Apparatus

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sensors Mode-S transponder

AB7ADD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N839MA · CESSNA 208 Caravan · operated by BANK OF UTAH TRUSTEE

Hex
AB7ADD
Octal
52675335
Decimal
11,238,109
Country
US
Tail
N839MA
Type
C208
No current signal · last broadcast 7d ago
Flights observed
271
Distinct callsigns
2
Country
US
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S AB7ADD.

Country allocation

The ICAO 24-bit address AB7ADD 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 2 distinct

Callsign Airline Flights Last seen
N839MA - 263 2026-07-15
FDY39 - 8 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 N839MA - Jul 15, 04:40 UTCJul 15, 05:35 UTC55m
2026-07-14 FDY39 - Jul 14, 22:45 UTCJul 14, 23:20 UTC35m
2026-07-14 FDY39 - Jul 14, 16:25 UTCJul 14, 16:45 UTC20m
2026-07-14 FDY39 - Jul 14, 08:10 UTCJul 14, 08:20 UTC10m
2026-07-14 FDY39 - Jul 14, 07:30 UTCJul 14, 07:35 UTC5m
2026-07-14 FDY39 - Jul 14, 05:35 UTCJul 14, 06:05 UTC30m
2026-07-13 N839MA - Jul 13, 23:25 UTCJul 13, 23:35 UTC10m
2026-07-13 N839MA - Jul 13, 17:25 UTCJul 13, 17:50 UTC25m
2026-07-13 N839MA - Jul 13, 16:25 UTCJul 13, 16:40 UTC15m
2026-07-13 N839MA - Jul 13, 04:35 UTCJul 13, 04:50 UTC15m
2026-07-13 N839MA - Jul 13, 03:40 UTCJul 13, 03:55 UTC15m
2026-07-13 N839MA - Jul 13, 02:10 UTCJul 13, 02:35 UTC25m
2026-07-13 N839MA - Jul 13, 01:05 UTCJul 13, 01:20 UTC15m
2026-07-12 N839MA - Jul 12, 23:50 UTCJul 13, 00:15 UTC25m
2026-07-12 N839MA - Jul 12, 22:00 UTCJul 12, 22:10 UTC10m
2026-07-12 N839MA - Jul 12, 20:25 UTCJul 12, 21:00 UTC35m
2026-07-12 N839MA - Jul 12, 15:55 UTCJul 12, 16:10 UTC15m
2026-07-12 N839MA - Jul 12, 03:20 UTCJul 12, 03:30 UTC10m
2026-07-12 N839MA - Jul 12, 00:30 UTCJul 12, 00:55 UTC25m
2026-07-11 N839MA - Jul 11, 23:20 UTCJul 11, 23:40 UTC20m
2026-07-11 N839MA - Jul 11, 22:01 UTCJul 11, 22:25 UTC25m
2026-07-11 N839MA - Jul 11, 21:00 UTCJul 11, 21:20 UTC20m
2026-07-11 N839MA - Jul 11, 19:40 UTCJul 11, 20:05 UTC25m
2026-07-11 N839MA - Jul 11, 18:30 UTCJul 11, 18:50 UTC20m
2026-07-11 N839MA - Jul 11, 16:20 UTCJul 11, 17:40 UTC1h 20m
2026-07-11 N839MA - Jul 11, 06:15 UTCJul 11, 07:25 UTC1h 10m
2026-07-11 N839MA - Jul 11, 05:05 UTCJul 11, 05:35 UTC30m
2026-07-11 N839MA - Jul 11, 03:50 UTCJul 11, 04:15 UTC25m
2026-07-11 N839MA - Jul 11, 02:55 UTCJul 11, 03:15 UTC20m
2026-07-11 N839MA - Jul 11, 01:45 UTCJul 11, 02:00 UTC15m
2026-07-10 N839MA - Jul 10, 23:30 UTCJul 11, 00:40 UTC1h 10m
2026-07-10 N839MA - Jul 10, 22:05 UTCJul 10, 22:25 UTC20m
2026-07-10 N839MA - Jul 10, 20:45 UTCJul 10, 20:55 UTC10m
2026-07-10 N839MA - Jul 10, 17:40 UTCJul 10, 17:55 UTC15m
2026-07-10 N839MA - Jul 10, 16:35 UTCJul 10, 16:50 UTC15m
2026-07-09 N839MA - Jul 9, 05:05 UTCJul 9, 05:20 UTC15m
2026-07-09 N839MA - Jul 9, 04:10 UTCJul 9, 04:20 UTC10m
2026-07-09 N839MA - Jul 9, 03:05 UTCJul 9, 03:15 UTC10m
2026-07-09 N839MA - Jul 9, 01:35 UTCJul 9, 01:55 UTC20m
2026-07-09 N839MA - Jul 9, 00:30 UTCJul 9, 00:40 UTC10m
2026-07-08 N839MA - Jul 8, 20:50 UTCJul 8, 21:05 UTC15m
2026-07-08 N839MA - Jul 8, 19:45 UTCJul 8, 20:00 UTC15m
2026-07-08 N839MA - Jul 8, 18:35 UTCJul 8, 18:50 UTC15m
2026-07-08 N839MA - Jul 8, 17:30 UTCJul 8, 18:00 UTC30m
2026-07-08 N839MA - Jul 8, 16:25 UTCJul 8, 16:55 UTC30m
2026-07-08 N839MA - Jul 8, 05:05 UTCJul 8, 06:20 UTC1h 15m
2026-07-08 N839MA - Jul 8, 04:05 UTCJul 8, 04:25 UTC20m
2026-07-08 N839MA - Jul 8, 01:50 UTCJul 8, 02:15 UTC25m
2026-07-08 N839MA - Jul 8, 00:20 UTCJul 8, 00:35 UTC15m
2026-07-07 N839MA - Jul 7, 23:20 UTCJul 7, 23:40 UTC20m

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 N839MA page for operator, model, and routing details .

Mode-S AB7ADD frequently asked

What is Mode-S code AB7ADD?
AB7ADD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N839MA.
Where is Mode-S AB7ADD registered?
Mode-S code AB7ADD 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 AB7ADD broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB7ADD, octal 52675335, decimal 11,238,109.
What flights does AB7ADD operate?
Mode-S AB7ADD has broadcast 2 distinct callsigns, including N839MA, FDY39.