Apparatus

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sensors Mode-S transponder

A129D9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N174UP · AIRBUS A-300-600 · operated by UNITED PARCEL SERVICE CO

Hex
A129D9
Octal
50224731
Decimal
10,562,009
Country
US
Tail
N174UP
Type
A306
No current signal · last broadcast Jul 25, 22:05 UTC
Flights observed
385
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 22:05 UTC

Last known position

Most recent position reported by Mode-S A129D9.

Country allocation

The ICAO 24-bit address A129D9 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
UPS701 - 17 2026-07-10
UPS5804 - 10 2026-07-01
UPS5702 - 9 2026-07-09
UPS954 United Parcel Service 6 2026-07-25
UPS7803 - 6 2026-07-10
UPS592 - 6 2026-06-25
UPS5556 United Parcel Service 6 2026-04-16
UPS1125 - 6 2026-07-14
UPS809 - 5 2026-07-02
UPS702 - 5 2026-07-10
UPS5555 United Parcel Service 5 2026-06-17
UPS5481 - 5 2026-07-09
UPS5384 United Parcel Service 5 2026-07-25
UPS5383 - 5 2026-06-26
UPS2049 United Parcel Service 5 2026-06-10
UPS1384 - 5 2026-06-26
UPS1057 - 5 2026-07-01
UPS897 United Parcel Service 4 2026-07-23
UPS661 United Parcel Service 4 2026-07-22
UPS636 United Parcel Service 4 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UPS5384 SDF → MEM Jul 25, 21:05 UTCJul 25, 22:05 UTC1h 0m
2026-07-25 UPS5384 SDF → MEM Jul 25, 21:00 UTCJul 25, 22:06 UTC1h 6m
2026-07-25 UPS5957 MHR → SDF Jul 25, 13:15 UTCJul 25, 16:50 UTC3h 35m
2026-07-25 UPS5957 MHR → SDF Jul 25, 13:14 UTCJul 25, 16:50 UTC3h 36m
2026-07-25 UPS954 ONT → RNO Jul 25, 07:05 UTCJul 25, 10:55 UTC3h 50m
2026-07-25 UPS1443 LCK → SDF Jul 25, 03:25 UTCJul 25, 04:00 UTC35m
2026-07-24 UPS1444 SDF → LCK Jul 24, 08:25 UTCJul 24, 08:55 UTC30m
2026-07-24 UPS1231 RIC → SDF Jul 24, 02:55 UTCJul 24, 04:05 UTC1h 10m
2026-07-23 UPS5236 SDF → RIC Jul 23, 22:10 UTCJul 23, 23:15 UTC1h 5m
2026-07-23 UPS2895 RNO → SDF Jul 23, 13:55 UTCJul 23, 17:25 UTC3h 30m
2026-07-23 UPS954 ONT → RNO Jul 23, 12:30 UTCJul 23, 12:50 UTC20m
2026-07-23 UPS954 ONT → RNO Jul 23, 10:25 UTCJul 23, 11:20 UTC55m
2026-07-23 UPS897 RNO → ONT Jul 23, 04:10 UTCJul 23, 05:05 UTC55m
2026-07-23 UPS897 RNO → ONT Jul 23, 02:55 UTCJul 23, 03:20 UTC25m
2026-07-23 UPS2894 - Jul 23, 00:25 UTCJul 23, 00:40 UTC15m
2026-07-22 UPS2894 - Jul 22, 18:50 UTCJul 22, 22:45 UTC3h 55m
2026-07-22 UPS2787 DFW → SDF Jul 22, 11:20 UTCJul 22, 13:20 UTC2h 0m
2026-07-22 UPS661 MCI → SDF Jul 22, 02:35 UTCJul 22, 03:40 UTC1h 5m
2026-07-21 UPS5674 RFD → MCI Jul 21, 22:30 UTCJul 21, 23:00 UTC30m
2026-07-21 UPS5674 RFD → MCI Jul 21, 20:20 UTCJul 21, 21:20 UTC1h 0m
2026-07-21 UPS2627 - Jul 21, 14:00 UTCJul 21, 17:10 UTC3h 10m
2026-07-21 UPS914 SDF → BUR Jul 21, 07:45 UTCJul 21, 11:30 UTC3h 45m
2026-07-21 UPS1207 BWI → SDF Jul 21, 02:00 UTCJul 21, 03:10 UTC1h 10m
2026-07-19 UPS5218 SDF → BWI Jul 19, 21:45 UTCJul 19, 22:55 UTC1h 10m
2026-07-19 UPS5771 IAH → SDF Jul 19, 11:15 UTCJul 19, 13:00 UTC1h 45m
2026-07-18 UPS5770 RFD → DFW Jul 18, 21:15 UTCJul 18, 22:55 UTC1h 40m
2026-07-14 UPS5285 - Jul 14, 12:20 UTCJul 14, 13:10 UTC50m
2026-07-14 UPS5285 CLT → SDF Jul 14, 12:30 UTCJul 14, 13:08 UTC38m
2026-07-14 UPS1286 - Jul 14, 09:25 UTCJul 14, 10:20 UTC55m
2026-07-14 UPS1286 SDF → CLT Jul 14, 09:05 UTCJul 14, 10:17 UTC1h 12m
2026-07-14 UPS1125 JFK → SDF Jul 14, 03:17 UTCJul 14, 04:42 UTC1h 25m
2026-07-14 UPS1125 JFK → SDF Jul 14, 03:15 UTCJul 14, 04:45 UTC1h 30m
2026-07-12 UPS5114 - Jul 12, 20:25 UTCJul 12, 22:15 UTC1h 50m
2026-07-12 UPS929 - Jul 12, 11:30 UTCJul 12, 15:05 UTC3h 35m
2026-07-10 UPS7803 MSY → ONT Jul 10, 12:40 UTCJul 10, 16:00 UTC3h 20m
2026-07-10 UPS7803 MSY → ONT Jul 10, 12:43 UTCJul 10, 15:51 UTC3h 8m
2026-07-10 UPS702 - Jul 10, 09:35 UTCJul 10, 11:00 UTC1h 25m
2026-07-10 UPS702 SDF → MSY Jul 10, 09:39 UTCJul 10, 10:56 UTC1h 17m
2026-07-10 UPS701 - Jul 10, 04:00 UTCJul 10, 04:50 UTC50m
2026-07-10 UPS701 - Jul 10, 01:20 UTCJul 10, 02:10 UTC50m
2026-07-09 UPS5702 - Jul 9, 20:25 UTCJul 9, 21:45 UTC1h 20m
2026-07-09 UPS5481 - Jul 9, 12:05 UTCJul 9, 12:55 UTC50m
2026-07-09 UPS5481 DTW → SDF Jul 9, 12:01 UTCJul 9, 12:50 UTC49m
2026-07-09 UPS1488 - Jul 9, 08:30 UTCJul 9, 09:15 UTC45m
2026-07-09 UPS1488 RFD → DTW Jul 9, 08:28 UTCJul 9, 09:08 UTC40m
2026-07-09 UPS1125 - Jul 9, 03:00 UTCJul 9, 04:50 UTC1h 50m
2026-07-08 UPS1126 - Jul 8, 08:55 UTCJul 8, 10:40 UTC1h 45m
2026-07-08 UPS1126 RFD → JFK Jul 8, 08:58 UTCJul 8, 10:33 UTC1h 35m
2026-07-08 UPS1125 JFK → RFD Jul 8, 06:02 UTCJul 8, 07:44 UTC1h 42m
2026-07-08 UPS1125 - Jul 8, 05:55 UTCJul 8, 07:50 UTC1h 55m

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 N174UP page for operator, model, and routing details .

Mode-S A129D9 frequently asked

What is Mode-S code A129D9?
A129D9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N174UP.
Where is Mode-S A129D9 registered?
Mode-S code A129D9 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 A129D9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 22:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A129D9, octal 50224731, decimal 10,562,009.
What flights does A129D9 operate?
Mode-S A129D9 has broadcast 20 distinct callsigns, including UPS701, UPS5804, UPS5702, UPS954, UPS7803.