Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A5CE02

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N473UA · AIRBUS A-320 · operated by UNITED AIRLINES INC

Hex
A5CE02
Octal
51347002
Decimal
10,866,178
Country
US
Tail
N473UA
Type
A320
Broadcasting now · callsign UAL1451 · 28,975 ft
Flights observed
481
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Current position

A5CE02 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A5CE02 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
UAL442 United Airlines 6 2026-07-18
UAL335 - 6 2026-07-18
UAL1482 - 6 2026-07-14
UAL352 United Airlines 5 2026-06-06
UAL2844 - 5 2026-06-24
UAL2831 - 5 2026-07-15
UAL2386 - 5 2026-07-13
UAL2363 - 5 2026-07-13
UAL1841 United Airlines 5 2026-06-13
UAL1613 United Airlines 5 2026-07-26
UAL1326 United Airlines 5 2026-07-18
UAL817 - 4 2026-07-17
UAL790 - 4 2026-07-10
UAL697 - 4 2026-06-24
UAL489 United Airlines 4 2026-06-02
UAL397 United Airlines 4 2026-07-06
UAL2666 United Airlines 4 2026-05-14
UAL2357 - 4 2026-06-18
UAL2259 United Airlines 4 2026-05-20
UAL1728 United Airlines 4 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2842 SFO → DFW Jul 26, 19:30 UTCJul 26, 22:30 UTC3h 0m
2026-07-26 UAL2317 EWR → AUS Jul 26, 16:30 UTCJul 26, 17:25 UTC55m
2026-07-26 UAL1613 EWR → FLL Jul 26, 01:00 UTCJul 26, 01:30 UTC30m
2026-07-26 UAL1613 EWR → FLL Jul 26, 01:11 UTCJul 26, 01:30 UTC19m
2026-07-25 UAL2262 LAS → SFO Jul 25, 21:40 UTCJul 25, 23:00 UTC1h 20m
2026-07-25 UAL2082 MDT → ORD Jul 25, 17:35 UTCJul 25, 19:35 UTC2h 0m
2026-07-25 UAL2742 LAX → SFO Jul 25, 14:50 UTCJul 25, 16:05 UTC1h 15m
2026-07-25 UAL645 LAX → EWR Jul 25, 00:55 UTCJul 25, 02:05 UTC1h 10m
2026-07-24 UAL1790 EWR → MYR Jul 24, 21:05 UTCJul 24, 23:15 UTC2h 10m
2026-07-24 UAL8162 ORD → MIA Jul 24, 18:40 UTCJul 24, 19:30 UTC50m
2026-07-24 UAL8162 ORD → MIA Jul 24, 18:46 UTCJul 24, 19:26 UTC40m
2026-07-24 UAL336 SFO → EWR Jul 24, 15:15 UTCJul 24, 17:05 UTC1h 50m
2026-07-24 UAL1958 RDU → EWR Jul 24, 01:55 UTCJul 24, 03:15 UTC1h 20m
2026-07-23 UAL454 BOS → EWR Jul 23, 21:30 UTCJul 24, 00:40 UTC3h 10m
2026-07-23 UAL1062 DEN → SFO Jul 23, 16:00 UTCJul 23, 19:00 UTC3h 0m
2026-07-23 UAL538 EWR → BNA Jul 23, 12:25 UTCJul 23, 14:30 UTC2h 5m
2026-07-23 UAL538 EWR → BNA Jul 23, 12:19 UTCJul 23, 14:27 UTC2h 8m
2026-07-23 UAL737 CLE → EWR Jul 23, 02:00 UTCJul 23, 04:00 UTC2h 0m
2026-07-22 UAL454 BOS → EWR Jul 22, 20:55 UTCJul 23, 00:10 UTC3h 15m
2026-07-22 UAL1062 DEN → SFO Jul 22, 15:55 UTCJul 22, 19:00 UTC3h 5m
2026-07-22 UAL702 RDM → SFO Jul 22, 13:10 UTCJul 22, 14:25 UTC1h 15m
2026-07-22 UAL1809 ORD → MCO Jul 22, 04:55 UTCJul 22, 05:25 UTC30m
2026-07-22 UAL2850 JAX → ORD Jul 22, 02:50 UTCJul 22, 03:40 UTC50m
2026-07-22 UAL1613 EWR → FLL Jul 22, 00:45 UTCJul 22, 01:15 UTC30m
2026-07-21 UAL737 BFI → SFO Jul 21, 21:25 UTCJul 21, 23:15 UTC1h 50m
2026-07-21 UAL2192 PHL → ORD Jul 21, 18:00 UTCJul 21, 19:25 UTC1h 25m
2026-07-21 UAL1578 SEA → SFO Jul 21, 14:45 UTCJul 21, 16:35 UTC1h 50m
2026-07-21 UAL8108 SFO → BOS Jul 21, 05:30 UTCJul 21, 06:55 UTC1h 25m
2026-07-20 UAL436 SFO → BWI Jul 20, 23:40 UTCJul 21, 04:25 UTC4h 45m
2026-07-20 UAL2836 - Jul 20, 16:15 UTCJul 20, 20:35 UTC4h 20m
2026-07-20 UAL2097 SFO → EWR Jul 20, 04:10 UTCJul 20, 05:50 UTC1h 40m
2026-07-19 UAL543 IAH → MCO Jul 19, 23:35 UTCJul 20, 01:00 UTC1h 25m
2026-07-19 UAL543 IAH → MCO Jul 19, 23:46 UTCJul 20, 00:56 UTC1h 10m
2026-07-19 UAL2279 PDX → SFO Jul 19, 20:30 UTCJul 19, 22:00 UTC1h 30m
2026-07-19 UAL1301 - Jul 19, 18:00 UTCJul 19, 19:15 UTC1h 15m
2026-07-19 UAL1301 SFO → PDX Jul 19, 18:01 UTCJul 19, 19:10 UTC1h 9m
2026-07-19 UAL1578 SEA → SFO Jul 19, 14:20 UTCJul 19, 16:05 UTC1h 45m
2026-07-19 UAL1007 ORD → ALB Jul 19, 04:05 UTCJul 19, 05:30 UTC1h 25m
2026-07-18 UAL442 DEN → LGA Jul 18, 21:00 UTCJul 19, 00:05 UTC3h 5m
2026-07-18 UAL442 DEN → LGA Jul 18, 20:54 UTCJul 19, 00:05 UTC3h 11m
2026-07-18 UAL1326 SFO → BNA Jul 18, 16:25 UTCJul 18, 19:35 UTC3h 10m
2026-07-18 UAL335 EUG → SFO Jul 18, 13:30 UTCJul 18, 14:45 UTC1h 15m
2026-07-18 UAL8280 IAH → DCA Jul 18, 07:20 UTCJul 18, 08:20 UTC1h 0m
2026-07-18 UAL292 AUS → SFO Jul 18, 02:50 UTCJul 18, 06:00 UTC3h 10m
2026-07-17 UAL1116 BOS → ORD Jul 17, 21:00 UTCJul 18, 00:10 UTC3h 10m
2026-07-17 UAL718 - Jul 17, 13:55 UTCJul 17, 17:50 UTC3h 55m
2026-07-17 UAL817 - Jul 17, 02:34 UTCJul 17, 02:45 UTC10m
2026-07-16 UAL817 - Jul 16, 22:49 UTCJul 17, 01:49 UTC3h 0m
2026-07-16 UAL1613 - Jul 16, 18:59 UTCJul 16, 20:35 UTC1h 35m
2026-07-16 UAL1613 PDX → SFO Jul 16, 18:26 UTCJul 16, 20:32 UTC2h 6m

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 N473UA page for operator, model, and routing details .

Mode-S A5CE02 frequently asked

What is Mode-S code A5CE02?
A5CE02 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N473UA.
Where is Mode-S A5CE02 registered?
Mode-S code A5CE02 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 A5CE02 broadcasting right now?
Yes. Mode-S A5CE02 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5CE02, octal 51347002, decimal 10,866,178.
What flights does A5CE02 operate?
Mode-S A5CE02 has broadcast 20 distinct callsigns, including UAL442, UAL335, UAL1482, UAL352, UAL2844.