Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABB089

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N852UA · AIRBUS A-319 · operated by UNITED AIRLINES INC

Hex
ABB089
Octal
52730211
Decimal
11,251,849
Country
US
Tail
N852UA
Type
A319
No current signal · last broadcast Jul 25, 14:50 UTC
Flights observed
503
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 14:50 UTC

Last known position

Most recent position reported by Mode-S ABB089.

Country allocation

The ICAO 24-bit address ABB089 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
UAL1365 - 8 2026-06-25
UAL393 - 6 2026-07-20
UAL298 United Airlines 6 2026-05-07
UAL1991 - 6 2026-07-11
UAL1228 United Airlines 6 2026-07-21
UAL375 United Airlines 5 2026-04-27
UAL2856 United Airlines 5 2026-04-25
UAL2394 - 5 2026-06-27
UAL1536 United Airlines 5 2026-05-15
UAL652 United Airlines 4 2026-06-03
UAL456 - 4 2026-07-12
UAL454 United Airlines 4 2026-04-25
UAL2728 United Airlines 4 2026-06-21
UAL2296 - 4 2026-07-09
UAL2112 United Airlines 4 2026-05-15
UAL1711 United Airlines 4 2026-07-22
UAL1541 - 4 2026-07-12
UAL1451 - 4 2026-06-28
UAL1282 - 4 2026-07-14
UAL1262 - 4 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UAL3938 SEA → SFO Jul 25, 12:25 UTCJul 25, 14:45 UTC2h 20m
2026-07-25 UAL3938 SEA → SFO Jul 25, 12:32 UTCJul 25, 14:45 UTC2h 13m
2026-07-24 UAL1479 IAD → EWR Jul 24, 16:00 UTCJul 24, 18:15 UTC2h 15m
2026-07-24 UAL2255 MSO → DEN Jul 24, 14:10 UTCJul 24, 14:35 UTC25m
2026-07-24 UAL2173 MYR → ORD Jul 24, 01:50 UTCJul 24, 02:05 UTC15m
2026-07-24 UAL568 IAH → SFO Jul 24, 00:15 UTCJul 24, 00:30 UTC15m
2026-07-23 UAL568 IAH → SFO Jul 23, 20:50 UTCJul 24, 00:15 UTC3h 25m
2026-07-23 UAL568 IAH → SFO Jul 23, 20:49 UTCJul 23, 23:58 UTC3h 9m
2026-07-23 UAL1874 SFO → IND Jul 23, 16:25 UTCJul 23, 19:05 UTC2h 40m
2026-07-23 UAL225 ATL → DEN Jul 23, 12:35 UTCJul 23, 14:25 UTC1h 50m
2026-07-23 UAL2852 EWR → DEN Jul 23, 05:05 UTCJul 23, 06:55 UTC1h 50m
2026-07-23 UAL439 EWR → GRR Jul 23, 01:20 UTCJul 23, 03:30 UTC2h 10m
2026-07-22 UAL1711 SFO → CLE Jul 22, 22:10 UTCJul 22, 22:35 UTC25m
2026-07-22 UAL2079 SFO → BOS Jul 22, 18:10 UTCJul 22, 19:30 UTC1h 20m
2026-07-22 UAL2079 SFO → BOS Jul 22, 17:57 UTCJul 22, 19:29 UTC1h 32m
2026-07-22 UAL2068 - Jul 22, 14:55 UTCJul 22, 16:05 UTC1h 10m
2026-07-22 UAL2068 IAH → QRO Jul 22, 14:57 UTCJul 22, 16:29 UTC1h 32m
2026-07-22 UAL1871 MCO → EWR Jul 22, 00:50 UTCJul 22, 01:25 UTC35m
2026-07-21 UAL1899 ORD → YYC Jul 21, 22:00 UTCJul 21, 23:45 UTC1h 45m
2026-07-21 UAL2033 RNO → SFO Jul 21, 19:45 UTCJul 21, 20:10 UTC25m
2026-07-21 UAL2045 TPA → EWR Jul 21, 17:35 UTCJul 21, 17:50 UTC15m
2026-07-21 UAL1235 - Jul 21, 13:00 UTCJul 21, 15:35 UTC2h 35m
2026-07-21 UAL1228 CVG → ORD Jul 21, 01:30 UTCJul 21, 03:45 UTC2h 15m
2026-07-20 UAL314 DEN → EWR Jul 20, 20:00 UTCJul 20, 22:40 UTC2h 40m
2026-07-20 UAL314 DEN → EWR Jul 20, 19:53 UTCJul 20, 22:37 UTC2h 44m
2026-07-20 UAL1464 EWR → FLL Jul 20, 15:55 UTCJul 20, 18:25 UTC2h 30m
2026-07-20 UAL393 BFL → DEN Jul 20, 12:10 UTCJul 20, 14:10 UTC2h 0m
2026-07-20 UAL1322 SFO → RNO Jul 20, 01:35 UTCJul 20, 03:30 UTC1h 55m
2026-07-19 UAL2325 ORD → PHL Jul 19, 20:30 UTCJul 19, 22:40 UTC2h 10m
2026-07-19 UAL2273 DEN → MSY Jul 19, 16:51 UTCJul 19, 19:16 UTC2h 25m
2026-07-19 UAL2273 DEN → MSY Jul 19, 16:50 UTCJul 19, 19:20 UTC2h 30m
2026-07-19 UAL1765 - Jul 19, 12:45 UTCJul 19, 15:35 UTC2h 50m
2026-07-19 UAL2155 DEN → PIT Jul 19, 00:10 UTCJul 19, 02:50 UTC2h 40m
2026-07-18 UAL2325 ORD → PHL Jul 18, 19:45 UTCJul 18, 22:05 UTC2h 20m
2026-07-18 UAL2273 DEN → MSY Jul 18, 16:20 UTCJul 18, 18:40 UTC2h 20m
2026-07-16 UAL1262 OKC → DEN Jul 16, 23:10 UTCJul 17, 00:20 UTC1h 10m
2026-07-16 UAL2750 DEN → OKC Jul 16, 20:00 UTCJul 16, 21:15 UTC1h 15m
2026-07-16 UAL1521 DSM → DEN Jul 16, 14:40 UTCJul 16, 16:05 UTC1h 25m
2026-07-16 UAL549 DEN → DSM Jul 16, 00:03 UTCJul 16, 01:05 UTC1h 2m
2026-07-15 UAL549 DEN → DSM Jul 15, 23:50 UTCJul 16, 01:10 UTC1h 20m
2026-07-15 UAL2128 DEN → DEN Jul 15, 18:10 UTCJul 15, 22:35 UTC4h 25m
2026-07-15 UAL1081 - Jul 15, 14:15 UTCJul 15, 15:55 UTC1h 40m
2026-07-14 UAL1282 - Jul 14, 23:40 UTCJul 15, 01:10 UTC1h 30m
2026-07-14 UAL2049 DFW → DEN Jul 14, 17:00 UTCJul 14, 18:35 UTC1h 35m
2026-07-14 UAL2160 DEN → DFW Jul 14, 13:45 UTCJul 14, 15:10 UTC1h 25m
2026-07-14 UAL1602 DFW → DEN Jul 14, 02:40 UTCJul 14, 04:15 UTC1h 35m
2026-07-13 UAL1439 - Jul 13, 23:20 UTCJul 14, 00:05 UTC45m
2026-07-13 UAL2079 - Jul 13, 14:50 UTCJul 13, 19:45 UTC4h 55m
2026-07-13 UAL1085 - Jul 13, 11:00 UTCJul 13, 12:45 UTC1h 45m
2026-07-13 UAL1085 MEX → IAH Jul 13, 11:04 UTCJul 13, 12:45 UTC1h 41m

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 N852UA page for operator, model, and routing details .

Mode-S ABB089 frequently asked

What is Mode-S code ABB089?
ABB089 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N852UA.
Where is Mode-S ABB089 registered?
Mode-S code ABB089 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 ABB089 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 14:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB089, octal 52730211, decimal 11,251,849.
What flights does ABB089 operate?
Mode-S ABB089 has broadcast 20 distinct callsigns, including UAL1365, UAL393, UAL298, UAL1991, UAL1228.