Apparatus

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sensors Mode-S transponder

A0B7BB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14507 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A0B7BB
Octal
50133673
Decimal
10,532,795
Country
US
Tail
N14507
Type
A21N
Broadcasting now · callsign UAL368K · 33,025 ft
Flights observed
426
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

A0B7BB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0B7BB 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
UAL2487 - 7 2026-07-13
UAL1792 - 7 2026-07-05
UAL540 - 6 2026-07-15
UAL1414 - 6 2026-07-03
UAL695 United Airlines 5 2026-07-22
UAL475 United Airlines 5 2026-07-17
UAL2455 United Airlines 5 2026-05-14
UAL2089 - 5 2026-07-22
UAL2088 - 5 2026-07-03
UAL1812 United Airlines 5 2026-06-01
UAL1132 - 5 2026-07-14
UAL1119 - 5 2026-07-14
UAL498 - 4 2026-07-15
UAL459 - 4 2026-07-15
UAL360 - 4 2026-06-19
UAL2613 - 4 2026-07-08
UAL2494 United Airlines 4 2026-07-20
UAL2446 United Airlines 4 2026-05-25
UAL212 - 4 2026-06-29
UAL1996 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2329 RNO → SFO Jul 26, 20:20 UTCJul 26, 21:55 UTC1h 35m
2026-07-26 UAL1069 SFO → LAX Jul 26, 14:25 UTCJul 26, 18:30 UTC4h 5m
2026-07-25 UAL745 FLL → DEN Jul 25, 21:40 UTCJul 26, 01:15 UTC3h 35m
2026-07-25 UAL2475 ORD → CLE Jul 25, 16:40 UTCJul 25, 19:20 UTC2h 40m
2026-07-25 UAL2280 LAX → BOS Jul 25, 12:50 UTCJul 25, 14:55 UTC2h 5m
2026-07-25 UAL368 EWR → FLL Jul 25, 07:00 UTCJul 25, 10:40 UTC3h 40m
2026-07-25 UAL2179 LGA → ORD Jul 25, 00:15 UTCJul 25, 04:45 UTC4h 30m
2026-07-24 UAL617 DEN → ORD Jul 24, 19:55 UTCJul 24, 22:00 UTC2h 5m
2026-07-24 UAL662 EWR → DFW Jul 24, 14:00 UTCJul 24, 18:05 UTC4h 5m
2026-07-24 UAL662 EWR → DFW Jul 24, 13:55 UTCJul 24, 17:59 UTC4h 4m
2026-07-24 UAL1356 SJC → DEN Jul 24, 00:10 UTCJul 24, 03:30 UTC3h 20m
2026-07-23 UAL1411 SFO → EWR Jul 23, 19:55 UTCJul 23, 22:05 UTC2h 10m
2026-07-23 UAL1994 SFO → PDX Jul 23, 14:25 UTCJul 23, 18:15 UTC3h 50m
2026-07-23 UAL530 ELP → ORD Jul 23, 10:19 UTCJul 23, 11:58 UTC1h 39m
2026-07-23 UAL530 ELP → ORD Jul 23, 10:15 UTCJul 23, 12:10 UTC1h 55m
2026-07-23 UAL1209 EWR → ATL Jul 23, 03:45 UTCJul 23, 05:05 UTC1h 20m
2026-07-22 UAL675 CLT → IAH Jul 22, 23:45 UTCJul 23, 01:35 UTC1h 50m
2026-07-22 UAL2802 IAH → DEN Jul 22, 18:45 UTCJul 22, 20:45 UTC2h 0m
2026-07-22 UAL2802 IAH → DEN Jul 22, 18:59 UTCJul 22, 20:51 UTC1h 52m
2026-07-22 UAL2089 - Jul 22, 14:10 UTCJul 22, 16:20 UTC2h 10m
2026-07-22 UAL2089 - Jul 22, 11:45 UTCJul 22, 12:00 UTC15m
2026-07-22 UAL2089 SJU → ORD Jul 22, 11:53 UTCJul 22, 16:10 UTC4h 17m
2026-07-22 UAL695 EWR → CLT Jul 22, 00:00 UTCJul 22, 00:20 UTC20m
2026-07-21 UAL695 EWR → CLT Jul 21, 20:10 UTCJul 21, 22:05 UTC1h 55m
2026-07-21 UAL2618 IAD → SFO Jul 21, 14:15 UTCJul 21, 17:40 UTC3h 25m
2026-07-20 UAL1801 BUR → SFO Jul 20, 22:05 UTCJul 21, 02:10 UTC4h 5m
2026-07-20 UAL2494 IAH → EWR Jul 20, 19:20 UTCJul 20, 19:30 UTC10m
2026-07-20 UAL2494 IAH → EWR Jul 20, 16:45 UTCJul 20, 19:30 UTC2h 45m
2026-07-20 UAL2494 IAH → EWR Jul 20, 16:42 UTCJul 20, 19:05 UTC2h 23m
2026-07-20 UAL1740 - Jul 20, 12:40 UTCJul 20, 14:55 UTC2h 15m
2026-07-20 UAL2197 - Jul 20, 00:05 UTCJul 20, 02:10 UTC2h 5m
2026-07-19 UAL2451 - Jul 19, 19:35 UTCJul 19, 21:55 UTC2h 20m
2026-07-19 UAL2124 - Jul 19, 15:15 UTCJul 19, 17:15 UTC2h 0m
2026-07-19 UAL320 - Jul 19, 11:40 UTCJul 19, 13:35 UTC1h 55m
2026-07-19 UAL320 DEN → IAH Jul 19, 11:38 UTCJul 19, 13:36 UTC1h 58m
2026-07-19 UAL495 BZN → EWR Jul 19, 07:30 UTCJul 19, 10:05 UTC2h 35m
2026-07-19 UAL495 BZN → EWR Jul 19, 07:00 UTCJul 19, 07:25 UTC25m
2026-07-18 UAL421 BDL → IAD Jul 18, 21:55 UTCJul 19, 00:45 UTC2h 50m
2026-07-18 UAL421 BDL → IAD Jul 18, 21:59 UTCJul 19, 00:53 UTC2h 54m
2026-07-18 UAL2061 SAN → EWR Jul 18, 18:25 UTCJul 18, 20:20 UTC1h 55m
2026-07-18 UAL2061 SAN → EWR Jul 18, 18:14 UTCJul 18, 20:17 UTC2h 3m
2026-07-18 UAL1638 DEN → LAX Jul 18, 14:25 UTCJul 18, 16:15 UTC1h 50m
2026-07-18 UAL1214 SFO → DEN Jul 18, 00:45 UTCJul 18, 02:45 UTC2h 0m
2026-07-17 UAL1450 EWR → PBI Jul 17, 19:05 UTCJul 17, 21:15 UTC2h 10m
2026-07-17 UAL1450 EWR → PBI Jul 17, 14:50 UTCJul 17, 16:40 UTC1h 50m
2026-07-17 UAL475 EWR → MCO Jul 17, 02:05 UTCJul 17, 03:59 UTC1h 55m
2026-07-16 UAL484 - Jul 16, 21:55 UTCJul 16, 23:55 UTC2h 0m
2026-07-16 UAL484 IAH → DEN Jul 16, 21:50 UTCJul 16, 23:48 UTC1h 58m
2026-07-16 UAL1599 - Jul 16, 18:00 UTCJul 16, 19:55 UTC1h 55m
2026-07-16 UAL1758 - Jul 16, 13:49 UTCJul 16, 15:55 UTC2h 5m

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 N14507 page for operator, model, and routing details .

Mode-S A0B7BB frequently asked

What is Mode-S code A0B7BB?
A0B7BB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14507.
Where is Mode-S A0B7BB registered?
Mode-S code A0B7BB 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 A0B7BB broadcasting right now?
Yes. Mode-S A0B7BB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B7BB, octal 50133673, decimal 10,532,795.
What flights does A0B7BB operate?
Mode-S A0B7BB has broadcast 20 distinct callsigns, including UAL2487, UAL1792, UAL540, UAL1414, UAL695.