Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A0B86C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14559 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A0B86C
Octal
50134154
Decimal
10,532,972
Country
US
Tail
N14559
Type
A21N
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
450
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A0B86C.

Country allocation

The ICAO 24-bit address A0B86C 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 - 10 2026-07-21
UAL695 United Airlines 8 2026-07-21
UAL360 - 8 2026-07-09
UAL1996 United Airlines 7 2026-07-26
UAL597 - 6 2026-06-21
UAL459 - 6 2026-06-29
UAL2088 United Airlines 6 2026-07-26
UAL1801 United Airlines 6 2026-07-19
UAL1568 United Airlines 6 2026-06-06
UAL714 United Airlines 5 2026-06-11
UAL617 United Airlines 5 2026-06-11
UAL558 - 5 2026-07-04
UAL540 - 5 2026-06-29
UAL530 - 5 2026-07-22
UAL498 - 5 2026-06-29
UAL2618 United Airlines 5 2026-07-20
UAL2494 - 5 2026-07-18
UAL1803 - 5 2026-06-21
UAL1755 United Airlines 5 2026-06-11
UAL1013 - 5 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2088 SJU → ORD Jul 26, 22:10 UTCJul 26, 23:00 UTC50m
2026-07-26 UAL2088 SJU → ORD Jul 26, 20:25 UTCJul 26, 20:35 UTC10m
2026-07-26 UAL1996 ORD → SJU Jul 26, 18:25 UTCJul 26, 18:45 UTC20m
2026-07-26 UAL1996 ORD → SJU Jul 26, 14:30 UTCJul 26, 16:50 UTC2h 20m
2026-07-25 UAL2832 OMA → ORD Jul 25, 21:25 UTCJul 26, 00:10 UTC2h 45m
2026-07-25 UAL8150 YYZ → CLT Jul 25, 15:55 UTCJul 25, 19:10 UTC3h 15m
2026-07-25 UAL2031 IAD → BTV Jul 25, 10:45 UTCJul 25, 13:55 UTC3h 10m
2026-07-25 UAL1412 TPA → EWR Jul 25, 01:45 UTCJul 25, 04:35 UTC2h 50m
2026-07-24 UAL2845 MCO → DEN Jul 24, 20:05 UTCJul 24, 23:25 UTC3h 20m
2026-07-24 UAL2292 EWR → DEN Jul 24, 14:28 UTCJul 24, 17:47 UTC3h 19m
2026-07-24 UAL2292 EWR → DEN Jul 24, 14:40 UTCJul 24, 17:50 UTC3h 10m
2026-07-23 UAL407 DTW → ORD Jul 23, 23:15 UTCJul 24, 02:55 UTC3h 40m
2026-07-23 UAL1233 ORD → SFO Jul 23, 17:59 UTCJul 23, 20:55 UTC2h 56m
2026-07-23 UAL1233 ORD → SFO Jul 23, 17:55 UTCJul 23, 21:00 UTC3h 5m
2026-07-23 UAL2368 SFO → DEN Jul 23, 14:05 UTCJul 23, 15:55 UTC1h 50m
2026-07-23 UAL540K DEN → SAN Jul 23, 04:35 UTCJul 23, 06:25 UTC1h 50m
2026-07-23 UAL8137 CLE → YYZ Jul 23, 01:30 UTCJul 23, 02:35 UTC1h 5m
2026-07-22 UAL1411 SFO → EWR Jul 22, 20:05 UTCJul 22, 23:10 UTC3h 5m
2026-07-22 UAL1994 SFO → PDX Jul 22, 14:50 UTCJul 22, 18:40 UTC3h 50m
2026-07-22 UAL1994 SFO → PDX Jul 22, 14:37 UTCJul 22, 18:37 UTC4h 0m
2026-07-22 UAL530 - Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 UAL1209 ORD → EWR Jul 22, 03:40 UTCJul 22, 05:10 UTC1h 30m
2026-07-21 UAL675 CLT → IAH Jul 21, 23:15 UTCJul 22, 01:50 UTC2h 35m
2026-07-21 UAL2802 IAH → DEN Jul 21, 18:45 UTCJul 21, 20:55 UTC2h 10m
2026-07-21 UAL2089 - Jul 21, 14:15 UTCJul 21, 16:20 UTC2h 5m
2026-07-21 UAL2089 - Jul 21, 11:55 UTCJul 21, 12:05 UTC10m
2026-07-21 UAL695 EWR → CLT Jul 21, 00:05 UTCJul 21, 00:25 UTC20m
2026-07-20 UAL695 EWR → CLT Jul 20, 20:20 UTCJul 20, 22:05 UTC1h 45m
2026-07-20 UAL2618 IAD → SFO Jul 20, 14:18 UTCJul 20, 17:18 UTC3h 0m
2026-07-20 UAL2618 IAD → SFO Jul 20, 14:10 UTCJul 20, 17:00 UTC2h 50m
2026-07-19 UAL1801 BUR → SFO Jul 19, 21:55 UTCJul 20, 02:05 UTC4h 10m
2026-07-19 UAL1801 BUR → SFO Jul 19, 21:53 UTCJul 20, 02:03 UTC4h 10m
2026-07-19 UAL2865 DEN → ORD Jul 19, 17:45 UTCJul 19, 20:00 UTC2h 15m
2026-07-19 UAL2368 - Jul 19, 14:20 UTCJul 19, 16:15 UTC1h 55m
2026-07-18 UAL745 - Jul 18, 22:00 UTCJul 19, 01:30 UTC3h 30m
2026-07-18 UAL2494 RSW → ORD Jul 18, 16:40 UTCJul 18, 19:30 UTC2h 50m
2026-07-18 UAL2494 RSW → ORD Jul 18, 16:42 UTCJul 18, 19:16 UTC2h 34m
2026-07-18 UAL1740 ORD → RSW Jul 18, 13:05 UTCJul 18, 15:30 UTC2h 25m
2026-07-18 UAL2320 - Jul 18, 00:29 UTCJul 18, 03:40 UTC3h 11m
2026-07-17 UAL777 - Jul 17, 19:20 UTCJul 17, 22:35 UTC3h 15m
2026-07-17 UAL580 - Jul 17, 12:30 UTCJul 17, 16:34 UTC4h 5m
2026-07-17 UAL2499 ORD → HHR Jul 17, 03:39 UTCJul 17, 07:05 UTC3h 25m
2026-07-16 UAL2832 RSW → ORD Jul 16, 22:40 UTCJul 17, 01:29 UTC2h 50m
2026-07-16 UAL2601 DEN → RSW Jul 16, 15:45 UTCJul 16, 19:10 UTC3h 25m
2026-07-16 UAL2806 ORD → DEN Jul 16, 11:25 UTCJul 16, 13:20 UTC1h 55m
2026-07-16 UAL1998 EWR → ORD Jul 16, 02:45 UTCJul 16, 04:35 UTC1h 50m
2026-07-15 UAL1715 DEN → EWR Jul 15, 22:15 UTCJul 16, 01:30 UTC3h 15m
2026-07-15 UAL2802 - Jul 15, 18:55 UTCJul 15, 20:50 UTC1h 55m
2026-07-15 UAL2089 - Jul 15, 14:10 UTCJul 15, 16:05 UTC1h 55m
2026-07-15 UAL2089 - Jul 15, 11:50 UTCJul 15, 12:05 UTC15m

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 N14559 page for operator, model, and routing details .

Mode-S A0B86C frequently asked

What is Mode-S code A0B86C?
A0B86C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14559.
Where is Mode-S A0B86C registered?
Mode-S code A0B86C 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 A0B86C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B86C, octal 50134154, decimal 10,532,972.
What flights does A0B86C operate?
Mode-S A0B86C has broadcast 20 distinct callsigns, including UAL2089, UAL695, UAL360, UAL1996, UAL597.