Apparatus

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sensors Mode-S transponder

A0B88A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14564 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A0B88A
Octal
50134212
Decimal
10,533,002
Country
US
Tail
N14564
Type
A21N
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
446
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A0B88A.

Country allocation

The ICAO 24-bit address A0B88A 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
UAL617 - 9 2026-07-15
UAL2040 United Airlines 8 2026-05-02
UAL534 United Airlines 7 2026-07-26
UAL2197 United Airlines 6 2026-05-05
UAL374 United Airlines 5 2026-05-26
UAL2426 United Airlines 5 2026-05-02
UAL2292 United Airlines 5 2026-06-30
UAL2182 United Airlines 5 2026-05-02
UAL1756 United Airlines 5 2026-04-26
UAL1506 United Airlines 5 2026-07-06
UAL1323 United Airlines 5 2026-07-24
UAL664 United Airlines 4 2026-05-04
UAL660 - 4 2026-07-20
UAL540 - 4 2026-07-06
UAL526 United Airlines 4 2026-07-24
UAL3779 United Airlines 4 2026-05-14
UAL3754 - 4 2026-06-28
UAL2643 United Airlines 4 2026-07-21
UAL2481 United Airlines 4 2026-05-16
UAL2455 - 4 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1197 PBI → EWR Jul 26, 21:25 UTCJul 26, 22:30 UTC1h 5m
2026-07-26 UAL1423 YVR → SFO Jul 26, 16:30 UTCJul 26, 19:40 UTC3h 10m
2026-07-26 UAL670 IAD → SFO Jul 26, 10:57 UTCJul 26, 14:27 UTC3h 30m
2026-07-26 UAL670 IAD → SFO Jul 26, 10:55 UTCJul 26, 14:35 UTC3h 40m
2026-07-26 UAL534 HNL → LAX Jul 26, 02:30 UTCJul 26, 04:10 UTC1h 40m
2026-07-25 UAL2113 EWR → ATL Jul 25, 18:10 UTCJul 25, 21:50 UTC3h 40m
2026-07-25 UAL2361 SFO → IAH Jul 25, 12:30 UTCJul 25, 16:05 UTC3h 35m
2026-07-25 UAL2361 SFO → IAH Jul 25, 12:23 UTCJul 25, 16:01 UTC3h 38m
2026-07-25 UAL1411 SFO → EWR Jul 25, 00:45 UTCJul 25, 02:40 UTC1h 55m
2026-07-24 UAL1323 EWR → JAX Jul 24, 21:40 UTCJul 24, 23:20 UTC1h 40m
2026-07-24 UAL1323 EWR → JAX Jul 24, 21:07 UTCJul 24, 23:18 UTC2h 11m
2026-07-24 UAL526 AMM → IAD Jul 24, 18:05 UTCJul 24, 19:35 UTC1h 30m
2026-07-24 UAL792 LAX → EWR Jul 24, 12:30 UTCJul 24, 15:50 UTC3h 20m
2026-07-24 UAL792 LAX → EWR Jul 24, 12:33 UTCJul 24, 15:42 UTC3h 9m
2026-07-24 UAL2408 RSW → EWR Jul 24, 00:50 UTCJul 24, 03:35 UTC2h 45m
2026-07-24 UAL2408 RSW → EWR Jul 24, 00:33 UTCJul 24, 03:33 UTC3h 0m
2026-07-23 UAL1351 FLL → EWR Jul 23, 20:15 UTCJul 23, 22:30 UTC2h 15m
2026-07-23 UAL2099 IAH → SFO Jul 23, 14:25 UTCJul 23, 18:20 UTC3h 55m
2026-07-23 UAL729 SFO → ORD Jul 23, 07:55 UTCJul 23, 11:30 UTC3h 35m
2026-07-23 UAL2499 SEA → SFO Jul 23, 01:45 UTCJul 23, 05:25 UTC3h 40m
2026-07-23 UAL2499 SEA → SFO Jul 23, 01:56 UTCJul 23, 05:16 UTC3h 20m
2026-07-22 UAL2832 OMA → ORD Jul 22, 21:00 UTCJul 22, 23:40 UTC2h 40m
2026-07-22 UAL2601 RSW → EWR Jul 22, 16:10 UTCJul 22, 19:27 UTC3h 17m
2026-07-22 UAL2601 RSW → EWR Jul 22, 16:20 UTCJul 22, 19:35 UTC3h 15m
2026-07-22 UAL3035 IAD → DEN Jul 22, 11:20 UTCJul 22, 14:30 UTC3h 10m
2026-07-21 UAL1442 - Jul 21, 15:10 UTCJul 21, 18:30 UTC3h 20m
2026-07-21 UAL1442 DEN → IAD Jul 21, 15:08 UTCJul 21, 19:26 UTC4h 18m
2026-07-21 UAL2643 DEN → BOS Jul 21, 11:45 UTCJul 21, 13:35 UTC1h 50m
2026-07-20 UAL1585 - Jul 20, 23:50 UTCJul 21, 01:50 UTC2h 0m
2026-07-20 UAL1585 DEN → IAH Jul 20, 23:46 UTCJul 21, 01:46 UTC2h 0m
2026-07-20 UAL1565 SFO → PHX Jul 20, 19:55 UTCJul 20, 21:55 UTC2h 0m
2026-07-20 UAL660 - Jul 20, 14:10 UTCJul 20, 16:30 UTC2h 20m
2026-07-20 UAL660 ORD → SAN Jul 20, 14:16 UTCJul 20, 17:39 UTC3h 23m
2026-07-20 UAL1850 IAH → SFO Jul 20, 08:15 UTCJul 20, 12:00 UTC3h 45m
2026-07-20 UAL2123 AUS → SFO Jul 20, 03:29 UTCJul 20, 05:33 UTC2h 4m
2026-07-20 UAL2123 AUS → SFO Jul 20, 03:30 UTCJul 20, 05:35 UTC2h 5m
2026-07-19 UAL800 EWR → MCO Jul 19, 21:20 UTCJul 20, 01:15 UTC3h 55m
2026-07-19 UAL1232 EWR → ORD Jul 19, 16:00 UTCJul 19, 19:25 UTC3h 25m
2026-07-19 UAL2643 DEN → BOS Jul 19, 11:55 UTCJul 19, 13:45 UTC1h 50m
2026-07-19 UAL2813 ORD → IAH Jul 19, 02:33 UTCJul 19, 04:44 UTC2h 11m
2026-07-19 UAL2813 - Jul 19, 02:25 UTCJul 19, 04:50 UTC2h 25m
2026-07-16 UAL2315 - Jul 16, 14:15 UTCJul 16, 16:09 UTC1h 55m
2026-07-16 UAL1974 ORD → DEN Jul 16, 00:10 UTCJul 16, 02:00 UTC1h 50m
2026-07-15 UAL617 - Jul 15, 21:55 UTCJul 15, 22:00 UTC5m
2026-07-15 UAL617 DEN → ORD Jul 15, 19:55 UTCJul 15, 22:00 UTC2h 5m
2026-07-15 UAL617 DEN → ORD Jul 15, 19:44 UTCJul 15, 21:38 UTC1h 54m
2026-07-15 UAL662 BOS → DEN Jul 15, 14:00 UTCJul 15, 17:50 UTC3h 50m
2026-07-15 UAL1356 DEN → BOS Jul 15, 00:10 UTCJul 15, 03:45 UTC3h 35m
2026-07-14 UAL1411 PDX → DEN Jul 14, 20:00 UTCJul 14, 22:10 UTC2h 10m
2026-07-14 UAL1994 - Jul 14, 14:20 UTCJul 14, 17:55 UTC3h 35m

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 N14564 page for operator, model, and routing details .

Mode-S A0B88A frequently asked

What is Mode-S code A0B88A?
A0B88A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14564.
Where is Mode-S A0B88A registered?
Mode-S code A0B88A 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 A0B88A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B88A, octal 50134212, decimal 10,533,002.
What flights does A0B88A operate?
Mode-S A0B88A has broadcast 20 distinct callsigns, including UAL617, UAL2040, UAL534, UAL2197, UAL374.