Apparatus

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sensors Mode-S transponder

A37F12

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N324VL · BOEING 737 MAX 8 · operated by AMERICAN AIRLINES INC

Hex
A37F12
Octal
50677422
Decimal
10,714,898
Country
US
Tail
N324VL
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
398
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A37F12.

Country allocation

The ICAO 24-bit address A37F12 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
AAL2478 American Airlines 15 2026-07-23
AAL2623 - 8 2026-07-22
AAL653 - 6 2026-07-15
AAL384 American Airlines 6 2026-07-23
AAL2680 - 6 2026-07-06
AAL501 American Airlines 5 2026-07-19
AAL2911 - 5 2026-06-24
AAL2871 American Airlines 5 2026-07-22
AAL2672 - 5 2026-07-13
AAL1727 - 5 2026-06-25
AAL1092 - 5 2026-07-15
AAL623 American Airlines 4 2026-07-20
AAL502 - 4 2026-07-19
AAL3027 American Airlines 4 2026-07-24
AAL2799 American Airlines 4 2026-05-27
AAL2788 American Airlines 4 2026-05-18
AAL2744 American Airlines 4 2026-05-26
AAL2668 American Airlines 4 2026-05-23
AAL1749 - 4 2026-06-23
AAL1659 American Airlines 4 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2640 IAH → PHL Jul 26, 17:15 UTCJul 26, 20:50 UTC3h 35m
2026-07-26 AAL1431 MIA → ORD Jul 26, 12:55 UTCJul 26, 15:45 UTC2h 50m
2026-07-26 AAL1480 HNL → LAX Jul 26, 05:50 UTCJul 26, 10:30 UTC4h 41m
2026-07-26 AAL1924 CLT → BOS Jul 26, 00:30 UTCJul 26, 04:05 UTC3h 35m
2026-07-25 AAL2679 SRQ → DFW Jul 25, 18:45 UTCJul 25, 22:20 UTC3h 35m
2026-07-25 AAL2679 SRQ → DFW Jul 25, 18:40 UTCJul 25, 22:14 UTC3h 34m
2026-07-25 AAL2679 SRQ → DFW Jul 25, 13:35 UTCJul 25, 17:05 UTC3h 30m
2026-07-25 AAL1652 ORD → PHL Jul 25, 09:20 UTCJul 25, 11:00 UTC1h 40m
2026-07-25 AAL490 PHL → ORD Jul 25, 03:30 UTCJul 25, 04:55 UTC1h 25m
2026-07-24 AAL814 LAX → PHL Jul 24, 22:10 UTCJul 25, 01:00 UTC2h 50m
2026-07-24 AAL814 LAX → PHL Jul 24, 16:55 UTCJul 24, 20:25 UTC3h 30m
2026-07-24 AAL3027 LAX → CLT Jul 24, 13:10 UTCJul 24, 14:55 UTC1h 45m
2026-07-24 AAL3027 LAX → CLT Jul 24, 13:02 UTCJul 24, 14:47 UTC1h 45m
2026-07-24 AAL1659 CLT → SFO Jul 24, 01:35 UTCJul 24, 02:05 UTC30m
2026-07-24 AAL1659 CLT → SFO Jul 24, 01:30 UTCJul 24, 02:04 UTC34m
2026-07-23 AAL2478 SXM → CLT Jul 23, 20:00 UTCJul 23, 23:10 UTC3h 10m
2026-07-23 AAL2478 SXM → CLT Jul 23, 14:20 UTCJul 23, 17:30 UTC3h 10m
2026-07-23 AAL384 DCA → PVD Jul 23, 10:45 UTCJul 23, 11:45 UTC1h 0m
2026-07-22 AAL2871 SNA → DFW Jul 22, 23:00 UTCJul 23, 02:35 UTC3h 35m
2026-07-22 AAL2623 SJD → PHX Jul 22, 19:09 UTCJul 22, 20:45 UTC1h 36m
2026-07-22 AAL2623 - Jul 22, 16:25 UTCJul 22, 17:20 UTC55m
2026-07-22 AAL2601 ORD → PVR Jul 22, 11:10 UTCJul 22, 14:50 UTC3h 40m
2026-07-22 AAL3178 LAS → CLT Jul 22, 01:15 UTCJul 22, 01:45 UTC30m
2026-07-22 AAL3178 LAS → CLT Jul 22, 01:10 UTCJul 22, 01:40 UTC30m
2026-07-21 AAL2478 SXM → CLT Jul 21, 20:00 UTCJul 21, 23:25 UTC3h 25m
2026-07-21 AAL2478 SXM → CLT Jul 21, 19:46 UTCJul 21, 23:22 UTC3h 36m
2026-07-21 AAL2478 SXM → CLT Jul 21, 14:10 UTCJul 21, 17:15 UTC3h 5m
2026-07-21 AAL384 - Jul 21, 10:50 UTCJul 21, 11:45 UTC55m
2026-07-21 AAL384 PIT → CLT Jul 21, 10:46 UTCJul 21, 11:44 UTC58m
2026-07-20 AAL2871 SNA → DFW Jul 20, 23:00 UTCJul 21, 02:45 UTC3h 45m
2026-07-20 AAL2623 - Jul 20, 16:10 UTCJul 20, 20:45 UTC4h 35m
2026-07-20 AAL2645 - Jul 20, 11:15 UTCJul 20, 13:30 UTC2h 15m
2026-07-20 AAL623 PHX → MCI Jul 20, 02:43 UTCJul 20, 05:00 UTC2h 17m
2026-07-20 AAL623 PHX → MCI Jul 20, 02:45 UTCJul 20, 05:05 UTC2h 20m
2026-07-19 AAL502 - Jul 19, 22:00 UTCJul 19, 22:20 UTC20m
2026-07-19 AAL502 MEX → PHX Jul 19, 22:00 UTCJul 20, 00:55 UTC2h 55m
2026-07-19 AAL501 PHX → MEX Jul 19, 20:10 UTCJul 19, 20:25 UTC15m
2026-07-19 AAL501 PHX → MEX Jul 19, 17:50 UTCJul 19, 18:30 UTC40m
2026-07-19 AAL628 - Jul 19, 15:10 UTCJul 19, 16:10 UTC1h 0m
2026-07-19 AAL2637 PHX → SNA Jul 19, 04:25 UTCJul 19, 05:20 UTC55m
2026-07-18 AAL3143 MSP → PHX Jul 18, 13:00 UTCJul 18, 15:40 UTC2h 40m
2026-07-18 AAL3149 - Jul 18, 04:30 UTCJul 18, 06:25 UTC1h 55m
2026-07-18 AAL3149 DFW → MSP Jul 18, 04:28 UTCJul 18, 06:20 UTC1h 52m
2026-07-18 AAL2282 - Jul 18, 00:50 UTCJul 18, 03:20 UTC2h 31m
2026-07-17 AAL2282 DFW → PBI Jul 17, 19:15 UTCJul 17, 21:50 UTC2h 35m
2026-07-17 AAL2124 MCO → DFW Jul 17, 15:25 UTCJul 17, 17:40 UTC2h 15m
2026-07-17 AAL2124 MCO → DFW Jul 17, 15:23 UTCJul 17, 17:39 UTC2h 16m
2026-07-17 AAL3273 DCA → MCO Jul 17, 12:04 UTCJul 17, 13:45 UTC1h 40m
2026-07-17 AAL3273 DCA → MCO Jul 17, 12:00 UTCJul 17, 13:44 UTC1h 44m
2026-07-16 AAL591 - Jul 16, 19:40 UTCJul 17, 00:25 UTC4h 45m

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 N324VL page for operator, model, and routing details .

Mode-S A37F12 frequently asked

What is Mode-S code A37F12?
A37F12 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N324VL.
Where is Mode-S A37F12 registered?
Mode-S code A37F12 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 A37F12 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A37F12, octal 50677422, decimal 10,714,898.
What flights does A37F12 operate?
Mode-S A37F12 has broadcast 20 distinct callsigns, including AAL2478, AAL2623, AAL653, AAL384, AAL2680.