Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A158C9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N186US · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A158C9
Octal
50254311
Decimal
10,574,025
Country
US
Tail
N186US
Type
A321
No current signal · last broadcast Jul 25, 03:40 UTC
Flights observed
518
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 03:40 UTC

Last known position

Most recent position reported by Mode-S A158C9.

Country allocation

The ICAO 24-bit address A158C9 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
AAL2845 American Airlines 8 2026-05-08
AAL717 - 6 2026-07-02
AAL2930 - 5 2026-07-15
AAL2760 - 5 2026-07-06
AAL2287 - 5 2026-07-11
AAL2101 - 5 2026-07-04
AAL1754 American Airlines 5 2026-07-24
AAL2993 - 4 2026-07-03
AAL2881 American Airlines 4 2026-05-17
AAL2846 - 4 2026-07-12
AAL2838 American Airlines 4 2026-05-11
AAL2602 - 4 2026-06-28
AAL2528 American Airlines 4 2026-04-30
AAL2487 - 4 2026-06-29
AAL2376 - 4 2026-06-18
AAL2239 - 4 2026-06-21
AAL2228 American Airlines 4 2026-07-22
AAL2127 - 4 2026-07-05
AAL2033 American Airlines 4 2026-05-09
AAL1972 American Airlines 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AAL1399 DFW → SAN Jul 25, 03:00 UTCJul 25, 03:40 UTC40m
2026-07-25 AAL1399 DFW → SAN Jul 25, 02:57 UTCJul 25, 03:39 UTC42m
2026-07-24 AAL1031 PHX → SJC Jul 24, 21:20 UTCJul 25, 01:25 UTC4h 5m
2026-07-24 AAL1754 IAH → DFW Jul 24, 16:30 UTCJul 24, 19:15 UTC2h 45m
2026-07-24 AAL1754 IAH → DFW Jul 24, 16:27 UTCJul 24, 19:14 UTC2h 47m
2026-07-24 AAL1754 IAH → DFW Jul 24, 12:00 UTCJul 24, 15:10 UTC3h 10m
2026-07-24 AAL2237 JFK → SJD Jul 24, 06:15 UTCJul 24, 10:25 UTC4h 10m
2026-07-24 AAL2236 LGA → DCA Jul 24, 02:30 UTCJul 24, 05:00 UTC2h 30m
2026-07-23 AAL1288 PVR → DFW Jul 23, 22:00 UTCJul 24, 00:10 UTC2h 10m
2026-07-23 AAL1288 PVR → DFW Jul 23, 18:30 UTCJul 23, 20:40 UTC2h 10m
2026-07-23 AAL617 DCA → TPA Jul 23, 14:50 UTCJul 23, 17:00 UTC2h 10m
2026-07-22 AAL1031 PHX → SJC Jul 22, 21:25 UTCJul 23, 00:15 UTC2h 50m
2026-07-22 AAL1031 PHX → SJC Jul 22, 21:23 UTCJul 23, 01:28 UTC4h 5m
2026-07-22 AAL1688 SRQ → PHL Jul 22, 15:35 UTCJul 22, 19:20 UTC3h 45m
2026-07-22 AAL1688 SRQ → PHL Jul 22, 15:35 UTCJul 22, 19:20 UTC3h 45m
2026-07-22 AAL1688 SRQ → PHL Jul 22, 15:00 UTCJul 22, 15:20 UTC20m
2026-07-22 AAL474 PHL → PHX Jul 22, 12:25 UTCJul 22, 14:25 UTC2h 0m
2026-07-22 AAL2228 CLT → BDL Jul 22, 02:40 UTCJul 22, 05:25 UTC2h 45m
2026-07-21 AAL2286 PHL → MIA Jul 21, 20:40 UTCJul 22, 00:00 UTC3h 20m
2026-07-21 AAL2286 PHL → MIA Jul 21, 20:39 UTCJul 21, 23:58 UTC3h 19m
2026-07-21 AAL2286 PHL → MIA Jul 21, 16:00 UTCJul 21, 19:20 UTC3h 20m
2026-07-21 AAL2078 JFK → CLT Jul 21, 12:31 UTCJul 21, 14:05 UTC1h 34m
2026-07-21 AA2078 JFK → CLT Jul 21, 04:20 UTCJul 21, 04:35 UTC15m
2026-07-21 AAL577 DFW → DEN Jul 21, 02:00 UTCJul 21, 03:25 UTC1h 25m
2026-07-21 AAL577 DFW → DEN Jul 21, 01:57 UTCJul 21, 03:30 UTC1h 33m
2026-07-20 AAL1615 MCI → CLT Jul 20, 21:20 UTCJul 21, 00:00 UTC2h 39m
2026-07-20 AAL1615 MCI → CLT Jul 20, 21:19 UTCJul 20, 23:53 UTC2h 34m
2026-07-20 AAL1615 MCI → CLT Jul 20, 17:35 UTCJul 20, 20:10 UTC2h 35m
2026-07-20 AAL1987 LGA → DFW Jul 20, 13:21 UTCJul 20, 16:16 UTC2h 55m
2026-07-20 AAL1987 LGA → DFW Jul 20, 13:25 UTCJul 20, 16:15 UTC2h 50m
2026-07-19 AAL3128 MKE → DFW Jul 19, 23:05 UTCJul 20, 01:30 UTC2h 25m
2026-07-19 AAL3117 CLT → CMH Jul 19, 18:35 UTCJul 19, 21:20 UTC2h 45m
2026-07-19 AAL1227 LGA → CLT Jul 19, 14:25 UTCJul 19, 16:55 UTC2h 30m
2026-07-19 AAL3189 AEX → DFW Jul 19, 10:10 UTCJul 19, 13:00 UTC2h 50m
2026-07-19 AAL2343 - Jul 19, 04:10 UTCJul 19, 06:35 UTC2h 25m
2026-07-18 AAL2690 LAS → LAX Jul 18, 23:20 UTCJul 19, 02:00 UTC2h 40m
2026-07-18 AAL2543 BOS → DFW Jul 18, 18:10 UTCJul 18, 21:40 UTC3h 30m
2026-07-18 AAL2543 BOS → DFW Jul 18, 11:55 UTCJul 18, 16:15 UTC4h 20m
2026-07-17 AAL619 - Jul 17, 13:45 UTCJul 18, 00:25 UTC10h 40m
2026-07-17 AAL1148 PHX → ORD Jul 17, 08:20 UTCJul 17, 11:35 UTC3h 15m
2026-07-17 AAL1148 PHX → ORD Jul 17, 08:19 UTCJul 17, 11:32 UTC3h 13m
2026-07-17 AAL2319 - Jul 17, 04:54 UTCJul 17, 06:54 UTC2h 0m
2026-07-16 AAL2024 - Jul 16, 23:25 UTCJul 17, 02:15 UTC2h 50m
2026-07-16 AAL1649 - Jul 16, 14:20 UTCJul 16, 21:30 UTC7h 10m
2026-07-16 AAL1881 - Jul 16, 01:35 UTCJul 16, 04:10 UTC2h 35m
2026-07-16 AAL1881 MIA → ORD Jul 16, 01:34 UTCJul 16, 04:09 UTC2h 35m
2026-07-15 AAL3083 DFW → MIA Jul 15, 21:41 UTCJul 16, 00:14 UTC2h 33m
2026-07-15 AAL3083 - Jul 15, 21:45 UTCJul 16, 00:15 UTC2h 30m
2026-07-15 AAL1186 LAX → DFW Jul 15, 16:15 UTCJul 15, 19:15 UTC3h 0m
2026-07-15 AAL1186 LAX → DFW Jul 15, 16:14 UTCJul 15, 19:09 UTC2h 55m

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 N186US page for operator, model, and routing details .

Mode-S A158C9 frequently asked

What is Mode-S code A158C9?
A158C9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N186US.
Where is Mode-S A158C9 registered?
Mode-S code A158C9 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 A158C9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 03:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A158C9, octal 50254311, decimal 10,574,025.
What flights does A158C9 operate?
Mode-S A158C9 has broadcast 20 distinct callsigns, including AAL2845, AAL717, AAL2930, AAL2760, AAL2287.