Apparatus

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sensors Mode-S transponder

A9D44C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N732US · AIRBUS A-319 · operated by AMERICAN AIRLINES INC

Hex
A9D44C
Octal
52352114
Decimal
11,129,932
Country
US
Tail
N732US
Type
A319
No current signal · last broadcast Jul 26, 22:05 UTC
Flights observed
606
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Last known position

Most recent position reported by Mode-S A9D44C.

Country allocation

The ICAO 24-bit address A9D44C 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
AAL2085 American Airlines 8 2026-05-31
AAL2044 American Airlines 8 2026-05-31
AAL3275 American Airlines 6 2026-06-05
AAL2504 - 6 2026-07-15
AAL2141 American Airlines 6 2026-06-07
AAL1672 - 6 2026-07-16
AAL2397 American Airlines 5 2026-07-23
AAL2208 - 5 2026-07-13
AAL1078 - 5 2026-07-12
AAL1008 - 5 2026-07-16
AAL876 American Airlines 4 2026-06-07
AAL473 American Airlines 4 2026-05-13
AAL443 American Airlines 4 2026-07-24
AAL3243 American Airlines 4 2026-06-11
AAL3224 American Airlines 4 2026-06-21
AAL2983 - 4 2026-07-12
AAL2965 - 4 2026-06-21
AAL2905 - 4 2026-07-14
AAL2809 American Airlines 4 2026-06-15
AAL2736 American Airlines 4 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL470 DFW → PHL Jul 26, 20:10 UTCJul 26, 22:05 UTC1h 55m
2026-07-26 AAL2445 BOS → MIA Jul 26, 16:10 UTCJul 26, 18:35 UTC2h 25m
2026-07-26 AAL2445 BOS → MIA Jul 26, 16:07 UTCJul 26, 18:28 UTC2h 21m
2026-07-26 AAL2445 BOS → MIA Jul 26, 12:45 UTCJul 26, 15:00 UTC2h 15m
2026-07-26 AAL2445 BOS → MIA Jul 26, 12:42 UTCJul 26, 15:01 UTC2h 19m
2026-07-24 AAL3270 ORD → CLT Jul 24, 10:10 UTCJul 24, 11:50 UTC1h 40m
2026-07-24 AAL443 CLT → DCA Jul 24, 02:25 UTCJul 24, 04:10 UTC1h 45m
2026-07-23 AAL2397 FLL → CLT Jul 23, 22:25 UTCJul 23, 23:20 UTC55m
2026-07-23 AAL2397 FLL → CLT Jul 23, 19:50 UTCJul 23, 21:05 UTC1h 15m
2026-07-23 AAL2865 PUJ → PHL Jul 23, 16:40 UTCJul 23, 18:25 UTC1h 45m
2026-07-23 AAL1992 SEA → DFW Jul 23, 13:55 UTCJul 23, 15:36 UTC1h 41m
2026-07-23 AAL1992 SEA → DFW Jul 23, 14:00 UTCJul 23, 15:35 UTC1h 35m
2026-07-23 AAL1654 DEN → CLT Jul 23, 00:10 UTCJul 23, 01:15 UTC1h 5m
2026-07-22 AAL1654 DEN → CLT Jul 22, 21:50 UTCJul 22, 23:15 UTC1h 25m
2026-07-22 AAL2697 DFW → LAX Jul 22, 18:30 UTCJul 22, 20:45 UTC2h 15m
2026-07-22 AAL2697 DFW → LAX Jul 22, 18:27 UTCJul 22, 20:38 UTC2h 11m
2026-07-22 AAL2697 DFW → LAX Jul 22, 15:10 UTCJul 22, 17:30 UTC2h 20m
2026-07-22 AAL958 MCO → DCA Jul 22, 03:35 UTCJul 22, 05:25 UTC1h 50m
2026-07-22 AAL958 MCO → DCA Jul 22, 03:32 UTCJul 22, 05:23 UTC1h 51m
2026-07-21 AAL2803 - Jul 21, 23:50 UTCJul 22, 00:25 UTC35m
2026-07-21 AAL2803 MIA → MCO Jul 21, 23:44 UTCJul 22, 00:22 UTC38m
2026-07-21 AAL1339 CLT → IND Jul 21, 19:55 UTCJul 21, 22:25 UTC2h 30m
2026-07-21 AAL1339 CLT → IND Jul 21, 19:14 UTCJul 21, 22:22 UTC3h 8m
2026-07-21 AAL2691 ORD → SFO Jul 21, 14:35 UTCJul 21, 16:55 UTC2h 20m
2026-07-21 AAL2691 ORD → SFO Jul 21, 14:32 UTCJul 21, 17:38 UTC3h 6m
2026-07-21 AAL1733 DFW → MKE Jul 21, 11:50 UTCJul 21, 12:30 UTC40m
2026-07-21 AAL1700 DFW → EWR Jul 21, 01:35 UTCJul 21, 02:10 UTC35m
2026-07-20 AAL2072 CLT → ORF Jul 20, 23:30 UTCJul 21, 00:20 UTC49m
2026-07-20 AAL2072 CLT → ORF Jul 20, 23:29 UTCJul 21, 00:13 UTC44m
2026-07-20 AAL2072 CLT → ORF Jul 20, 21:30 UTCJul 20, 22:20 UTC50m
2026-07-20 AAL2831 - Jul 20, 19:20 UTCJul 20, 20:00 UTC40m
2026-07-20 AAL2831 HWO → TPA Jul 20, 17:15 UTCJul 20, 17:55 UTC40m
2026-07-20 AAL2526 ATL → MIA Jul 20, 14:15 UTCJul 20, 15:40 UTC1h 25m
2026-07-20 AAL443 - Jul 20, 02:30 UTCJul 20, 04:05 UTC1h 35m
2026-07-20 AAL443 - Jul 20, 02:15 UTCJul 20, 02:20 UTC5m
2026-07-20 AAL443 PHL → PHL Jul 20, 01:10 UTCJul 20, 01:15 UTC5m
2026-07-19 AAL2700 - Jul 19, 22:40 UTCJul 20, 00:55 UTC2h 15m
2026-07-18 AAL2700 PHL → SRQ Jul 18, 18:10 UTCJul 18, 20:30 UTC2h 20m
2026-07-18 AAL1015 - Jul 18, 11:25 UTCJul 18, 13:45 UTC2h 20m
2026-07-17 AAL1872 PSQ → XNA Jul 17, 22:35 UTCJul 18, 01:00 UTC2h 25m
2026-07-17 AAL2354 RSW → ORD Jul 17, 20:00 UTCJul 17, 21:05 UTC1h 5m
2026-07-17 AAL2354 RSW → ORD Jul 17, 19:54 UTCJul 17, 21:05 UTC1h 11m
2026-07-17 AAL2354 RSW → ORD Jul 17, 17:20 UTCJul 17, 18:19 UTC1h 0m
2026-07-17 AAL2774 AUS → PHL Jul 17, 12:40 UTCJul 17, 15:44 UTC3h 5m
2026-07-16 AAL1314 - Jul 16, 22:00 UTCJul 17, 01:00 UTC3h 0m
2026-07-16 AAL1314 PHL → AUS Jul 16, 21:57 UTCJul 17, 00:56 UTC2h 59m
2026-07-16 AAL1323 - Jul 16, 18:44 UTCJul 16, 20:39 UTC1h 55m
2026-07-16 AAL3051 - Jul 16, 14:55 UTCJul 16, 16:19 UTC1h 25m
2026-07-16 AAL1008 - Jul 16, 11:15 UTCJul 16, 12:34 UTC1h 20m
2026-07-16 AAL1008 CHS → PHL Jul 16, 11:10 UTCJul 16, 12:35 UTC1h 25m

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 N732US page for operator, model, and routing details .

Mode-S A9D44C frequently asked

What is Mode-S code A9D44C?
A9D44C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N732US.
Where is Mode-S A9D44C registered?
Mode-S code A9D44C 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 A9D44C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9D44C, octal 52352114, decimal 11,129,932.
What flights does A9D44C operate?
Mode-S A9D44C has broadcast 20 distinct callsigns, including AAL2085, AAL2044, AAL3275, AAL2504, AAL2141.