Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3B529

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N338ST · BOEING 737 MAX 8 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A3B529
Octal
50732451
Decimal
10,728,745
Country
US
Tail
N338ST
Type
B38M
No current signal · last broadcast 21m ago
Flights observed
415
Distinct callsigns
20
Country
US
Last broadcast
21m ago

Last known position

Most recent position reported by Mode-S A3B529.

Country allocation

The ICAO 24-bit address A3B529 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
AAL916 - 8 2026-07-12
AAL913 - 6 2026-07-12
AAL589 American Airlines 5 2026-05-14
AAL2967 American Airlines 5 2026-05-05
AAL2679 - 5 2026-06-21
AAL264 - 5 2026-06-25
AAL249 - 5 2026-07-09
AAL2147 American Airlines 5 2026-05-13
AAL1272 American Airlines 5 2026-05-08
AAL990 - 4 2026-07-02
AAL802 - 4 2026-06-23
AAL650 American Airlines 4 2026-06-03
AAL501 - 4 2026-06-30
AAL412 American Airlines 4 2026-05-08
AAL406 American Airlines 4 2026-05-07
AAL3017 - 4 2026-07-11
AAL2962 American Airlines 4 2026-05-05
AAL2520 American Airlines 4 2026-07-08
AAL1816 - 4 2026-07-14
AAL1560 American Airlines 4 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL1816 - Jul 14, 05:45 UTCJul 14, 06:10 UTC25m
2026-07-14 AAL1816 - Jul 14, 02:15 UTCJul 14, 02:50 UTC35m
2026-07-13 AAL1816 EWR → TUS Jul 13, 21:40 UTCJul 14, 02:50 UTC5h 10m
2026-07-13 AAL1816 EWR → TUS Jul 13, 21:38 UTCJul 14, 01:57 UTC4h 19m
2026-07-13 AAL1823 - Jul 13, 17:45 UTCJul 13, 20:10 UTC2h 25m
2026-07-13 AAL2259 - Jul 13, 01:10 UTCJul 13, 15:00 UTC13h 50m
2026-07-12 AAL916 BOG → MIA Jul 12, 19:33 UTCJul 12, 22:55 UTC3h 22m
2026-07-12 AAL916 - Jul 12, 19:35 UTCJul 12, 19:45 UTC10m
2026-07-12 AAL913 - Jul 12, 14:40 UTCJul 12, 17:45 UTC3h 5m
2026-07-12 AAL1047 - Jul 12, 11:01 UTCJul 12, 13:05 UTC2h 5m
2026-07-12 AAL1047 IAH → MIA Jul 12, 10:58 UTCJul 12, 13:15 UTC2h 17m
2026-07-12 AAL2541 - Jul 12, 00:20 UTCJul 12, 02:30 UTC2h 10m
2026-07-11 AAL3017 LGA → MIA Jul 11, 19:59 UTCJul 11, 23:06 UTC3h 7m
2026-07-11 AAL3017 LGA → MIA Jul 11, 20:00 UTCJul 11, 23:00 UTC3h 0m
2026-07-11 AAL2805 TPA → LGA Jul 11, 15:10 UTCJul 11, 17:35 UTC2h 25m
2026-07-11 AAL2845 - Jul 11, 00:25 UTCJul 11, 00:40 UTC15m
2026-07-10 AAL2845 LGA → TPA Jul 10, 21:29 UTCJul 11, 00:08 UTC2h 39m
2026-07-10 AAL2845 LGA → TPA Jul 10, 21:30 UTCJul 11, 00:40 UTC3h 10m
2026-07-10 AAL2931 - Jul 10, 17:45 UTCJul 10, 18:50 UTC1h 5m
2026-07-10 AAL2931 PWM → LGA Jul 10, 17:39 UTCJul 10, 18:40 UTC1h 1m
2026-07-10 AAL2931 - Jul 10, 15:40 UTCJul 10, 16:20 UTC40m
2026-07-10 AAL2859 - Jul 10, 10:20 UTCJul 10, 12:35 UTC2h 15m
2026-07-10 AAL353 ORD → TPA Jul 10, 04:30 UTCJul 10, 06:55 UTC2h 25m
2026-07-09 AAL250 - Jul 9, 21:05 UTCJul 10, 00:45 UTC3h 40m
2026-07-09 AAL249 - Jul 9, 15:30 UTCJul 9, 19:20 UTC3h 50m
2026-07-09 AAL249 ORD → MEX Jul 9, 15:27 UTCJul 9, 19:15 UTC3h 48m
2026-07-08 AAL2520 SEA → ORD Jul 8, 21:30 UTCJul 9, 01:25 UTC3h 55m
2026-07-08 AAL2520 DFW → YYC Jul 8, 15:45 UTCJul 8, 19:30 UTC3h 45m
2026-07-08 AAL392 LGA → ORD Jul 8, 11:40 UTCJul 8, 13:23 UTC1h 43m
2026-07-08 AAL392 LGA → ORD Jul 8, 11:40 UTCJul 8, 13:40 UTC2h 0m
2026-07-07 AAL952 - Jul 7, 21:35 UTCJul 8, 00:00 UTC2h 25m
2026-07-07 AAL1627 DCA → MIA Jul 7, 16:05 UTCJul 7, 18:15 UTC2h 10m
2026-07-07 AAL1627 DCA → MIA Jul 7, 16:02 UTCJul 7, 18:10 UTC2h 8m
2026-07-07 AAL2345 - Jul 7, 13:15 UTCJul 7, 14:40 UTC1h 25m
2026-07-06 AAL2537 RIC → CLT Jul 6, 23:30 UTCJul 7, 03:10 UTC3h 40m
2026-07-06 AAL2537 RIC → CLT Jul 6, 23:29 UTCJul 7, 03:10 UTC3h 41m
2026-07-06 AAL3199 PHX → SFO Jul 6, 19:30 UTCJul 6, 21:15 UTC1h 45m
2026-07-06 AAL3199 PHX → SFO Jul 6, 19:30 UTCJul 6, 21:05 UTC1h 35m
2026-07-04 AAL2829 JFK → PHX Jul 4, 17:30 UTCJul 4, 22:05 UTC4h 35m
2026-07-04 AAL1051 - Jul 4, 12:45 UTCJul 4, 15:25 UTC2h 40m
2026-07-04 AAL1480 - Jul 4, 05:45 UTCJul 4, 10:05 UTC4h 20m
2026-07-03 AAL1160 - Jul 3, 22:15 UTCJul 4, 02:05 UTC3h 50m
2026-07-03 AAL9604 - Jul 3, 17:35 UTCJul 3, 20:45 UTC3h 10m
2026-07-03 AAL9604 MIA → ORD Jul 3, 17:33 UTCJul 3, 20:43 UTC3h 10m
2026-07-03 AAL835 ORD → MIA Jul 3, 13:15 UTCJul 3, 15:40 UTC2h 25m
2026-07-02 AAL3177 DTW → DFW Jul 2, 18:33 UTCJul 2, 21:12 UTC2h 39m
2026-07-02 AAL990 - Jul 2, 13:30 UTCJul 2, 21:20 UTC7h 50m
2026-07-02 AAL384 - Jul 2, 10:45 UTCJul 2, 11:45 UTC1h 0m
2026-07-02 AAL384 PIT → CLT Jul 2, 10:44 UTCJul 2, 11:42 UTC58m
2026-07-01 AAL2871 - Jul 1, 23:00 UTCJul 2, 02:40 UTC3h 40m

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 N338ST page for operator, model, and routing details .

Mode-S A3B529 frequently asked

What is Mode-S code A3B529?
A3B529 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N338ST.
Where is Mode-S A3B529 registered?
Mode-S code A3B529 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 A3B529 broadcasting right now?
No active broadcast right now. Last signal was 21m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3B529, octal 50732451, decimal 10,728,745.
What flights does A3B529 operate?
Mode-S A3B529 has broadcast 20 distinct callsigns, including AAL916, AAL913, AAL589, AAL2967, AAL2679.