Apparatus

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sensors Mode-S transponder

A0C42C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N149AN · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A0C42C
Octal
50142054
Decimal
10,535,980
Country
US
Tail
N149AN
Type
A321
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
553
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A0C42C.

Country allocation

The ICAO 24-bit address A0C42C 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
AAL2003 American Airlines 7 2026-07-20
AAL1847 American Airlines 7 2026-07-19
AAL2284 - 6 2026-07-05
AAL674 American Airlines 5 2026-06-15
AAL3001 American Airlines 5 2026-07-22
AAL2857 American Airlines 5 2026-06-15
AAL2834 American Airlines 5 2026-05-17
AAL2822 - 5 2026-07-14
AAL2511 American Airlines 5 2026-04-17
AAL2069 - 5 2026-06-15
AAL1322 - 5 2026-07-19
AAL1196 American Airlines 5 2026-05-21
AAL1085 American Airlines 5 2026-06-13
AAL514 - 4 2026-07-19
AAL3272 - 4 2026-07-16
AAL2919 - 4 2026-06-18
AAL2853 American Airlines 4 2026-05-10
AAL2387 American Airlines 4 2026-05-13
AAL2325 American Airlines 4 2026-04-15
AAL1854 American Airlines 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1155 LAS → PHL Jul 26, 21:50 UTCJul 26, 22:45 UTC55m
2026-07-26 AAL2238 MYR → DFW Jul 26, 17:30 UTCJul 26, 20:20 UTC2h 50m
2026-07-26 AAL2238 MYR → DFW Jul 26, 13:40 UTCJul 26, 16:00 UTC2h 20m
2026-07-26 AAL2283 MIA → LAX Jul 26, 07:50 UTCJul 26, 11:05 UTC3h 15m
2026-07-26 AAL2283 MIA → LAX Jul 26, 03:25 UTCJul 26, 06:45 UTC3h 21m
2026-07-25 AAL2286 PHL → MIA Jul 25, 22:35 UTCJul 26, 01:50 UTC3h 15m
2026-07-25 AAL2286 PHL → MIA Jul 25, 18:05 UTCJul 25, 21:25 UTC3h 20m
2026-07-25 AAL2195 SLC → DFW Jul 25, 14:25 UTCJul 25, 16:30 UTC2h 5m
2026-07-25 AAL558 DFW → EWR Jul 25, 01:10 UTCJul 25, 03:25 UTC2h 15m
2026-07-24 AAL1973 DFW → SFO Jul 24, 20:35 UTCJul 24, 23:45 UTC3h 10m
2026-07-24 AAL1973 DFW → SFO Jul 24, 15:50 UTCJul 24, 19:15 UTC3h 25m
2026-07-24 AAL1902 ELP → DFW Jul 24, 12:30 UTCJul 24, 14:20 UTC1h 50m
2026-07-23 AAL215 CUN → ORD Jul 23, 20:06 UTCJul 23, 23:28 UTC3h 22m
2026-07-23 AAL215 CUN → ORD Jul 23, 20:10 UTCJul 23, 23:40 UTC3h 30m
2026-07-23 AAL492 LAX → MIA Jul 23, 15:20 UTCJul 23, 18:25 UTC3h 5m
2026-07-23 AAL581 SFO → MIA Jul 23, 10:55 UTCJul 23, 13:45 UTC2h 50m
2026-07-23 AAL716 CLT → MUC Jul 23, 00:40 UTCJul 23, 03:10 UTC2h 30m
2026-07-22 AAL716 CLT → MUC Jul 22, 20:10 UTCJul 22, 22:35 UTC2h 25m
2026-07-22 AAL3001 SDF → CLT Jul 22, 18:10 UTCJul 22, 18:40 UTC30m
2026-07-22 AAL3001 SDF → CLT Jul 22, 16:30 UTCJul 22, 16:45 UTC15m
2026-07-22 AAL3001 SDF → CLT Jul 22, 16:25 UTCJul 22, 18:39 UTC2h 14m
2026-07-22 AAL3001 SDF → CLT Jul 22, 13:15 UTCJul 22, 13:25 UTC10m
2026-07-22 AAL3001 SDF → CLT Jul 22, 11:15 UTCJul 22, 11:45 UTC30m
2026-07-21 AAL2690 LAS → LAX Jul 21, 01:20 UTCJul 21, 03:45 UTC2h 25m
2026-07-20 AAL2988 STT → CLT Jul 20, 21:35 UTCJul 20, 23:35 UTC2h 0m
2026-07-20 AAL1866 - Jul 20, 16:10 UTCJul 20, 18:50 UTC2h 40m
2026-07-20 AAL1866 DFW → FLL Jul 20, 12:15 UTCJul 20, 14:50 UTC2h 35m
2026-07-20 AAL2003 DCA → LGA Jul 20, 07:05 UTCJul 20, 10:20 UTC3h 15m
2026-07-19 AAL751 - Jul 19, 23:15 UTCJul 20, 04:20 UTC5h 5m
2026-07-19 AAL2098 ORD → PHL Jul 19, 20:10 UTCJul 19, 21:25 UTC1h 15m
2026-07-19 AAL1312 DFW → MCO Jul 19, 16:05 UTCJul 19, 18:35 UTC2h 30m
2026-07-19 AAL1312 DFW → MCO Jul 19, 16:02 UTCJul 19, 18:33 UTC2h 31m
2026-07-19 AAL1847 STL → LGA Jul 19, 11:40 UTCJul 19, 14:25 UTC2h 45m
2026-07-19 AAL1847 STL → LGA Jul 19, 09:55 UTCJul 19, 10:10 UTC15m
2026-07-19 AAL514 - Jul 19, 08:10 UTCJul 19, 08:25 UTC15m
2026-07-19 AAL514 - Jul 19, 04:05 UTCJul 19, 06:35 UTC2h 30m
2026-07-19 AAL1322 - Jul 19, 01:05 UTCJul 19, 02:35 UTC1h 30m
2026-07-19 AAL1322 DEN → DFW Jul 19, 01:05 UTCJul 19, 02:31 UTC1h 26m
2026-07-18 AAL1322 - Jul 18, 22:00 UTCJul 18, 23:35 UTC1h 35m
2026-07-18 AAL1304 SJD → DFW Jul 18, 17:44 UTCJul 18, 20:01 UTC2h 17m
2026-07-18 AAL1304 DFW → DFW Jul 18, 14:10 UTCJul 18, 20:10 UTC6h 0m
2026-07-18 AAL2091 - Jul 18, 10:05 UTCJul 18, 11:15 UTC1h 10m
2026-07-18 AAL872 - Jul 18, 05:40 UTCJul 18, 06:40 UTC1h 0m
2026-07-18 AAL1322 - Jul 18, 02:55 UTCJul 18, 04:20 UTC1h 25m
2026-07-18 AAL1322 DFW → DEN Jul 18, 00:19 UTCJul 18, 01:50 UTC1h 30m
2026-07-17 AAL3245 TPA → DFW Jul 17, 20:00 UTCJul 17, 22:15 UTC2h 15m
2026-07-17 AAL3245 DFW → TPA Jul 17, 15:05 UTCJul 17, 17:09 UTC2h 5m
2026-07-17 AAL1768 TPA → DFW Jul 17, 11:10 UTCJul 17, 13:20 UTC2h 10m
2026-07-17 AAL844 DFW → TPA Jul 17, 00:23 UTCJul 17, 02:25 UTC2h 2m
2026-07-17 AAL844 DFW → TPA Jul 17, 00:25 UTCJul 17, 02:34 UTC2h 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 N149AN page for operator, model, and routing details .

Mode-S A0C42C frequently asked

What is Mode-S code A0C42C?
A0C42C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N149AN.
Where is Mode-S A0C42C registered?
Mode-S code A0C42C 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 A0C42C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0C42C, octal 50142054, decimal 10,535,980.
What flights does A0C42C operate?
Mode-S A0C42C has broadcast 20 distinct callsigns, including AAL2003, AAL1847, AAL2284, AAL674, AAL3001.