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
No current signal · last broadcast 2h ago
Flights observed
392
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A0B88B.

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
UAL8185 - 5 2026-07-03
UAL2179 - 5 2026-06-29
UAL1865 United Airlines 5 2026-05-09
UAL1421 - 5 2026-06-18
UAL675 - 4 2026-06-16
UAL405 - 4 2026-04-18
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
UAL2436 United Airlines 4 2026-04-28
UAL2408 - 4 2026-07-14
UAL2354 - 4 2026-06-27
UAL1974 United Airlines 4 2026-05-31
UAL1775 United Airlines 4 2026-05-26
UAL1755 - 4 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL2408 DEN → IAD Jul 14, 00:30 UTCJul 14, 03:35 UTC3h 5m
2026-07-13 UAL1351 SEA → DEN Jul 13, 20:05 UTCJul 13, 22:15 UTC2h 10m
2026-07-13 UAL2099 - Jul 13, 14:15 UTCJul 13, 17:55 UTC3h 40m
2026-07-13 UAL212 - Jul 13, 00:15 UTCJul 13, 03:50 UTC3h 35m
2026-07-12 UAL1363 - Jul 12, 18:35 UTCJul 12, 22:05 UTC3h 30m
2026-07-12 UAL2683 MCO → ORD Jul 12, 14:01 UTCJul 12, 16:30 UTC2h 30m
2026-07-11 UAL1382 ORD → MCO Jul 11, 23:25 UTCJul 12, 01:30 UTC2h 5m
2026-07-11 UAL2865 DEN → ORD Jul 11, 18:40 UTCJul 11, 20:35 UTC1h 55m
2026-07-11 UAL1714 MCO → DEN Jul 11, 12:35 UTCJul 11, 15:50 UTC3h 15m
2026-07-11 UAL259 DEN → MCO Jul 11, 01:45 UTCJul 11, 04:50 UTC3h 5m
2026-07-10 UAL1323 LAS → DEN Jul 10, 21:10 UTCJul 10, 22:35 UTC1h 25m
2026-07-10 UAL526 DEN → LAS Jul 10, 17:40 UTCJul 10, 19:10 UTC1h 30m
2026-07-10 UAL792 IAD → DEN Jul 10, 12:30 UTCJul 10, 15:55 UTC3h 25m
2026-07-10 UAL1924 DEN → IAD Jul 10, 07:05 UTCJul 10, 10:15 UTC3h 10m
2026-07-10 UAL2834 LGA → DEN Jul 10, 01:40 UTCJul 10, 05:35 UTC3h 55m
2026-07-10 UAL2834 LGA → DEN Jul 10, 00:50 UTCJul 10, 05:28 UTC4h 38m
2026-07-09 UAL2446 DEN → LGA Jul 9, 16:10 UTCJul 9, 19:20 UTC3h 10m
2026-07-09 UAL1479 SFO → DEN Jul 9, 12:15 UTCJul 9, 14:15 UTC2h 0m
2026-07-09 UAL1389 DEN → SFO Jul 9, 03:20 UTCJul 9, 05:30 UTC2h 10m
2026-07-09 UAL1389 DEN → SFO Jul 9, 02:39 UTCJul 9, 05:30 UTC2h 51m
2026-07-08 UAL2845 MCO → DEN Jul 8, 19:50 UTCJul 8, 23:55 UTC4h 5m
2026-07-08 UAL2292 EWR → DEN Jul 8, 14:30 UTCJul 8, 17:45 UTC3h 15m
2026-07-08 UAL495 IAD → DEN Jul 8, 02:55 UTCJul 8, 06:05 UTC3h 10m
2026-07-07 UAL421 DEN → IAD Jul 7, 22:20 UTCJul 8, 01:25 UTC3h 5m
2026-07-07 UAL2061 - Jul 7, 18:15 UTCJul 7, 20:05 UTC1h 50m
2026-07-07 UAL1638 DEN → LAX Jul 7, 14:10 UTCJul 7, 16:05 UTC1h 55m
2026-07-07 UAL2610 - Jul 7, 02:00 UTCJul 7, 03:50 UTC1h 50m
2026-07-06 UAL374 - Jul 6, 19:45 UTCJul 6, 23:20 UTC3h 35m
2026-07-06 UAL1069 - Jul 6, 14:05 UTCJul 6, 17:45 UTC3h 40m
2026-07-05 UAL745 - Jul 5, 22:05 UTCJul 6, 01:35 UTC3h 30m
2026-07-05 UAL2475 - Jul 5, 16:55 UTCJul 5, 19:35 UTC2h 40m
2026-07-05 UAL2475 MCO → ORD Jul 5, 16:54 UTCJul 5, 19:09 UTC2h 15m
2026-07-05 UAL2280 LAX → BOS Jul 5, 12:50 UTCJul 5, 14:55 UTC2h 5m
2026-07-05 UAL368 SFO → ORD Jul 5, 06:40 UTCJul 5, 10:20 UTC3h 40m
2026-07-05 UAL1389 DEN → SFO Jul 5, 01:55 UTCJul 5, 04:00 UTC2h 5m
2026-07-04 UAL1729 - Jul 4, 19:45 UTCJul 4, 23:40 UTC3h 55m
2026-07-04 UAL1442 IAH → EWR Jul 4, 14:21 UTCJul 4, 17:36 UTC3h 15m
2026-07-04 UAL1442 IAH → EWR Jul 4, 14:15 UTCJul 4, 17:35 UTC3h 20m
2026-07-04 UAL1214 SFO → DEN Jul 4, 00:56 UTCJul 4, 02:52 UTC1h 56m
2026-07-04 UAL1214 - Jul 4, 00:55 UTCJul 4, 02:50 UTC1h 55m
2026-07-03 UAL1450 DEN → SFO Jul 3, 19:28 UTCJul 3, 21:26 UTC1h 58m
2026-07-03 UAL1450 DEN → SFO Jul 3, 19:20 UTCJul 3, 21:30 UTC2h 10m
2026-07-03 UAL1450 - Jul 3, 15:40 UTCJul 3, 18:05 UTC2h 25m
2026-07-03 UAL1799 MIA → EWR Jul 3, 11:55 UTCJul 3, 13:55 UTC2h 0m
2026-07-03 UAL8185 - Jul 3, 08:10 UTCJul 3, 09:15 UTC1h 5m
2026-07-03 UAL8185 SDF → ORD Jul 3, 08:06 UTCJul 3, 09:00 UTC54m
2026-07-03 UAL8185 - Jul 3, 04:35 UTCJul 3, 05:10 UTC35m
2026-07-03 UAL8185 DEN → SDF Jul 3, 02:00 UTCJul 3, 04:18 UTC2h 18m
2026-07-03 UAL8185 DEN → SDF Jul 3, 02:00 UTCJul 3, 05:10 UTC3h 10m
2026-07-02 UAL746 DCA → DEN Jul 2, 20:20 UTCJul 2, 23:35 UTC3h 15m

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?
No active broadcast right now. Last signal was 2h ago.
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, UAL8185.