Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 6h ago
Flights observed
209
Distinct callsigns
20
Country
US
Last broadcast
6h 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 6 2026-06-11
AAL2911 American Airlines 4 2026-06-12
AAL2799 American Airlines 4 2026-05-27
AAL2788 American Airlines 4 2026-05-18
AAL2744 American Airlines 4 2026-05-26
AAL2680 American Airlines 4 2026-05-23
AAL2668 American Airlines 4 2026-05-23
AAL653 American Airlines 3 2026-06-12
AAL3316 American Airlines 3 2026-05-27
AAL2968 American Airlines 3 2026-05-08
AAL2950 American Airlines 3 2026-05-21
AAL2943 American Airlines 3 2026-05-15
AAL2623 American Airlines 3 2026-06-02
AAL2495 American Airlines 3 2026-05-16
AAL2110 American Airlines 3 2026-05-04
AAL2064 American Airlines 3 2026-05-24
AAL1894 American Airlines 3 2026-05-21
AAL1795 American Airlines 3 2026-05-15
AAL1727 American Airlines 3 2026-06-13
BOE508 - 2 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 AAL1727 CLT → JFK Jun 13, 01:30 UTCJun 13, 02:55 UTC1h 25m
2026-06-12 AAL2911 LGA → ORD Jun 12, 22:25 UTCJun 12, 23:25 UTC1h 0m
2026-06-12 AAL2911 LGA → ORD Jun 12, 22:22 UTCJun 12, 23:25 UTC1h 3m
2026-06-12 AAL1954 PHL → SFO Jun 12, 17:45 UTCJun 12, 20:40 UTC2h 55m
2026-06-12 AAL653 BOS → CLT Jun 12, 12:05 UTCJun 12, 16:05 UTC4h 0m
2026-06-12 AAL1749 CLT → PIT Jun 12, 01:30 UTCJun 12, 02:30 UTC1h 0m
2026-06-11 AAL2478 SXM → CLT Jun 11, 19:05 UTCJun 11, 22:30 UTC3h 25m
2026-06-11 AAL2478 SXM → CLT Jun 11, 18:49 UTCJun 11, 22:15 UTC3h 26m
2026-06-11 AAL2478 SXM → CLT Jun 11, 14:20 UTCJun 11, 17:10 UTC2h 50m
2026-06-11 AAL3296 ORD → BOS Jun 11, 11:30 UTCJun 11, 12:05 UTC35m
2026-06-11 AAL3123 CLT → MYR Jun 11, 01:15 UTCJun 11, 01:35 UTC20m
2026-06-10 AAL2177 DFW → SFO Jun 10, 14:30 UTCJun 10, 18:25 UTC3h 55m
2026-06-10 AAL2637 PHX → SNA Jun 10, 04:15 UTCJun 10, 05:05 UTC50m
2026-06-09 AAL2339 PHX → JFK Jun 9, 21:35 UTCJun 10, 02:25 UTC4h 50m
2026-06-09 AAL1135 MIA → PEI Jun 9, 17:00 UTCJun 9, 20:45 UTC3h 45m
2026-06-09 AAL99 RSW → ORD Jun 9, 13:20 UTCJun 9, 14:35 UTC1h 15m
2026-06-09 AAL1062 CLT → BDL Jun 9, 03:40 UTCJun 9, 05:05 UTC1h 25m
2026-06-09 AAL1062 CLT → BDL Jun 9, 03:38 UTCJun 9, 05:00 UTC1h 22m
2026-06-08 AAL1842 CLT → MSY Jun 8, 18:25 UTCJun 9, 02:00 UTC7h 35m
2026-06-08 AAL3068 LGA → DFW Jun 8, 13:55 UTCJun 8, 16:50 UTC2h 55m
2026-06-07 AAL952 PHL → DFW Jun 7, 22:15 UTCJun 8, 00:45 UTC2h 30m
2026-06-07 AAL1138 IND → PHL Jun 7, 15:20 UTCJun 7, 19:20 UTC4h 0m
2026-06-07 AAL604 CLT → BOS Jun 7, 10:50 UTCJun 7, 12:35 UTC1h 45m
2026-06-07 AAL983 MIA → MSY Jun 7, 01:35 UTCJun 7, 03:35 UTC2h 0m
2026-06-07 AAL983 MIA → MSY Jun 7, 01:34 UTCJun 7, 03:32 UTC1h 58m
2026-06-06 AAL448 SFO → CLT Jun 6, 19:41 UTCJun 6, 23:49 UTC4h 8m
2026-06-06 AAL643 MIA → ORD Jun 6, 14:20 UTCJun 6, 23:50 UTC9h 30m
2026-06-06 AAL655 JFK → MIA Jun 6, 09:55 UTCJun 6, 12:14 UTC2h 20m
2026-06-06 AAL655 JFK → MIA Jun 6, 09:50 UTCJun 6, 12:14 UTC2h 24m
2026-06-05 AAL1224 SFO → PHL Jun 5, 21:05 UTCJun 6, 01:20 UTC4h 15m
2026-06-05 AAL3058 EWR → PHX Jun 5, 15:10 UTCJun 5, 19:45 UTC4h 35m
2026-06-05 AAL1782 LGA → CLT Jun 5, 12:15 UTCJun 5, 13:35 UTC1h 20m
2026-06-05 AAL1113 BGR → PHL Jun 5, 09:15 UTCJun 5, 10:30 UTC1h 15m
2026-06-04 AAL1071 PHL → ORD Jun 4, 22:40 UTCJun 5, 00:10 UTC1h 30m
2026-06-04 AAL2309 DFW → CVG Jun 4, 19:40 UTCJun 4, 20:40 UTC1h 0m
2026-06-04 AAL2309 DFW → CVG Jun 4, 17:20 UTCJun 4, 18:10 UTC50m
2026-06-04 AAL2278 PHL → MIA Jun 4, 14:35 UTCJun 4, 16:05 UTC1h 30m
2026-06-04 AAL2278 PHL → MIA Jun 4, 11:50 UTCJun 4, 13:15 UTC1h 25m
2026-06-03 AAL828 MEX → CLT Jun 3, 18:50 UTCJun 3, 22:00 UTC3h 10m
2026-06-03 AAL829 CLT → MEX Jun 3, 14:05 UTCJun 3, 17:20 UTC3h 15m
2026-06-03 AAL384 DCA → PVD Jun 3, 10:50 UTCJun 3, 11:50 UTC1h 0m
2026-06-03 AAL384 DCA → PVD Jun 3, 10:47 UTCJun 3, 11:45 UTC58m
2026-06-03 AAL2871 SNA → DFW Jun 3, 00:25 UTCJun 3, 04:05 UTC3h 40m
2026-06-02 AAL2623 MIA → DCA Jun 2, 20:05 UTCJun 2, 21:10 UTC1h 5m
2026-06-02 AAL2623 MIA → DCA Jun 2, 16:35 UTCJun 2, 17:35 UTC1h 0m
2026-06-02 AAL2623 MIA → DCA Jun 2, 16:35 UTCJun 2, 18:14 UTC1h 39m
2026-06-02 AAL1694 TPA → DFW Jun 2, 13:20 UTCJun 2, 14:50 UTC1h 30m
2026-06-02 AAL1940 MEM → DFW Jun 2, 02:45 UTCJun 2, 05:55 UTC3h 10m
2026-06-01 AAL1647 MCO → ORD Jun 1, 19:00 UTCJun 2, 01:10 UTC6h 10m
2026-06-01 AAL701 PHL → DFW Jun 1, 13:50 UTCJun 1, 17:35 UTC3h 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 6h 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, AAL2911, AAL2799, AAL2788, AAL2744.