Apparatus

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sensors Mode-S transponder

AA9B82

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78285 · BOEING 737-800 · operated by UMB BANK N A TRUSTEE

Hex
AA9B82
Octal
52515602
Decimal
11,180,930
Country
US
Tail
N78285
Type
B738
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
271
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S AA9B82.

Country allocation

The ICAO 24-bit address AA9B82 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
UAL1821 - 5 2026-07-12
UAL2745 United Airlines 4 2026-07-23
UAL2000 - 4 2026-07-07
UAL2665 United Airlines 3 2026-05-22
UAL2655 United Airlines 3 2026-05-20
UAL2443 United Airlines 3 2026-05-05
UAL2422 United Airlines 3 2026-05-13
UAL2299 United Airlines 3 2026-05-12
UAL1968 United Airlines 3 2026-05-19
UAL1657 - 3 2026-07-12
UAL1580 - 3 2026-07-07
UAL1156 - 3 2026-06-18
UAL8177 United Airlines 2 2026-05-09
UAL8145 - 2 2026-07-03
UAL763 - 2 2026-07-20
UAL652 - 2 2026-07-04
UAL618 - 2 2026-06-24
UAL600 United Airlines 2 2026-05-20
UAL586 United Airlines 2 2026-07-23
UAL517 - 2 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1242 SAP → IAH Jul 26, 15:20 UTCJul 26, 22:00 UTC6h 40m
2026-07-26 UAL2371 DFW → SFO Jul 26, 10:15 UTCJul 26, 13:15 UTC3h 0m
2026-07-26 UAL2371 DFW → SFO Jul 26, 10:15 UTCJul 26, 13:21 UTC3h 6m
2026-07-25 UAL334 BOS → EWR Jul 25, 22:00 UTCJul 26, 01:10 UTC3h 10m
2026-07-25 UAL334 BOS → EWR Jul 25, 22:01 UTCJul 26, 01:05 UTC3h 4m
2026-07-24 UAL1911 IAD → EWR Jul 24, 21:55 UTCJul 25, 00:35 UTC2h 40m
2026-07-24 UAL275 EWR → SFO Jul 24, 19:55 UTCJul 24, 20:10 UTC15m
2026-07-24 UAL275 EWR → SFO Jul 24, 17:50 UTCJul 24, 18:20 UTC30m
2026-07-24 UAL2141 PHX → SFO Jul 24, 13:40 UTCJul 24, 15:00 UTC1h 20m
2026-07-24 UAL2109 PIT → DEN Jul 24, 02:45 UTCJul 24, 03:50 UTC1h 5m
2026-07-24 UAL2109 PIT → DEN Jul 24, 02:22 UTCJul 24, 04:31 UTC2h 9m
2026-07-24 UAL1326 SFO → BNA Jul 24, 00:00 UTCJul 24, 00:50 UTC50m
2026-07-23 UAL2270 LAS → IAH Jul 23, 20:50 UTCJul 23, 22:40 UTC1h 50m
2026-07-23 UAL586 DEN → MCI Jul 23, 15:50 UTCJul 23, 18:00 UTC2h 10m
2026-07-23 UAL2745 HNL → SFO Jul 23, 06:05 UTCJul 23, 08:05 UTC2h 0m
2026-07-23 UAL2745 HNL → SFO Jul 23, 06:00 UTCJul 23, 08:05 UTC2h 5m
2026-07-23 UAL1781 EWR → CHS Jul 23, 02:15 UTCJul 23, 04:15 UTC2h 0m
2026-07-22 UAL1311 EWR → CLT Jul 22, 19:40 UTCJul 22, 20:55 UTC1h 15m
2026-07-22 UAL2375 PHL → ORD Jul 22, 16:00 UTCJul 22, 18:10 UTC2h 10m
2026-07-21 UAL2817 - Jul 21, 18:45 UTCJul 21, 22:35 UTC3h 50m
2026-07-21 UAL1297 LAS → EWR Jul 21, 12:15 UTCJul 21, 14:25 UTC2h 10m
2026-07-21 UAL1989 ORD → RDU Jul 21, 00:55 UTCJul 21, 02:30 UTC1h 35m
2026-07-20 UAL1325 DCA → ORD Jul 20, 21:05 UTCJul 20, 22:35 UTC1h 30m
2026-07-20 UAL2668 OMA → ORD Jul 20, 16:44 UTCJul 20, 18:24 UTC1h 40m
2026-07-20 UAL763 YYZ → ORD Jul 20, 13:12 UTCJul 20, 14:01 UTC49m
2026-07-20 UAL763 YYZ → ORD Jul 20, 13:05 UTCJul 20, 14:25 UTC1h 20m
2026-07-20 UAL436 SFO → BWI Jul 20, 07:05 UTCJul 20, 11:20 UTC4h 15m
2026-07-20 UAL1267 EWR → ANC Jul 20, 04:15 UTCJul 20, 05:20 UTC1h 5m
2026-07-20 UAL2338 PSP → SFO Jul 20, 01:00 UTCJul 20, 02:25 UTC1h 25m
2026-07-19 UAL1843 - Jul 19, 21:45 UTCJul 19, 23:20 UTC1h 35m
2026-07-19 UAL1294 DEN → YEG Jul 19, 18:50 UTCJul 19, 20:15 UTC1h 25m
2026-07-19 UAL2789 - Jul 19, 16:35 UTCJul 19, 17:40 UTC1h 5m
2026-07-19 UAL2166 DEN → ICT Jul 19, 01:05 UTCJul 19, 02:05 UTC1h 0m
2026-07-18 UAL517 - Jul 18, 19:45 UTCJul 18, 23:30 UTC3h 45m
2026-07-18 UAL517 BTV → DEN Jul 18, 19:47 UTCJul 18, 23:29 UTC3h 42m
2026-07-18 UAL786 - Jul 18, 16:35 UTCJul 18, 18:10 UTC1h 35m
2026-07-18 UAL466 - Jul 18, 14:00 UTCJul 18, 14:50 UTC50m
2026-07-18 UAL2086 - Jul 18, 02:00 UTCJul 18, 04:05 UTC2h 6m
2026-07-18 UAL2086 IAH → CMH Jul 18, 02:00 UTCJul 18, 04:05 UTC2h 5m
2026-07-17 UAL1696 - Jul 17, 22:20 UTCJul 18, 00:29 UTC2h 10m
2026-07-17 UAL2188 DEN → FLL Jul 17, 17:15 UTCJul 17, 20:44 UTC3h 30m
2026-07-17 UAL318 RSW → DEN Jul 17, 12:04 UTCJul 17, 15:35 UTC3h 30m
2026-07-16 UAL2348 DEN → RSW Jul 16, 22:40 UTCJul 17, 01:55 UTC3h 15m
2026-07-14 UAL1787 PDX → DEN Jul 14, 23:20 UTCJul 15, 01:30 UTC2h 10m
2026-07-14 UAL2455 DEN → PDX Jul 14, 19:45 UTCJul 14, 21:50 UTC2h 5m
2026-07-14 UAL347 - Jul 14, 16:20 UTCJul 14, 18:10 UTC1h 50m
2026-07-14 UAL719 - Jul 14, 01:50 UTCJul 14, 03:05 UTC1h 15m
2026-07-13 UAL2085 - Jul 13, 21:45 UTCJul 14, 00:05 UTC2h 20m
2026-07-13 UAL2051 SFO → YVR Jul 13, 18:25 UTCJul 13, 20:10 UTC1h 45m
2026-07-13 UAL565 YYZ → SFO Jul 13, 10:55 UTCJul 13, 15:55 UTC5h 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 N78285 page for operator, model, and routing details .

Mode-S AA9B82 frequently asked

What is Mode-S code AA9B82?
AA9B82 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78285.
Where is Mode-S AA9B82 registered?
Mode-S code AA9B82 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 AA9B82 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9B82, octal 52515602, decimal 11,180,930.
What flights does AA9B82 operate?
Mode-S AA9B82 has broadcast 20 distinct callsigns, including UAL1821, UAL2745, UAL2000, UAL2665, UAL2655.