Apparatus

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sensors Mode-S transponder

A3F1C2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N353UP · BOEING 767-300 · operated by UNITED PARCEL SERVICE CO

Hex
A3F1C2
Octal
50770702
Decimal
10,744,258
Country
US
Tail
N353UP
Type
B763
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
339
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A3F1C2.

Country allocation

The ICAO 24-bit address A3F1C2 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
UPS167 - 19 2026-06-30
UPS166 United Parcel Service 16 2026-06-30
UPS105 United Parcel Service 15 2026-07-09
UPS196 - 11 2026-07-02
UPS137 - 10 2026-07-04
UPS104 - 10 2026-07-10
UPS195 - 9 2026-07-03
UPS146 - 9 2026-07-05
UPS371 United Parcel Service 7 2026-05-12
UPS138 - 7 2026-07-03
UPS370 United Parcel Service 6 2026-05-12
UPS152 United Parcel Service 6 2026-06-06
UPS1340 United Parcel Service 6 2026-05-12
UPS145 - 5 2026-07-06
UPS136 - 5 2026-07-02
UPS119 - 5 2026-06-28
UPS151 United Parcel Service 4 2026-06-05
UPS147 - 4 2026-07-05
UPS144 - 4 2026-07-06
UPS126 United Parcel Service 4 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS5980 SDF → BFI Jul 26, 20:00 UTCJul 26, 22:30 UTC2h 30m
2026-07-26 UPS5343 MIA → RFD Jul 26, 14:00 UTCJul 26, 16:45 UTC2h 45m
2026-07-26 UPS421 BOG → MIA Jul 26, 09:05 UTCJul 26, 12:00 UTC2h 55m
2026-07-26 UPS420 MIA → BOG Jul 26, 04:25 UTCJul 26, 06:30 UTC2h 5m
2026-07-26 UPS420 MIA → BOG Jul 26, 04:32 UTCJul 26, 07:28 UTC2h 56m
2026-07-25 UPS1332 SDF → MIA Jul 25, 08:55 UTCJul 25, 10:50 UTC1h 55m
2026-07-25 UPS903 LAX → SDF Jul 25, 02:25 UTCJul 25, 06:00 UTC3h 35m
2026-07-24 UPS5900 SDF → LAX Jul 24, 20:40 UTCJul 25, 00:25 UTC3h 45m
2026-07-24 UPS5907 ONT → SDF Jul 24, 11:25 UTCJul 24, 14:55 UTC3h 30m
2026-07-22 UPS9885 RFD → SDF Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-21 UPS5982 GEG → BFI Jul 21, 22:20 UTCJul 22, 02:40 UTC4h 20m
2026-07-21 UPS5909 - Jul 21, 12:40 UTCJul 21, 16:15 UTC3h 35m
2026-07-21 UPS7831 - Jul 21, 06:35 UTCJul 21, 10:00 UTC3h 25m
2026-07-21 UPS1301 ATL → RFD Jul 21, 02:55 UTCJul 21, 04:30 UTC1h 35m
2026-07-17 UPS1304 - Jul 17, 08:25 UTCJul 17, 09:15 UTC50m
2026-07-17 UPS1077 EWR → SDF Jul 17, 02:54 UTCJul 17, 04:29 UTC1h 35m
2026-07-16 UPS2084 ONT → EWR Jul 16, 18:40 UTCJul 16, 23:44 UTC5h 5m
2026-07-16 UPS2841 SLC → ONT Jul 16, 12:34 UTCJul 16, 13:54 UTC1h 20m
2026-07-16 UPS842 - Jul 16, 09:20 UTCJul 16, 10:35 UTC1h 15m
2026-07-16 UPS841 SLC → ONT Jul 16, 02:50 UTCJul 16, 04:05 UTC1h 15m
2026-07-15 UPS5842 - Jul 15, 19:15 UTCJul 15, 22:05 UTC2h 50m
2026-07-15 UPS5193 - Jul 15, 13:20 UTCJul 15, 14:40 UTC1h 20m
2026-07-15 UPS5193 PHL → PHL Jul 15, 13:00 UTCJul 15, 13:05 UTC5m
2026-07-15 UPS1194 - Jul 15, 08:35 UTCJul 15, 10:05 UTC1h 30m
2026-07-15 UPS301 MTY → SDF Jul 15, 01:25 UTCJul 15, 04:00 UTC2h 35m
2026-07-14 UPS300 - Jul 14, 09:40 UTCJul 14, 12:10 UTC2h 30m
2026-07-14 UPS300 SDF → MTY Jul 14, 09:40 UTCJul 14, 12:13 UTC2h 33m
2026-07-14 UPS1303 ATL → SDF Jul 14, 04:10 UTCJul 14, 05:00 UTC50m
2026-07-14 UPS1303 ATL → SDF Jul 14, 04:05 UTCJul 14, 05:00 UTC55m
2026-07-14 UPS9300 - Jul 14, 02:25 UTCJul 14, 03:05 UTC40m
2026-07-14 UPS9300 TYS → ATL Jul 14, 02:25 UTCJul 14, 02:56 UTC31m
2026-07-10 UPS104 - Jul 10, 09:05 UTCJul 10, 10:05 UTC1h 0m
2026-07-09 UPS105 KIX → ANC Jul 9, 22:50 UTCJul 10, 04:40 UTC5h 50m
2026-07-09 UPS105 KIX → ANC Jul 9, 22:41 UTCJul 10, 04:32 UTC5h 51m
2026-07-09 UPS105 KIX → ANC Jul 9, 13:50 UTCJul 9, 14:30 UTC40m
2026-07-09 UPS105 KIX → ANC Jul 9, 13:44 UTCJul 9, 21:30 UTC7h 46m
2026-07-09 UPS105 KIX → ANC Jul 9, 04:50 UTCJul 9, 12:25 UTC7h 35m
2026-07-08 UPS104 - Jul 8, 17:30 UTCJul 8, 19:15 UTC1h 45m
2026-07-08 UPS104 ANC → KIX Jul 8, 17:12 UTCJul 9, 01:54 UTC8h 42m
2026-07-08 UPS104 - Jul 8, 09:00 UTCJul 8, 15:05 UTC6h 5m
2026-07-07 UPS105 KIX → ANC Jul 7, 22:35 UTCJul 8, 04:55 UTC6h 20m
2026-07-07 UPS105 KIX → ANC Jul 7, 22:26 UTCJul 8, 04:50 UTC6h 24m
2026-07-07 UPS105 KIX → ANC Jul 7, 13:50 UTCJul 7, 14:30 UTC40m
2026-07-07 UPS105 KIX → ANC Jul 7, 13:44 UTCJul 7, 21:01 UTC7h 17m
2026-07-07 UPS105 KIX → ANC Jul 7, 04:55 UTCJul 7, 11:15 UTC6h 20m
2026-07-06 UPS127 - Jul 6, 22:45 UTCJul 6, 23:40 UTC55m
2026-07-06 UPS145 - Jul 6, 17:35 UTCJul 6, 17:50 UTC15m
2026-07-06 UPS145 - Jul 6, 15:25 UTCJul 6, 15:55 UTC30m
2026-07-06 UPS144 - Jul 6, 11:50 UTCJul 6, 13:10 UTC1h 20m
2026-07-05 UPS147 - Jul 5, 05:05 UTCJul 5, 05:35 UTC30m

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 N353UP page for operator, model, and routing details .

Mode-S A3F1C2 frequently asked

What is Mode-S code A3F1C2?
A3F1C2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N353UP.
Where is Mode-S A3F1C2 registered?
Mode-S code A3F1C2 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 A3F1C2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3F1C2, octal 50770702, decimal 10,744,258.
What flights does A3F1C2 operate?
Mode-S A3F1C2 has broadcast 20 distinct callsigns, including UPS167, UPS166, UPS105, UPS196, UPS137.