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sensors Mode-S transponder

AB44BD

ICAO 24-bit transponder address · allocated to United States

Hex
AB44BD
Octal
52642275
Decimal
11,224,253
Country
US
No current signal · last broadcast Jul 26, 06:55 UTC
Flights observed
142
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 06:55 UTC

Last known position

Most recent position reported by Mode-S AB44BD.

Country allocation

The ICAO 24-bit address AB44BD 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
N825PK - 142 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N825PK - Jul 26, 05:10 UTCJul 26, 06:55 UTC1h 46m
2026-07-26 N825PK - Jul 26, 03:50 UTCJul 26, 04:35 UTC45m
2026-07-25 N825PK HSH → HSH Jul 25, 18:55 UTCJul 25, 19:45 UTC50m
2026-07-25 N825PK HSH → HSH Jul 25, 15:10 UTCJul 25, 16:45 UTC1h 35m
2026-07-24 N825PK HSH → HSH Jul 24, 22:05 UTCJul 24, 22:20 UTC15m
2026-07-24 N825PK - Jul 24, 17:05 UTCJul 24, 18:00 UTC55m
2026-07-24 N825PK - Jul 24, 15:40 UTCJul 24, 16:25 UTC45m
2026-07-24 N825PK HSH → HSH Jul 24, 12:45 UTCJul 24, 14:25 UTC1h 40m
2026-07-23 N825PK - Jul 23, 17:40 UTCJul 23, 18:40 UTC1h 0m
2026-07-23 N825PK HSH → HII Jul 23, 16:35 UTCJul 23, 17:35 UTC1h 0m
2026-07-23 N825PK HSH → HSH Jul 23, 14:05 UTCJul 23, 15:50 UTC1h 45m
2026-07-22 N825PK - Jul 22, 15:50 UTCJul 22, 16:05 UTC15m
2026-07-22 N825PK - Jul 22, 14:50 UTCJul 22, 15:00 UTC10m
2026-07-21 N825PK HSH → HSH Jul 21, 15:00 UTCJul 21, 15:40 UTC40m
2026-07-20 N825PK HSH → HSH Jul 20, 16:05 UTCJul 20, 16:40 UTC35m
2026-07-20 N825PK HSH → HSH Jul 20, 13:40 UTCJul 20, 15:10 UTC1h 30m
2026-07-19 N825PK - Jul 19, 17:05 UTCJul 19, 17:40 UTC35m
2026-07-19 N825PK - Jul 19, 15:50 UTCJul 19, 16:20 UTC30m
2026-07-18 N825PK HSH → HSH Jul 18, 18:45 UTCJul 18, 19:30 UTC45m
2026-07-18 N825PK - Jul 18, 17:35 UTCJul 18, 17:45 UTC10m
2026-07-18 N825PK - Jul 18, 16:40 UTCJul 18, 16:50 UTC10m
2026-07-17 N825PK - Jul 17, 19:15 UTCJul 17, 19:25 UTC10m
2026-07-17 N825PK - Jul 17, 18:34 UTCJul 17, 18:44 UTC10m
2026-07-17 N825PK HSH → HSH Jul 17, 16:34 UTCJul 17, 17:20 UTC45m
2026-07-17 N825PK - Jul 17, 15:05 UTCJul 17, 15:40 UTC35m
2026-07-17 N825PK - Jul 17, 13:35 UTCJul 17, 14:24 UTC50m
2026-07-16 N825PK HSH → HSH Jul 16, 18:40 UTCJul 16, 19:40 UTC1h 0m
2026-07-16 N825PK - Jul 16, 16:35 UTCJul 16, 16:44 UTC10m
2026-07-16 N825PK - Jul 16, 15:40 UTCJul 16, 15:49 UTC10m
2026-07-15 N825PK - Jul 15, 15:40 UTCJul 15, 15:55 UTC15m
2026-07-15 N825PK - Jul 15, 14:00 UTCJul 15, 14:10 UTC10m
2026-07-14 N825PK HSH → HSH Jul 14, 20:35 UTCJul 14, 21:40 UTC1h 5m
2026-07-14 N825PK - Jul 14, 18:05 UTCJul 14, 18:40 UTC35m
2026-07-14 N825PK - Jul 14, 17:00 UTCJul 14, 17:25 UTC25m
2026-07-14 N825PK - Jul 14, 15:20 UTCJul 14, 15:30 UTC10m
2026-07-14 N825PK - Jul 14, 13:50 UTCJul 14, 14:05 UTC15m
2026-07-13 N825PK - Jul 13, 14:55 UTCJul 13, 15:45 UTC50m
2026-07-13 N825PK - Jul 13, 13:50 UTCJul 13, 14:00 UTC10m
2026-07-09 N825PK HSH → HSH Jul 9, 17:00 UTCJul 9, 17:55 UTC55m
2026-07-09 N825PK HSH → HSH Jul 9, 13:50 UTCJul 9, 15:00 UTC1h 10m
2026-07-08 N825PK HSH → HSH Jul 8, 19:20 UTCJul 8, 19:55 UTC35m
2026-07-07 N825PK - Jul 7, 18:20 UTCJul 7, 18:25 UTC5m
2026-07-07 N825PK - Jul 7, 17:20 UTCJul 7, 17:30 UTC10m
2026-07-07 N825PK HSH → HSH Jul 7, 15:40 UTCJul 7, 16:40 UTC1h 0m
2026-07-06 N825PK - Jul 6, 16:20 UTCJul 6, 16:40 UTC20m
2026-07-06 N825PK - Jul 6, 15:15 UTCJul 6, 15:25 UTC10m
2026-07-05 N825PK - Jul 5, 22:00 UTCJul 5, 22:10 UTC10m
2026-07-05 N825PK - Jul 5, 18:35 UTCJul 5, 19:30 UTC55m
2026-07-05 N825PK - Jul 5, 16:15 UTCJul 5, 16:25 UTC10m
2026-07-05 N825PK - Jul 5, 13:50 UTCJul 5, 14:20 UTC30m

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.

Mode-S AB44BD frequently asked

What is Mode-S code AB44BD?
AB44BD is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S AB44BD registered?
Mode-S code AB44BD 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 AB44BD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 06:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB44BD, octal 52642275, decimal 11,224,253.
What flights does AB44BD operate?
Mode-S AB44BD has broadcast 1 distinct callsign, including N825PK.