Apparatus

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sensors Mode-S transponder

AAEEC5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N803UA · AIRBUS A-319 · operated by UNITED AIRLINES INC

Hex
AAEEC5
Octal
52567305
Decimal
11,202,245
Country
US
Tail
N803UA
Type
A319
No current signal · last broadcast Jul 26, 18:55 UTC
Flights observed
483
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:55 UTC

Last known position

Most recent position reported by Mode-S AAEEC5.

Country allocation

The ICAO 24-bit address AAEEC5 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
UAL456 - 7 2026-07-12
UAL549 United Airlines 6 2026-07-20
UAL429 United Airlines 6 2026-06-11
UAL2027 - 6 2026-07-20
UAL1300 United Airlines 6 2026-05-21
UAL1085 United Airlines 6 2026-06-11
UAL625 - 5 2026-07-16
UAL285 United Airlines 5 2026-05-19
UAL2728 United Airlines 5 2026-06-05
UAL2407 United Airlines 5 2026-04-24
UAL1586 - 5 2026-06-30
UAL1439 - 5 2026-07-06
UAL822 United Airlines 4 2026-05-01
UAL793 - 4 2026-07-10
UAL581 United Airlines 4 2026-05-05
UAL313 - 4 2026-07-15
UAL2180 - 4 2026-07-11
UAL1899 - 4 2026-06-29
UAL1871 - 4 2026-06-30
UAL1821 United Airlines 4 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL3883 ORD → MLB Jul 26, 16:30 UTCJul 26, 18:45 UTC2h 15m
2026-07-22 UAL1305 EWR → RDU Jul 22, 00:10 UTCJul 22, 02:35 UTC2h 25m
2026-07-21 UAL1741 MSY → EWR Jul 21, 19:50 UTCJul 21, 20:45 UTC55m
2026-07-21 UAL1402 DEN → CVG Jul 21, 17:30 UTCJul 21, 18:25 UTC55m
2026-07-21 UAL1521 IAD → MSY Jul 21, 14:50 UTCJul 21, 16:15 UTC1h 25m
2026-07-20 UAL549 BOS → ORD Jul 20, 23:50 UTCJul 21, 01:10 UTC1h 20m
2026-07-20 UAL2027 - Jul 20, 22:30 UTCJul 20, 22:35 UTC5m
2026-07-20 UAL2027 GTF → DEN Jul 20, 20:54 UTCJul 20, 22:14 UTC1h 20m
2026-07-20 UAL2027 DEN → DEN Jul 20, 17:55 UTCJul 20, 22:35 UTC4h 40m
2026-07-20 UAL1235 - Jul 20, 13:10 UTCJul 20, 15:45 UTC2h 35m
2026-07-20 UAL1228 CVG → ORD Jul 20, 00:29 UTCJul 20, 02:33 UTC2h 4m
2026-07-20 UAL1228 CVG → ORD Jul 20, 00:25 UTCJul 20, 02:35 UTC2h 10m
2026-07-19 UAL498 - Jul 19, 20:45 UTCJul 19, 22:35 UTC1h 50m
2026-07-19 UAL1112 BOS → DEN Jul 19, 17:25 UTCJul 19, 19:15 UTC1h 50m
2026-07-19 UAL1521 IAD → MSY Jul 19, 14:35 UTCJul 19, 15:55 UTC1h 20m
2026-07-19 UAL549 DEN → DSM Jul 19, 00:10 UTCJul 19, 01:25 UTC1h 15m
2026-07-18 UAL696 - Jul 18, 20:00 UTCJul 18, 21:55 UTC1h 55m
2026-07-18 UAL1836 DEN → MKE Jul 18, 16:30 UTCJul 18, 18:30 UTC2h 0m
2026-07-18 UAL2173 DEN → DEN Jul 18, 03:20 UTCJul 18, 04:20 UTC1h 0m
2026-07-17 UAL439 EWR → GRR Jul 17, 23:45 UTCJul 18, 01:25 UTC1h 40m
2026-07-17 UAL1711 - Jul 17, 21:34 UTCJul 17, 22:05 UTC30m
2026-07-17 UAL1091 - Jul 17, 18:00 UTCJul 17, 19:55 UTC1h 55m
2026-07-17 UAL1060 - Jul 17, 14:39 UTCJul 17, 16:29 UTC1h 50m
2026-07-17 UAL1060 IAH → MEX Jul 17, 14:46 UTCJul 17, 16:28 UTC1h 42m
2026-07-16 UAL1678 - Jul 16, 23:40 UTCJul 17, 02:20 UTC2h 40m
2026-07-16 UAL625 - Jul 16, 20:00 UTCJul 16, 22:40 UTC2h 40m
2026-07-16 UAL425C - Jul 16, 15:49 UTCJul 16, 17:14 UTC1h 25m
2026-07-16 UAL425C ATL → IAH Jul 16, 15:55 UTCJul 16, 17:26 UTC1h 31m
2026-07-16 UAL1030 - Jul 16, 12:55 UTCJul 16, 14:35 UTC1h 40m
2026-07-16 UAL2744 - Jul 16, 10:20 UTCJul 16, 11:10 UTC50m
2026-07-15 UAL2140 - Jul 15, 23:50 UTCJul 16, 00:40 UTC50m
2026-07-15 UAL313 - Jul 15, 20:55 UTCJul 15, 21:55 UTC1h 0m
2026-07-15 UAL2468 - Jul 15, 17:05 UTCJul 15, 19:35 UTC2h 30m
2026-07-15 UAL2233 - Jul 15, 11:40 UTCJul 15, 15:10 UTC3h 30m
2026-07-15 UAL2198 - Jul 15, 03:00 UTCJul 15, 03:40 UTC40m
2026-07-14 UAL2376 - Jul 14, 23:20 UTCJul 15, 01:15 UTC1h 55m
2026-07-14 UAL1211 - Jul 14, 20:00 UTCJul 14, 21:35 UTC1h 35m
2026-07-14 UAL2190 - Jul 14, 15:10 UTCJul 14, 18:10 UTC3h 0m
2026-07-14 UAL482 ORD → DCA Jul 14, 12:15 UTCJul 14, 13:45 UTC1h 30m
2026-07-14 UAL739 CBF → ORD Jul 14, 00:10 UTCJul 14, 01:20 UTC1h 10m
2026-07-13 UAL247 - Jul 13, 22:05 UTCJul 13, 23:05 UTC1h 0m
2026-07-13 UAL247 ORD → OMA Jul 13, 22:14 UTCJul 13, 23:02 UTC48m
2026-07-13 UAL745 ATL → ORD Jul 13, 18:25 UTCJul 13, 19:55 UTC1h 30m
2026-07-13 UAL530 - Jul 13, 14:55 UTCJul 13, 16:25 UTC1h 30m
2026-07-13 UAL2638 DCA → ORD Jul 13, 11:25 UTCJul 13, 12:55 UTC1h 30m
2026-07-12 UAL456 ORD → DCA Jul 12, 22:35 UTCJul 13, 00:01 UTC1h 25m
2026-07-12 UAL8156 - Jul 12, 17:20 UTCJul 12, 18:05 UTC45m
2026-07-12 UAL8156 DSM → ORD Jul 12, 17:35 UTCJul 12, 18:21 UTC46m
2026-07-12 UAL1839 ORD → DSM Jul 12, 03:10 UTCJul 12, 03:55 UTC45m
2026-07-12 UAL303 - Jul 12, 00:35 UTCJul 12, 01:35 UTC1h 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 N803UA page for operator, model, and routing details .

Mode-S AAEEC5 frequently asked

What is Mode-S code AAEEC5?
AAEEC5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N803UA.
Where is Mode-S AAEEC5 registered?
Mode-S code AAEEC5 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 AAEEC5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAEEC5, octal 52567305, decimal 11,202,245.
What flights does AAEEC5 operate?
Mode-S AAEEC5 has broadcast 20 distinct callsigns, including UAL456, UAL549, UAL429, UAL2027, UAL1300.