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sensors Mode-S transponder

AB4C0C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N827ND · PIPER PA-28-140/150/160/180 · operated by UND AEROSPACE FOUNDATION

Hex
AB4C0C
Octal
52646014
Decimal
11,226,124
Country
US
Tail
N827ND
Type
P28A
Broadcasting now · callsign NDU827 · 6,350 ft
Flights observed
214
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 16:15 UTC

Current position

AB4C0C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AB4C0C 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
NDU827 - 214 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 NDU827 AZA → AZA Jul 23, 15:05 UTCJul 23, 16:15 UTC1h 10m
2026-07-23 NDU827 AZA → AZA Jul 23, 12:05 UTCJul 23, 14:10 UTC2h 5m
2026-07-23 NDU827 AZA → AZA Jul 23, 03:45 UTCJul 23, 04:05 UTC20m
2026-07-23 NDU827 - Jul 23, 00:00 UTCJul 23, 01:05 UTC1h 5m
2026-07-22 NDU827 - Jul 22, 18:35 UTCJul 22, 19:50 UTC1h 15m
2026-07-22 NDU827 - Jul 22, 15:30 UTCJul 22, 17:15 UTC1h 45m
2026-07-22 NDU827 - Jul 22, 12:55 UTCJul 22, 14:30 UTC1h 35m
2026-07-21 NDU827 - Jul 21, 21:15 UTCJul 21, 22:25 UTC1h 10m
2026-07-21 NDU827 - Jul 21, 18:40 UTCJul 21, 19:40 UTC1h 0m
2026-07-21 NDU827 - Jul 21, 16:05 UTCJul 21, 17:20 UTC1h 15m
2026-07-21 NDU827 - Jul 21, 13:20 UTCJul 21, 14:45 UTC1h 25m
2026-07-21 NDU827 GYR → AZA Jul 21, 00:55 UTCJul 21, 01:30 UTC35m
2026-07-20 NDU827 - Jul 20, 22:25 UTCJul 20, 23:00 UTC35m
2026-07-20 NDU827 - Jul 20, 19:50 UTCJul 20, 21:00 UTC1h 10m
2026-07-20 NDU827 - Jul 20, 16:15 UTCJul 20, 18:00 UTC1h 45m
2026-07-20 NDU827 - Jul 20, 13:00 UTCJul 20, 14:40 UTC1h 40m
2026-07-19 NDU827 AZA → AZA Jul 19, 16:05 UTCJul 19, 17:30 UTC1h 25m
2026-07-19 NDU827 - Jul 19, 13:35 UTCJul 19, 14:55 UTC1h 20m
2026-07-18 NDU827 AZA → AZA Jul 18, 18:55 UTCJul 18, 19:45 UTC50m
2026-07-18 NDU827 - Jul 18, 15:40 UTCJul 18, 17:20 UTC1h 40m
2026-07-18 NDU827 - Jul 18, 13:40 UTCJul 18, 14:45 UTC1h 5m
2026-07-17 NDU827 - Jul 17, 17:40 UTCJul 17, 18:29 UTC50m
2026-07-17 NDU827 - Jul 17, 15:15 UTCJul 17, 16:44 UTC1h 30m
2026-07-17 NDU827 - Jul 17, 13:25 UTCJul 17, 14:30 UTC1h 5m
2026-07-16 NDU827 - Jul 16, 19:40 UTCJul 16, 20:00 UTC20m
2026-07-16 NDU827 - Jul 16, 18:10 UTCJul 16, 18:55 UTC45m
2026-07-16 NDU827 - Jul 16, 16:15 UTCJul 16, 17:20 UTC1h 5m
2026-07-16 NDU827 - Jul 16, 13:34 UTCJul 16, 14:45 UTC1h 10m
2026-07-15 NDU827 - Jul 15, 18:45 UTCJul 15, 19:40 UTC55m
2026-07-15 NDU827 - Jul 15, 15:30 UTCJul 15, 17:10 UTC1h 40m
2026-07-15 NDU827 AZA → AZA Jul 15, 13:05 UTCJul 15, 14:15 UTC1h 10m
2026-07-14 NDU827 - Jul 14, 20:00 UTCJul 14, 21:45 UTC1h 45m
2026-07-14 NDU827 - Jul 14, 16:30 UTCJul 14, 17:40 UTC1h 10m
2026-07-14 NDU827 AZA → AZA Jul 14, 13:40 UTCJul 14, 14:55 UTC1h 15m
2026-07-13 NDU827 - Jul 13, 20:20 UTCJul 13, 22:00 UTC1h 40m
2026-07-13 NDU827 - Jul 13, 16:50 UTCJul 13, 18:20 UTC1h 30m
2026-07-13 NDU827 - Jul 13, 14:45 UTCJul 13, 15:45 UTC1h 0m
2026-07-12 NDU827 - Jul 12, 16:01 UTCJul 12, 17:10 UTC1h 10m
2026-07-11 NDU827 - Jul 11, 16:20 UTCJul 11, 18:10 UTC1h 50m
2026-07-11 NDU827 AZA → AZA Jul 11, 14:00 UTCJul 11, 15:15 UTC1h 15m
2026-07-10 NDU827 - Jul 10, 18:25 UTCJul 10, 19:10 UTC45m
2026-07-10 NDU827 - Jul 10, 14:35 UTCJul 10, 16:35 UTC2h 0m
2026-07-09 NDU827 - Jul 9, 14:25 UTCJul 9, 15:45 UTC1h 20m
2026-07-08 NDU827 - Jul 8, 17:50 UTCJul 8, 18:10 UTC20m
2026-07-08 NDU827 - Jul 8, 16:40 UTCJul 8, 17:00 UTC20m
2026-07-08 NDU827 - Jul 8, 14:05 UTCJul 8, 15:20 UTC1h 15m
2026-07-08 NDU827 - Jul 8, 04:05 UTCJul 8, 06:35 UTC2h 30m
2026-07-07 NDU827 - Jul 7, 22:40 UTCJul 8, 01:40 UTC3h 0m
2026-07-07 NDU827 - Jul 7, 18:15 UTCJul 7, 20:10 UTC1h 55m
2026-07-07 NDU827 - Jul 7, 14:35 UTCJul 7, 16:45 UTC2h 10m

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 N827ND page for operator, model, and routing details .

Mode-S AB4C0C frequently asked

What is Mode-S code AB4C0C?
AB4C0C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N827ND.
Where is Mode-S AB4C0C registered?
Mode-S code AB4C0C 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 AB4C0C broadcasting right now?
Yes. Mode-S AB4C0C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4C0C, octal 52646014, decimal 11,226,124.
What flights does AB4C0C operate?
Mode-S AB4C0C has broadcast 1 distinct callsign, including NDU827.