Apparatus

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sensors Mode-S transponder

A0B889

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14563 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A0B889
Octal
50134211
Decimal
10,533,001
Country
US
Tail
N14563
Type
A21N
No current signal · last broadcast Jul 26, 01:35 UTC
Flights observed
438
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 01:35 UTC

Last known position

Most recent position reported by Mode-S A0B889.

Country allocation

The ICAO 24-bit address A0B889 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
UAL558 United Airlines 8 2026-05-28
UAL2487 - 7 2026-06-26
UAL660 - 6 2026-06-30
UAL2297 United Airlines 6 2026-05-28
UAL1023 - 6 2026-06-15
UAL675 - 5 2026-07-16
UAL2683 - 5 2026-07-13
UAL2494 - 5 2026-07-07
UAL1565 - 5 2026-06-30
UAL8120 United Airlines 4 2026-05-01
UAL695 - 4 2026-07-15
UAL587 - 4 2026-07-08
UAL526 - 4 2026-07-14
UAL2865 United Airlines 4 2026-05-06
UAL2618 United Airlines 4 2026-04-22
UAL2455 United Airlines 4 2026-06-04
UAL2446 United Airlines 4 2026-05-30
UAL2339 United Airlines 4 2026-04-13
UAL212 - 4 2026-07-14
UAL2088 United Airlines 4 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UAL1382 PHX → EWR Jul 25, 23:20 UTCJul 26, 01:30 UTC2h 10m
2026-07-25 UAL1382 PHX → EWR Jul 25, 23:29 UTCJul 26, 01:28 UTC1h 59m
2026-07-25 UAL2481 PSP → SFO Jul 25, 18:41 UTCJul 25, 20:47 UTC2h 6m
2026-07-25 UAL2481 PSP → SFO Jul 25, 18:40 UTCJul 25, 21:10 UTC2h 30m
2026-07-25 UAL1643 RIC → DEN Jul 25, 14:50 UTCJul 25, 16:55 UTC2h 5m
2026-07-25 UAL1414 EWR → CHS Jul 25, 10:15 UTCJul 25, 12:45 UTC2h 30m
2026-07-25 UAL8140 LGA → IAH Jul 25, 03:05 UTCJul 25, 04:55 UTC1h 50m
2026-07-24 UAL706 LAX → ORD Jul 24, 22:05 UTCJul 25, 01:15 UTC3h 10m
2026-07-24 UAL706 LAX → ORD Jul 24, 21:46 UTCJul 25, 00:56 UTC3h 10m
2026-07-24 UAL2440 ORD → AUS Jul 24, 16:30 UTCJul 24, 19:45 UTC3h 15m
2026-07-24 UAL2631 ORD → MCI Jul 24, 11:55 UTCJul 24, 14:25 UTC2h 30m
2026-07-24 UAL2631 ORD → MCI Jul 24, 11:36 UTCJul 24, 13:52 UTC2h 16m
2026-07-24 UAL1779 MIA → EWR Jul 24, 03:10 UTCJul 24, 04:55 UTC1h 45m
2026-07-23 UAL2135 EWR → MCO Jul 23, 22:25 UTCJul 24, 00:30 UTC2h 5m
2026-07-23 UAL1448 SAN → SFO Jul 23, 18:20 UTCJul 23, 20:20 UTC2h 0m
2026-07-23 UAL580 BTV → ORD Jul 23, 12:25 UTCJul 23, 16:00 UTC3h 35m
2026-07-23 UAL661 ORD → EWR Jul 23, 03:25 UTCJul 23, 07:10 UTC3h 45m
2026-07-23 UAL2088 SJU → ORD Jul 23, 00:35 UTCJul 23, 00:40 UTC5m
2026-07-22 UAL2088 SJU → ORD Jul 22, 21:45 UTCJul 23, 00:40 UTC2h 55m
2026-07-22 UAL2088 SJU → ORD Jul 22, 20:10 UTCJul 22, 20:25 UTC15m
2026-07-22 UAL2088 SJU → ORD Jul 22, 20:10 UTCJul 23, 00:20 UTC4h 10m
2026-07-22 UAL1996 ORD → SJU Jul 22, 18:05 UTCJul 22, 18:25 UTC20m
2026-07-22 UAL1996 ORD → SJU Jul 22, 14:19 UTCJul 22, 18:15 UTC3h 56m
2026-07-22 UAL1996 ORD → SJU Jul 22, 14:10 UTCJul 22, 16:25 UTC2h 15m
2026-07-21 UAL1525 EWR → ORD Jul 21, 23:45 UTCJul 22, 02:00 UTC2h 15m
2026-07-21 UAL2295 ORD → EWR Jul 21, 11:20 UTCJul 21, 13:25 UTC2h 5m
2026-07-20 UAL1015 EWR → MIA Jul 20, 22:55 UTCJul 21, 01:10 UTC2h 14m
2026-07-20 UAL1693 - Jul 20, 19:35 UTCJul 20, 21:25 UTC1h 50m
2026-07-20 UAL2091 - Jul 20, 13:15 UTCJul 20, 17:05 UTC3h 50m
2026-07-20 UAL1389 CMH → DEN Jul 20, 03:00 UTCJul 20, 05:00 UTC2h 0m
2026-07-19 UAL2769 - Jul 19, 21:55 UTCJul 19, 23:55 UTC2h 0m
2026-07-19 UAL1755 EWR → IAH Jul 19, 16:40 UTCJul 19, 19:30 UTC2h 50m
2026-07-19 UAL1421 - Jul 19, 12:25 UTCJul 19, 15:00 UTC2h 35m
2026-07-19 UAL353 SAN → EWR Jul 19, 06:10 UTCJul 19, 09:55 UTC3h 45m
2026-07-19 UAL1262 ORD → BOS Jul 19, 03:00 UTCJul 19, 04:45 UTC1h 45m
2026-07-18 UAL1354 RSW → DEN Jul 18, 20:15 UTCJul 18, 23:35 UTC3h 20m
2026-07-18 UAL1102 ORD → RSW Jul 18, 16:06 UTCJul 18, 18:31 UTC2h 25m
2026-07-18 UAL1102 ORD → RSW Jul 18, 16:10 UTCJul 18, 18:35 UTC2h 25m
2026-07-18 UAL2800 EWR → ORD Jul 18, 11:35 UTCJul 18, 13:25 UTC1h 50m
2026-07-18 UAL1745 SFO → IAH Jul 18, 06:15 UTCJul 18, 09:25 UTC3h 10m
2026-07-17 UAL407 EWR → DEN Jul 17, 23:14 UTCJul 18, 02:55 UTC3h 41m
2026-07-17 UAL1233 ORD → SFO Jul 17, 17:55 UTCJul 17, 21:10 UTC3h 15m
2026-07-17 UAL1701 EWR → DEN Jul 17, 12:04 UTCJul 17, 15:25 UTC3h 20m
2026-07-17 UAL1209 ORD → EWR Jul 17, 03:03 UTCJul 17, 04:29 UTC1h 26m
2026-07-17 UAL1209 ORD → EWR Jul 17, 02:59 UTCJul 17, 04:35 UTC1h 35m
2026-07-16 UAL675 - Jul 16, 22:45 UTCJul 17, 00:40 UTC1h 55m
2026-07-16 UAL2802 IAH → DEN Jul 16, 18:55 UTCJul 16, 20:49 UTC1h 55m
2026-07-16 UAL2089 - Jul 16, 14:20 UTCJul 16, 16:35 UTC2h 15m
2026-07-15 UAL695 - Jul 15, 23:55 UTCJul 16, 00:20 UTC25m
2026-07-15 UAL695 - Jul 15, 20:05 UTCJul 15, 21:55 UTC1h 50m

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 N14563 page for operator, model, and routing details .

Mode-S A0B889 frequently asked

What is Mode-S code A0B889?
A0B889 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14563.
Where is Mode-S A0B889 registered?
Mode-S code A0B889 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 A0B889 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 01:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B889, octal 50134211, decimal 10,533,001.
What flights does A0B889 operate?
Mode-S A0B889 has broadcast 20 distinct callsigns, including UAL558, UAL2487, UAL660, UAL2297, UAL1023.