Apparatus

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sensors Mode-S transponder

A3CA43

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N343UP · BOEING 767-300 · operated by UNITED PARCEL SERVICE CO

Hex
A3CA43
Octal
50745103
Decimal
10,734,147
Country
US
Tail
N343UP
Type
B763
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
395
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A3CA43.

Country allocation

The ICAO 24-bit address A3CA43 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
UPS355 United Parcel Service 10 2026-05-16
UPS2463 United Parcel Service 9 2026-07-20
UPS2462 - 9 2026-07-20
UPS232 - 9 2026-06-27
UPS219 - 9 2026-06-17
UPS354 United Parcel Service 8 2026-05-16
UPS1332 - 6 2026-07-17
UPS927 United Parcel Service 5 2026-07-21
UPS7983 - 5 2026-07-03
UPS5337 United Parcel Service 5 2026-05-20
UPS371 United Parcel Service 5 2026-05-15
UPS238 - 5 2026-06-29
UPS208 - 5 2026-06-23
UPS793 - 4 2026-07-02
UPS5837 United Parcel Service 4 2026-06-05
UPS5125 - 4 2026-07-10
UPS473 - 4 2026-07-07
UPS417 United Parcel Service 4 2026-05-12
UPS411 United Parcel Service 4 2026-05-14
UPS370 United Parcel Service 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS5336 ONT → TPA Jul 26, 21:45 UTCJul 26, 22:45 UTC1h 0m
2026-07-26 UPS5899 LAS → SDF Jul 26, 13:05 UTCJul 26, 16:20 UTC3h 15m
2026-07-25 UPS5896 SDF → LAS Jul 25, 21:10 UTCJul 26, 00:30 UTC3h 20m
2026-07-25 UPS5896 SDF → LAS Jul 25, 21:05 UTCJul 26, 00:33 UTC3h 28m
2026-07-25 UPS5133 SYR → SDF Jul 25, 12:30 UTCJul 25, 13:55 UTC1h 25m
2026-07-25 UPS5133 SYR → SDF Jul 25, 12:29 UTCJul 25, 13:55 UTC1h 26m
2026-07-25 UPS1132 PHL → BUF Jul 25, 09:50 UTCJul 25, 11:05 UTC1h 15m
2026-07-25 UPS301 AUS → SDF Jul 25, 01:30 UTCJul 25, 04:05 UTC2h 35m
2026-07-24 UPS300 SDF → AUS Jul 24, 09:35 UTCJul 24, 12:05 UTC2h 30m
2026-07-24 UPS7831 RFD → SDF Jul 24, 06:15 UTCJul 24, 07:00 UTC45m
2026-07-24 UPS1301 ATL → RFD Jul 24, 02:55 UTCJul 24, 04:20 UTC1h 25m
2026-07-23 UPS5306 SDF → ATL Jul 23, 20:50 UTCJul 23, 21:45 UTC55m
2026-07-23 UPS5063 BDL → RFD Jul 23, 12:00 UTCJul 23, 13:50 UTC1h 50m
2026-07-23 UPS1122 BDL → ALB Jul 23, 07:55 UTCJul 23, 08:25 UTC30m
2026-07-23 UPS1188 SDF → PHL Jul 23, 05:25 UTCJul 23, 06:40 UTC1h 15m
2026-07-23 UPS1139 SYR → PHL Jul 23, 01:45 UTCJul 23, 03:15 UTC1h 30m
2026-07-22 UPS2134 SDF → SYR Jul 22, 20:40 UTCJul 22, 21:55 UTC1h 15m
2026-07-22 UPS5063 - Jul 22, 11:30 UTCJul 22, 13:15 UTC1h 45m
2026-07-22 UPS1188 SDF → PHL Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-22 UPS1441 CLE → SDF Jul 22, 01:40 UTCJul 22, 02:30 UTC50m
2026-07-21 UPS5442 SDF → CLE Jul 21, 23:05 UTCJul 21, 23:55 UTC50m
2026-07-21 UPS2903 - Jul 21, 13:00 UTCJul 21, 16:40 UTC3h 40m
2026-07-21 UPS910 RFD → ONT Jul 21, 07:30 UTCJul 21, 10:55 UTC3h 25m
2026-07-21 UPS927 ONT → RFD Jul 21, 02:50 UTCJul 21, 06:00 UTC3h 10m
2026-07-20 UPS2463 KOA → OGG Jul 20, 18:19 UTCJul 20, 23:13 UTC4h 54m
2026-07-20 UPS2463 KOA → OGG Jul 20, 18:19 UTCJul 20, 23:13 UTC4h 54m
2026-07-20 UPS2463 KOA → OGG Jul 20, 16:40 UTCJul 20, 16:55 UTC15m
2026-07-20 UPS2463 KOA → OGG Jul 20, 14:45 UTCJul 20, 15:25 UTC40m
2026-07-20 UPS2462 - Jul 20, 09:30 UTCJul 20, 10:00 UTC30m
2026-07-20 UPS2462 - Jul 20, 06:40 UTCJul 20, 06:45 UTC5m
2026-07-20 UPS2462 - Jul 20, 01:45 UTCJul 20, 02:20 UTC35m
2026-07-19 UPS5902 ANC → SDF Jul 19, 19:45 UTCJul 19, 23:00 UTC3h 15m
2026-07-19 UPS5343 MIA → RFD Jul 19, 13:55 UTCJul 19, 16:30 UTC2h 35m
2026-07-19 UPS421 BOG → MIA Jul 19, 09:05 UTCJul 19, 12:00 UTC2h 55m
2026-07-19 UPS420 MIA → BOG Jul 19, 04:30 UTCJul 19, 07:25 UTC2h 55m
2026-07-17 UPS402 MIA → MIA Jul 17, 13:35 UTCJul 18, 00:10 UTC10h 35m
2026-07-17 UPS1332 - Jul 17, 08:35 UTCJul 17, 10:40 UTC2h 5m
2026-07-17 UPS321 - Jul 17, 01:55 UTCJul 17, 04:59 UTC3h 5m
2026-07-16 UPS320 - Jul 16, 09:10 UTCJul 16, 12:05 UTC2h 55m
2026-07-16 UPS401 - Jul 16, 01:40 UTCJul 16, 03:35 UTC1h 55m
2026-07-15 UPS2310 - Jul 15, 19:05 UTCJul 15, 23:45 UTC4h 40m
2026-07-15 UPS928 - Jul 15, 07:50 UTCJul 15, 10:55 UTC3h 5m
2026-07-15 UPS927 - Jul 15, 02:55 UTCJul 15, 06:10 UTC3h 15m
2026-07-14 UPS2928 - Jul 14, 21:15 UTCJul 15, 00:40 UTC3h 24m
2026-07-14 UPS2928 SDF → ONT Jul 14, 21:06 UTCJul 15, 00:43 UTC3h 37m
2026-07-14 UPS5775 DFW → SDF Jul 14, 14:31 UTCJul 14, 16:12 UTC1h 41m
2026-07-14 UPS5775 DFW → SDF Jul 14, 14:30 UTCJul 14, 16:10 UTC1h 40m
2026-07-14 UPS762 - Jul 14, 08:05 UTCJul 14, 09:35 UTC1h 30m
2026-07-14 UPS762 SDF → DFW Jul 14, 07:55 UTCJul 14, 09:41 UTC1h 46m
2026-07-10 UPS5125 JFK → SDF Jul 10, 12:07 UTCJul 10, 13:45 UTC1h 38m

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 N343UP page for operator, model, and routing details .

Mode-S A3CA43 frequently asked

What is Mode-S code A3CA43?
A3CA43 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N343UP.
Where is Mode-S A3CA43 registered?
Mode-S code A3CA43 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 A3CA43 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3CA43, octal 50745103, decimal 10,734,147.
What flights does A3CA43 operate?
Mode-S A3CA43 has broadcast 20 distinct callsigns, including UPS355, UPS2463, UPS2462, UPS232, UPS219.