Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC06F5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N874UA · AIRBUS A-319 · operated by UMB BANK NA TRUSTEE

Hex
AC06F5
Octal
53003365
Decimal
11,273,973
Country
US
Tail
N874UA
Type
A319
No current signal · last broadcast 3h ago
Flights observed
385
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AC06F5.

Country allocation

The ICAO 24-bit address AC06F5 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
UAL1840 United Airlines 8 2026-05-20
UAL568 - 6 2026-07-02
UAL456 - 6 2026-07-08
UAL1639 United Airlines 6 2026-06-04
UAL2852 - 5 2026-06-15
UAL1874 - 5 2026-07-02
UAL473 United Airlines 4 2026-04-27
UAL472 - 4 2026-07-04
UAL447 - 4 2026-06-30
UAL2187 - 4 2026-06-27
UAL792 United Airlines 3 2026-06-18
UAL652 - 3 2026-07-01
UAL314 - 3 2026-06-25
UAL2470 - 3 2026-07-06
UAL2468 United Airlines 3 2026-05-21
UAL2255 - 3 2026-07-03
UAL2173 - 3 2026-07-03
UAL2130 - 3 2026-07-03
UAL2030 United Airlines 3 2026-06-15
UAL1846 - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL2376 - Jul 14, 00:10 UTCJul 14, 01:50 UTC1h 40m
2026-07-13 UAL1211 - Jul 13, 20:10 UTCJul 13, 22:00 UTC1h 50m
2026-07-13 UAL2472 - Jul 13, 14:15 UTCJul 13, 18:30 UTC4h 15m
2026-07-13 UAL2472 YYC → IAH Jul 13, 14:19 UTCJul 13, 18:26 UTC4h 7m
2026-07-13 UAL738J - Jul 13, 01:15 UTCJul 13, 05:05 UTC3h 50m
2026-07-12 UAL750 - Jul 12, 20:20 UTCJul 12, 23:50 UTC3h 30m
2026-07-12 UAL537 - Jul 12, 15:10 UTCJul 12, 18:55 UTC3h 45m
2026-07-12 UAL2074 - Jul 12, 10:45 UTCJul 12, 13:05 UTC2h 20m
2026-07-12 UAL2498 - Jul 12, 01:15 UTCJul 12, 03:30 UTC2h 15m
2026-07-11 UAL1420 - Jul 11, 21:35 UTCJul 11, 23:55 UTC2h 20m
2026-07-11 UAL587C ORD → IND Jul 11, 20:00 UTCJul 11, 20:30 UTC30m
2026-07-11 UAL587C ORD → IND Jul 11, 19:45 UTCJul 11, 20:32 UTC47m
2026-07-11 UAL2437 - Jul 11, 17:00 UTCJul 11, 18:00 UTC1h 0m
2026-07-11 UAL1484 - Jul 11, 14:05 UTCJul 11, 15:10 UTC1h 5m
2026-07-11 UAL1486 - Jul 11, 11:30 UTCJul 11, 12:15 UTC45m
2026-07-10 UAL2790 - Jul 10, 23:40 UTCJul 11, 00:05 UTC25m
2026-07-10 UAL1531 MSP → ORD Jul 10, 20:35 UTCJul 10, 21:33 UTC58m
2026-07-10 UAL1531 MSP → ORD Jul 10, 20:50 UTCJul 10, 21:50 UTC1h 0m
2026-07-10 UAL2749 ORD → MSP Jul 10, 18:00 UTCJul 10, 19:10 UTC1h 10m
2026-07-10 UAL364 ATL → ORD Jul 10, 14:20 UTCJul 10, 16:00 UTC1h 40m
2026-07-10 UAL1287 - Jul 10, 01:45 UTCJul 10, 03:25 UTC1h 40m
2026-07-09 UAL1261 - Jul 9, 19:55 UTCJul 10, 00:15 UTC4h 20m
2026-07-09 UAL490 ORD → SAT Jul 9, 15:02 UTCJul 9, 17:07 UTC2h 5m
2026-07-09 UAL490 - Jul 9, 14:55 UTCJul 9, 17:10 UTC2h 15m
2026-07-09 UAL2638 DCA → ORD Jul 9, 11:30 UTCJul 9, 13:00 UTC1h 30m
2026-07-09 UAL2638 DCA → ORD Jul 9, 11:29 UTCJul 9, 12:52 UTC1h 23m
2026-07-08 UAL456 - Jul 8, 22:35 UTCJul 9, 00:00 UTC1h 25m
2026-07-08 UAL456 AUS → ORD Jul 8, 18:15 UTCJul 8, 20:30 UTC2h 15m
2026-07-08 UAL456 DEN → AUS Jul 8, 14:15 UTCJul 8, 16:00 UTC1h 45m
2026-07-08 UAL1268 BNA → DEN Jul 8, 00:10 UTCJul 8, 02:45 UTC2h 35m
2026-07-07 UAL1608 EWR → BNA Jul 7, 19:25 UTCJul 7, 21:30 UTC2h 5m
2026-07-07 UAL1637 MSP → EWR Jul 7, 15:33 UTCJul 7, 17:34 UTC2h 1m
2026-07-07 UAL1637 MSP → EWR Jul 7, 15:25 UTCJul 7, 17:40 UTC2h 15m
2026-07-06 UAL2470 DEN → MSP Jul 6, 22:10 UTCJul 6, 23:40 UTC1h 30m
2026-07-06 UAL1541 AUS → DEN Jul 6, 18:05 UTCJul 6, 19:50 UTC1h 45m
2026-07-06 UAL456 DEN → AUS Jul 6, 14:25 UTCJul 6, 16:05 UTC1h 40m
2026-07-06 UAL1235 - Jul 6, 10:50 UTCJul 6, 13:10 UTC2h 20m
2026-07-05 UAL1228 DEN → DAY Jul 5, 00:25 UTCJul 5, 02:45 UTC2h 20m
2026-07-04 UAL1662 EWR → SFO Jul 4, 20:51 UTCJul 4, 21:50 UTC59m
2026-07-04 UAL1662 EWR → SFO Jul 4, 20:50 UTCJul 4, 21:50 UTC1h 0m
2026-07-04 UAL1963 DEN → SLC Jul 4, 18:05 UTCJul 4, 19:05 UTC1h 0m
2026-07-04 UAL472 - Jul 4, 14:05 UTCJul 4, 16:25 UTC2h 20m
2026-07-03 UAL2130 - Jul 3, 23:50 UTCJul 4, 01:45 UTC1h 55m
2026-07-03 UAL696 - Jul 3, 20:00 UTCJul 3, 22:10 UTC2h 10m
2026-07-03 UAL1836 - Jul 3, 16:20 UTCJul 3, 18:35 UTC2h 15m
2026-07-03 UAL1836 DEN → MKE Jul 3, 16:18 UTCJul 3, 18:30 UTC2h 12m
2026-07-03 UAL2255 - Jul 3, 13:45 UTCJul 3, 14:05 UTC20m
2026-07-03 UAL2173 - Jul 3, 01:40 UTCJul 3, 01:55 UTC15m
2026-07-02 UAL568 YYZ → DEN Jul 2, 20:45 UTCJul 2, 23:45 UTC3h 0m
2026-07-02 UAL1874 DEN → YYZ Jul 2, 16:20 UTCJul 2, 18:55 UTC2h 35m

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 N874UA page for operator, model, and routing details .

Mode-S AC06F5 frequently asked

What is Mode-S code AC06F5?
AC06F5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N874UA.
Where is Mode-S AC06F5 registered?
Mode-S code AC06F5 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 AC06F5 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC06F5, octal 53003365, decimal 11,273,973.
What flights does AC06F5 operate?
Mode-S AC06F5 has broadcast 20 distinct callsigns, including UAL1840, UAL568, UAL456, UAL1639, UAL2852.