Apparatus

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sensors Mode-S transponder

AD237F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N946AN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AD237F
Octal
53221577
Decimal
11,346,815
Country
US
Tail
N946AN
Type
B738
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
479
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AD237F.

Country allocation

The ICAO 24-bit address AD237F 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
AAL2280 - 7 2026-07-17
AAL2361 American Airlines 6 2026-06-05
AAL903 American Airlines 5 2026-07-07
AAL2427 American Airlines 5 2026-05-28
AAL2290 American Airlines 5 2026-06-05
AAL2200 American Airlines 5 2026-04-16
AAL2148 American Airlines 5 2026-06-09
AAL1851 American Airlines 5 2026-04-27
AAL1623 - 5 2026-06-16
AAL9784 American Airlines 4 2026-05-17
AAL695 American Airlines 4 2026-07-19
AAL3165 - 4 2026-07-08
AAL2915 American Airlines 4 2026-07-23
AAL2647 American Airlines 4 2026-04-30
AAL2059 American Airlines 4 2026-04-17
AAL2045 American Airlines 4 2026-04-18
AAL1989 American Airlines 4 2026-04-16
AAL1786 - 4 2026-06-30
AAL1752 - 4 2026-07-19
AAL595 American Airlines 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL378 BGI → PHL Jul 26, 16:55 UTCJul 26, 21:30 UTC4h 35m
2026-07-26 AAL1347 BOS → DFW Jul 26, 12:50 UTCJul 26, 15:10 UTC2h 20m
2026-07-25 AAL2935 SAN → CLT Jul 25, 23:15 UTCJul 26, 01:15 UTC2h 0m
2026-07-25 AAL330 YVR → DFW Jul 25, 18:25 UTCJul 25, 20:55 UTC2h 30m
2026-07-25 AAL330 YVR → DFW Jul 25, 18:12 UTCJul 25, 20:54 UTC2h 42m
2026-07-25 AAL335 MIA → EWR Jul 25, 13:55 UTCJul 25, 16:25 UTC2h 30m
2026-07-25 AAL335 MIA → EWR Jul 25, 13:49 UTCJul 25, 16:39 UTC2h 50m
2026-07-25 AAL1585 LAS → PHL Jul 25, 10:30 UTCJul 25, 11:45 UTC1h 15m
2026-07-25 AAL1585 LAS → PHL Jul 25, 10:24 UTCJul 25, 12:05 UTC1h 41m
2026-07-25 AAL1293 MSN → PHX Jul 25, 02:00 UTCJul 25, 03:45 UTC1h 45m
2026-07-25 AAL1293 MSN → PHX Jul 25, 01:55 UTCJul 25, 03:43 UTC1h 48m
2026-07-24 AAL1910 PDX → PHL Jul 24, 18:27 UTCJul 24, 21:53 UTC3h 26m
2026-07-24 AAL1910 PDX → PHL Jul 24, 18:30 UTCJul 24, 22:00 UTC3h 30m
2026-07-24 AAL1503 CUN → ORD Jul 24, 13:45 UTCJul 24, 16:45 UTC3h 0m
2026-07-24 AAL3324 BOS → ORD Jul 24, 09:25 UTCJul 24, 11:45 UTC2h 20m
2026-07-23 AAL1074 PHL → CLT Jul 23, 22:40 UTCJul 23, 23:45 UTC1h 5m
2026-07-23 AAL1074 PHL → CLT Jul 23, 22:38 UTCJul 24, 01:32 UTC2h 54m
2026-07-23 AAL2915 TPA → CLT Jul 23, 18:05 UTCJul 23, 20:50 UTC2h 45m
2026-07-23 AAL2915 TPA → CLT Jul 23, 18:00 UTCJul 23, 20:49 UTC2h 49m
2026-07-23 AAL2915 TPA → CLT Jul 23, 14:20 UTCJul 23, 16:45 UTC2h 25m
2026-07-23 AAL2915 TPA → CLT Jul 23, 14:18 UTCJul 23, 16:45 UTC2h 27m
2026-07-23 AAL1047 IND → MIA Jul 23, 10:25 UTCJul 23, 12:30 UTC2h 5m
2026-07-23 AAL3021 DFW → CMH Jul 23, 00:43 UTCJul 23, 03:34 UTC2h 51m
2026-07-23 AAL3021 DFW → CMH Jul 23, 00:45 UTCJul 23, 03:35 UTC2h 50m
2026-07-22 AAL2838 TPA → PHL Jul 22, 20:45 UTCJul 22, 22:55 UTC2h 10m
2026-07-22 AAL2838 TPA → PHL Jul 22, 20:40 UTCJul 22, 22:52 UTC2h 12m
2026-07-22 AAL2838 PHL → TPA Jul 22, 17:30 UTCJul 22, 19:40 UTC2h 10m
2026-07-22 AAL2561 RSW → ORD Jul 22, 12:15 UTCJul 22, 15:05 UTC2h 50m
2026-07-22 AAL2541 MIA → IAH Jul 22, 00:05 UTCJul 22, 02:15 UTC2h 10m
2026-07-21 AAL1222 BOS → MIA Jul 21, 19:49 UTCJul 21, 21:34 UTC1h 45m
2026-07-21 AAL1222 BOS → MIA Jul 21, 16:45 UTCJul 21, 21:35 UTC4h 50m
2026-07-21 AAL1498 - Jul 21, 12:05 UTCJul 21, 14:50 UTC2h 45m
2026-07-21 AAL1498 MEX → MIA Jul 21, 12:02 UTCJul 21, 14:49 UTC2h 47m
2026-07-20 AAL257 MIA → MEX Jul 20, 23:05 UTCJul 21, 01:50 UTC2h 44m
2026-07-20 AAL1028 AUA → MIA Jul 20, 18:35 UTCJul 20, 21:00 UTC2h 25m
2026-07-20 AAL1028 AUA → MIA Jul 20, 14:45 UTCJul 20, 17:05 UTC2h 20m
2026-07-20 AAL1196 EWR → MIA Jul 20, 09:40 UTCJul 20, 11:45 UTC2h 5m
2026-07-20 AAL1196 EWR → MIA Jul 20, 09:39 UTCJul 20, 12:04 UTC2h 25m
2026-07-20 AAL322 - Jul 20, 02:00 UTCJul 20, 04:20 UTC2h 20m
2026-07-20 AAL322 MIA → EWR Jul 20, 01:55 UTCJul 20, 04:33 UTC2h 38m
2026-07-19 AAL3265 BDL → DFW Jul 19, 22:05 UTCJul 20, 00:30 UTC2h 25m
2026-07-19 AAL3265 BDL → DFW Jul 19, 21:30 UTCJul 19, 21:40 UTC10m
2026-07-19 AAL1971 - Jul 19, 16:15 UTCJul 19, 19:45 UTC3h 30m
2026-07-19 AAL1971 CUN → PHL Jul 19, 16:12 UTCJul 19, 19:40 UTC3h 28m
2026-07-19 AAL1752 - Jul 19, 11:15 UTCJul 19, 13:45 UTC2h 30m
2026-07-19 AAL1752 PHL → CUN Jul 19, 11:14 UTCJul 19, 14:29 UTC3h 15m
2026-07-19 AAL695 MIA → DFW Jul 19, 03:00 UTCJul 19, 03:05 UTC5m
2026-07-19 AAL695 MIA → DFW Jul 19, 00:50 UTCJul 19, 02:55 UTC2h 5m
2026-07-19 AAL695 MIA → DFW Jul 19, 00:47 UTCJul 19, 02:56 UTC2h 9m
2026-07-18 AAL695 MIA → DFW Jul 18, 15:15 UTCJul 18, 17:30 UTC2h 15m

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 N946AN page for operator, model, and routing details .

Mode-S AD237F frequently asked

What is Mode-S code AD237F?
AD237F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N946AN.
Where is Mode-S AD237F registered?
Mode-S code AD237F 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 AD237F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD237F, octal 53221577, decimal 11,346,815.
What flights does AD237F operate?
Mode-S AD237F has broadcast 20 distinct callsigns, including AAL2280, AAL2361, AAL903, AAL2427, AAL2290.