Apparatus

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sensors Mode-S transponder

AC0DD9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N876NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AC0DD9
Octal
53006731
Decimal
11,275,737
Country
US
Tail
N876NN
Type
B738
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
439
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AC0DD9.

Country allocation

The ICAO 24-bit address AC0DD9 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
AAL1930 American Airlines 5 2026-04-16
AAL1379 - 5 2026-07-11
AAL627 - 4 2026-07-04
AAL496 American Airlines 4 2026-05-10
AAL2949 American Airlines 4 2026-05-27
AAL2821 - 4 2026-06-29
AAL2561 American Airlines 4 2026-05-23
AAL2519 American Airlines 4 2026-07-21
AAL2433 - 4 2026-07-03
AAL2152 - 4 2026-07-09
AAL2079 - 4 2026-06-28
AAL1013 American Airlines 4 2026-05-10
AAL924 American Airlines 3 2026-05-04
AAL922 - 3 2026-07-16
AAL877 - 3 2026-07-10
AAL850 American Airlines 3 2026-05-06
AAL542 American Airlines 3 2026-05-18
AAL476 American Airlines 3 2026-04-15
AAL3166 American Airlines 3 2026-05-07
AAL3051 American Airlines 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL483 PHX → DFW Jul 26, 20:30 UTCJul 26, 22:15 UTC1h 45m
2026-07-26 AAL483 PHX → DFW Jul 26, 14:55 UTCJul 26, 19:10 UTC4h 15m
2026-07-26 AAL756 PHL → SFO Jul 26, 11:25 UTCJul 26, 13:20 UTC1h 55m
2026-07-26 AAL756 PHL → SFO Jul 26, 11:21 UTCJul 26, 13:20 UTC1h 59m
2026-07-26 AAL775 MIA → BOS Jul 26, 01:35 UTCJul 26, 03:35 UTC2h 0m
2026-07-26 AAL775 MIA → BOS Jul 26, 01:34 UTCJul 26, 03:28 UTC1h 54m
2026-07-25 AAL2217 MIA → AUA Jul 25, 21:30 UTCJul 26, 00:00 UTC2h 30m
2026-07-25 AAL2217 MIA → AUA Jul 25, 17:30 UTCJul 25, 20:10 UTC2h 40m
2026-07-25 AAL1259 BOS → MIA Jul 25, 12:20 UTCJul 25, 15:45 UTC3h 25m
2026-07-24 AAL1048 CLT → LGA Jul 24, 22:10 UTCJul 25, 01:25 UTC3h 15m
2026-07-24 AAL1523 LAS → DFW Jul 24, 19:25 UTCJul 24, 20:55 UTC1h 30m
2026-07-24 AAL1523 LAS → DFW Jul 24, 16:40 UTCJul 24, 18:10 UTC1h 30m
2026-07-24 AAL2868 DCA → LGA Jul 24, 00:47 UTCJul 24, 02:45 UTC1h 58m
2026-07-23 AAL2868 DCA → LGA Jul 23, 21:35 UTCJul 24, 02:50 UTC5h 15m
2026-07-23 AAL1324 DFW → SFO Jul 23, 15:58 UTCJul 23, 18:22 UTC2h 24m
2026-07-23 AAL1324 DFW → SFO Jul 23, 12:20 UTCJul 23, 18:25 UTC6h 5m
2026-07-23 AAL2673 DFW → VPS Jul 23, 02:45 UTCJul 23, 04:15 UTC1h 30m
2026-07-23 AAL2673 DFW → VPS Jul 23, 00:00 UTCJul 23, 01:25 UTC1h 25m
2026-07-22 AAL390 MEX → DFW Jul 22, 18:25 UTCJul 22, 20:30 UTC2h 5m
2026-07-22 AAL389 DFW → MEX Jul 22, 14:30 UTCJul 22, 16:40 UTC2h 10m
2026-07-21 AAL2060 SJU → PHL Jul 21, 21:05 UTCJul 21, 23:55 UTC2h 50m
2026-07-21 AAL1383 MIA → LIR Jul 21, 16:20 UTCJul 21, 18:10 UTC1h 50m
2026-07-21 AAL1383 MIA → LIR Jul 21, 16:19 UTCJul 21, 18:49 UTC2h 30m
2026-07-21 AAL487 BNA → MIA Jul 21, 12:35 UTCJul 21, 14:25 UTC1h 50m
2026-07-21 AAL487 BNA → MIA Jul 21, 12:31 UTCJul 21, 14:20 UTC1h 49m
2026-07-21 AAL1076 BNA → PHL Jul 21, 04:10 UTCJul 21, 05:40 UTC1h 30m
2026-07-21 AAL1076 BNA → PHL Jul 21, 04:09 UTCJul 21, 05:38 UTC1h 29m
2026-07-21 AAL2519 RDU → PHX Jul 21, 01:10 UTCJul 21, 02:45 UTC1h 35m
2026-07-20 AAL2519 RDU → PHX Jul 20, 22:25 UTCJul 21, 00:05 UTC1h 40m
2026-07-20 AAL9602 AFW → DFW Jul 20, 18:20 UTCJul 20, 21:05 UTC2h 45m
2026-07-18 AAL1531 PHL → LAX Jul 18, 18:10 UTCJul 18, 20:45 UTC2h 35m
2026-07-18 AAL1107 DFW → SYR Jul 18, 14:00 UTCJul 18, 16:45 UTC2h 45m
2026-07-17 AAL1531 - Jul 17, 21:00 UTCJul 17, 23:39 UTC2h 40m
2026-07-17 AAL1531 DFW → BOI Jul 17, 20:57 UTCJul 17, 23:39 UTC2h 42m
2026-07-17 AAL2366 - Jul 17, 16:04 UTCJul 17, 18:29 UTC2h 25m
2026-07-17 AAL2366 RDU → DFW Jul 17, 16:01 UTCJul 17, 18:29 UTC2h 28m
2026-07-17 AAL2366 DFW → RDU Jul 17, 12:25 UTCJul 17, 14:55 UTC2h 30m
2026-07-17 AAL320 SJO → DFW Jul 17, 05:50 UTCJul 17, 09:40 UTC3h 50m
2026-07-17 AAL320 SJO → DFW Jul 17, 05:47 UTCJul 17, 09:35 UTC3h 48m
2026-07-17 AAL467 - Jul 17, 01:00 UTCJul 17, 04:14 UTC3h 15m
2026-07-17 AAL467 DFW → SJO Jul 17, 00:55 UTCJul 17, 04:31 UTC3h 36m
2026-07-16 AAL922 - Jul 16, 03:45 UTCJul 16, 04:55 UTC1h 10m
2026-07-16 AAL922 MCI → DFW Jul 16, 03:39 UTCJul 16, 04:52 UTC1h 13m
2026-07-16 AAL922 - Jul 16, 01:15 UTCJul 16, 02:20 UTC1h 5m
2026-07-15 AAL1601 CUN → DFW Jul 15, 16:35 UTCJul 15, 19:09 UTC2h 34m
2026-07-15 AAL1601 - Jul 15, 16:40 UTCJul 15, 19:10 UTC2h 30m
2026-07-15 AAL1343 DFW → CUN Jul 15, 12:45 UTCJul 15, 15:10 UTC2h 25m
2026-07-15 AAL1945 - Jul 15, 00:30 UTCJul 15, 02:15 UTC1h 45m
2026-07-14 AAL1945 DFW → IND Jul 14, 21:30 UTCJul 14, 23:10 UTC1h 39m
2026-07-14 AAL2873 - Jul 14, 18:05 UTCJul 14, 19:45 UTC1h 40m

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 N876NN page for operator, model, and routing details .

Mode-S AC0DD9 frequently asked

What is Mode-S code AC0DD9?
AC0DD9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N876NN.
Where is Mode-S AC0DD9 registered?
Mode-S code AC0DD9 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 AC0DD9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC0DD9, octal 53006731, decimal 11,275,737.
What flights does AC0DD9 operate?
Mode-S AC0DD9 has broadcast 20 distinct callsigns, including AAL1930, AAL1379, AAL627, AAL496, AAL2949.