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 Jul 26, 21:45 UTC
Flights observed
322
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

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
UPS918 United Parcel Service 5 2026-07-21
UPS5683 United Parcel Service 5 2026-05-06
UPS5337 - 5 2026-07-09
UPS946 - 4 2026-04-14
UPS7893 United Parcel Service 4 2026-04-17
UPS788 United Parcel Service 4 2026-06-03
UPS5772 United Parcel Service 4 2026-07-23
UPS5303 - 4 2026-06-30
UPS5074 United Parcel Service 4 2026-04-17
UPS328 United Parcel Service 4 2026-07-25
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
UPS942 United Parcel Service 3 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS986 SDF → SLC Jul 26, 20:50 UTCJul 26, 21:45 UTC55m
2026-07-26 UPS7929 SJU → SDF Jul 26, 11:05 UTCJul 26, 14:50 UTC3h 45m
2026-07-25 UPS328 SDF → SJU Jul 25, 21:05 UTCJul 26, 00:40 UTC3h 35m
2026-07-25 UPS328 SDF → SJU Jul 25, 20:59 UTCJul 26, 00:35 UTC3h 36m
2026-07-25 UPS5855 SLC → SDF Jul 25, 13:00 UTCJul 25, 15:40 UTC2h 40m
2026-07-25 UPS5855 SLC → SDF Jul 25, 12:58 UTCJul 25, 15:38 UTC2h 40m
2026-07-25 UPS9805 HNL → ORD Jul 25, 01:05 UTCJul 25, 02:05 UTC1h 0m
2026-07-24 UPS810 RFD → DEN Jul 24, 07:45 UTCJul 24, 09:30 UTC1h 45m
2026-07-24 UPS775 IAH → RFD Jul 24, 03:00 UTCJul 24, 04:50 UTC1h 50m
2026-07-23 UPS5772 SDF → IAH Jul 23, 22:15 UTCJul 23, 22:55 UTC40m
2026-07-23 UPS2633 OAK → DFW Jul 23, 13:30 UTCJul 23, 16:30 UTC3h 0m
2026-07-23 UPS942 SDF → OAK Jul 23, 06:45 UTCJul 23, 10:50 UTC4h 5m
2026-07-23 UPS767 DFW → SDF Jul 23, 02:35 UTCJul 23, 04:15 UTC1h 40m
2026-07-22 UPS2756 SDF → DFW Jul 22, 19:15 UTCJul 22, 21:45 UTC2h 30m
2026-07-22 UPS9802 DEN → LAS Jul 22, 13:50 UTCJul 22, 15:35 UTC1h 45m
2026-07-22 UPS849 ABQ → ONT Jul 22, 03:15 UTCJul 22, 04:00 UTC45m
2026-07-21 UPS2846 SDF → SLC Jul 21, 20:40 UTCJul 21, 23:35 UTC2h 55m
2026-07-21 UPS2925 - Jul 21, 13:55 UTCJul 21, 17:05 UTC3h 10m
2026-07-21 UPS918 SDF → DEN Jul 21, 08:00 UTCJul 21, 11:20 UTC3h 20m
2026-07-21 UPS321 MEX → SDF Jul 21, 02:20 UTCJul 21, 05:25 UTC3h 5m
2026-07-20 UPS320 SDF → MEX Jul 20, 09:05 UTCJul 20, 12:05 UTC3h 0m
2026-07-19 UPS5359 MCO → SDF Jul 19, 11:40 UTCJul 19, 13:20 UTC1h 40m
2026-07-18 UPS5326 SDF → MCO Jul 18, 21:30 UTCJul 18, 23:05 UTC1h 35m
2026-07-18 UPS5839 OAK → SDF Jul 18, 12:25 UTCJul 18, 16:15 UTC3h 50m
2026-07-17 UPS5946 SDF → OAK Jul 17, 20:04 UTCJul 18, 00:04 UTC4h 0m
2026-07-17 UPS5445 - Jul 17, 11:30 UTCJul 17, 12:15 UTC45m
2026-07-17 UPS1442 - Jul 17, 09:04 UTCJul 17, 09:55 UTC50m
2026-07-17 UPS7831 RFD → SDF Jul 17, 06:15 UTCJul 17, 07:00 UTC45m
2026-07-17 UPS1191 - Jul 17, 02:25 UTCJul 17, 04:10 UTC1h 45m
2026-07-16 UPS2190 - Jul 16, 19:30 UTCJul 17, 00:04 UTC4h 35m
2026-07-16 UPS2983 - Jul 16, 12:55 UTCJul 16, 15:05 UTC2h 10m
2026-07-16 UPS984 - Jul 16, 09:25 UTCJul 16, 11:20 UTC1h 55m
2026-07-15 UPS2924 - Jul 15, 20:10 UTCJul 15, 23:25 UTC3h 15m
2026-07-15 UPS2049 - Jul 15, 12:45 UTCJul 15, 14:45 UTC2h 0m
2026-07-15 UPS1056 PHL → MHT Jul 15, 08:05 UTCJul 15, 08:55 UTC50m
2026-07-15 UPS1323 - Jul 15, 01:35 UTCJul 15, 03:30 UTC1h 55m
2026-07-14 UPS2344 - Jul 14, 23:10 UTCJul 14, 23:25 UTC15m
2026-07-14 UPS2344 - Jul 14, 18:35 UTCJul 14, 23:25 UTC4h 49m
2026-07-14 UPS2344 ONT → MCO Jul 14, 18:33 UTCJul 14, 22:55 UTC4h 22m
2026-07-14 UPS5609 - Jul 14, 11:55 UTCJul 14, 15:10 UTC3h 15m
2026-07-14 UPS5609 ORD → ONT Jul 14, 11:54 UTCJul 14, 15:13 UTC3h 19m
2026-07-14 UPS606 - Jul 14, 09:05 UTCJul 14, 09:55 UTC50m
2026-07-14 UPS606 SDF → ORD Jul 14, 09:06 UTCJul 14, 10:03 UTC57m
2026-07-14 UPS9306 BHM → SDF Jul 14, 03:25 UTCJul 14, 04:20 UTC55m
2026-07-14 UPS9306 BHM → SDF Jul 14, 03:34 UTCJul 14, 04:15 UTC41m
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

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 Jul 26, 21:45 UTC.
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.