Apparatus

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sensors Mode-S transponder

A6045D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N487UA · AIRBUS A-320 · operated by UNITED AIRLINES INC

Hex
A6045D
Octal
51402135
Decimal
10,880,093
Country
US
Tail
N487UA
Type
A320
Broadcasting now · callsign UAL1934 · 13,750 ft
Flights observed
461
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A6045D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A6045D 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
UAL817 - 7 2026-07-09
UAL739 United Airlines 6 2026-06-15
UAL1655 United Airlines 6 2026-06-29
UAL764 - 5 2026-06-29
UAL718 - 5 2026-07-09
UAL697 - 5 2026-06-20
UAL2225 - 5 2026-06-30
UAL1438 United Airlines 5 2026-05-01
UAL626 - 4 2026-07-09
UAL606 United Airlines 4 2026-05-06
UAL466 United Airlines 4 2026-06-13
UAL2850 United Airlines 4 2026-05-29
UAL2634 - 4 2026-06-29
UAL2602 - 4 2026-07-03
UAL1671 - 4 2026-06-28
UAL1413 United Airlines 4 2026-05-16
UAL1376 United Airlines 4 2026-04-15
UAL1314 United Airlines 4 2026-04-21
UAL1285 - 4 2026-06-20
UAL1088 United Airlines 4 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL1747 - Jul 14, 17:45 UTCJul 14, 18:25 UTC40m
2026-07-14 UAL8123 IAH → AUS Jul 14, 15:30 UTCJul 14, 16:05 UTC35m
2026-07-14 UAL8123 IAH → AUS Jul 14, 15:39 UTCJul 14, 16:01 UTC22m
2026-07-14 UAL1345 - Jul 14, 10:35 UTCJul 14, 13:35 UTC3h 0m
2026-07-13 UAL1094 DEN → YYZ Jul 13, 22:45 UTCJul 14, 01:40 UTC2h 55m
2026-07-13 UAL2193 DEN → DEN Jul 13, 18:00 UTCJul 13, 21:15 UTC3h 15m
2026-07-13 UAL1045 - Jul 13, 14:25 UTCJul 13, 15:45 UTC1h 20m
2026-07-13 UAL1351 DEN → XNA Jul 13, 00:15 UTCJul 13, 01:35 UTC1h 20m
2026-07-12 UAL2671 - Jul 12, 20:55 UTCJul 12, 22:25 UTC1h 30m
2026-07-12 UAL1188 DEN → TUS Jul 12, 17:50 UTCJul 12, 19:15 UTC1h 25m
2026-07-12 UAL1610 - Jul 12, 15:10 UTCJul 12, 16:30 UTC1h 20m
2026-07-12 UAL1126 DEN → FAR Jul 12, 00:10 UTCJul 12, 01:35 UTC1h 25m
2026-07-11 UAL1766 BNA → DEN Jul 11, 20:10 UTCJul 11, 22:30 UTC2h 20m
2026-07-11 UAL1048 DEN → BNA Jul 11, 16:35 UTCJul 11, 18:45 UTC2h 10m
2026-07-11 UAL1846 - Jul 11, 12:10 UTCJul 11, 14:35 UTC2h 25m
2026-07-11 UAL1220 DEN → DTW Jul 11, 01:45 UTCJul 11, 04:01 UTC2h 15m
2026-07-10 UAL2132 - Jul 10, 20:10 UTCJul 10, 22:05 UTC1h 55m
2026-07-10 UAL643 - Jul 10, 17:45 UTCJul 10, 18:50 UTC1h 5m
2026-07-10 UAL2051 - Jul 10, 12:45 UTCJul 10, 16:05 UTC3h 20m
2026-07-10 UAL1763 SFO → OMA Jul 10, 02:00 UTCJul 10, 04:55 UTC2h 55m
2026-07-10 UAL357 BUR → SFO Jul 10, 00:05 UTCJul 10, 01:05 UTC1h 0m
2026-07-09 UAL626 - Jul 9, 21:40 UTCJul 9, 22:30 UTC50m
2026-07-09 UAL626 SFO → BUR Jul 9, 21:12 UTCJul 9, 22:23 UTC1h 11m
2026-07-09 UAL718 - Jul 9, 14:00 UTCJul 9, 18:00 UTC4h 0m
2026-07-09 UAL718 MEX → SFO Jul 9, 13:54 UTCJul 9, 17:55 UTC4h 1m
2026-07-09 UAL817 - Jul 9, 02:10 UTCJul 9, 02:25 UTC15m
2026-07-08 UAL817 - Jul 8, 22:30 UTCJul 9, 01:25 UTC2h 55m
2026-07-08 UAL2831 SEA → SFO Jul 8, 19:05 UTCJul 8, 20:45 UTC1h 40m
2026-07-08 UAL1577 - Jul 8, 01:50 UTCJul 8, 03:20 UTC1h 30m
2026-07-07 UAL442 AUS → SFO Jul 7, 20:50 UTCJul 8, 00:05 UTC3h 15m
2026-07-07 UAL1326 SFO → AUS Jul 7, 16:20 UTCJul 7, 19:20 UTC3h 0m
2026-07-07 UAL790 DFW → SFO Jul 7, 11:15 UTCJul 7, 14:25 UTC3h 10m
2026-07-07 UAL8265 - Jul 7, 02:20 UTCJul 7, 05:15 UTC2h 55m
2026-07-07 UAL8265 SFO → DFW Jul 7, 02:29 UTCJul 7, 05:17 UTC2h 48m
2026-07-06 UAL1702 - Jul 6, 20:00 UTCJul 7, 01:10 UTC5h 10m
2026-07-06 UAL2831 SEA → SFO Jul 6, 16:38 UTCJul 6, 18:24 UTC1h 46m
2026-07-06 UAL2831 SEA → SFO Jul 6, 16:40 UTCJul 6, 18:35 UTC1h 55m
2026-07-06 UAL1577 - Jul 6, 01:40 UTCJul 6, 03:10 UTC1h 30m
2026-07-05 UAL442 AUS → SFO Jul 5, 20:50 UTCJul 6, 00:15 UTC3h 25m
2026-07-05 UAL1326 SFO → AUS Jul 5, 16:15 UTCJul 5, 19:15 UTC3h 0m
2026-07-05 UAL335 EUG → SFO Jul 5, 13:13 UTCJul 5, 14:29 UTC1h 16m
2026-07-05 UAL1508 SFO → EUG Jul 5, 04:35 UTCJul 5, 05:40 UTC1h 5m
2026-07-05 UAL1508 BUR → SFO Jul 5, 02:00 UTCJul 5, 02:50 UTC50m
2026-07-04 UAL626 - Jul 4, 21:05 UTCJul 4, 21:55 UTC50m
2026-07-04 UAL626 SFO → BUR Jul 4, 21:12 UTCJul 4, 21:55 UTC43m
2026-07-04 UAL1482 SEA → SFO Jul 4, 17:55 UTCJul 4, 19:35 UTC1h 40m
2026-07-04 UAL1007 SFO → SEA Jul 4, 04:55 UTCJul 4, 06:30 UTC1h 35m
2026-07-04 UAL649 SFO → EWR Jul 4, 02:25 UTCJul 4, 03:50 UTC1h 25m
2026-07-03 UAL2602 - Jul 3, 22:30 UTCJul 4, 00:05 UTC1h 35m
2026-07-03 UAL2602 DEN → BOI Jul 3, 22:17 UTCJul 4, 00:01 UTC1h 44m

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 N487UA page for operator, model, and routing details .

Mode-S A6045D frequently asked

What is Mode-S code A6045D?
A6045D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N487UA.
Where is Mode-S A6045D registered?
Mode-S code A6045D 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 A6045D broadcasting right now?
Yes. Mode-S A6045D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6045D, octal 51402135, decimal 10,880,093.
What flights does A6045D operate?
Mode-S A6045D has broadcast 20 distinct callsigns, including UAL817, UAL739, UAL1655, UAL764, UAL718.