Apparatus

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sensors Mode-S transponder

AD1C11

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N944AN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AD1C11
Octal
53216021
Decimal
11,344,913
Country
US
Tail
N944AN
Type
B738
No current signal · last broadcast 3h ago
Flights observed
427
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AD1C11.

Country allocation

The ICAO 24-bit address AD1C11 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
AAL2630 - 6 2026-07-02
AAL2523 American Airlines 5 2026-06-07
AAL1944 American Airlines 5 2026-05-28
AAL1713 American Airlines 5 2026-06-09
AAL1593 - 5 2026-07-12
AAL1279 - 5 2026-06-16
AAL525 American Airlines 4 2026-05-18
AAL2725 American Airlines 4 2026-05-01
AAL2446 American Airlines 4 2026-06-09
AAL1551 - 4 2026-07-04
AAL815 - 3 2026-07-14
AAL791 American Airlines 3 2026-04-16
AAL463 - 3 2026-06-23
AAL395 American Airlines 3 2026-05-10
AAL3300 - 3 2026-07-03
AAL3249 American Airlines 3 2026-05-29
AAL314 American Airlines 3 2026-06-08
AAL3063 American Airlines 3 2026-05-22
AAL2933 American Airlines 3 2026-04-14
AAL2904 - 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL815 - Jul 14, 15:30 UTCJul 14, 18:15 UTC2h 45m
2026-07-14 AAL815 BOS → BOS Jul 14, 14:20 UTCJul 14, 14:45 UTC25m
2026-07-14 AAL815 - Jul 14, 11:15 UTCJul 14, 14:15 UTC3h 0m
2026-07-13 AAL2581 - Jul 13, 22:45 UTCJul 13, 23:10 UTC25m
2026-07-13 AAL2581 - Jul 13, 21:05 UTCJul 13, 21:15 UTC10m
2026-07-13 AAL2581 - Jul 13, 17:15 UTCJul 13, 17:35 UTC20m
2026-07-13 AAL902 - Jul 13, 13:20 UTCJul 13, 15:10 UTC1h 50m
2026-07-12 AAL901 MIA → MGA Jul 12, 23:35 UTCJul 13, 01:53 UTC2h 18m
2026-07-12 AAL1600 - Jul 12, 19:05 UTCJul 12, 21:30 UTC2h 25m
2026-07-12 AAL1593 - Jul 12, 15:15 UTCJul 12, 17:35 UTC2h 20m
2026-07-12 AAL1593 MIA → SJO Jul 12, 15:12 UTCJul 12, 17:30 UTC2h 18m
2026-07-12 AAL2696 - Jul 12, 12:40 UTCJul 12, 13:15 UTC35m
2026-07-12 AAL2699 - Jul 12, 10:25 UTCJul 12, 10:55 UTC30m
2026-07-12 AAL2026 JFK → MIA Jul 12, 03:50 UTCJul 12, 06:10 UTC2h 20m
2026-07-11 AAL1202 - Jul 11, 22:40 UTCJul 12, 01:00 UTC2h 20m
2026-07-11 AAL1202 MIA → JFK Jul 11, 22:38 UTCJul 12, 00:58 UTC2h 20m
2026-07-11 AAL1388 - Jul 11, 14:45 UTCJul 11, 18:40 UTC3h 55m
2026-07-11 AAL2308 - Jul 11, 10:15 UTCJul 11, 12:35 UTC2h 20m
2026-07-11 AAL2518 - Jul 11, 01:30 UTCJul 11, 03:40 UTC2h 10m
2026-07-10 AAL1182 - Jul 10, 20:55 UTCJul 10, 23:00 UTC2h 5m
2026-07-10 AAL1182 GUA → MIA Jul 10, 20:51 UTCJul 10, 23:00 UTC2h 9m
2026-07-10 AAL1013 - Jul 10, 19:20 UTCJul 10, 19:35 UTC15m
2026-07-10 AAL1013 - Jul 10, 16:40 UTCJul 10, 17:30 UTC50m
2026-07-10 AAL1567 ATL → DFW Jul 10, 12:50 UTCJul 10, 14:30 UTC1h 40m
2026-07-10 AAL2749 DFW → ATL Jul 10, 03:10 UTCJul 10, 04:50 UTC1h 40m
2026-07-09 AAL2282 - Jul 9, 22:55 UTCJul 10, 01:30 UTC2h 35m
2026-07-09 AAL2282 - Jul 9, 19:20 UTCJul 9, 21:40 UTC2h 20m
2026-07-09 AAL1975 - Jul 9, 15:50 UTCJul 9, 18:10 UTC2h 20m
2026-07-09 AAL1975 JAX → DFW Jul 9, 15:45 UTCJul 9, 17:53 UTC2h 8m
2026-07-09 AAL1975 - Jul 9, 12:40 UTCJul 9, 14:35 UTC1h 55m
2026-07-04 AAL2135 - Jul 4, 17:20 UTCJul 4, 19:20 UTC2h 0m
2026-07-04 AAL2135 - Jul 4, 14:05 UTCJul 4, 16:00 UTC1h 55m
2026-07-04 AAL1884 - Jul 4, 11:00 UTCJul 4, 12:05 UTC1h 5m
2026-07-04 AAL1551 - Jul 4, 02:50 UTCJul 4, 04:45 UTC1h 55m
2026-07-04 AAL1551 MIA → MEM Jul 4, 02:50 UTCJul 4, 04:48 UTC1h 58m
2026-07-03 AAL3300 - Jul 3, 22:05 UTCJul 4, 00:30 UTC2h 25m
2026-07-03 AAL3300 AUA → MIA Jul 3, 22:02 UTCJul 4, 00:35 UTC2h 33m
2026-07-03 AAL3300 - Jul 3, 18:10 UTCJul 3, 20:40 UTC2h 30m
2026-07-03 AAL3211 SAN → CLT Jul 3, 13:55 UTCJul 3, 16:35 UTC2h 40m
2026-07-03 AAL1083 PHX → AUS Jul 3, 11:15 UTCJul 3, 12:20 UTC1h 5m
2026-07-03 AAL1083 PHX → AUS Jul 3, 11:12 UTCJul 3, 12:16 UTC1h 4m
2026-07-02 AAL2332 TPA → PHL Jul 2, 22:55 UTCJul 3, 02:45 UTC3h 50m
2026-07-02 AAL2630 SMF → PHX Jul 2, 20:05 UTCJul 2, 21:40 UTC1h 35m
2026-07-02 AAL2630 - Jul 2, 17:30 UTCJul 2, 19:05 UTC1h 35m
2026-07-02 AAL1958 - Jul 2, 12:05 UTCJul 2, 15:45 UTC3h 40m
2026-07-01 AAL1156 PHX → CMH Jul 1, 23:10 UTCJul 2, 02:30 UTC3h 20m
2026-07-01 AAL2630 SMF → PHX Jul 1, 20:10 UTCJul 1, 21:40 UTC1h 30m
2026-07-01 AAL2630 PHX → SMF Jul 1, 17:30 UTCJul 1, 19:05 UTC1h 35m
2026-07-01 AAL1404 - Jul 1, 14:50 UTCJul 1, 16:25 UTC1h 35m
2026-07-01 AAL1387 - Jul 1, 03:40 UTCJul 1, 05:45 UTC2h 5m

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 N944AN page for operator, model, and routing details .

Mode-S AD1C11 frequently asked

What is Mode-S code AD1C11?
AD1C11 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N944AN.
Where is Mode-S AD1C11 registered?
Mode-S code AD1C11 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 AD1C11 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD1C11, octal 53216021, decimal 11,344,913.
What flights does AD1C11 operate?
Mode-S AD1C11 has broadcast 20 distinct callsigns, including AAL2630, AAL2523, AAL1944, AAL1713, AAL1593.