Apparatus

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sensors Mode-S transponder

AD87AA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N971DC · EMBRAER ERJ-145 · operated by CBG LLC

Hex
AD87AA
Octal
53303652
Decimal
11,372,458
Country
US
Tail
N971DC
Type
E145
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
360
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S AD87AA.

Country allocation

The ICAO 24-bit address AD87AA 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
LYM3585 Key Lime Air 32 2026-07-25
LYM3583 Key Lime Air 32 2026-07-25
LYM5414 Key Lime Air 31 2026-07-26
LYM5418 Key Lime Air 30 2026-07-25
LYM5407 Key Lime Air 28 2026-07-26
LYM5411 Key Lime Air 27 2026-07-26
LYM4802 Key Lime Air 25 2026-07-26
LYM4803 Key Lime Air 24 2026-07-24
LYM3581 Key Lime Air 20 2026-07-25
LYM3587 Key Lime Air 19 2026-07-24
LYM978 Key Lime Air 9 2026-05-06
LYM610 Key Lime Air 7 2026-05-18
LYM5882 Key Lime Air 5 2026-06-04
LYM4804 Key Lime Air 5 2026-04-30
LYM4801 Key Lime Air 5 2026-04-30
LYM411 Key Lime Air 5 2026-04-20
LYM864 Key Lime Air 4 2026-05-17
LYM825 Key Lime Air 4 2026-05-04
LYM5775 Key Lime Air 4 2026-06-05
LYM576 - 4 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LYM4802 DEN → PUB Jul 26, 21:25 UTCJul 26, 21:50 UTC25m
2026-07-26 LYM5414 CVN → DEN Jul 26, 18:25 UTCJul 26, 19:10 UTC45m
2026-07-26 LYM5411 DFW → CVN Jul 26, 16:30 UTCJul 26, 17:10 UTC40m
2026-07-26 LYM5407 CVN → DFW Jul 26, 14:30 UTCJul 26, 15:25 UTC55m
2026-07-25 LYM5418 DEN → CVN Jul 25, 23:10 UTCJul 26, 00:05 UTC55m
2026-07-25 LYM3585 ALS → DEN Jul 25, 20:20 UTCJul 25, 21:00 UTC40m
2026-07-25 LYM3583 DEN → ALS Jul 25, 19:05 UTCJul 25, 19:30 UTC25m
2026-07-25 LYM3581 ALS → DEN Jul 25, 14:10 UTCJul 25, 14:40 UTC30m
2026-07-24 LYM3587 DEN → ALS Jul 24, 23:45 UTCJul 25, 00:15 UTC30m
2026-07-24 LYM4803 PUB → DEN Jul 24, 22:00 UTCJul 24, 22:30 UTC30m
2026-07-24 LYM4802 DEN → PUB Jul 24, 20:40 UTCJul 24, 21:00 UTC20m
2026-07-24 LYM5414 CVN → DEN Jul 24, 18:35 UTCJul 24, 19:35 UTC1h 0m
2026-07-24 LYM5411 DFW → CVN Jul 24, 16:45 UTCJul 24, 17:35 UTC50m
2026-07-24 LYM5407 CVN → DFW Jul 24, 14:40 UTCJul 24, 15:35 UTC55m
2026-07-23 LYM5418 DEN → CVN Jul 23, 23:15 UTCJul 23, 23:55 UTC40m
2026-07-21 LYM3585 ALS → DEN Jul 21, 20:20 UTCJul 21, 20:50 UTC30m
2026-07-21 LYM3583 DEN → ALS Jul 21, 18:55 UTCJul 21, 19:20 UTC25m
2026-07-21 LYM3581 - Jul 21, 14:20 UTCJul 21, 14:50 UTC30m
2026-07-20 LYM3587 DEN → ALS Jul 20, 23:45 UTCJul 21, 00:10 UTC25m
2026-07-20 LYM5414 CVN → DEN Jul 20, 18:20 UTCJul 20, 19:20 UTC1h 0m
2026-07-20 LYM5411 DFW → CVN Jul 20, 16:35 UTCJul 20, 17:25 UTC50m
2026-07-20 LYM5407 CVN → DFW Jul 20, 14:45 UTCJul 20, 15:40 UTC55m
2026-07-19 LYM5418 - Jul 19, 23:45 UTCJul 20, 00:35 UTC50m
2026-07-19 LYM3585 ALS → DEN Jul 19, 21:55 UTCJul 19, 22:25 UTC30m
2026-07-19 LYM3583 DEN → ALS Jul 19, 20:35 UTCJul 19, 20:55 UTC20m
2026-07-19 LYM5414 CVN → DEN Jul 19, 18:25 UTCJul 19, 19:25 UTC1h 0m
2026-07-19 LYM5411 DFW → CVN Jul 19, 16:45 UTCJul 19, 17:35 UTC50m
2026-07-19 LYM5407 CVN → DFW Jul 19, 14:45 UTCJul 19, 15:45 UTC1h 0m
2026-07-18 LYM5418 - Jul 18, 23:30 UTCJul 19, 00:25 UTC55m
2026-07-18 LYM3585 ALS → DEN Jul 18, 20:25 UTCJul 18, 20:55 UTC30m
2026-07-18 LYM3583 DEN → ALS Jul 18, 18:50 UTCJul 18, 19:15 UTC25m
2026-07-18 LYM3581 - Jul 18, 14:30 UTCJul 18, 15:05 UTC35m
2026-07-17 LYM3587 - Jul 17, 23:55 UTCJul 18, 00:19 UTC25m
2026-07-17 LYM3585 ALS → DEN Jul 17, 20:25 UTCJul 17, 21:05 UTC40m
2026-07-17 LYM3583 DEN → ALS Jul 17, 19:09 UTCJul 17, 19:35 UTC25m
2026-07-17 LYM3581 - Jul 17, 14:10 UTCJul 17, 14:44 UTC35m
2026-07-16 LYM3587 - Jul 16, 23:25 UTCJul 16, 23:49 UTC25m
2026-07-16 LYM4803 - Jul 16, 21:55 UTCJul 16, 22:25 UTC30m
2026-07-16 LYM4802 DEN → PUB Jul 16, 20:45 UTCJul 16, 21:10 UTC25m
2026-07-16 LYM5414 - Jul 16, 18:25 UTCJul 16, 19:25 UTC1h 0m
2026-07-16 LYM5411 - Jul 16, 16:35 UTCJul 16, 17:30 UTC55m
2026-07-16 LYM5407 - Jul 16, 14:29 UTCJul 16, 15:25 UTC55m
2026-07-15 LYM5418 - Jul 15, 23:00 UTCJul 15, 23:45 UTC45m
2026-07-15 LYM3585 - Jul 15, 20:25 UTCJul 15, 21:05 UTC40m
2026-07-15 LYM3583 - Jul 15, 18:50 UTCJul 15, 19:15 UTC25m
2026-07-14 LYM4803 - Jul 14, 21:50 UTCJul 14, 22:20 UTC30m
2026-07-14 LYM4802 DEN → PUB Jul 14, 20:35 UTCJul 14, 21:00 UTC25m
2026-07-14 LYM5414 - Jul 14, 18:20 UTCJul 14, 19:15 UTC55m
2026-07-14 LYM5411 - Jul 14, 16:20 UTCJul 14, 17:10 UTC50m
2026-07-14 LYM5407 - Jul 14, 14:30 UTCJul 14, 15:25 UTC55m

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 N971DC page for operator, model, and routing details .

Mode-S AD87AA frequently asked

What is Mode-S code AD87AA?
AD87AA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N971DC.
Where is Mode-S AD87AA registered?
Mode-S code AD87AA 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 AD87AA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD87AA, octal 53303652, decimal 11,372,458.
What flights does AD87AA operate?
Mode-S AD87AA has broadcast 20 distinct callsigns, including LYM3585, LYM3583, LYM5414, LYM5418, LYM5407.