Apparatus

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sensors Mode-S transponder

AB3F4F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8237B · PIPER PA-28-140/150/160/180 · operated by FLYING 20 CLUB INC

Hex
AB3F4F
Octal
52637517
Decimal
11,222,863
Country
US
Tail
N8237B
Type
P28A
No current signal · last broadcast 8h ago
Flights observed
59
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S AB3F4F.

Country allocation

The ICAO 24-bit address AB3F4F 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
N8237B - 59 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N8237B - Jul 14, 16:40 UTCJul 14, 17:15 UTC35m
2026-07-11 N8237B - Jul 11, 18:15 UTCJul 11, 19:00 UTC45m
2026-07-10 N8237B DXR → DXR Jul 10, 14:30 UTCJul 10, 16:10 UTC1h 40m
2026-07-09 N8237B - Jul 9, 13:55 UTCJul 9, 15:25 UTC1h 30m
2026-07-08 N8237B DXR → DXR Jul 8, 19:10 UTCJul 8, 19:45 UTC35m
2026-07-08 N8237B - Jul 8, 14:05 UTCJul 8, 15:45 UTC1h 40m
2026-07-04 N8237B - Jul 4, 13:00 UTCJul 4, 13:50 UTC50m
2026-07-03 N8237B - Jul 3, 12:10 UTCJul 3, 13:00 UTC50m
2026-07-02 N8237B - Jul 2, 20:30 UTCJul 2, 21:10 UTC40m
2026-07-02 N8237B - Jul 2, 15:15 UTCJul 2, 15:45 UTC30m
2026-06-29 N8237B - Jun 29, 18:25 UTCJun 29, 20:15 UTC1h 50m
2026-06-29 N8237B - Jun 29, 15:49 UTCJun 29, 17:40 UTC1h 50m
2026-06-28 N8237B - Jun 28, 21:24 UTCJun 28, 23:04 UTC1h 40m
2026-06-27 N8237B - Jun 27, 15:14 UTCJun 27, 16:44 UTC1h 30m
2026-06-26 N8237B - Jun 26, 19:24 UTCJun 26, 20:04 UTC40m
2026-06-25 N8237B - Jun 25, 16:09 UTCJun 25, 17:20 UTC1h 10m
2026-06-25 N8237B - Jun 25, 13:09 UTCJun 25, 14:09 UTC1h 0m
2026-06-21 N8237B - Jun 21, 15:25 UTCJun 21, 16:19 UTC55m
2026-06-20 N8237B - Jun 20, 12:24 UTCJun 20, 13:24 UTC1h 0m
2026-06-19 N8237B - Jun 19, 17:59 UTCJun 19, 19:09 UTC1h 10m
2026-06-17 N8237B - Jun 17, 15:00 UTCJun 17, 15:50 UTC50m
2026-06-15 N8237B - Jun 15, 19:50 UTCJun 15, 22:20 UTC2h 30m
2026-06-14 N8237B - Jun 14, 11:35 UTCJun 14, 13:25 UTC1h 50m
2026-06-13 N8237B - Jun 13, 18:50 UTCJun 13, 20:35 UTC1h 45m
2026-06-13 N8237B - Jun 13, 13:45 UTCJun 13, 14:45 UTC1h 0m
2026-06-09 N8237B - Jun 9, 14:20 UTCJun 9, 15:15 UTC55m
2026-06-08 N8237B - Jun 8, 19:05 UTCJun 8, 19:35 UTC30m
2026-06-08 N8237B - Jun 8, 16:50 UTCJun 8, 18:00 UTC1h 10m
2026-06-07 N8237B - Jun 7, 20:50 UTCJun 7, 21:20 UTC30m
2026-06-04 N8237B - Jun 4, 11:45 UTCJun 4, 12:45 UTC1h 0m
2026-06-03 N8237B - Jun 3, 18:40 UTCJun 3, 19:25 UTC45m
2026-06-03 N8237B - Jun 3, 16:30 UTCJun 3, 17:35 UTC1h 5m
2026-05-31 N8237B - May 31, 23:15 UTCMay 31, 23:30 UTC15m
2026-05-31 N8237B - May 31, 20:35 UTCMay 31, 21:35 UTC1h 0m
2026-05-31 N8237B - May 31, 17:35 UTCMay 31, 18:00 UTC25m
2026-05-27 N8237B - May 27, 17:00 UTCMay 27, 18:00 UTC1h 0m
2026-05-27 N8237B - May 27, 14:05 UTCMay 27, 15:05 UTC1h 0m
2026-05-16 N8237B - May 16, 19:00 UTCMay 16, 20:05 UTC1h 5m
2026-05-16 N8237B - May 16, 14:11 UTCMay 16, 14:55 UTC45m
2026-05-12 N8237B - May 12, 17:10 UTCMay 12, 17:55 UTC45m
2026-05-08 N8237B - May 8, 15:20 UTCMay 8, 16:35 UTC1h 15m
2026-05-08 N8237B DXR → DXR May 8, 01:35 UTCMay 8, 01:55 UTC20m
2026-05-01 N8237B - May 1, 18:05 UTCMay 1, 19:35 UTC1h 30m
2026-05-01 N8237B - May 1, 13:55 UTCMay 1, 15:30 UTC1h 35m
2026-04-29 N8237B - Apr 29, 14:00 UTCApr 29, 15:10 UTC1h 10m
2026-04-28 N8237B - Apr 28, 14:15 UTCApr 28, 15:50 UTC1h 35m
2026-04-27 N8237B - Apr 27, 17:15 UTCApr 27, 18:45 UTC1h 30m
2026-04-27 N8237B - Apr 27, 14:30 UTCApr 27, 15:45 UTC1h 15m
2026-04-26 N8237B - Apr 26, 19:20 UTCApr 26, 20:30 UTC1h 10m
2026-04-23 N8237B - Apr 23, 15:15 UTCApr 23, 16:20 UTC1h 5m

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 N8237B page for operator, model, and routing details .

Mode-S AB3F4F frequently asked

What is Mode-S code AB3F4F?
AB3F4F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8237B.
Where is Mode-S AB3F4F registered?
Mode-S code AB3F4F 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 AB3F4F broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB3F4F, octal 52637517, decimal 11,222,863.
What flights does AB3F4F operate?
Mode-S AB3F4F has broadcast 1 distinct callsign, including N8237B.