Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A27949

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N259DS · DORNIER 328 · operated by CBG LLC

Hex
A27949
Octal
50474511
Decimal
10,647,881
Country
US
Tail
N259DS
Type
D328
No current signal · last broadcast 6d ago
Flights observed
79
Distinct callsigns
15
Country
US
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S A27949.

Country allocation

The ICAO 24-bit address A27949 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 15 distinct

Callsign Airline Flights Last seen
LYM4801 - 15 2026-07-14
LYM4804 - 14 2026-07-14
LYM3714 - 11 2026-07-14
LYM3712 - 11 2026-07-14
LYM3710 - 4 2026-07-12
LYM3700 - 4 2026-07-12
LYM5414 - 3 2026-06-20
LYM5411 - 3 2026-06-20
LYM5407 - 3 2026-06-20
LYM5418 - 2 2026-06-19
LYM4803 - 2 2026-07-11
LYM4802 - 2 2026-07-11
LYM3585 - 2 2026-06-19
LYM3583 - 2 2026-06-19
LYM3581 Key Lime Air 1 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LYM3714 - Jul 14, 19:00 UTCJul 14, 19:45 UTC45m
2026-07-14 LYM3712 - Jul 14, 17:40 UTCJul 14, 18:15 UTC35m
2026-07-14 LYM4801 - Jul 14, 14:00 UTCJul 14, 14:35 UTC35m
2026-07-14 LYM4804 - Jul 14, 00:05 UTCJul 14, 00:25 UTC20m
2026-07-13 LYM3714 - Jul 13, 18:50 UTCJul 13, 19:40 UTC50m
2026-07-13 LYM3712 - Jul 13, 17:30 UTCJul 13, 18:05 UTC35m
2026-07-13 LYM4801 - Jul 13, 14:15 UTCJul 13, 14:45 UTC30m
2026-07-12 LYM4804 - Jul 12, 23:55 UTCJul 13, 00:15 UTC20m
2026-07-12 LYM3714 - Jul 12, 21:35 UTCJul 12, 22:20 UTC45m
2026-07-12 LYM3710 - Jul 12, 19:30 UTCJul 12, 20:35 UTC1h 5m
2026-07-12 LYM3700 - Jul 12, 17:25 UTCJul 12, 18:30 UTC1h 5m
2026-07-12 LYM3712 - Jul 12, 16:05 UTCJul 12, 16:35 UTC30m
2026-07-12 LYM4801 - Jul 12, 13:35 UTCJul 12, 14:05 UTC30m
2026-07-11 LYM4804 DEN → PUB Jul 11, 23:40 UTCJul 12, 00:01 UTC20m
2026-07-11 LYM4803 PUB → DEN Jul 11, 21:40 UTCJul 11, 22:15 UTC35m
2026-07-11 LYM4802 DEN → PUB Jul 11, 20:30 UTCJul 11, 20:50 UTC20m
2026-07-11 LYM3714 - Jul 11, 19:05 UTCJul 11, 19:50 UTC45m
2026-07-11 LYM3712 - Jul 11, 17:35 UTCJul 11, 18:10 UTC35m
2026-07-11 LYM4801 PUB → DEN Jul 11, 13:35 UTCJul 11, 14:15 UTC40m
2026-07-11 LYM4804 DEN → PUB Jul 11, 00:25 UTCJul 11, 00:45 UTC20m
2026-07-10 LYM3714 - Jul 10, 19:00 UTCJul 10, 19:40 UTC40m
2026-07-10 LYM3712 - Jul 10, 17:40 UTCJul 10, 18:15 UTC35m
2026-07-10 LYM4801 - Jul 10, 13:50 UTCJul 10, 14:25 UTC35m
2026-07-10 LYM4804 DEN → PUB Jul 10, 00:35 UTCJul 10, 00:55 UTC20m
2026-07-09 LYM3714 - Jul 9, 23:05 UTCJul 9, 23:40 UTC35m
2026-07-09 LYM3710 - Jul 9, 19:35 UTCJul 9, 20:35 UTC1h 0m
2026-07-09 LYM3700 - Jul 9, 17:20 UTCJul 9, 18:30 UTC1h 10m
2026-07-09 LYM3712 DEN → TEX Jul 9, 15:55 UTCJul 9, 16:35 UTC40m
2026-07-09 LYM4801 PUB → DEN Jul 9, 13:50 UTCJul 9, 14:25 UTC35m
2026-07-09 LYM4804 DEN → PUB Jul 9, 00:35 UTCJul 9, 01:00 UTC25m
2026-07-08 LYM3714 - Jul 8, 18:55 UTCJul 8, 19:40 UTC45m
2026-07-08 LYM3712 - Jul 8, 17:40 UTCJul 8, 18:20 UTC40m
2026-06-27 LYM4801 - Jun 27, 18:15 UTCJun 27, 18:45 UTC30m
2026-06-26 LYM4802 DEN → PUB Jun 26, 21:10 UTCJun 26, 21:39 UTC30m
2026-06-22 LYM3714 - Jun 22, 19:19 UTCJun 22, 20:00 UTC40m
2026-06-22 LYM3712 - Jun 22, 18:00 UTCJun 22, 18:40 UTC40m
2026-06-22 LYM4801 PUB → DEN Jun 22, 13:59 UTCJun 22, 14:29 UTC30m
2026-06-22 LYM4804 DEN → PUB Jun 22, 00:29 UTCJun 22, 00:50 UTC20m
2026-06-21 LYM3714 - Jun 21, 21:49 UTCJun 21, 22:40 UTC50m
2026-06-21 LYM3710 - Jun 21, 19:50 UTCJun 21, 20:50 UTC1h 0m
2026-06-21 LYM3700 - Jun 21, 17:39 UTCJun 21, 18:54 UTC1h 15m
2026-06-21 LYM3712 - Jun 21, 16:25 UTCJun 21, 17:05 UTC40m
2026-06-20 LYM4803 DEN → DEN Jun 20, 21:14 UTCJun 20, 22:45 UTC1h 30m
2026-06-20 LYM5414 - Jun 20, 18:34 UTCJun 20, 19:40 UTC1h 5m
2026-06-20 LYM5411 - Jun 20, 16:34 UTCJun 20, 17:29 UTC55m
2026-06-20 LYM5407 - Jun 20, 14:35 UTCJun 20, 15:34 UTC1h 0m
2026-06-19 LYM5418 - Jun 19, 23:00 UTCJun 19, 23:49 UTC50m
2026-06-19 LYM3585 - Jun 19, 20:19 UTCJun 19, 20:49 UTC30m
2026-06-19 LYM3583 - Jun 19, 18:59 UTCJun 19, 19:25 UTC25m
2026-06-19 LYM4801 PUB → DEN Jun 19, 13:54 UTCJun 19, 14:29 UTC35m

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 N259DS page for operator, model, and routing details .

Mode-S A27949 frequently asked

What is Mode-S code A27949?
A27949 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N259DS.
Where is Mode-S A27949 registered?
Mode-S code A27949 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 A27949 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27949, octal 50474511, decimal 10,647,881.
What flights does A27949 operate?
Mode-S A27949 has broadcast 15 distinct callsigns, including LYM4801, LYM4804, LYM3714, LYM3712, LYM3710.