Apparatus

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sensors Mode-S transponder

AB8CC1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N843UA · AIRBUS A-319 · operated by UNITED AIRLINES INC

Hex
AB8CC1
Octal
52706301
Decimal
11,242,689
Country
US
Tail
N843UA
Type
A319
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
516
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AB8CC1.

Country allocation

The ICAO 24-bit address AB8CC1 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
UAL482 - 7 2026-06-27
UAL576 United Airlines 6 2026-05-30
UAL2272 United Airlines 6 2026-04-29
UAL2148 United Airlines 6 2026-06-02
UAL1314 United Airlines 6 2026-06-02
UAL762 United Airlines 5 2026-05-09
UAL433 United Airlines 5 2026-04-28
UAL2797 - 5 2026-06-23
UAL2190 - 5 2026-06-18
UAL2045 United Airlines 5 2026-06-03
UAL1711 United Airlines 5 2026-07-25
UAL1226 United Airlines 5 2026-07-23
UAL2669 United Airlines 4 2026-07-23
UAL2255 - 4 2026-07-07
UAL2198 - 4 2026-07-11
UAL2173 - 4 2026-07-07
UAL1848 United Airlines 4 2026-07-23
UAL1728 - 4 2026-07-05
UAL1688 United Airlines 4 2026-04-15
UAL1597 United Airlines 4 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL286 CLE → DEN Jul 26, 22:10 UTCJul 26, 22:15 UTC5m
2026-07-26 UAL1155 DEN → IND Jul 26, 16:45 UTCJul 26, 19:55 UTC3h 10m
2026-07-26 UAL2690 LAS → IAH Jul 26, 13:20 UTCJul 26, 15:00 UTC1h 40m
2026-07-26 UAL2784 GUM → SFO Jul 26, 00:00 UTCJul 26, 00:55 UTC55m
2026-07-25 UAL1531 ORD → CMH Jul 25, 21:00 UTCJul 25, 21:55 UTC55m
2026-07-25 UAL2749 LAS → SFO Jul 25, 18:00 UTCJul 25, 18:55 UTC55m
2026-07-25 UAL1448 SAN → SFO Jul 25, 14:10 UTCJul 25, 15:50 UTC1h 40m
2026-07-25 UAL1890 LAX → EWR Jul 25, 11:40 UTCJul 25, 12:55 UTC1h 15m
2026-07-25 UAL1711 SFO → CLE Jul 25, 00:25 UTCJul 25, 03:45 UTC3h 20m
2026-07-24 UAL2289 PDX → SFO Jul 24, 19:30 UTCJul 24, 22:45 UTC3h 15m
2026-07-24 UAL1637 PHX → EWR Jul 24, 15:50 UTCJul 24, 17:50 UTC2h 0m
2026-07-24 UAL2183 SFO → EWR Jul 24, 12:25 UTCJul 24, 14:55 UTC2h 30m
2026-07-24 UAL1525 RDU → EWR Jul 24, 10:20 UTCJul 24, 11:15 UTC55m
2026-07-24 UAL1233 ORD → SFO Jul 24, 03:05 UTCJul 24, 04:10 UTC1h 5m
2026-07-23 UAL1152 EWR → ATL Jul 23, 23:50 UTCJul 24, 01:35 UTC1h 45m
2026-07-23 UAL1848 MCO → SFO Jul 23, 20:15 UTCJul 23, 22:00 UTC1h 45m
2026-07-23 UAL1226 EWR → LAX Jul 23, 16:59 UTCJul 23, 18:39 UTC1h 40m
2026-07-23 UAL1226 EWR → LAX Jul 23, 17:00 UTCJul 23, 18:40 UTC1h 40m
2026-07-23 UAL2669 SAT → SFO Jul 23, 13:10 UTCJul 23, 15:00 UTC1h 50m
2026-07-23 UAL1525 - Jul 23, 10:35 UTCJul 23, 11:35 UTC1h 0m
2026-07-23 UAL1233 ORD → SFO Jul 23, 00:55 UTCJul 23, 02:10 UTC1h 15m
2026-07-23 UAL1233 ORD → SFO Jul 23, 00:40 UTCJul 23, 02:04 UTC1h 24m
2026-07-22 UAL555 EUG → SFO Jul 22, 21:40 UTCJul 22, 23:30 UTC1h 50m
2026-07-22 UAL1307 EWR → BUF Jul 22, 18:30 UTCJul 22, 20:15 UTC1h 45m
2026-07-22 UAL2394 BOS → EWR Jul 22, 16:20 UTCJul 22, 17:15 UTC55m
2026-07-22 UAL2394 BOS → EWR Jul 22, 16:14 UTCJul 22, 17:06 UTC52m
2026-07-22 UAL1110 IAD → SFO Jul 22, 12:59 UTCJul 22, 13:36 UTC37m
2026-07-22 UAL1110 IAD → SFO Jul 22, 12:55 UTCJul 22, 13:40 UTC45m
2026-07-22 UAL3033 - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-21 UAL1435 SFO → IAH Jul 21, 17:30 UTCJul 21, 21:40 UTC4h 10m
2026-07-21 UAL1435 SFO → IAH Jul 21, 16:49 UTCJul 21, 21:35 UTC4h 46m
2026-07-21 UAL2035 LAX → SFO Jul 21, 10:25 UTCJul 21, 12:15 UTC1h 50m
2026-07-21 UAL2035 LAX → SFO Jul 21, 10:24 UTCJul 21, 13:38 UTC3h 14m
2026-07-21 UAL1152 ATL → EWR Jul 21, 00:05 UTCJul 21, 01:55 UTC1h 50m
2026-07-20 UAL1848 EWR → ATL Jul 20, 20:10 UTCJul 20, 22:00 UTC1h 50m
2026-07-20 UAL1226 ATL → EWR Jul 20, 16:55 UTCJul 20, 18:45 UTC1h 50m
2026-07-20 UAL2669 SAT → SFO Jul 20, 13:09 UTCJul 20, 14:37 UTC1h 28m
2026-07-20 UAL2669 SAT → SFO Jul 20, 12:55 UTCJul 20, 14:40 UTC1h 45m
2026-07-20 UAL1525 - Jul 20, 10:40 UTCJul 20, 11:40 UTC1h 0m
2026-07-20 UAL1233 ORD → SFO Jul 20, 02:10 UTCJul 20, 03:30 UTC1h 20m
2026-07-19 UAL2359 IAD → BDL Jul 19, 17:50 UTCJul 19, 22:20 UTC4h 30m
2026-07-19 UAL1613 EWR → FLL Jul 19, 10:50 UTCJul 19, 16:10 UTC5h 20m
2026-07-16 UAL1261 SAT → EWR Jul 16, 19:30 UTCJul 16, 22:59 UTC3h 30m
2026-07-16 UAL591 - Jul 16, 13:40 UTCJul 16, 16:55 UTC3h 15m
2026-07-16 UAL299 ATL → EWR Jul 16, 10:40 UTCJul 16, 12:25 UTC1h 45m
2026-07-16 UAL1287 EWR → ATL Jul 16, 00:30 UTCJul 16, 02:05 UTC1h 35m
2026-07-16 UAL1287 EWR → ATL Jul 16, 00:38 UTCJul 16, 02:03 UTC1h 25m
2026-07-15 UAL555 ATL → EWR Jul 15, 20:50 UTCJul 15, 23:25 UTC2h 35m
2026-07-15 UAL1307 - Jul 15, 17:25 UTCJul 15, 19:00 UTC1h 35m
2026-07-15 UAL1365 - Jul 15, 14:15 UTCJul 15, 15:35 UTC1h 20m

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 N843UA page for operator, model, and routing details .

Mode-S AB8CC1 frequently asked

What is Mode-S code AB8CC1?
AB8CC1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N843UA.
Where is Mode-S AB8CC1 registered?
Mode-S code AB8CC1 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 AB8CC1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB8CC1, octal 52706301, decimal 11,242,689.
What flights does AB8CC1 operate?
Mode-S AB8CC1 has broadcast 20 distinct callsigns, including UAL482, UAL576, UAL2272, UAL2148, UAL1314.