Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA55EE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N765US · AIRBUS A-319 · operated by UMB BANK NA TRUSTEE

Hex
AA55EE
Octal
52452756
Decimal
11,163,118
Country
US
Tail
N765US
Type
A319
No current signal · last broadcast Jul 26, 20:35 UTC
Flights observed
582
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:35 UTC

Last known position

Most recent position reported by Mode-S AA55EE.

Country allocation

The ICAO 24-bit address AA55EE 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
AAL2276 American Airlines 11 2026-05-07
AAL1712 - 8 2026-06-30
AAL340 American Airlines 7 2026-07-24
AAL1556 American Airlines 7 2026-05-29
AAL2720 - 6 2026-07-21
AAL2403 - 6 2026-07-05
AAL2347 American Airlines 6 2026-05-29
AAL2296 - 6 2026-07-08
AAL2198 American Airlines 6 2026-06-11
AAL512 - 5 2026-06-24
AAL3299 American Airlines 5 2026-05-08
AAL2717 - 5 2026-07-09
AAL2454 American Airlines 5 2026-07-24
AAL2353 American Airlines 5 2026-05-16
AAL2324 American Airlines 5 2026-07-24
AAL1913 American Airlines 5 2026-06-23
AAL3170 American Airlines 4 2026-06-09
AAL2894 - 4 2026-06-24
AAL2884 - 4 2026-07-18
AAL2227 - 4 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1927 BDL → CLT Jul 26, 17:30 UTCJul 26, 20:30 UTC3h 0m
2026-07-26 AAL1927 BDL → CLT Jul 26, 13:25 UTCJul 26, 16:15 UTC2h 50m
2026-07-26 AAL1248 EWR → DFW Jul 26, 10:25 UTCJul 26, 11:20 UTC55m
2026-07-26 AAL2167 PVD → ORD Jul 26, 02:35 UTCJul 26, 04:05 UTC1h 30m
2026-07-26 AAL2167 PVD → ORD Jul 26, 02:32 UTCJul 26, 04:05 UTC1h 33m
2026-07-25 AAL3317 DFW → LAX Jul 25, 23:00 UTCJul 26, 01:15 UTC2h 15m
2026-07-25 AAL3317 DFW → LAX Jul 25, 19:05 UTCJul 25, 20:55 UTC1h 50m
2026-07-25 AAL1747 STT → ORD Jul 25, 15:20 UTCJul 25, 17:20 UTC2h 0m
2026-07-25 AAL1747 STT → ORD Jul 25, 11:50 UTCJul 25, 13:55 UTC2h 5m
2026-07-25 AAL2903 DCA → ORD Jul 25, 00:40 UTCJul 25, 02:05 UTC1h 25m
2026-07-24 AAL2454 MSY → PHL Jul 24, 21:35 UTCJul 24, 23:45 UTC2h 10m
2026-07-24 AAL2454 MSY → PHL Jul 24, 18:15 UTCJul 24, 20:10 UTC1h 55m
2026-07-24 AAL2398 DCA → BGR Jul 24, 15:30 UTCJul 24, 16:55 UTC1h 25m
2026-07-24 AAL2324 PHL → ORD Jul 24, 10:59 UTCJul 24, 13:25 UTC2h 26m
2026-07-24 AAL2324 PHL → ORD Jul 24, 11:00 UTCJul 24, 13:30 UTC2h 30m
2026-07-24 AAL340 LAX → MIA Jul 24, 00:50 UTCJul 24, 02:50 UTC2h 0m
2026-07-24 AAL340 LAX → MIA Jul 24, 00:44 UTCJul 24, 02:48 UTC2h 4m
2026-07-23 AAL1341 - Jul 23, 20:40 UTCJul 23, 23:10 UTC2h 30m
2026-07-23 AAL1341 - Jul 23, 16:40 UTCJul 23, 19:25 UTC2h 45m
2026-07-23 AAL2324 PHL → ORD Jul 23, 11:05 UTCJul 23, 13:35 UTC2h 30m
2026-07-23 AAL340 LAX → MIA Jul 23, 03:05 UTCJul 23, 04:55 UTC1h 50m
2026-07-23 AAL340 LAX → MIA Jul 23, 03:01 UTCJul 23, 04:52 UTC1h 51m
2026-07-22 AAL470 DFW → PHL Jul 22, 20:15 UTCJul 22, 22:10 UTC1h 55m
2026-07-22 AAL470 DFW → PHL Jul 22, 20:10 UTCJul 22, 22:05 UTC1h 55m
2026-07-22 AAL3221 BOS → CLT Jul 22, 16:50 UTCJul 22, 18:30 UTC1h 40m
2026-07-22 AAL3221 BOS → CLT Jul 22, 14:00 UTCJul 22, 15:45 UTC1h 45m
2026-07-21 AAL2720 - Jul 21, 16:30 UTCJul 21, 18:40 UTC2h 10m
2026-07-21 AAL2720 STL → PHL Jul 21, 16:27 UTCJul 21, 18:35 UTC2h 8m
2026-07-21 AAL2720 PHL → STL Jul 21, 13:20 UTCJul 21, 15:20 UTC2h 0m
2026-07-21 AAL2536 BOS → PHL Jul 21, 10:40 UTCJul 21, 12:00 UTC1h 20m
2026-07-21 AAL340 LAX → MIA Jul 21, 02:30 UTCJul 21, 04:25 UTC1h 55m
2026-07-21 AAL340 LAX → MIA Jul 21, 02:28 UTCJul 21, 04:25 UTC1h 57m
2026-07-20 AAL1570 ATL → PHL Jul 20, 23:05 UTCJul 21, 00:35 UTC1h 29m
2026-07-20 AAL1505 PHL → BNA Jul 20, 20:10 UTCJul 20, 21:45 UTC1h 35m
2026-07-20 AAL1505 PHL → BNA Jul 20, 20:09 UTCJul 20, 21:41 UTC1h 32m
2026-07-20 AAL2365 - Jul 20, 17:30 UTCJul 20, 18:35 UTC1h 5m
2026-07-20 AAL2365 - Jul 20, 15:35 UTCJul 20, 16:30 UTC55m
2026-07-20 AAL2809 BNA → PHL Jul 20, 13:00 UTCJul 20, 14:35 UTC1h 35m
2026-07-20 AAL2277 PHL → BNA Jul 20, 02:35 UTCJul 20, 04:05 UTC1h 30m
2026-07-19 AAL1590 ATL → PHL Jul 19, 23:28 UTCJul 20, 01:04 UTC1h 36m
2026-07-19 AAL1590 ATL → PHL Jul 19, 23:30 UTCJul 20, 01:05 UTC1h 35m
2026-07-19 AAL2983 PHL → ATL Jul 19, 20:30 UTCJul 19, 22:05 UTC1h 35m
2026-07-19 AAL2983 PHL → ATL Jul 19, 20:27 UTCJul 19, 22:04 UTC1h 37m
2026-07-19 AAL2720 - Jul 19, 16:30 UTCJul 19, 18:20 UTC1h 50m
2026-07-19 AAL2720 STL → PHL Jul 19, 16:28 UTCJul 19, 18:21 UTC1h 53m
2026-07-19 AAL2720 PHL → STL Jul 19, 13:30 UTCJul 19, 15:25 UTC1h 55m
2026-07-18 AAL1925 - Jul 18, 22:45 UTCJul 19, 01:50 UTC3h 5m
2026-07-18 AAL640 LGA → DCA Jul 18, 19:25 UTCJul 18, 21:40 UTC2h 15m
2026-07-18 AAL3142 - Jul 18, 17:30 UTCJul 18, 17:55 UTC25m
2026-07-18 AAL3142 - Jul 18, 15:50 UTCJul 18, 16:15 UTC25m

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 N765US page for operator, model, and routing details .

Mode-S AA55EE frequently asked

What is Mode-S code AA55EE?
AA55EE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N765US.
Where is Mode-S AA55EE registered?
Mode-S code AA55EE 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 AA55EE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA55EE, octal 52452756, decimal 11,163,118.
What flights does AA55EE operate?
Mode-S AA55EE has broadcast 20 distinct callsigns, including AAL2276, AAL1712, AAL340, AAL1556, AAL2720.