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 7h ago
Flights observed
151
Distinct callsigns
20
Country
US
Last broadcast
7h ago

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 12 2026-05-26
LYM3583 Key Lime Air 12 2026-05-26
LYM5414 Key Lime Air 10 2026-05-25
LYM5407 Key Lime Air 10 2026-05-25
LYM978 Key Lime Air 9 2026-05-06
LYM5418 Key Lime Air 9 2026-05-24
LYM5411 Key Lime Air 9 2026-05-25
LYM4803 Key Lime Air 8 2026-05-30
LYM4802 Key Lime Air 8 2026-05-29
LYM610 Key Lime Air 7 2026-05-18
LYM3587 Key Lime Air 6 2026-05-30
LYM3581 Key Lime Air 6 2026-05-26
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
LYM5882 Key Lime Air 3 2026-04-18
LYM5112 Key Lime Air 2 2026-04-16
LYM288 - 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 LYM3587 DEN → ALS May 30, 01:10 UTCMay 30, 01:35 UTC25m
2026-05-30 LYM4803 PUB → DEN May 30, 00:05 UTCMay 30, 00:35 UTC30m
2026-05-29 LYM4802 DEN → PUB May 29, 21:15 UTCMay 29, 21:40 UTC25m
2026-05-26 LYM3585 ALS → DEN May 26, 20:09 UTCMay 26, 20:40 UTC30m
2026-05-26 LYM3583 DEN → ALS May 26, 18:50 UTCMay 26, 19:15 UTC25m
2026-05-26 LYM3581 ALS → DEN May 26, 14:20 UTCMay 26, 14:50 UTC30m
2026-05-25 LYM3587 DEN → ALS May 25, 23:54 UTCMay 26, 00:19 UTC25m
2026-05-25 LYM5414 CVN → DEN May 25, 18:25 UTCMay 25, 19:25 UTC1h 0m
2026-05-25 LYM5411 DFW → CVN May 25, 16:30 UTCMay 25, 17:20 UTC50m
2026-05-25 LYM5407 CVN → DFW May 25, 14:40 UTCMay 25, 15:35 UTC55m
2026-05-24 LYM5418 DEN → CVN May 24, 23:10 UTCMay 24, 23:46 UTC36m
2026-05-24 LYM3585 ALS → DEN May 24, 20:15 UTCMay 24, 20:45 UTC30m
2026-05-24 LYM3583 DEN → ALS May 24, 18:50 UTCMay 24, 19:15 UTC25m
2026-05-23 LYM4803 PUB → DEN May 23, 22:10 UTCMay 23, 22:35 UTC25m
2026-05-23 LYM4802 DEN → PUB May 23, 20:40 UTCMay 23, 21:05 UTC25m
2026-05-23 LYM5414 CVN → DEN May 23, 18:25 UTCMay 23, 19:20 UTC55m
2026-05-23 LYM5411 DFW → CVN May 23, 16:35 UTCMay 23, 17:20 UTC45m
2026-05-23 LYM5407 CVN → DFW May 23, 14:35 UTCMay 23, 15:30 UTC55m
2026-05-22 LYM5418 DEN → CVN May 22, 23:10 UTCMay 23, 00:00 UTC50m
2026-05-22 LYM3585 ALS → DEN May 22, 20:05 UTCMay 22, 20:35 UTC30m
2026-05-22 LYM3583 DEN → ALS May 22, 18:45 UTCMay 22, 19:10 UTC25m
2026-05-22 LYM3581 ALS → DEN May 22, 14:10 UTCMay 22, 14:40 UTC30m
2026-05-22 LYM3587 DEN → ALS May 22, 00:10 UTCMay 22, 00:35 UTC25m
2026-05-21 LYM4803 PUB → DEN May 21, 22:20 UTCMay 21, 23:05 UTC45m
2026-05-21 LYM4802 DEN → PUB May 21, 20:40 UTCMay 21, 21:05 UTC25m
2026-05-21 LYM5414 CVN → DEN May 21, 18:25 UTCMay 21, 19:20 UTC55m
2026-05-21 LYM5411 DFW → CVN May 21, 16:30 UTCMay 21, 17:20 UTC50m
2026-05-21 LYM5407 CVN → DFW May 21, 14:45 UTCMay 21, 15:35 UTC50m
2026-05-20 LYM5418 DEN → CVN May 20, 23:15 UTCMay 21, 00:00 UTC45m
2026-05-20 LYM3585 ALS → DEN May 20, 20:20 UTCMay 20, 20:50 UTC30m
2026-05-20 LYM3583 DEN → ALS May 20, 18:55 UTCMay 20, 19:20 UTC25m
2026-05-19 LYM4803 PUB → DEN May 19, 22:40 UTCMay 19, 23:05 UTC25m
2026-05-19 LYM4802 DEN → PUB May 19, 21:45 UTCMay 19, 22:05 UTC20m
2026-05-18 LYM610 SJC → GEG May 18, 23:00 UTCMay 19, 01:50 UTC2h 50m
2026-05-18 LYM610 SJC → GEG May 18, 20:45 UTCMay 18, 21:55 UTC1h 10m
2026-05-18 LYM610 SJC → GEG May 18, 16:55 UTCMay 18, 19:50 UTC2h 54m
2026-05-17 LYM610 SJC → GEG May 17, 21:15 UTCMay 17, 23:40 UTC2h 25m
2026-05-17 LYM864 LNK → DEN May 17, 04:10 UTCMay 17, 05:20 UTC1h 10m
2026-05-17 LYM864 LNK → DEN May 17, 02:15 UTCMay 17, 03:15 UTC1h 0m
2026-05-17 LYM864 LNK → DEN May 17, 00:50 UTCMay 17, 01:55 UTC1h 5m
2026-05-16 LYM864 LNK → DEN May 16, 22:00 UTCMay 16, 23:05 UTC1h 5m
2026-05-16 LYM3581 ALS → DEN May 16, 14:20 UTCMay 16, 14:41 UTC20m
2026-05-15 LYM3587 DEN → ALS May 15, 23:45 UTCMay 16, 00:05 UTC20m
2026-05-15 LYM4803 PUB → DEN May 15, 21:40 UTCMay 15, 22:25 UTC45m
2026-05-15 LYM4802 DEN → PUB May 15, 20:40 UTCMay 15, 21:05 UTC25m
2026-05-15 LYM5414 CVN → DEN May 15, 18:25 UTCMay 15, 19:25 UTC1h 0m
2026-05-15 LYM5411 DFW → CVN May 15, 16:35 UTCMay 15, 17:25 UTC50m
2026-05-15 LYM5407 CVN → DFW May 15, 14:30 UTCMay 15, 15:25 UTC54m
2026-05-14 LYM5418 DEN → CVN May 14, 23:15 UTCMay 15, 00:05 UTC50m
2026-05-14 LYM3585 ALS → DEN May 14, 20:10 UTCMay 14, 20:35 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 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 7h ago.
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, LYM5407, LYM978.