Apparatus

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sensors Mode-S transponder

A3918F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N329UP · BOEING 767-300 · operated by UNITED PARCEL SERVICE CO

Hex
A3918F
Octal
50710617
Decimal
10,719,631
Country
US
Tail
N329UP
Type
B763
No current signal · last broadcast 2h ago
Flights observed
278
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A3918F.

Country allocation

The ICAO 24-bit address A3918F 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
UPS207 United Parcel Service 8 2026-05-13
UPS2463 United Parcel Service 7 2026-05-29
UPS684 United Parcel Service 6 2026-05-06
UPS2462 United Parcel Service 6 2026-05-29
UPS208 United Parcel Service 6 2026-05-19
UPS5683 United Parcel Service 5 2026-05-06
UPS5337 - 5 2026-07-09
UPS946 - 4 2026-04-14
UPS918 United Parcel Service 4 2026-06-04
UPS7893 United Parcel Service 4 2026-04-17
UPS788 United Parcel Service 4 2026-06-03
UPS5303 - 4 2026-06-30
UPS5074 United Parcel Service 4 2026-04-17
UPS1356 - 4 2026-07-10
UPS1306 - 4 2026-06-30
UPS1303 United Parcel Service 4 2026-05-22
UPS990 United Parcel Service 3 2026-04-22
UPS919 - 3 2026-06-19
UPS901 - 3 2026-07-08
UPS5772 United Parcel Service 3 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UPS9306 BHM → SDF Jul 14, 03:25 UTCJul 14, 04:20 UTC55m
2026-07-10 UPS1356 - Jul 10, 09:00 UTCJul 10, 09:40 UTC40m
2026-07-10 UPS1356 SDF → BHM Jul 10, 08:58 UTCJul 10, 09:45 UTC47m
2026-07-10 UPS339 - Jul 10, 00:50 UTCJul 10, 04:45 UTC3h 55m
2026-07-09 UPS7938 - Jul 9, 22:30 UTCJul 9, 23:00 UTC30m
2026-07-09 UPS7938 - Jul 9, 19:10 UTCJul 9, 20:55 UTC1h 45m
2026-07-09 UPS5337 MIA → SDF Jul 9, 11:21 UTCJul 9, 13:27 UTC2h 6m
2026-07-09 UPS1340 TPA → MIA Jul 9, 08:45 UTCJul 9, 09:20 UTC35m
2026-07-09 UPS1340 - Jul 9, 06:10 UTCJul 9, 07:40 UTC1h 30m
2026-07-08 UPS901 - Jul 8, 23:40 UTCJul 9, 03:30 UTC3h 50m
2026-07-08 UPS5196 PHL → ONT Jul 8, 14:25 UTCJul 8, 19:15 UTC4h 50m
2026-07-08 UPS5196 PHL → ONT Jul 8, 14:31 UTCJul 8, 19:13 UTC4h 42m
2026-07-08 UPS9706 - Jul 8, 09:15 UTCJul 8, 10:00 UTC45m
2026-07-08 UPS9706 BUF → PHL Jul 8, 09:14 UTCJul 8, 10:07 UTC53m
2026-07-08 UPS1144 PHL → BUF Jul 8, 07:51 UTCJul 8, 08:31 UTC40m
2026-07-08 UPS1144 PHL → BUF Jul 8, 07:45 UTCJul 8, 08:30 UTC45m
2026-07-08 UPS1055 - Jul 8, 01:55 UTCJul 8, 02:55 UTC1h 0m
2026-07-07 UPS2054 - Jul 7, 19:05 UTCJul 7, 20:45 UTC1h 40m
2026-07-07 UPS2054 SDF → MHT Jul 7, 19:04 UTCJul 7, 20:50 UTC1h 46m
2026-07-07 UPS2567 MSP → SDF Jul 7, 12:21 UTCJul 7, 13:50 UTC1h 29m
2026-07-07 UPS2567 MSP → SDF Jul 7, 12:25 UTCJul 7, 13:55 UTC1h 30m
2026-07-07 UPS560 - Jul 7, 09:20 UTCJul 7, 10:40 UTC1h 20m
2026-07-07 UPS560 SDF → MSP Jul 7, 09:09 UTCJul 7, 10:46 UTC1h 37m
2026-07-03 UPS5193 PHL → SDF Jul 3, 13:30 UTCJul 3, 14:50 UTC1h 20m
2026-07-03 UPS5193 PHL → SDF Jul 3, 13:27 UTCJul 3, 14:56 UTC1h 29m
2026-07-03 UPS219 SDF → PHL Jul 3, 08:41 UTCJul 3, 10:01 UTC1h 20m
2026-07-03 UPS473 YMX → SDF Jul 3, 02:20 UTCJul 3, 04:05 UTC1h 45m
2026-07-03 UPS473 YMX → SDF Jul 3, 02:19 UTCJul 3, 04:08 UTC1h 49m
2026-07-02 UPS474 - Jul 2, 08:20 UTCJul 2, 09:50 UTC1h 30m
2026-07-02 UPS1355 - Jul 2, 02:45 UTCJul 2, 03:35 UTC50m
2026-07-02 UPS1355 BHM → SDF Jul 2, 02:44 UTCJul 2, 03:37 UTC53m
2026-07-01 UPS1356 - Jul 1, 09:05 UTCJul 1, 09:50 UTC45m
2026-07-01 UPS1356 SDF → BHM Jul 1, 09:04 UTCJul 1, 09:57 UTC53m
2026-06-30 UPS5303 ATL → SDF Jun 30, 11:25 UTCJun 30, 12:15 UTC50m
2026-06-30 UPS5303 ATL → SDF Jun 30, 11:19 UTCJun 30, 12:18 UTC59m
2026-06-30 UPS1306 - Jun 30, 07:15 UTCJun 30, 08:00 UTC45m
2026-06-30 UPS1306 SDF → ATL Jun 30, 07:07 UTCJun 30, 08:08 UTC1h 1m
2026-06-26 UPS5909 - Jun 26, 12:24 UTCJun 26, 15:45 UTC3h 20m
2026-06-26 UPS983 BFI → ONT Jun 26, 02:50 UTCJun 26, 04:55 UTC2h 5m
2026-06-26 UPS2986 SDF → BFI Jun 26, 00:20 UTCJun 26, 00:50 UTC30m
2026-06-25 UPS2986 SDF → BFI Jun 25, 19:15 UTCJun 25, 23:05 UTC3h 50m
2026-06-25 UPS2029 - Jun 25, 11:44 UTCJun 25, 13:50 UTC2h 5m
2026-06-25 UPS1066 - Jun 25, 08:14 UTCJun 25, 09:45 UTC1h 30m
2026-06-25 UPS793 - Jun 25, 03:24 UTCJun 25, 05:05 UTC1h 40m
2026-06-24 UPS335 - Jun 24, 23:10 UTCJun 25, 01:44 UTC2h 35m
2026-06-24 UPS335 - Jun 24, 19:20 UTCJun 24, 21:24 UTC2h 5m
2026-06-24 UPS335 - Jun 24, 16:40 UTCJun 24, 16:50 UTC10m
2026-06-24 UPS334 JAX → SJU Jun 24, 14:34 UTCJun 24, 15:00 UTC25m
2026-06-24 UPS334 JAX → SJU Jun 24, 12:14 UTCJun 24, 13:00 UTC45m
2026-06-24 UPS1322 - Jun 24, 09:00 UTCJun 24, 10:10 UTC1h 10m

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 N329UP page for operator, model, and routing details .

Mode-S A3918F frequently asked

What is Mode-S code A3918F?
A3918F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N329UP.
Where is Mode-S A3918F registered?
Mode-S code A3918F 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 A3918F broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3918F, octal 50710617, decimal 10,719,631.
What flights does A3918F operate?
Mode-S A3918F has broadcast 20 distinct callsigns, including UPS207, UPS2463, UPS684, UPS2462, UPS208.