20:04 UTC30m
2026-06-15 N84UC - Jun 15, 16:30 UTCJun 15, 16:40 UTC10m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N84UC page for operator, model, and routing details .

Mode-S AB7F45 frequently asked

What is Mode-S code AB7F45?
AB7F45 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N84UC.
Where is Mode-S AB7F45 registered?
Mode-S code AB7F45 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AB7F45 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB7F45, octal 52677505, decimal 11,239,237.
What flights does AB7F45 operate?
Mode-S AB7F45 has broadcast 1 distinct callsign, including N84UC.