Apparatus

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sensors Mode-S transponder

A0B88B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14565 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A0B88B
Octal
50134213
Decimal
10,533,003
Country
US
Tail
N14565
Type
A21N
Broadcasting now · callsign UAL1197 · 29,975 ft
Flights observed
449
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Current position

A0B88B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0B88B 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
UAL2089 - 8 2026-07-01
UAL695 - 6 2026-07-01
UAL587 United Airlines 6 2026-06-15
UAL2497 United Airlines 6 2026-07-01
UAL1775 - 6 2026-07-19
UAL8185 - 5 2026-07-03
UAL2408 United Airlines 5 2026-07-19
UAL2179 - 5 2026-06-29
UAL1996 United Airlines 5 2026-07-24
UAL1865 United Airlines 5 2026-05-09
UAL1421 - 5 2026-06-18
UAL1351 - 5 2026-07-18
UAL675 - 4 2026-06-16
UAL405 - 4 2026-04-18
UAL374 - 4 2026-07-15
UAL360 United Airlines 4 2026-04-18
UAL347 United Airlines 4 2026-05-09
UAL2813 - 4 2026-07-02
UAL2633 United Airlines 4 2026-04-27
UAL2481 - 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL597 EWR → LAS Jul 26, 20:40 UTCJul 26, 22:45 UTC2h 5m
2026-07-26 UAL581 LAX → SFO Jul 26, 16:35 UTCJul 26, 18:40 UTC2h 5m
2026-07-26 UAL1377 CLT → DEN Jul 26, 12:18 UTCJul 26, 14:02 UTC1h 44m
2026-07-26 UAL1377 CLT → DEN Jul 26, 12:15 UTCJul 26, 14:10 UTC1h 55m
2026-07-26 UAL2829 GUM → SFO Jul 26, 03:00 UTCJul 26, 04:50 UTC1h 50m
2026-07-25 UAL576 MIA → DEN Jul 25, 21:20 UTCJul 26, 01:00 UTC3h 40m
2026-07-25 UAL1946 ORD → LGA Jul 25, 15:25 UTCJul 25, 19:05 UTC3h 40m
2026-07-25 UAL1946 ORD → LGA Jul 25, 15:37 UTCJul 25, 18:41 UTC3h 4m
2026-07-25 UAL661 ORD → EWR Jul 25, 03:03 UTCJul 25, 06:36 UTC3h 33m
2026-07-25 UAL661 ORD → EWR Jul 25, 03:00 UTCJul 25, 06:40 UTC3h 40m
2026-07-24 UAL2088 SJU → ORD Jul 24, 22:15 UTCJul 25, 00:45 UTC2h 30m
2026-07-24 UAL2088 SJU → ORD Jul 24, 20:05 UTCJul 24, 20:15 UTC10m
2026-07-24 UAL1996 ORD → SJU Jul 24, 18:05 UTCJul 24, 18:30 UTC25m
2026-07-24 UAL1996 ORD → SJU Jul 24, 14:19 UTCJul 24, 18:26 UTC4h 7m
2026-07-24 UAL1996 ORD → SJU Jul 24, 14:20 UTCJul 24, 16:30 UTC2h 10m
2026-07-24 UAL729 SFO → ORD Jul 24, 07:40 UTCJul 24, 11:10 UTC3h 30m
2026-07-24 UAL729 SFO → ORD Jul 24, 07:30 UTCJul 24, 11:02 UTC3h 32m
2026-07-24 UAL2499 SEA → SFO Jul 24, 01:50 UTCJul 24, 05:30 UTC3h 40m
2026-07-23 UAL2832 OMA → ORD Jul 23, 20:53 UTCJul 23, 23:09 UTC2h 16m
2026-07-23 UAL2832 OMA → ORD Jul 23, 20:50 UTCJul 23, 23:25 UTC2h 35m
2026-07-23 UAL2601 RSW → EWR Jul 23, 15:45 UTCJul 23, 19:00 UTC3h 15m
2026-07-23 UAL2806 BOG → EWR Jul 23, 11:15 UTCJul 23, 13:20 UTC2h 5m
2026-07-23 UAL8107 IAD → TPA Jul 23, 03:30 UTCJul 23, 05:25 UTC1h 55m
2026-07-22 UAL1565 SFO → PHX Jul 22, 20:00 UTCJul 23, 02:00 UTC6h 0m
2026-07-22 UAL660 EWR → CHS Jul 22, 14:10 UTCJul 22, 18:00 UTC3h 50m
2026-07-22 UAL212K LAX → ORD Jul 22, 00:10 UTCJul 22, 03:50 UTC3h 40m
2026-07-21 UAL1363 SJC → DEN Jul 21, 18:35 UTCJul 21, 22:10 UTC3h 35m
2026-07-21 UAL2683 ORD → SAN Jul 21, 13:50 UTCJul 21, 16:35 UTC2h 45m
2026-07-20 UAL1382 PHX → EWR Jul 20, 23:55 UTCJul 21, 02:00 UTC2h 5m
2026-07-20 UAL2481 MCO → ORD Jul 20, 19:15 UTCJul 20, 21:45 UTC2h 30m
2026-07-20 UAL2481 PSP → SFO Jul 20, 18:41 UTCJul 20, 21:24 UTC2h 43m
2026-07-20 UAL1643 RIC → DEN Jul 20, 14:35 UTCJul 20, 16:40 UTC2h 5m
2026-07-20 UAL1414 BOS → ORD Jul 20, 10:25 UTCJul 20, 12:30 UTC2h 5m
2026-07-20 UAL1779 MIA → EWR Jul 20, 03:35 UTCJul 20, 05:20 UTC1h 45m
2026-07-19 UAL706 LAX → ORD Jul 19, 21:45 UTCJul 20, 01:20 UTC3h 35m
2026-07-19 UAL2440 ORD → AUS Jul 19, 16:35 UTCJul 19, 19:35 UTC3h 0m
2026-07-19 UAL1775 IAD → ORD Jul 19, 13:10 UTCJul 19, 14:40 UTC1h 30m
2026-07-19 UAL2408 RSW → EWR Jul 19, 00:30 UTCJul 19, 03:30 UTC3h 0m
2026-07-18 UAL1351 SEA → DEN Jul 18, 20:15 UTCJul 18, 22:25 UTC2h 10m
2026-07-18 UAL2099 - Jul 18, 15:00 UTCJul 18, 18:55 UTC3h 55m
2026-07-18 UAL1850 SFO → ORD Jul 18, 08:20 UTCJul 18, 11:55 UTC3h 35m
2026-07-18 UAL2123 AUS → SFO Jul 18, 03:55 UTCJul 18, 06:05 UTC2h 10m
2026-07-17 UAL800 EWR → MCO Jul 17, 21:25 UTCJul 18, 01:10 UTC3h 45m
2026-07-17 UAL1232 DEN → BOS Jul 17, 16:00 UTCJul 17, 19:30 UTC3h 30m
2026-07-17 UAL2031 IAD → DEN Jul 17, 10:40 UTCJul 17, 13:45 UTC3h 5m
2026-07-17 UAL2031 IAD → DEN Jul 17, 10:42 UTCJul 17, 13:40 UTC2h 58m
2026-07-17 UAL1412 TPA → EWR Jul 17, 01:39 UTCJul 17, 04:35 UTC2h 55m
2026-07-16 UAL2297 EWR → LAS Jul 16, 19:25 UTCJul 16, 23:15 UTC3h 50m
2026-07-16 UAL558 DEN → BOS Jul 16, 14:05 UTCJul 16, 17:35 UTC3h 30m
2026-07-16 UAL2610 - Jul 16, 01:55 UTCJul 16, 03:50 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 N14565 page for operator, model, and routing details .

Mode-S A0B88B frequently asked

What is Mode-S code A0B88B?
A0B88B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14565.
Where is Mode-S A0B88B registered?
Mode-S code A0B88B 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 A0B88B broadcasting right now?
Yes. Mode-S A0B88B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B88B, octal 50134213, decimal 10,533,003.
What flights does A0B88B operate?
Mode-S A0B88B has broadcast 20 distinct callsigns, including UAL2089, UAL695, UAL587, UAL2497, UAL1775.