Apparatus

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sensors Mode-S transponder

A3A9AF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N335PH · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
A3A9AF
Octal
50724657
Decimal
10,725,807
Country
US
Tail
N335PH
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
545
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A3A9AF.

Country allocation

The ICAO 24-bit address A3A9AF 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
AAL2805 American Airlines 6 2026-04-16
AAL1935 American Airlines 6 2026-06-08
AAL3126 American Airlines 5 2026-06-10
AAL2079 American Airlines 5 2026-06-15
AAL1443 - 5 2026-06-29
AAL2813 American Airlines 4 2026-05-26
AAL2340 American Airlines 4 2026-06-17
AAL2338 American Airlines 4 2026-06-10
AAL2181 American Airlines 4 2026-07-23
AAL2124 American Airlines 4 2026-06-09
AAL2122 - 4 2026-06-22
AAL2100 American Airlines 4 2026-05-11
AAL1799 American Airlines 4 2026-04-13
AAL1179 American Airlines 4 2026-04-18
AAL9 - 3 2026-06-08
AAL877 - 3 2026-07-14
AAL483 American Airlines 3 2026-05-25
AAL413 American Airlines 3 2026-06-28
AAL394 American Airlines 3 2026-05-28
AAL3329 American Airlines 3 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2361 DEN → ORD Jul 26, 20:00 UTCJul 26, 21:45 UTC1h 45m
2026-07-26 AAL1680 DFW → CAE Jul 26, 16:30 UTCJul 26, 18:45 UTC2h 15m
2026-07-26 AAL1680 DFW → CAE Jul 26, 12:30 UTCJul 26, 14:45 UTC2h 15m
2026-07-26 AAL656 SJU → MIA Jul 26, 10:10 UTCJul 26, 10:45 UTC35m
2026-07-26 AAL1458 DFW → OKC Jul 26, 02:45 UTCJul 26, 03:20 UTC35m
2026-07-26 AAL1458 DFW → OKC Jul 26, 02:39 UTCJul 26, 03:17 UTC38m
2026-07-25 AAL1531 PHL → LAX Jul 25, 22:05 UTCJul 26, 00:45 UTC2h 40m
2026-07-25 AAL1531 PHL → LAX Jul 25, 22:01 UTCJul 26, 00:40 UTC2h 39m
2026-07-25 AAL1531 PHL → LAX Jul 25, 17:40 UTCJul 25, 20:25 UTC2h 45m
2026-07-25 AAL999 CVG → DFW Jul 25, 14:25 UTCJul 25, 15:40 UTC1h 15m
2026-07-25 AAL1062 CLT → BDL Jul 25, 03:05 UTCJul 25, 04:35 UTC1h 30m
2026-07-24 AAL1005 NAS → DFW Jul 24, 22:55 UTCJul 25, 01:25 UTC2h 30m
2026-07-24 AAL1005 NAS → DFW Jul 24, 18:40 UTCJul 24, 21:05 UTC2h 25m
2026-07-24 AAL2599 BUR → DFW Jul 24, 14:20 UTCJul 24, 17:10 UTC2h 50m
2026-07-24 AAL2597 DFW → BUR Jul 24, 02:45 UTCJul 24, 05:25 UTC2h 40m
2026-07-23 AAL324 IAH → MIA Jul 23, 21:30 UTCJul 24, 00:15 UTC2h 45m
2026-07-23 AAL324 IAH → MIA Jul 23, 17:20 UTCJul 23, 20:00 UTC2h 40m
2026-07-23 AAL2181 BJX → DFW Jul 23, 12:50 UTCJul 23, 14:45 UTC1h 55m
2026-07-22 AAL2181 BJX → DFW Jul 22, 21:55 UTCJul 23, 14:50 UTC16h 55m
2026-07-22 AAL1164 LGA → STL Jul 22, 14:45 UTCJul 22, 20:10 UTC5h 25m
2026-07-20 AAL390 - Jul 20, 17:50 UTCJul 20, 20:00 UTC2h 10m
2026-07-20 AAL389 DFW → MEX Jul 20, 14:05 UTCJul 20, 16:15 UTC2h 10m
2026-07-19 AAL1555 DFW → GRR Jul 19, 13:50 UTCJul 19, 15:41 UTC1h 51m
2026-07-19 AAL1554 DCA → MIA Jul 19, 02:25 UTCJul 19, 04:55 UTC2h 30m
2026-07-18 AAL1554 DCA → MIA Jul 18, 20:25 UTCJul 18, 22:15 UTC1h 50m
2026-07-18 AAL2258 LAS → ORD Jul 18, 14:25 UTCJul 18, 17:40 UTC3h 15m
2026-07-18 AAL2258 - Jul 18, 14:25 UTCJul 18, 17:45 UTC3h 20m
2026-07-17 AAL3236 DCA → ORD Jul 17, 22:45 UTCJul 18, 03:15 UTC4h 31m
2026-07-17 AAL3236 DCA → ORD Jul 17, 22:44 UTCJul 18, 03:22 UTC4h 38m
2026-07-17 AAL2915 TPA → CLT Jul 17, 18:34 UTCJul 17, 20:55 UTC2h 20m
2026-07-17 AAL2915 TPA → CLT Jul 17, 18:34 UTCJul 17, 20:52 UTC2h 18m
2026-07-17 AAL2915 TPA → CLT Jul 17, 14:24 UTCJul 17, 16:29 UTC2h 5m
2026-07-17 AAL1716 - Jul 17, 10:30 UTCJul 17, 13:00 UTC2h 30m
2026-07-17 AAL1594 MIA → STL Jul 17, 01:09 UTCJul 17, 03:30 UTC2h 20m
2026-07-17 AAL1594 MIA → STL Jul 17, 01:09 UTCJul 17, 03:29 UTC2h 20m
2026-07-16 AAL2581 SJU → MIA Jul 16, 21:06 UTCJul 16, 23:20 UTC2h 14m
2026-07-16 AAL2581 - Jul 16, 17:45 UTCJul 16, 23:25 UTC5h 40m
2026-07-16 AAL3211 LGA → MIA Jul 16, 14:01 UTCJul 16, 16:26 UTC2h 25m
2026-07-16 AAL3211 LGA → MIA Jul 16, 14:05 UTCJul 16, 16:30 UTC2h 25m
2026-07-16 AAL1083 - Jul 16, 11:05 UTCJul 16, 12:05 UTC1h 0m
2026-07-16 AAL1083 RDU → LGA Jul 16, 11:03 UTCJul 16, 12:09 UTC1h 6m
2026-07-15 AAL2371 DFW → RDU Jul 15, 17:45 UTCJul 15, 20:05 UTC2h 20m
2026-07-15 AAL1374 - Jul 15, 13:30 UTCJul 15, 15:50 UTC2h 20m
2026-07-14 AAL2233 DFW → MEX Jul 14, 22:15 UTCJul 15, 00:25 UTC2h 9m
2026-07-14 AAL2233 DFW → MEX Jul 14, 22:15 UTCJul 15, 00:24 UTC2h 9m
2026-07-14 AAL877 DFW → DFW Jul 14, 13:35 UTCJul 14, 19:20 UTC5h 45m
2026-07-14 AAL994 - Jul 14, 09:45 UTCJul 14, 11:20 UTC1h 35m
2026-07-14 AAL994 TYS → DFW Jul 14, 09:40 UTCJul 14, 11:19 UTC1h 39m
2026-07-14 AAL1081 DFW → TYS Jul 14, 05:35 UTCJul 14, 07:24 UTC1h 49m
2026-07-14 AAL1081 - Jul 14, 05:35 UTCJul 14, 07:25 UTC1h 50m

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 N335PH page for operator, model, and routing details .

Mode-S A3A9AF frequently asked

What is Mode-S code A3A9AF?
A3A9AF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N335PH.
Where is Mode-S A3A9AF registered?
Mode-S code A3A9AF 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 A3A9AF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A9AF, octal 50724657, decimal 10,725,807.
What flights does A3A9AF operate?
Mode-S A3A9AF has broadcast 20 distinct callsigns, including AAL2805, AAL1935, AAL3126, AAL2079, AAL1443.