Apparatus

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sensors Mode-S transponder

A9653D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N704US · AIRBUS A-319 · operated by UMB BANK N A TRUSTEE

Hex
A9653D
Octal
52262475
Decimal
11,101,501
Country
US
Tail
N704US
Type
A319
No current signal · last broadcast 3h ago
Flights observed
469
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A9653D.

Country allocation

The ICAO 24-bit address A9653D 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
AAL2295 American Airlines 11 2026-05-11
AAL834 - 9 2026-07-12
AAL1747 - 9 2026-07-07
AAL1473 - 9 2026-07-12
AAL2903 - 7 2026-07-13
AAL2131 American Airlines 7 2026-06-19
AAL2706 - 6 2026-06-22
AAL2666 - 6 2026-06-18
AAL2448 American Airlines 6 2026-04-13
AAL2375 - 6 2026-06-15
AAL1740 - 6 2026-07-12
AAL1712 - 6 2026-07-10
AAL3224 American Airlines 5 2026-06-25
AAL1733 - 5 2026-06-19
AAL1519 - 5 2026-07-12
AAL838 - 4 2026-07-09
AAL837 - 4 2026-07-09
AAL534 - 4 2026-06-26
AAL3219 American Airlines 4 2026-04-22
AAL3044 American Airlines 4 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL1951 - Jul 14, 05:05 UTCJul 14, 05:35 UTC30m
2026-07-14 AAL1951 ORD → IND Jul 14, 03:40 UTCJul 14, 04:15 UTC35m
2026-07-13 AAL1844 - Jul 13, 18:30 UTCJul 14, 02:00 UTC7h 30m
2026-07-13 AAL3170 - Jul 13, 14:55 UTCJul 13, 16:35 UTC1h 40m
2026-07-13 AAL3170 - Jul 13, 12:10 UTCJul 13, 13:55 UTC1h 45m
2026-07-13 AAL1315 CLE → ORD Jul 13, 10:10 UTCJul 13, 11:05 UTC55m
2026-07-13 AAL1315 CLE → ORD Jul 13, 10:10 UTCJul 13, 11:00 UTC50m
2026-07-13 AAL1934 ORD → CLE Jul 13, 03:55 UTCJul 13, 04:45 UTC50m
2026-07-13 AAL2903 DCA → ORD Jul 13, 00:15 UTCJul 13, 01:45 UTC1h 30m
2026-07-12 AAL1473 - Jul 12, 22:00 UTCJul 12, 22:40 UTC40m
2026-07-12 AAL1473 PIT → DCA Jul 12, 21:57 UTCJul 12, 22:36 UTC39m
2026-07-12 AAL834 - Jul 12, 18:25 UTCJul 12, 20:45 UTC2h 20m
2026-07-12 AAL834 MIA → PIT Jul 12, 18:23 UTCJul 12, 20:44 UTC2h 21m
2026-07-12 AAL1532 - Jul 12, 16:01 UTCJul 12, 16:25 UTC25m
2026-07-12 AAL1519 - Jul 12, 12:50 UTCJul 12, 13:10 UTC20m
2026-07-12 AAL1740 - Jul 12, 11:01 UTCJul 12, 11:35 UTC35m
2026-07-12 AAL3188 - Jul 12, 02:35 UTCJul 12, 03:20 UTC45m
2026-07-11 AAL1572 - Jul 11, 22:20 UTCJul 12, 01:10 UTC2h 50m
2026-07-11 AAL1572 - Jul 11, 18:10 UTCJul 11, 20:50 UTC2h 40m
2026-07-11 AAL2168 MSY → MIA Jul 11, 15:10 UTCJul 11, 16:40 UTC1h 30m
2026-07-11 AAL2168 - Jul 11, 12:10 UTCJul 11, 13:50 UTC1h 40m
2026-07-11 AAL3215 TPA → MIA Jul 11, 10:15 UTCJul 11, 10:55 UTC40m
2026-07-11 AAL1921 MIA → TPA Jul 11, 02:10 UTCJul 11, 02:50 UTC40m
2026-07-10 AAL1572 - Jul 10, 22:15 UTCJul 11, 00:55 UTC2h 40m
2026-07-10 AAL1572 - Jul 10, 18:00 UTCJul 10, 20:45 UTC2h 45m
2026-07-10 AAL1712 MCO → MIA Jul 10, 15:30 UTCJul 10, 16:10 UTC40m
2026-07-10 AAL1712 - Jul 10, 13:40 UTCJul 10, 14:15 UTC35m
2026-07-10 AAL2730 - Jul 10, 10:20 UTCJul 10, 12:00 UTC1h 40m
2026-07-10 AAL2716 - Jul 10, 01:55 UTCJul 10, 03:35 UTC1h 40m
2026-07-10 AAL2716 MIA → TYS Jul 10, 01:50 UTCJul 10, 03:29 UTC1h 39m
2026-07-09 AAL2147 MCO → MIA Jul 9, 23:55 UTCJul 10, 00:35 UTC40m
2026-07-09 AAL2147 MCO → MIA Jul 9, 23:55 UTCJul 10, 00:34 UTC39m
2026-07-09 AAL2147 - Jul 9, 21:50 UTCJul 9, 22:25 UTC35m
2026-07-09 AAL838 - Jul 9, 19:10 UTCJul 9, 19:40 UTC30m
2026-07-09 AAL838 HAV → MIA Jul 9, 18:53 UTCJul 9, 19:37 UTC44m
2026-07-09 AAL837 - Jul 9, 16:50 UTCJul 9, 17:15 UTC25m
2026-07-09 AAL837 MIA → HAV Jul 9, 16:45 UTCJul 9, 17:45 UTC1h 0m
2026-07-09 AAL2240 MCO → MIA Jul 9, 14:20 UTCJul 9, 15:00 UTC40m
2026-07-09 AAL592 DCA → MCO Jul 9, 10:40 UTCJul 9, 12:25 UTC1h 45m
2026-07-08 AAL2355 - Jul 8, 22:10 UTCJul 8, 23:30 UTC1h 20m
2026-07-08 AAL2355 - Jul 8, 19:50 UTCJul 8, 20:55 UTC1h 5m
2026-07-08 AAL2631 - Jul 8, 16:45 UTCJul 8, 18:25 UTC1h 40m
2026-07-08 AAL2631 NAS → DCA Jul 8, 16:19 UTCJul 8, 18:24 UTC2h 5m
2026-07-08 AAL2631 - Jul 8, 12:55 UTCJul 8, 14:55 UTC2h 0m
2026-07-08 AAL2985 - Jul 8, 10:10 UTCJul 8, 10:55 UTC45m
2026-07-08 AAL2985 RDU → DCA Jul 8, 10:08 UTCJul 8, 10:50 UTC42m
2026-07-08 AAL2167 - Jul 8, 02:25 UTCJul 8, 03:55 UTC1h 30m
2026-07-08 AAL2167 ORD → RDU Jul 8, 02:24 UTCJul 8, 03:54 UTC1h 30m
2026-07-07 AAL3317 - Jul 7, 22:50 UTCJul 8, 01:05 UTC2h 15m
2026-07-07 AAL3317 - Jul 7, 19:00 UTCJul 7, 21:00 UTC2h 0m

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 N704US page for operator, model, and routing details .

Mode-S A9653D frequently asked

What is Mode-S code A9653D?
A9653D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N704US.
Where is Mode-S A9653D registered?
Mode-S code A9653D 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 A9653D broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9653D, octal 52262475, decimal 11,101,501.
What flights does A9653D operate?
Mode-S A9653D has broadcast 20 distinct callsigns, including AAL2295, AAL834, AAL1747, AAL1473, AAL2903.