Apparatus

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sensors Mode-S transponder

ADC65E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N987NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
ADC65E
Octal
53343136
Decimal
11,388,510
Country
US
Tail
N987NN
Type
B738
No current signal · last broadcast Jul 26, 00:00 UTC
Flights observed
557
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 00:00 UTC

Last known position

Most recent position reported by Mode-S ADC65E.

Country allocation

The ICAO 24-bit address ADC65E 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
AAL2851 American Airlines 8 2026-05-07
AAL1989 - 8 2026-07-12
AAL3329 American Airlines 6 2026-05-30
AAL2718 - 6 2026-07-15
AAL2318 American Airlines 5 2026-07-25
AAL1897 - 5 2026-07-17
AAL1523 - 5 2026-07-17
AAL994 American Airlines 4 2026-07-21
AAL3115 American Airlines 4 2026-04-28
AAL3106 American Airlines 4 2026-04-26
AAL2627 American Airlines 4 2026-05-25
AAL2454 American Airlines 4 2026-04-18
AAL2401 American Airlines 4 2026-07-24
AAL2307 American Airlines 4 2026-06-01
AAL1925 American Airlines 4 2026-04-15
AAL1916 American Airlines 4 2026-07-20
AAL1859 American Airlines 4 2026-04-14
AAL1702 - 4 2026-07-07
AAL1346 - 4 2026-07-12
AAL898 - 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AAL2318 IND → PHX Jul 25, 22:15 UTCJul 26, 00:00 UTC1h 45m
2026-07-25 AAL2318 IND → PHX Jul 25, 22:14 UTCJul 25, 23:59 UTC1h 45m
2026-07-25 AAL2318 IND → PHX Jul 25, 17:50 UTCJul 25, 19:20 UTC1h 30m
2026-07-25 AAL1548 PHX → BOS Jul 25, 14:30 UTCJul 25, 16:20 UTC1h 50m
2026-07-25 AAL1548 PHX → BOS Jul 25, 11:35 UTCJul 25, 13:15 UTC1h 40m
2026-07-25 AAL1903 CLT → MCI Jul 25, 09:15 UTCJul 25, 09:55 UTC40m
2026-07-25 AAL1286 DCA → BDL Jul 25, 02:55 UTCJul 25, 04:35 UTC1h 40m
2026-07-25 AAL1286 DCA → BDL Jul 25, 02:50 UTCJul 25, 04:32 UTC1h 42m
2026-07-24 AAL1400 MCO → CLT Jul 24, 19:50 UTCJul 25, 00:45 UTC4h 55m
2026-07-24 AAL3302 MCO → LGA Jul 24, 16:00 UTCJul 24, 18:20 UTC2h 20m
2026-07-24 AAL1806 TPA → PHL Jul 24, 10:00 UTCJul 24, 12:10 UTC2h 10m
2026-07-24 AAL2401 DFW → TPA Jul 24, 00:50 UTCJul 24, 02:55 UTC2h 5m
2026-07-24 AAL2401 DFW → TPA Jul 24, 00:46 UTCJul 24, 02:55 UTC2h 9m
2026-07-23 AAL2144 BOS → DCA Jul 23, 16:10 UTCJul 23, 23:15 UTC7h 5m
2026-07-23 AAL533 AUS → LAX Jul 23, 11:35 UTCJul 23, 14:30 UTC2h 55m
2026-07-23 AAL421 DFW → SYR Jul 23, 01:30 UTCJul 23, 04:00 UTC2h 30m
2026-07-22 AAL1522 JAX → CLT Jul 22, 22:25 UTCJul 23, 00:00 UTC1h 35m
2026-07-22 AAL1522 JAX → CLT Jul 22, 19:15 UTCJul 22, 20:40 UTC1h 25m
2026-07-22 AAL1975 BDL → CLT Jul 22, 15:40 UTCJul 22, 17:40 UTC2h 0m
2026-07-22 AAL1975 BDL → CLT Jul 22, 12:30 UTCJul 22, 14:25 UTC1h 55m
2026-07-22 AAL1904 CLT → RDU Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-21 AAL1904 CLT → RDU Jul 21, 23:45 UTCJul 22, 02:15 UTC2h 30m
2026-07-21 AAL1680 DFW → CAE Jul 21, 16:20 UTCJul 21, 18:30 UTC2h 10m
2026-07-21 AAL1680 DFW → CAE Jul 21, 12:50 UTCJul 21, 15:00 UTC2h 10m
2026-07-21 AAL994 PHL → CLT Jul 21, 09:50 UTCJul 21, 11:30 UTC1h 40m
2026-07-21 AAL994 PHL → CLT Jul 21, 09:48 UTCJul 21, 11:35 UTC1h 47m
2026-07-21 AAL1081 IAH → DFW Jul 21, 02:35 UTCJul 21, 04:20 UTC1h 45m
2026-07-20 AAL1288 PVR → DFW Jul 20, 22:25 UTCJul 21, 00:45 UTC2h 20m
2026-07-20 AAL1288 PVR → DFW Jul 20, 18:30 UTCJul 20, 21:00 UTC2h 30m
2026-07-20 AAL1916 SJD → DFW Jul 20, 16:20 UTCJul 20, 17:10 UTC50m
2026-07-20 AAL1916 SJD → DFW Jul 20, 14:25 UTCJul 20, 15:05 UTC40m
2026-07-20 AAL2728 EWR → DFW Jul 20, 10:00 UTCJul 20, 13:00 UTC3h 0m
2026-07-20 AAL2794 CLT → EWR Jul 20, 01:05 UTCJul 20, 02:25 UTC1h 20m
2026-07-19 AAL2318 - Jul 19, 21:15 UTCJul 19, 23:10 UTC1h 55m
2026-07-19 AAL2318 - Jul 19, 18:20 UTCJul 19, 19:50 UTC1h 30m
2026-07-19 AAL1204 - Jul 19, 15:40 UTCJul 19, 17:00 UTC1h 20m
2026-07-19 AAL574 DFW → BUF Jul 19, 01:00 UTCJul 19, 03:35 UTC2h 35m
2026-07-19 AAL574 DFW → BUF Jul 19, 00:56 UTCJul 19, 03:36 UTC2h 40m
2026-07-18 AAL2868 DCA → LGA Jul 18, 21:20 UTCJul 18, 23:05 UTC1h 45m
2026-07-18 AAL3151 - Jul 18, 17:45 UTCJul 18, 21:30 UTC3h 45m
2026-07-18 AAL3151 DFW → QRO Jul 18, 17:42 UTCJul 18, 19:34 UTC1h 52m
2026-07-18 AAL2425 - Jul 18, 13:20 UTCJul 18, 15:45 UTC2h 25m
2026-07-18 AAL2709 - Jul 18, 01:25 UTCJul 18, 03:35 UTC2h 11m
2026-07-17 AAL1897 - Jul 17, 21:44 UTCJul 17, 23:55 UTC2h 10m
2026-07-17 AAL1897 GSP → DFW Jul 17, 21:41 UTCJul 17, 23:54 UTC2h 13m
2026-07-17 AAL1897 - Jul 17, 18:40 UTCJul 17, 20:35 UTC1h 55m
2026-07-17 AAL1523 DEN → DFW Jul 17, 15:49 UTCJul 17, 17:20 UTC1h 30m
2026-07-17 AAL1523 DEN → DFW Jul 17, 15:47 UTCJul 17, 17:15 UTC1h 28m
2026-07-17 AAL1523 - Jul 17, 13:00 UTCJul 17, 14:30 UTC1h 30m
2026-07-17 AAL1098 MCI → DFW Jul 17, 10:35 UTCJul 17, 11:45 UTC1h 10m

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 N987NN page for operator, model, and routing details .

Mode-S ADC65E frequently asked

What is Mode-S code ADC65E?
ADC65E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N987NN.
Where is Mode-S ADC65E registered?
Mode-S code ADC65E 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 ADC65E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 00:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADC65E, octal 53343136, decimal 11,388,510.
What flights does ADC65E operate?
Mode-S ADC65E has broadcast 20 distinct callsigns, including AAL2851, AAL1989, AAL3329, AAL2718, AAL2318.