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sensors Mode-S transponder

ACD12F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N925EP · operated by EPIC AVIATION INC

Hex
ACD12F
Octal
53150457
Decimal
11,325,743
Country
US
Tail
N925EP
Type
C172
Broadcasting now · callsign EPI925 · 975 ft
Flights observed
236
Distinct callsigns
1
Country
US
Last broadcast
39m ago

Current position

ACD12F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ACD12F 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
EPI925 - 236 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 EPI925 - Jul 15, 18:50 UTCJul 15, 19:40 UTC50m
2026-07-15 EPI925 - Jul 15, 15:55 UTCJul 15, 16:45 UTC50m
2026-07-15 EPI925 - Jul 15, 13:20 UTCJul 15, 14:45 UTC1h 25m
2026-07-15 EPI925 - Jul 15, 11:15 UTCJul 15, 12:15 UTC1h 0m
2026-07-15 EPI925 - Jul 15, 02:20 UTCJul 15, 02:30 UTC10m
2026-07-14 EPI925 - Jul 14, 14:55 UTCJul 14, 15:40 UTC45m
2026-07-14 EPI925 - Jul 14, 13:35 UTCJul 14, 13:45 UTC10m
2026-07-14 EPI925 - Jul 14, 11:30 UTCJul 14, 12:55 UTC1h 25m
2026-07-14 EPI925 - Jul 14, 01:25 UTCJul 14, 02:35 UTC1h 10m
2026-07-13 EPI925 - Jul 13, 17:05 UTCJul 13, 18:05 UTC1h 0m
2026-07-13 EPI925 - Jul 13, 14:55 UTCJul 13, 15:45 UTC50m
2026-07-12 EPI925 - Jul 12, 15:30 UTCJul 12, 16:05 UTC35m
2026-07-12 EPI925 - Jul 12, 13:30 UTCJul 12, 14:20 UTC50m
2026-07-11 EPI925 - Jul 11, 15:25 UTCJul 11, 16:05 UTC40m
2026-07-10 EPI925 - Jul 10, 22:10 UTCJul 10, 22:45 UTC35m
2026-07-10 EPI925 - Jul 10, 18:45 UTCJul 10, 19:50 UTC1h 5m
2026-07-10 EPI925 - Jul 10, 16:15 UTCJul 10, 17:15 UTC1h 0m
2026-07-10 EPI925 - Jul 10, 13:35 UTCJul 10, 14:25 UTC50m
2026-07-09 EPI925 - Jul 9, 22:45 UTCJul 10, 00:15 UTC1h 30m
2026-07-09 EPI925 - Jul 9, 12:35 UTCJul 9, 13:45 UTC1h 10m
2026-07-08 EPI925 - Jul 8, 17:40 UTCJul 8, 17:55 UTC15m
2026-07-07 EPI925 - Jul 7, 12:35 UTCJul 7, 14:05 UTC1h 30m
2026-07-07 EPI925 - Jul 7, 10:30 UTCJul 7, 11:30 UTC1h 0m
2026-07-06 EPI925 - Jul 6, 21:30 UTCJul 6, 22:50 UTC1h 20m
2026-07-06 EPI925 - Jul 6, 15:55 UTCJul 6, 16:45 UTC50m
2026-07-06 EPI925 - Jul 6, 13:30 UTCJul 6, 14:50 UTC1h 20m
2026-07-05 EPI925 - Jul 5, 16:15 UTCJul 5, 16:55 UTC40m
2026-07-05 EPI925 - Jul 5, 12:10 UTCJul 5, 13:15 UTC1h 5m
2026-07-04 EPI925 - Jul 4, 17:40 UTCJul 4, 19:10 UTC1h 30m
2026-07-04 EPI925 - Jul 4, 14:00 UTCJul 4, 14:40 UTC40m
2026-07-04 EPI925 - Jul 4, 10:50 UTCJul 4, 12:25 UTC1h 35m
2026-07-04 EPI925 - Jul 4, 01:50 UTCJul 4, 02:20 UTC30m
2026-07-03 EPI925 - Jul 3, 18:15 UTCJul 3, 18:40 UTC25m
2026-07-03 EPI925 - Jul 3, 15:55 UTCJul 3, 16:50 UTC55m
2026-07-03 EPI925 - Jul 3, 12:10 UTCJul 3, 13:10 UTC1h 0m
2026-07-02 EPI925 - Jul 2, 23:25 UTCJul 3, 01:40 UTC2h 15m
2026-07-02 EPI925 - Jul 2, 20:15 UTCJul 2, 21:35 UTC1h 20m
2026-07-02 EPI925 - Jul 2, 17:00 UTCJul 2, 18:00 UTC1h 0m
2026-07-02 EPI925 - Jul 2, 13:20 UTCJul 2, 15:10 UTC1h 50m
2026-07-02 EPI925 - Jul 2, 10:45 UTCJul 2, 12:10 UTC1h 25m
2026-07-01 EPI925 - Jul 1, 22:40 UTCJul 2, 00:05 UTC1h 25m
2026-07-01 EPI925 - Jul 1, 18:00 UTCJul 1, 18:15 UTC15m
2026-07-01 EPI925 - Jul 1, 15:40 UTCJul 1, 16:50 UTC1h 10m
2026-07-01 EPI925 - Jul 1, 12:05 UTCJul 1, 13:20 UTC1h 15m
2026-06-30 EPI925 - Jun 30, 16:10 UTCJun 30, 17:10 UTC1h 0m
2026-06-30 EPI925 - Jun 30, 12:20 UTCJun 30, 13:40 UTC1h 20m
2026-06-30 EPI925 - Jun 30, 00:35 UTCJun 30, 02:20 UTC1h 46m
2026-06-29 EPI925 - Jun 29, 22:44 UTCJun 29, 23:29 UTC45m
2026-06-29 EPI925 - Jun 29, 17:30 UTCJun 29, 18:19 UTC50m
2026-06-29 EPI925 - Jun 29, 14:54 UTCJun 29, 15:30 UTC35m

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 N925EP page for operator, model, and routing details .

Mode-S ACD12F frequently asked

What is Mode-S code ACD12F?
ACD12F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N925EP.
Where is Mode-S ACD12F registered?
Mode-S code ACD12F 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 ACD12F broadcasting right now?
Yes. Mode-S ACD12F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACD12F, octal 53150457, decimal 11,325,743.
What flights does ACD12F operate?
Mode-S ACD12F has broadcast 1 distinct callsign, including EPI925.