Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC2591

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N882DC · SWEARINGEN Metro · operated by CBG LLC

Hex
AC2591
Octal
53022621
Decimal
11,281,809
Country
US
Tail
N882DC
Type
SW4
No current signal · last broadcast 4h ago
Flights observed
131
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S AC2591.

Country allocation

The ICAO 24-bit address AC2591 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 20 distinct

Callsign Airline Flights Last seen
LYM5930 Key Lime Air 8 2026-05-30
LYM5920 Key Lime Air 8 2026-05-29
LYM4212 Key Lime Air 8 2026-05-29
LYM4210 Key Lime Air 8 2026-05-29
LYM3110 Key Lime Air 7 2026-05-30
LYM3106 Key Lime Air 7 2026-05-17
LYM3104 Key Lime Air 7 2026-05-29
LYM3103 Key Lime Air 7 2026-05-28
LYM5940 Key Lime Air 6 2026-05-23
LYM5910 Key Lime Air 6 2026-05-23
LYM4235 Key Lime Air 6 2026-05-28
LYM4230 Key Lime Air 6 2026-05-28
LYM4133 Key Lime Air 6 2026-05-22
LYM3109 Key Lime Air 6 2026-05-15
LYM3105 Key Lime Air 6 2026-05-28
LYM3102 Key Lime Air 6 2026-05-28
LYM3101 Key Lime Air 6 2026-05-28
LYM4144 Key Lime Air 4 2026-05-22
LYM820 Key Lime Air 3 2026-05-18
LYM4122 Key Lime Air 3 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 LYM3110 CEZ → DEN May 30, 02:30 UTCMay 30, 03:40 UTC1h 10m
2026-05-30 LYM5930 CDR → DEN May 30, 00:40 UTCMay 30, 01:35 UTC55m
2026-05-29 LYM5920 DEN → CDR May 29, 20:45 UTCMay 29, 21:25 UTC40m
2026-05-29 LYM4212 AIA → DEN May 29, 19:05 UTCMay 29, 19:40 UTC35m
2026-05-29 LYM4210 DEN → AIA May 29, 17:35 UTCMay 29, 18:05 UTC30m
2026-05-29 LYM3104 CEZ → DEN May 29, 13:20 UTCMay 29, 14:20 UTC1h 0m
2026-05-29 LYM3110 CEZ → DEN May 29, 00:40 UTCMay 29, 01:50 UTC1h 10m
2026-05-28 LYM3105 CEZ → DEN May 28, 22:15 UTCMay 28, 23:30 UTC1h 15m
2026-05-28 LYM3103 PHX → CEZ May 28, 20:15 UTCMay 28, 21:25 UTC1h 10m
2026-05-28 LYM3101 CEZ → PHX May 28, 17:55 UTCMay 28, 19:20 UTC1h 25m
2026-05-28 LYM3102 DEN → CEZ May 28, 15:45 UTCMay 28, 16:55 UTC1h 10m
2026-05-28 LYM4235 AIA → DEN May 28, 13:40 UTCMay 28, 14:25 UTC45m
2026-05-28 LYM4230 DEN → AIA May 28, 01:10 UTCMay 28, 01:45 UTC35m
2026-05-25 LYM3105 CEZ → DEN May 25, 22:19 UTCMay 25, 23:30 UTC1h 10m
2026-05-25 LYM3103 PHX → CEZ May 25, 20:19 UTCMay 25, 21:45 UTC1h 25m
2026-05-25 LYM3101 CEZ → PHX May 25, 17:55 UTCMay 25, 19:10 UTC1h 15m
2026-05-25 LYM3102 DEN → CEZ May 25, 16:15 UTCMay 25, 17:20 UTC1h 5m
2026-05-24 LYM3105 CEZ → DEN May 24, 23:00 UTCMay 24, 23:25 UTC25m
2026-05-24 LYM3103 PHX → CEZ May 24, 20:10 UTCMay 24, 21:25 UTC1h 15m
2026-05-24 LYM3101 CEZ → PHX May 24, 17:50 UTCMay 24, 19:10 UTC1h 20m
2026-05-24 LYM3102 DEN → CEZ May 24, 16:05 UTCMay 24, 17:15 UTC1h 10m
2026-05-24 LYM4235 AIA → DEN May 24, 13:40 UTCMay 24, 14:20 UTC40m
2026-05-24 LYM4230 DEN → AIA May 24, 01:05 UTCMay 24, 01:35 UTC30m
2026-05-23 LYM5930 CDR → DEN May 23, 22:10 UTCMay 23, 22:50 UTC40m
2026-05-23 LYM5920 DEN → CDR May 23, 20:25 UTCMay 23, 21:00 UTC35m
2026-05-23 LYM5910 CDR → DEN May 23, 13:20 UTCMay 23, 14:05 UTC45m
2026-05-23 LYM5940 DEN → CDR May 23, 01:30 UTCMay 23, 02:05 UTC35m
2026-05-22 LYM4144 MCK → DEN May 22, 23:45 UTCMay 23, 00:20 UTC35m
2026-05-22 LYM4133 DEN → MCK May 22, 21:55 UTCMay 22, 22:25 UTC30m
2026-05-22 LYM4212 AIA → DEN May 22, 19:20 UTCMay 22, 20:00 UTC40m
2026-05-22 LYM4210 DEN → AIA May 22, 18:05 UTCMay 22, 18:30 UTC25m
2026-05-22 LYM3104 CEZ → DEN May 22, 13:15 UTCMay 22, 14:20 UTC1h 5m
2026-05-22 LYM3110 CEZ → DEN May 22, 01:40 UTCMay 22, 02:50 UTC1h 10m
2026-05-21 LYM5930 CDR → DEN May 21, 23:25 UTCMay 22, 00:30 UTC1h 5m
2026-05-21 LYM5920 DEN → CDR May 21, 20:40 UTCMay 21, 21:20 UTC40m
2026-05-19 LYM3104 CEZ → DEN May 19, 13:25 UTCMay 19, 14:20 UTC55m
2026-05-19 LYM3110 CEZ → DEN May 19, 00:50 UTCMay 19, 02:05 UTC1h 15m
2026-05-18 LYM5930 CDR → DEN May 18, 22:40 UTCMay 18, 23:30 UTC50m
2026-05-18 LYM5920 DEN → CDR May 18, 20:55 UTCMay 18, 21:25 UTC30m
2026-05-18 LYM820 MTJ → DEN May 18, 00:35 UTCMay 18, 01:30 UTC55m
2026-05-17 LYM820 MTJ → DEN May 17, 23:50 UTCMay 18, 00:05 UTC15m
2026-05-17 LYM3106 DEN → CEZ May 17, 17:30 UTCMay 17, 18:45 UTC1h 15m
2026-05-17 LYM5910 CDR → DEN May 17, 13:25 UTCMay 17, 14:10 UTC45m
2026-05-17 LYM5940 DEN → CDR May 17, 01:40 UTCMay 17, 02:15 UTC35m
2026-05-16 LYM4212 AIA → DEN May 16, 19:05 UTCMay 16, 19:50 UTC45m
2026-05-16 LYM4210 DEN → AIA May 16, 17:40 UTCMay 16, 18:10 UTC30m
2026-05-16 LYM3104 CEZ → DEN May 16, 13:15 UTCMay 16, 14:11 UTC55m
2026-05-16 LYM3110 CEZ → DEN May 16, 01:00 UTCMay 16, 02:05 UTC1h 5m
2026-05-15 LYM4144 MCK → DEN May 15, 23:40 UTCMay 16, 00:15 UTC35m
2026-05-15 LYM4133 DEN → MCK May 15, 22:00 UTCMay 15, 22:25 UTC25m

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 N882DC page for operator, model, and routing details .

Mode-S AC2591 frequently asked

What is Mode-S code AC2591?
AC2591 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N882DC.
Where is Mode-S AC2591 registered?
Mode-S code AC2591 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 AC2591 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC2591, octal 53022621, decimal 11,281,809.
What flights does AC2591 operate?
Mode-S AC2591 has broadcast 20 distinct callsigns, including LYM5930, LYM5920, LYM4212, LYM4210, LYM3110.