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sensors Mode-S transponder

AD9DF4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N977DC · EMBRAER ERJ-145 · operated by CBG LLC

Hex
AD9DF4
Octal
53316764
Decimal
11,378,164
Country
US
Tail
N977DC
Type
E145
No current signal · last broadcast 11h ago
Flights observed
240
Distinct callsigns
20
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S AD9DF4.

Country allocation

The ICAO 24-bit address AD9DF4 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
LYM500 - 82 2026-05-31
LYM5880 - 17 2026-07-12
LYM5870 - 17 2026-07-12
LYM5730 - 17 2026-07-13
LYM5882 - 16 2026-07-13
LYM5872 - 16 2026-07-12
LYM5745 - 15 2026-07-12
LYM5775 - 13 2026-07-12
LYM5760 - 12 2026-07-12
LYM3914 - 12 2026-07-13
LYM3912 - 11 2026-07-13
LYM5899 Key Lime Air 2 2026-06-26
LYM5799 - 2 2026-07-04
LYM173 Key Lime Air 2 2026-06-02
LYM733 Key Lime Air 1 2026-06-05
LYM610 Key Lime Air 1 2026-05-03
LYM5798 - 1 2026-07-04
LYM411 Key Lime Air 1 2026-04-23
LYM373 Key Lime Air 1 2026-05-31
LYM288 Key Lime Air 1 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LYM5882 - Jul 13, 21:55 UTCJul 13, 22:55 UTC1h 0m
2026-07-13 LYM3914 - Jul 13, 20:00 UTCJul 13, 21:00 UTC1h 0m
2026-07-13 LYM3912 - Jul 13, 18:35 UTCJul 13, 19:15 UTC40m
2026-07-13 LYM5730 - Jul 13, 12:30 UTCJul 13, 12:55 UTC25m
2026-07-12 LYM5775 - Jul 12, 23:35 UTCJul 13, 00:01 UTC25m
2026-07-12 LYM5760 - Jul 12, 21:25 UTCJul 12, 22:00 UTC35m
2026-07-12 LYM5745 - Jul 12, 19:35 UTCJul 12, 20:05 UTC30m
2026-07-12 LYM5880 - Jul 12, 17:15 UTCJul 12, 18:30 UTC1h 15m
2026-07-12 LYM5872 - Jul 12, 15:50 UTCJul 12, 16:30 UTC40m
2026-07-12 LYM5870 - Jul 12, 13:05 UTCJul 12, 13:50 UTC45m
2026-07-11 LYM5882 - Jul 11, 22:10 UTCJul 11, 23:10 UTC1h 0m
2026-07-11 LYM5730 - Jul 11, 12:45 UTCJul 11, 13:35 UTC50m
2026-07-10 LYM5775 ORD → MKG Jul 10, 23:20 UTCJul 10, 23:50 UTC30m
2026-07-10 LYM5760 - Jul 10, 21:35 UTCJul 10, 22:00 UTC25m
2026-07-10 LYM5745 - Jul 10, 19:55 UTCJul 10, 20:20 UTC25m
2026-07-10 LYM5880 - Jul 10, 17:00 UTCJul 10, 18:35 UTC1h 35m
2026-07-10 LYM5872 - Jul 10, 15:10 UTCJul 10, 15:50 UTC40m
2026-07-10 LYM5870 - Jul 10, 13:15 UTCJul 10, 14:00 UTC45m
2026-07-09 LYM5882 - Jul 9, 22:55 UTCJul 9, 23:55 UTC1h 0m
2026-07-09 LYM3914 - Jul 9, 20:20 UTCJul 9, 21:15 UTC55m
2026-07-09 LYM3912 - Jul 9, 18:30 UTCJul 9, 19:15 UTC45m
2026-07-09 LYM5730 - Jul 9, 12:50 UTCJul 9, 13:20 UTC30m
2026-07-09 LYM5775 ORD → MKG Jul 9, 01:10 UTCJul 9, 01:35 UTC25m
2026-07-08 LYM5760 - Jul 8, 21:30 UTCJul 8, 22:15 UTC45m
2026-07-08 LYM5745 - Jul 8, 19:40 UTCJul 8, 20:05 UTC25m
2026-07-07 LYM5880 - Jul 7, 16:40 UTCJul 7, 17:50 UTC1h 10m
2026-07-07 LYM5872 ATL → MKL Jul 7, 15:05 UTCJul 7, 15:40 UTC35m
2026-07-07 LYM5870 - Jul 7, 13:10 UTCJul 7, 13:55 UTC45m
2026-07-06 LYM5882 - Jul 6, 22:20 UTCJul 6, 23:20 UTC1h 0m
2026-07-06 LYM3914 - Jul 6, 20:15 UTCJul 6, 21:10 UTC55m
2026-07-06 LYM3912 - Jul 6, 18:20 UTCJul 6, 19:00 UTC40m
2026-07-06 LYM5730 - Jul 6, 12:30 UTCJul 6, 13:15 UTC45m
2026-07-05 LYM5775 - Jul 5, 23:25 UTCJul 5, 23:50 UTC25m
2026-07-05 LYM5760 - Jul 5, 21:30 UTCJul 5, 22:00 UTC30m
2026-07-05 LYM5745 - Jul 5, 19:50 UTCJul 5, 20:15 UTC25m
2026-07-05 LYM5880 - Jul 5, 17:05 UTCJul 5, 18:35 UTC1h 30m
2026-07-05 LYM5872 ATL → MKL Jul 5, 15:25 UTCJul 5, 16:05 UTC40m
2026-07-05 LYM5870 - Jul 5, 13:20 UTCJul 5, 14:10 UTC50m
2026-07-05 LYM5882 - Jul 5, 00:55 UTCJul 5, 02:00 UTC1h 5m
2026-07-04 LYM5798 - Jul 4, 15:25 UTCJul 4, 15:50 UTC25m
2026-07-04 LYM5799 - Jul 4, 14:25 UTCJul 4, 14:55 UTC30m
2026-07-04 LYM5730 - Jul 4, 12:30 UTCJul 4, 12:55 UTC25m
2026-07-03 LYM5745 ORD → MKG Jul 3, 22:20 UTCJul 3, 22:45 UTC25m
2026-07-03 LYM5880 - Jul 3, 20:30 UTCJul 3, 20:50 UTC20m
2026-07-03 LYM5880 - Jul 3, 16:35 UTCJul 3, 18:15 UTC1h 40m
2026-07-03 LYM5872 ATL → MKL Jul 3, 15:05 UTCJul 3, 15:50 UTC45m
2026-07-03 LYM5870 - Jul 3, 13:15 UTCJul 3, 14:00 UTC45m
2026-07-02 LYM5882 - Jul 2, 22:40 UTCJul 2, 23:45 UTC1h 5m
2026-07-02 LYM3914 - Jul 2, 20:30 UTCJul 2, 21:40 UTC1h 10m
2026-07-02 LYM3912 - Jul 2, 18:45 UTCJul 2, 19:35 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.

Prefer a tail-number view? See the N977DC page for operator, model, and routing details .

Mode-S AD9DF4 frequently asked

What is Mode-S code AD9DF4?
AD9DF4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N977DC.
Where is Mode-S AD9DF4 registered?
Mode-S code AD9DF4 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 AD9DF4 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD9DF4, octal 53316764, decimal 11,378,164.
What flights does AD9DF4 operate?
Mode-S AD9DF4 has broadcast 20 distinct callsigns, including LYM500, LYM5880, LYM5870, LYM5730, LYM5882.