Apparatus

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sensors Mode-S transponder

A3C2D5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N341UP · BOEING 767-300 · operated by UNITED PARCEL SERVICE CO

Hex
A3C2D5
Octal
50741325
Decimal
10,732,245
Country
US
Tail
N341UP
Type
B763
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
324
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A3C2D5.

Country allocation

The ICAO 24-bit address A3C2D5 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
UPS118 - 16 2026-06-26
UPS119 - 13 2026-06-25
UPS166 United Parcel Service 12 2026-06-15
UPS167 United Parcel Service 11 2026-06-14
UPS146 - 10 2026-06-18
UPS127 - 10 2026-06-21
UPS145 - 9 2026-06-19
UPS208 - 7 2026-07-02
UPS126 - 7 2026-06-22
UPS249 United Parcel Service 6 2026-07-01
UPS248 - 6 2026-07-01
UPS168 - 5 2026-06-14
UPS144 - 5 2026-06-19
UPS1194 - 5 2026-07-07
UPS990 United Parcel Service 4 2026-04-14
UPS901 - 4 2026-07-15
UPS5971 United Parcel Service 4 2026-07-25
UPS31 United Parcel Service 4 2026-06-28
UPS26 - 4 2026-06-27
UPS207 United Parcel Service 4 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS5982 GEG → BFI Jul 26, 20:25 UTCJul 26, 21:15 UTC50m
2026-07-26 UPS5957 MHR → SDF Jul 26, 13:30 UTCJul 26, 17:15 UTC3h 45m
2026-07-25 UPS5958 SDF → MHR Jul 25, 20:55 UTCJul 26, 00:50 UTC3h 55m
2026-07-25 UPS5958 SDF → MHR Jul 25, 20:50 UTCJul 26, 00:49 UTC3h 59m
2026-07-25 UPS5971 PDX → SDF Jul 25, 13:50 UTCJul 25, 17:20 UTC3h 30m
2026-07-24 UPS974 SDF → PDX Jul 24, 07:55 UTCJul 24, 12:15 UTC4h 20m
2026-07-24 UPS1111 JFK → SDF Jul 24, 03:35 UTCJul 24, 05:05 UTC1h 30m
2026-07-23 UPS2114 JFK → SDF Jul 23, 20:00 UTCJul 23, 21:35 UTC1h 35m
2026-07-23 UPS2801 DEN → SDF Jul 23, 13:25 UTCJul 23, 15:25 UTC2h 0m
2026-07-23 UPS802 SDF → DEN Jul 23, 07:45 UTCJul 23, 10:00 UTC2h 15m
2026-07-23 UPS959 MHR → SDF Jul 23, 02:20 UTCJul 23, 06:00 UTC3h 40m
2026-07-22 UPS2960 DSM → MHR Jul 22, 19:55 UTCJul 22, 23:55 UTC4h 0m
2026-07-22 UPS5905 ONT → SDF Jul 22, 13:10 UTCJul 22, 16:35 UTC3h 25m
2026-07-22 UPS1171 MDT → SDF Jul 22, 02:15 UTCJul 22, 03:35 UTC1h 20m
2026-07-21 UPS1172 SDF → MDT Jul 21, 08:50 UTCJul 21, 09:55 UTC1h 5m
2026-07-21 UPS905 LGB → SDF Jul 21, 02:35 UTCJul 21, 06:15 UTC3h 40m
2026-07-20 UPS5886 SDF → LAS Jul 20, 01:00 UTCJul 20, 01:45 UTC45m
2026-07-19 UPS5886 SDF → LAS Jul 19, 20:20 UTCJul 19, 23:35 UTC3h 15m
2026-07-19 UPS5337 - Jul 19, 13:25 UTCJul 19, 14:45 UTC1h 20m
2026-07-19 UPS5337 - Jul 19, 11:05 UTCJul 19, 12:20 UTC1h 15m
2026-07-18 UPS2332 SDF → MIA Jul 18, 21:25 UTCJul 18, 23:25 UTC2h 0m
2026-07-18 UPS919 ONT → SDF Jul 18, 02:50 UTCJul 18, 06:50 UTC4h 0m
2026-07-17 UPS5928 SDF → ONT Jul 17, 21:00 UTCJul 18, 00:29 UTC3h 30m
2026-07-17 UPS5929 SAN → SDF Jul 17, 13:35 UTCJul 17, 17:15 UTC3h 40m
2026-07-17 UPS922 - Jul 17, 08:00 UTCJul 17, 11:30 UTC3h 30m
2026-07-17 UPS959 MHR → SDF Jul 17, 02:10 UTCJul 17, 06:00 UTC3h 50m
2026-07-16 UPS7849 OAK → MHR Jul 16, 23:44 UTCJul 17, 00:10 UTC25m
2026-07-16 UPS2944 - Jul 16, 17:35 UTCJul 16, 21:35 UTC4h 0m
2026-07-16 UPS5063 - Jul 16, 11:10 UTCJul 16, 12:49 UTC1h 40m
2026-07-16 UPS1122 - Jul 16, 07:50 UTCJul 16, 08:25 UTC35m
2026-07-16 UPS1188 - Jul 16, 05:10 UTCJul 16, 06:25 UTC1h 15m
2026-07-15 UPS901 - Jul 15, 23:35 UTCJul 16, 03:20 UTC3h 45m
2026-07-15 UPS9301 - Jul 15, 06:40 UTCJul 15, 11:30 UTC4h 50m
2026-07-13 UPS2969 LIH → HNL Jul 13, 17:06 UTCJul 13, 17:29 UTC23m
2026-07-13 UPS2969 - Jul 13, 14:45 UTCJul 13, 14:55 UTC10m
2026-07-13 UPS2968 - Jul 13, 10:50 UTCJul 13, 11:10 UTC20m
2026-07-13 UPS2968 - Jul 13, 03:45 UTCJul 13, 04:20 UTC35m
2026-07-12 UPS5902 - Jul 12, 19:35 UTCJul 12, 22:45 UTC3h 10m
2026-07-11 UPS2618 - Jul 11, 22:40 UTCJul 11, 23:25 UTC45m
2026-07-11 UPS5775 - Jul 11, 13:50 UTCJul 11, 15:30 UTC1h 40m
2026-07-11 UPS768 - Jul 11, 10:20 UTCJul 11, 12:00 UTC1h 40m
2026-07-11 UPS1219 - Jul 11, 02:25 UTCJul 11, 03:40 UTC1h 15m
2026-07-10 UPS1220 SDF → IAD Jul 10, 09:00 UTCJul 10, 10:05 UTC1h 5m
2026-07-10 UPS1220 SDF → IAD Jul 10, 08:44 UTCJul 10, 10:04 UTC1h 20m
2026-07-10 UPS1305 - Jul 10, 02:10 UTCJul 10, 03:05 UTC55m
2026-07-09 UPS1306 - Jul 9, 07:10 UTCJul 9, 08:00 UTC50m
2026-07-09 UPS1306 SDF → ATL Jul 9, 07:10 UTCJul 9, 08:07 UTC57m
2026-07-09 UPS1077 - Jul 9, 02:40 UTCJul 9, 04:15 UTC1h 35m
2026-07-09 UPS1077 EWR → SDF Jul 9, 02:37 UTCJul 9, 04:18 UTC1h 41m
2026-07-08 UPS2076 - Jul 8, 20:45 UTCJul 8, 22:25 UTC1h 40m

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 N341UP page for operator, model, and routing details .

Mode-S A3C2D5 frequently asked

What is Mode-S code A3C2D5?
A3C2D5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N341UP.
Where is Mode-S A3C2D5 registered?
Mode-S code A3C2D5 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 A3C2D5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3C2D5, octal 50741325, decimal 10,732,245.
What flights does A3C2D5 operate?
Mode-S A3C2D5 has broadcast 20 distinct callsigns, including UPS118, UPS119, UPS166, UPS167, UPS146.