Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A2B196

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N27290 · operated by UNITED AIRLINES INC

Hex
A2B196
Octal
50530626
Decimal
10,662,294
Country
US
Tail
N27290
Type
B38M
Broadcasting now · callsign UAL608 · 37,000 ft
Flights observed
443
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:45 UTC

Current position

A2B196 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2B196 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
UAL508 United Airlines 6 2026-06-08
UAL1864 - 6 2026-07-22
UAL81 - 5 2026-07-12
UAL278 United Airlines 5 2026-06-08
UAL2663 United Airlines 5 2026-05-07
UAL2021 - 5 2026-06-18
UAL1784 - 5 2026-06-27
UAL523 - 4 2026-07-08
UAL522 - 4 2026-07-08
UAL450 - 4 2026-07-19
UAL2410 United Airlines 4 2026-05-17
UAL2312 United Airlines 4 2026-04-28
UAL209 - 4 2026-06-16
UAL1798 United Airlines 4 2026-05-28
UAL1749 United Airlines 4 2026-04-29
UAL1378 United Airlines 4 2026-07-23
UAL1210 United Airlines 4 2026-04-15
UAL1172 United Airlines 4 2026-07-26
UAL1086 United Airlines 4 2026-05-07
UAL1079 United Airlines 4 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1699 SLC → SFO Jul 26, 16:20 UTCJul 26, 19:45 UTC3h 25m
2026-07-26 UAL1774 ORD → EWR Jul 26, 12:10 UTCJul 26, 14:00 UTC1h 50m
2026-07-26 UAL1172 BOS → SFO Jul 26, 01:45 UTCJul 26, 03:30 UTC1h 45m
2026-07-26 UAL1172 BOS → SFO Jul 26, 01:51 UTCJul 26, 03:32 UTC1h 41m
2026-07-25 UAL2660 TPA → EWR Jul 25, 20:42 UTCJul 25, 23:40 UTC2h 58m
2026-07-25 UAL2660 TPA → EWR Jul 25, 20:35 UTCJul 26, 00:10 UTC3h 35m
2026-07-25 UAL8155 CDG → YYZ Jul 25, 16:15 UTCJul 25, 19:10 UTC2h 55m
2026-07-25 UAL8155 CDG → YYZ Jul 25, 16:03 UTCJul 25, 19:11 UTC3h 8m
2026-07-24 UAL2821 HNL → EWR Jul 24, 20:10 UTCJul 24, 22:30 UTC2h 20m
2026-07-24 UAL1522 FLL → EWR Jul 24, 17:00 UTCJul 24, 18:50 UTC1h 50m
2026-07-24 UA3926 - Jul 24, 15:10 UTCJul 24, 15:40 UTC30m
2026-07-23 UAL1378 JAC → DEN Jul 23, 17:30 UTCJul 23, 17:45 UTC15m
2026-07-23 UAL690 SEA → SFO Jul 23, 12:55 UTCJul 23, 15:45 UTC2h 50m
2026-07-23 UAL690 SEA → SFO Jul 23, 13:09 UTCJul 23, 15:45 UTC2h 36m
2026-07-22 UAL8233 LGA → YYZ Jul 22, 12:50 UTCJul 22, 14:00 UTC1h 10m
2026-07-22 UAL1681 JAC → SFO Jul 22, 10:20 UTCJul 22, 11:25 UTC1h 5m
2026-07-22 UAL1864 - Jul 22, 00:15 UTCJul 22, 05:10 UTC4h 55m
2026-07-21 UAL1969 EWR → IAH Jul 21, 13:45 UTCJul 21, 16:30 UTC2h 45m
2026-07-21 UAL1969 EWR → IAH Jul 21, 13:35 UTCJul 21, 16:29 UTC2h 54m
2026-07-21 UAL1399 LAX → SFO Jul 21, 02:15 UTCJul 21, 04:50 UTC2h 35m
2026-07-21 UAL1399 LAX → SFO Jul 21, 02:08 UTCJul 21, 04:55 UTC2h 47m
2026-07-20 UAL1731 - Jul 20, 20:30 UTCJul 21, 00:50 UTC4h 19m
2026-07-20 UAL1631 SFO → ABQ Jul 20, 14:20 UTCJul 20, 19:05 UTC4h 45m
2026-07-20 UAL363 EWR → HNL Jul 20, 06:00 UTCJul 20, 12:30 UTC6h 30m
2026-07-19 UAL450 EWR → ANC Jul 19, 21:00 UTCJul 20, 04:30 UTC7h 30m
2026-07-19 UAL3033 IAD → EWR Jul 19, 16:50 UTCJul 19, 17:30 UTC40m
2026-07-19 UAL2125 BNA → IAD Jul 19, 00:30 UTCJul 19, 01:50 UTC1h 20m
2026-07-18 UAL2414 ORD → BNA Jul 18, 16:40 UTCJul 18, 17:40 UTC1h 0m
2026-07-18 UAL834 ANC → ORD Jul 18, 09:40 UTCJul 18, 15:15 UTC5h 35m
2026-07-18 UAL400 - Jul 18, 02:55 UTCJul 18, 07:55 UTC5h 0m
2026-07-18 UAL400 DEN → ANC Jul 18, 02:50 UTCJul 18, 07:49 UTC4h 59m
2026-07-17 UAL235 ATL → DEN Jul 17, 21:50 UTCJul 18, 00:35 UTC2h 45m
2026-07-17 UAL235 ATL → DEN Jul 17, 20:58 UTCJul 18, 00:30 UTC3h 32m
2026-07-17 UAL2424 DEN → ATL Jul 17, 16:24 UTCJul 17, 19:40 UTC3h 15m
2026-07-17 UAL2424 DEN → ATL Jul 17, 16:21 UTCJul 17, 19:21 UTC3h 0m
2026-07-17 UAL2446 - Jul 17, 12:10 UTCJul 17, 14:00 UTC1h 50m
2026-07-17 UAL2028 PHX → DEN Jul 17, 02:59 UTCJul 17, 04:59 UTC2h 0m
2026-07-17 UAL2028 PHX → DEN Jul 17, 02:55 UTCJul 17, 04:51 UTC1h 56m
2026-07-16 UAL1430 OGG → DEN Jul 16, 23:36 UTCJul 17, 01:38 UTC2h 2m
2026-07-16 UAL1430 OGG → DEN Jul 16, 23:29 UTCJul 17, 01:39 UTC2h 10m
2026-07-16 UAL1958 - Jul 16, 21:00 UTCJul 16, 21:40 UTC40m
2026-07-16 UAL1124 - Jul 16, 07:35 UTCJul 16, 07:45 UTC10m
2026-07-16 UAL1124 SFO → OGG Jul 16, 02:59 UTCJul 16, 07:42 UTC4h 43m
2026-07-16 UAL1124 - Jul 16, 02:55 UTCJul 16, 03:25 UTC30m
2026-07-15 UAL2866 - Jul 15, 23:05 UTCJul 16, 00:55 UTC1h 50m
2026-07-15 UAL2866 SEA → SFO Jul 15, 22:54 UTCJul 16, 00:50 UTC1h 56m
2026-07-15 UAL2744 SFO → SEA Jul 15, 19:35 UTCJul 15, 21:00 UTC1h 25m
2026-07-15 UAL1257 - Jul 15, 12:15 UTCJul 15, 17:35 UTC5h 20m
2026-07-15 UAL2180 - Jul 15, 00:20 UTCJul 15, 03:05 UTC2h 45m
2026-07-14 UAL2202 - Jul 14, 14:45 UTCJul 14, 21:45 UTC7h 0m

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 N27290 page for operator, model, and routing details .

Mode-S A2B196 frequently asked

What is Mode-S code A2B196?
A2B196 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N27290.
Where is Mode-S A2B196 registered?
Mode-S code A2B196 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 A2B196 broadcasting right now?
Yes. Mode-S A2B196 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B196, octal 50530626, decimal 10,662,294.
What flights does A2B196 operate?
Mode-S A2B196 has broadcast 20 distinct callsigns, including UAL508, UAL1864, UAL81, UAL278, UAL2663.