Apparatus

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sensors Mode-S transponder

A0B7FE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14524 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A0B7FE
Octal
50133776
Decimal
10,532,862
Country
US
Tail
N14524
Type
A21N
Broadcasting now · callsign UAL2758 · 21,175 ft
Flights observed
448
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 23:20 UTC

Current position

A0B7FE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0B7FE 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
UAL1946 United Airlines 9 2026-07-24
UAL2329 - 7 2026-07-14
UAL767 - 6 2026-07-09
UAL670 United Airlines 6 2026-07-23
UAL2487 - 6 2026-07-01
UAL2472 United Airlines 6 2026-04-25
UAL2132 United Airlines 6 2026-07-22
UAL1974 - 6 2026-07-10
UAL1363 - 6 2026-06-21
UAL706 United Airlines 5 2026-05-16
UAL2803 - 5 2026-07-17
UAL2613 United Airlines 5 2026-07-23
UAL2354 United Airlines 5 2026-07-19
UAL1389 - 5 2026-07-12
UAL1132 United Airlines 5 2026-07-25
UAL800 United Airlines 4 2026-05-29
UAL576 United Airlines 4 2026-07-24
UAL563 United Airlines 4 2026-06-22
UAL540 United Airlines 4 2026-07-23
UAL2829 United Airlines 4 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UAL1132 ORD → PHL Jul 25, 19:35 UTCJul 25, 23:10 UTC3h 35m
2026-07-25 UAL1132 ORD → PHL Jul 25, 19:29 UTCJul 25, 23:19 UTC3h 50m
2026-07-25 UAL1119 DEN → CUN Jul 25, 14:15 UTCJul 25, 17:50 UTC3h 35m
2026-07-25 UAL2829 GUM → SFO Jul 25, 03:00 UTCJul 25, 05:00 UTC2h 0m
2026-07-25 UAL2829 GUM → SFO Jul 25, 03:03 UTCJul 25, 04:58 UTC1h 55m
2026-07-24 UAL576 MIA → DEN Jul 24, 21:15 UTCJul 25, 00:55 UTC3h 40m
2026-07-24 UAL1946 ORD → LGA Jul 24, 15:25 UTCJul 24, 19:00 UTC3h 35m
2026-07-24 UAL531 EWR → PBI Jul 24, 03:40 UTCJul 24, 05:35 UTC1h 55m
2026-07-23 UAL1197 PBI → EWR Jul 23, 21:35 UTCJul 24, 01:15 UTC3h 40m
2026-07-23 UAL1423 YVR → SFO Jul 23, 16:40 UTCJul 23, 19:45 UTC3h 5m
2026-07-23 UAL670 IAD → SFO Jul 23, 10:45 UTCJul 23, 14:40 UTC3h 55m
2026-07-23 UAL2613 DEN → EWR Jul 23, 05:18 UTCJul 23, 08:12 UTC2h 54m
2026-07-23 UAL2613 DEN → EWR Jul 23, 05:10 UTCJul 23, 08:15 UTC3h 5m
2026-07-23 UAL540 PDX → DEN Jul 23, 02:10 UTCJul 23, 03:00 UTC50m
2026-07-22 UAL540 PDX → DEN Jul 22, 20:05 UTCJul 22, 23:15 UTC3h 10m
2026-07-22 UAL1506 SFO → ORD Jul 22, 16:30 UTCJul 22, 18:35 UTC2h 5m
2026-07-22 UAL1889 SFO → IND Jul 22, 12:10 UTCJul 22, 14:05 UTC1h 55m
2026-07-22 UAL2132 MSP → EWR Jul 22, 03:30 UTCJul 22, 05:25 UTC1h 55m
2026-07-21 UAL1132 CUN → DEN Jul 21, 19:30 UTCJul 21, 23:05 UTC3h 35m
2026-07-21 UAL1119 DEN → CUN Jul 21, 14:05 UTCJul 21, 17:40 UTC3h 35m
2026-07-21 UAL2829 GUM → SFO Jul 21, 03:00 UTCJul 21, 04:55 UTC1h 55m
2026-07-20 UAL576 MIA → DEN Jul 20, 21:25 UTCJul 21, 01:00 UTC3h 34m
2026-07-20 UAL1946 - Jul 20, 19:15 UTCJul 20, 19:25 UTC10m
2026-07-20 UAL1946 - Jul 20, 15:30 UTCJul 20, 19:25 UTC3h 55m
2026-07-20 UAL1946 LAX → ORD Jul 20, 15:37 UTCJul 20, 19:00 UTC3h 23m
2026-07-20 UAL531 EWR → PBI Jul 20, 04:05 UTCJul 20, 05:55 UTC1h 50m
2026-07-19 UAL1770 EWR → SAV Jul 19, 21:55 UTCJul 20, 01:10 UTC3h 15m
2026-07-19 UAL2354 BUR → SFO Jul 19, 16:35 UTCJul 19, 20:00 UTC3h 25m
2026-07-19 UAL2601 RSW → EWR Jul 19, 12:20 UTCJul 19, 14:25 UTC2h 5m
2026-07-18 UAL1424 DEN → SEA Jul 18, 18:00 UTCJul 18, 20:20 UTC2h 20m
2026-07-18 UAL1714 MCO → DEN Jul 18, 12:10 UTCJul 18, 15:20 UTC3h 10m
2026-07-18 UAL259 DEN → MCO Jul 18, 00:35 UTCJul 18, 03:45 UTC3h 11m
2026-07-17 UAL2803 ORD → DEN Jul 17, 20:35 UTCJul 17, 22:29 UTC1h 55m
2026-07-17 UAL2618 - Jul 17, 14:10 UTCJul 17, 18:25 UTC4h 15m
2026-07-17 UAL360 DFW → EWR Jul 17, 01:45 UTCJul 17, 04:10 UTC2h 25m
2026-07-16 UAL1729 LGA → DEN Jul 16, 19:50 UTCJul 16, 23:20 UTC3h 30m
2026-07-16 UAL1442 DEN → LGA Jul 16, 14:29 UTCJul 16, 17:54 UTC3h 25m
2026-07-16 UAL1874 - Jul 16, 10:20 UTCJul 16, 12:14 UTC1h 55m
2026-07-16 UAL2813 - Jul 16, 02:15 UTCJul 16, 04:25 UTC2h 10m
2026-07-15 UAL2497 IAD → ORD Jul 15, 22:35 UTCJul 16, 00:10 UTC1h 35m
2026-07-15 UAL2794 - Jul 15, 18:55 UTCJul 15, 20:20 UTC1h 25m
2026-07-15 UAL1525 EWR → ORD Jul 15, 14:45 UTCJul 15, 16:40 UTC1h 55m
2026-07-15 UAL2295 ORD → EWR Jul 15, 11:15 UTCJul 15, 12:50 UTC1h 35m
2026-07-14 UAL1998 - Jul 14, 23:40 UTCJul 15, 01:30 UTC1h 50m
2026-07-14 UAL2329 - Jul 14, 19:45 UTCJul 14, 21:25 UTC1h 40m
2026-07-14 UAL587 - Jul 14, 14:05 UTCJul 14, 17:45 UTC3h 40m
2026-07-13 UAL1107 - Jul 13, 23:00 UTCJul 14, 02:20 UTC3h 20m
2026-07-12 UAL1015 BOS → ORD Jul 12, 23:02 UTCJul 13, 00:47 UTC1h 45m
2026-07-12 UAL1015 - Jul 12, 22:55 UTCJul 13, 01:01 UTC2h 5m
2026-07-12 UAL1693 - Jul 12, 19:10 UTCJul 12, 21:05 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 N14524 page for operator, model, and routing details .

Mode-S A0B7FE frequently asked

What is Mode-S code A0B7FE?
A0B7FE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14524.
Where is Mode-S A0B7FE registered?
Mode-S code A0B7FE 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 A0B7FE broadcasting right now?
Yes. Mode-S A0B7FE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B7FE, octal 50133776, decimal 10,532,862.
What flights does A0B7FE operate?
Mode-S A0B7FE has broadcast 20 distinct callsigns, including UAL1946, UAL2329, UAL767, UAL670, UAL2487.