Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A52898

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N431UA · AIRBUS A-320 · operated by UNITED AIRLINES INC

Hex
A52898
Octal
51224230
Decimal
10,823,832
Country
US
Tail
N431UA
Type
A320
Broadcasting now · callsign UAL2290 · 15,000 ft
Flights observed
481
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

A52898 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A52898 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
UAL790 United Airlines 11 2026-07-21
UAL739 - 7 2026-07-04
UAL817 United Airlines 6 2026-07-23
UAL626 - 6 2026-06-22
UAL1220 - 6 2026-06-24
UAL718 United Airlines 5 2026-07-23
UAL247 United Airlines 5 2026-07-03
UAL2302 - 5 2026-06-24
UAL1942 - 5 2026-06-23
UAL1838 United Airlines 5 2026-07-26
UAL1088 United Airlines 5 2026-07-26
UAL724 - 4 2026-06-19
UAL697 United Airlines 4 2026-04-24
UAL561 - 4 2026-07-15
UAL528 United Airlines 4 2026-05-10
UAL355 - 4 2026-06-25
UAL303 - 4 2026-07-14
UAL2787 - 4 2026-07-05
UAL2478 United Airlines 4 2026-07-21
UAL2447 - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1838 MEX → IAH Jul 26, 20:40 UTCJul 26, 22:00 UTC1h 20m
2026-07-26 UAL1088 IAH → MEX Jul 26, 17:05 UTCJul 26, 18:55 UTC1h 50m
2026-07-26 UAL1088 IAH → MEX Jul 26, 17:09 UTCJul 26, 18:51 UTC1h 42m
2026-07-26 UAL2662 DEN → PDX Jul 26, 13:35 UTCJul 26, 15:20 UTC1h 45m
2026-07-25 UAL692 SEA → ORD Jul 25, 21:45 UTCJul 26, 00:30 UTC2h 45m
2026-07-25 UAL1613 EWR → FLL Jul 25, 18:50 UTCJul 25, 20:20 UTC1h 30m
2026-07-25 UAL1613 EWR → FLL Jul 25, 18:26 UTCJul 25, 20:13 UTC1h 47m
2026-07-25 UAL2265 IAH → SFO Jul 25, 15:45 UTCJul 25, 16:55 UTC1h 10m
2026-07-25 UAL292 EWR → SEA Jul 25, 02:40 UTCJul 25, 06:05 UTC3h 25m
2026-07-24 UAL1116 BOS → ORD Jul 24, 20:55 UTCJul 25, 00:20 UTC3h 25m
2026-07-24 UAL2386 EWR → TPA Jul 24, 18:25 UTCJul 24, 19:25 UTC1h 0m
2026-07-24 UAL2363 PHL → ORD Jul 24, 15:55 UTCJul 24, 16:55 UTC1h 0m
2026-07-24 UAL702 EWR → IAH Jul 24, 13:10 UTCJul 24, 14:20 UTC1h 10m
2026-07-24 UAL1809 ORD → MCO Jul 24, 06:55 UTCJul 24, 07:50 UTC55m
2026-07-24 UAL292 EWR → SEA Jul 24, 02:25 UTCJul 24, 05:35 UTC3h 10m
2026-07-23 UAL1116 BOS → ORD Jul 23, 21:40 UTCJul 24, 00:55 UTC3h 15m
2026-07-23 UAL718 MEX → SFO Jul 23, 14:00 UTCJul 23, 17:50 UTC3h 50m
2026-07-23 UAL817 DEL → EWR Jul 23, 02:35 UTCJul 23, 02:40 UTC5m
2026-07-22 UAL817 DEL → EWR Jul 22, 22:45 UTCJul 23, 00:50 UTC2h 5m
2026-07-22 UAL1578 - Jul 22, 19:40 UTCJul 22, 21:25 UTC1h 45m
2026-07-22 UAL1577 RNO → SFO Jul 22, 01:52 UTCJul 22, 03:06 UTC1h 14m
2026-07-22 UAL1577 RNO → SFO Jul 22, 01:40 UTCJul 22, 03:05 UTC1h 25m
2026-07-21 UAL442 DEN → LGA Jul 21, 21:00 UTCJul 22, 00:10 UTC3h 10m
2026-07-21 UAL1326 SFO → BNA Jul 21, 16:30 UTCJul 21, 19:40 UTC3h 10m
2026-07-21 UAL790 DEN → AUS Jul 21, 11:15 UTCJul 21, 14:10 UTC2h 55m
2026-07-21 UAL2478 SAN → ORD Jul 21, 03:20 UTCJul 21, 06:25 UTC3h 5m
2026-07-20 UAL623 LGA → ORD Jul 20, 18:10 UTCJul 21, 02:00 UTC7h 49m
2026-07-20 UAL704 IAH → EWR Jul 20, 14:45 UTCJul 20, 16:25 UTC1h 40m
2026-07-20 UAL1269 LGA → IAH Jul 20, 11:45 UTCJul 20, 13:10 UTC1h 25m
2026-07-20 UAL1476 DEN → EUG Jul 20, 00:05 UTCJul 20, 01:20 UTC1h 15m
2026-07-19 UAL2207 ORD → PIT Jul 19, 21:10 UTCJul 19, 22:10 UTC1h 0m
2026-07-19 UAL1215 SAV → ORD Jul 19, 15:40 UTCJul 19, 17:40 UTC2h 0m
2026-07-19 UAL2622 LAX → ORD Jul 19, 12:25 UTCJul 19, 14:05 UTC1h 40m
2026-07-19 UAL2622 LAX → ORD Jul 19, 12:33 UTCJul 19, 14:07 UTC1h 34m
2026-07-19 UAL1476 DEN → EUG Jul 19, 04:00 UTCJul 19, 05:05 UTC1h 5m
2026-07-18 UAL2207 ORD → PIT Jul 18, 21:40 UTCJul 18, 22:40 UTC1h 0m
2026-07-18 UAL1410 IAH → PHL Jul 18, 17:40 UTCJul 18, 18:35 UTC55m
2026-07-18 UAL1410 IAH → PHL Jul 18, 17:42 UTCJul 18, 18:19 UTC37m
2026-07-18 UAL1803 CHS → EWR Jul 18, 15:40 UTCJul 18, 16:25 UTC45m
2026-07-18 UAL2225 SCH → ORD Jul 18, 10:25 UTCJul 18, 12:30 UTC2h 5m
2026-07-18 UAL8192 ORD → YVR Jul 18, 01:10 UTCJul 18, 02:40 UTC1h 30m
2026-07-17 UAL3921 - Jul 17, 21:30 UTCJul 17, 23:14 UTC1h 45m
2026-07-16 UAL1583 ORD → RIC Jul 16, 00:20 UTCJul 16, 01:45 UTC1h 25m
2026-07-15 UAL2792 - Jul 15, 21:35 UTCJul 15, 22:30 UTC55m
2026-07-15 UAL561 - Jul 15, 19:25 UTCJul 15, 20:20 UTC55m
2026-07-15 UAL1114 DFW → ORD Jul 15, 15:15 UTCJul 15, 17:15 UTC2h 0m
2026-07-15 UAL1114 DFW → ORD Jul 15, 15:06 UTCJul 15, 17:02 UTC1h 56m
2026-07-15 UAL8195 - Jul 15, 01:55 UTCJul 15, 03:40 UTC1h 45m
2026-07-14 UAL2211 - Jul 14, 21:20 UTCJul 14, 23:20 UTC1h 59m
2026-07-14 UAL2427 - Jul 14, 16:00 UTCJul 14, 17:55 UTC1h 55m

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 N431UA page for operator, model, and routing details .

Mode-S A52898 frequently asked

What is Mode-S code A52898?
A52898 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N431UA.
Where is Mode-S A52898 registered?
Mode-S code A52898 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 A52898 broadcasting right now?
Yes. Mode-S A52898 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A52898, octal 51224230, decimal 10,823,832.
What flights does A52898 operate?
Mode-S A52898 has broadcast 20 distinct callsigns, including UAL790, UAL739, UAL817, UAL626, UAL1220.