Apparatus

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sensors Mode-S transponder

AA59A5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N766US · AIRBUS A-319 · operated by UMB BANK NA TRUSTEE

Hex
AA59A5
Octal
52454645
Decimal
11,164,069
Country
US
Tail
N766US
Type
A319
Broadcasting now · callsign AAL1635 · 12,400 ft
Flights observed
514
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AA59A5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA59A5 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
AAL869 American Airlines 10 2026-06-08
AAL620 - 10 2026-06-23
AAL2757 American Airlines 7 2026-05-18
AAL804 - 6 2026-06-26
AAL3076 American Airlines 6 2026-05-18
AAL1657 - 6 2026-06-20
AAL939 American Airlines 5 2026-05-12
AAL865 American Airlines 5 2026-05-10
AAL647 - 5 2026-06-27
AAL3146 American Airlines 5 2026-05-19
AAL2632 American Airlines 5 2026-05-13
AAL2375 - 5 2026-06-21
AAL2349 - 5 2026-07-13
AAL2328 American Airlines 5 2026-05-23
AAL2126 - 5 2026-07-04
AAL2029 American Airlines 5 2026-05-20
AAL868 American Airlines 4 2026-06-08
AAL644 American Airlines 4 2026-06-06
AAL470 - 4 2026-07-03
AAL3299 - 4 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL1635 - Jul 14, 12:30 UTCJul 14, 13:15 UTC45m
2026-07-13 AAL2220 - Jul 13, 18:55 UTCJul 13, 21:10 UTC2h 15m
2026-07-13 AAL2220 - Jul 13, 15:45 UTCJul 13, 17:55 UTC2h 10m
2026-07-13 AAL2349 - Jul 13, 13:35 UTCJul 13, 14:25 UTC50m
2026-07-13 AAL2349 - Jul 13, 11:15 UTCJul 13, 12:05 UTC50m
2026-07-13 AAL2493 - Jul 13, 09:15 UTCJul 13, 09:45 UTC30m
2026-07-13 AAL1017 - Jul 13, 03:55 UTCJul 13, 04:30 UTC35m
2026-07-13 AAL3299 - Jul 13, 00:05 UTCJul 13, 02:05 UTC2h 0m
2026-07-12 AAL3299 - Jul 12, 19:45 UTCJul 12, 22:00 UTC2h 15m
2026-07-11 AAL1942 - Jul 11, 23:00 UTCJul 12, 00:20 UTC1h 20m
2026-07-11 AAL1942 - Jul 11, 20:05 UTCJul 11, 21:30 UTC1h 25m
2026-07-11 AAL2808 - Jul 11, 16:30 UTCJul 11, 18:10 UTC1h 40m
2026-07-11 AAL2808 XNA → CLT Jul 11, 16:29 UTCJul 11, 18:08 UTC1h 39m
2026-07-11 AAL2808 - Jul 11, 13:15 UTCJul 11, 15:00 UTC1h 45m
2026-07-11 AAL858 - Jul 11, 10:20 UTCJul 11, 12:00 UTC1h 40m
2026-07-11 AAL2761 - Jul 11, 06:30 UTCJul 11, 07:30 UTC1h 0m
2026-07-11 AAL2761 SGF → STL Jul 11, 05:17 UTCJul 11, 07:36 UTC2h 19m
2026-07-10 AAL2761 - Jul 10, 23:50 UTCJul 11, 01:50 UTC2h 0m
2026-07-10 AAL807 - Jul 10, 20:10 UTCJul 10, 22:10 UTC2h 0m
2026-07-10 AAL810 - Jul 10, 17:25 UTCJul 10, 19:05 UTC1h 40m
2026-07-10 AAL3194 STL → DFW Jul 10, 13:55 UTCJul 10, 15:15 UTC1h 20m
2026-07-10 AAL3028 DCA → STL Jul 10, 04:00 UTCJul 10, 05:45 UTC1h 45m
2026-07-10 AAL2347 - Jul 10, 01:55 UTCJul 10, 03:05 UTC1h 10m
2026-07-09 AAL2347 DCA → ALB Jul 9, 23:35 UTCJul 10, 00:35 UTC1h 0m
2026-07-09 AAL1556 BOS → DCA Jul 9, 15:05 UTCJul 9, 16:20 UTC1h 15m
2026-07-09 AAL1556 BOS → DCA Jul 9, 15:04 UTCJul 9, 16:15 UTC1h 11m
2026-07-09 AAL1556 ADW → BOS Jul 9, 12:55 UTCJul 9, 14:00 UTC1h 5m
2026-07-09 AAL2159 BOS → DCA Jul 9, 10:10 UTCJul 9, 11:15 UTC1h 5m
2026-07-09 AAL1874 - Jul 9, 02:40 UTCJul 9, 03:55 UTC1h 15m
2026-07-09 AAL1874 PHL → BOS Jul 9, 02:39 UTCJul 9, 03:36 UTC57m
2026-07-08 AAL2875 - Jul 8, 22:25 UTCJul 9, 00:35 UTC2h 10m
2026-07-08 AAL2875 - Jul 8, 18:45 UTCJul 8, 20:55 UTC2h 10m
2026-07-08 AAL2875 PHL → PHL Jul 8, 17:50 UTCJul 8, 18:00 UTC10m
2026-07-08 AAL1846 - Jul 8, 15:45 UTCJul 8, 16:40 UTC55m
2026-07-08 AAL1846 - Jul 8, 13:45 UTCJul 8, 14:45 UTC1h 0m
2026-07-07 AAL2714 - Jul 7, 00:15 UTCJul 7, 02:00 UTC1h 45m
2026-07-06 AAL2714 PHL → STL Jul 6, 20:50 UTCJul 6, 22:50 UTC2h 0m
2026-07-06 AAL2403 - Jul 6, 18:35 UTCJul 6, 19:30 UTC55m
2026-07-06 AAL2403 PHL → RDU Jul 6, 16:10 UTCJul 6, 17:40 UTC1h 30m
2026-07-06 AAL1248 - Jul 6, 13:35 UTCJul 6, 14:30 UTC55m
2026-07-06 AAL2167 ORD → RDU Jul 6, 03:30 UTCJul 6, 04:55 UTC1h 25m
2026-07-06 AAL2167 ORD → RDU Jul 6, 03:26 UTCJul 6, 05:05 UTC1h 39m
2026-07-05 AAL1341 - Jul 5, 21:05 UTCJul 5, 22:50 UTC1h 45m
2026-07-05 AAL1341 - Jul 5, 20:20 UTCJul 5, 20:30 UTC10m
2026-07-05 AAL1341 ORD → ABQ Jul 5, 16:50 UTCJul 5, 19:20 UTC2h 30m
2026-07-05 AAL2324 BGR → ORD Jul 5, 12:40 UTCJul 5, 15:10 UTC2h 30m
2026-07-05 AAL340 ORD → BGR Jul 5, 02:44 UTCJul 5, 04:35 UTC1h 51m
2026-07-05 AAL340 ORD → BGR Jul 5, 02:45 UTCJul 5, 04:40 UTC1h 55m
2026-07-04 AAL2126 - Jul 4, 23:30 UTCJul 5, 01:00 UTC1h 30m
2026-07-04 AAL2126 IND → ORD Jul 4, 22:53 UTCJul 5, 01:14 UTC2h 21m

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 N766US page for operator, model, and routing details .

Mode-S AA59A5 frequently asked

What is Mode-S code AA59A5?
AA59A5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N766US.
Where is Mode-S AA59A5 registered?
Mode-S code AA59A5 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 AA59A5 broadcasting right now?
Yes. Mode-S AA59A5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA59A5, octal 52454645, decimal 11,164,069.
What flights does AA59A5 operate?
Mode-S AA59A5 has broadcast 20 distinct callsigns, including AAL869, AAL620, AAL2757, AAL804, AAL3076.