Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0B439B

ICAO 24-bit transponder address · allocated to Nicaragua

Hex
0B439B
Octal
02641633
Decimal
738,203
Country
NI
No current signal · last broadcast 1d ago
Flights observed
60
Distinct callsigns
1
Country
NI
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 0B439B.

Country allocation

The ICAO 24-bit address 0B439B falls within the block assigned to Nicaragua (NI) by ICAO Annex 10, Volume III. Every aircraft registered in Nicaragua 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
TGFLC - 60 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 TGFLC - Jun 5, 18:25 UTCJun 5, 18:35 UTC10m
2026-06-05 TGFLC - Jun 5, 14:25 UTCJun 5, 14:50 UTC25m
2026-06-05 TGFLC - Jun 5, 13:40 UTCJun 5, 13:45 UTC5m
2026-06-05 TGFLC - Jun 5, 00:10 UTCJun 5, 00:45 UTC35m
2026-06-04 TGFLC - Jun 4, 22:25 UTCJun 4, 23:00 UTC35m
2026-06-04 TGFLC - Jun 4, 13:10 UTCJun 4, 13:50 UTC40m
2026-06-04 TGFLC - Jun 4, 11:30 UTCJun 4, 12:05 UTC35m
2026-05-29 TGFLC - May 29, 16:45 UTCMay 29, 16:55 UTC10m
2026-05-29 TGFLC - May 29, 15:50 UTCMay 29, 16:00 UTC10m
2026-05-28 TGFLC - May 28, 21:35 UTCMay 28, 21:45 UTC10m
2026-05-28 TGFLC - May 28, 13:15 UTCMay 28, 13:30 UTC15m
2026-05-27 TGFLC - May 27, 22:10 UTCMay 27, 22:30 UTC20m
2026-05-27 TGFLC - May 27, 18:00 UTCMay 27, 18:30 UTC30m
2026-05-27 TGFLC - May 27, 16:40 UTCMay 27, 16:45 UTC5m
2026-05-25 TGFLC - May 25, 20:04 UTCMay 25, 20:09 UTC5m
2026-05-25 TGFLC - May 25, 15:45 UTCMay 25, 16:00 UTC15m
2026-05-24 TGFLC - May 24, 15:15 UTCMay 24, 15:20 UTC5m
2026-05-23 TGFLC - May 23, 20:55 UTCMay 23, 21:15 UTC20m
2026-05-23 TGFLC - May 23, 16:20 UTCMay 23, 16:35 UTC15m
2026-05-21 TGFLC - May 21, 12:15 UTCMay 21, 12:20 UTC5m
2026-05-17 TGFLC - May 17, 23:15 UTCMay 17, 23:20 UTC5m
2026-05-17 TGFLC - May 17, 22:20 UTCMay 17, 22:30 UTC10m
2026-05-16 TGFLC - May 16, 23:35 UTCMay 17, 00:10 UTC35m
2026-05-16 TGFLC - May 16, 21:55 UTCMay 16, 22:35 UTC40m
2026-05-16 TGFLC - May 16, 18:25 UTCMay 16, 18:35 UTC10m
2026-05-16 TGFLC - May 16, 17:35 UTCMay 16, 18:20 UTC45m
2026-05-15 TGFLC - May 15, 13:25 UTCMay 15, 13:35 UTC10m
2026-05-12 TGFLC - May 12, 20:30 UTCMay 12, 20:35 UTC5m
2026-05-12 TGFLC - May 12, 17:00 UTCMay 12, 17:15 UTC15m
2026-05-11 TGFLC - May 11, 16:00 UTCMay 11, 16:15 UTC15m
2026-05-11 TGFLC - May 11, 14:20 UTCMay 11, 14:50 UTC30m
2026-05-10 TGFLC - May 10, 00:24 UTCMay 10, 01:00 UTC35m
2026-05-09 TGFLC - May 9, 13:45 UTCMay 9, 14:00 UTC15m
2026-05-07 TGFLC - May 7, 19:00 UTCMay 7, 19:25 UTC25m
2026-05-07 TGFLC - May 7, 15:35 UTCMay 7, 15:45 UTC10m
2026-05-05 TGFLC - May 5, 22:40 UTCMay 5, 22:45 UTC5m
2026-05-05 TGFLC - May 5, 20:55 UTCMay 5, 21:15 UTC20m
2026-05-04 TGFLC - May 4, 16:20 UTCMay 4, 16:25 UTC5m
2026-05-04 TGFLC - May 4, 14:30 UTCMay 4, 15:00 UTC30m
2026-05-04 TGFLC - May 4, 12:50 UTCMay 4, 13:25 UTC35m
2026-05-03 TGFLC - May 3, 21:35 UTCMay 3, 22:09 UTC35m
2026-05-03 TGFLC - May 3, 20:00 UTCMay 3, 20:35 UTC35m
2026-04-30 TGFLC - Apr 30, 23:35 UTCMay 1, 00:05 UTC30m
2026-04-30 TGFLC - Apr 30, 22:05 UTCApr 30, 22:35 UTC30m
2026-04-30 TGFLC - Apr 30, 16:30 UTCApr 30, 17:05 UTC35m
2026-04-30 TGFLC - Apr 30, 14:55 UTCApr 30, 15:25 UTC30m
2026-04-29 TGFLC - Apr 29, 19:25 UTCApr 29, 19:30 UTC5m
2026-04-29 TGFLC - Apr 29, 13:40 UTCApr 29, 13:45 UTC5m
2026-04-28 TGFLC - Apr 28, 19:05 UTCApr 28, 19:10 UTC5m
2026-04-28 TGFLC - Apr 28, 17:30 UTCApr 28, 18:20 UTC50m

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 0B439B frequently asked

What is Mode-S code 0B439B?
0B439B is an ICAO 24-bit transponder address. Allocated to Nicaragua.
Where is Mode-S 0B439B registered?
Mode-S code 0B439B is allocated to Nicaragua (NI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0B439B broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0B439B, octal 02641633, decimal 738,203.
What flights does 0B439B operate?
Mode-S 0B439B has broadcast 1 distinct callsign, including TGFLC.