Apparatus

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sensors Mode-S transponder

A4CC29

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N408UP · BOEING 757-200 · operated by UNITED PARCEL SERVICE CO

Hex
A4CC29
Octal
51146051
Decimal
10,800,169
Country
US
Tail
N408UP
Type
B752
No current signal · last broadcast 11h ago
Flights observed
232
Distinct callsigns
20
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A4CC29.

Country allocation

The ICAO 24-bit address A4CC29 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
UPS1124 - 9 2026-06-30
UPS1347 - 7 2026-07-14
UPS1316 United Parcel Service 7 2026-06-12
UPS1123 - 7 2026-06-25
UPS796 United Parcel Service 6 2026-06-04
UPS757 - 6 2026-06-26
UPS554 - 6 2026-06-19
UPS495 - 6 2026-06-20
UPS872 - 5 2026-07-08
UPS620 United Parcel Service 5 2026-06-09
UPS619 United Parcel Service 5 2026-06-10
UPS5794 United Parcel Service 5 2026-06-25
UPS496 United Parcel Service 5 2026-06-19
UPS992 - 4 2026-07-03
UPS9884 - 4 2026-07-08
UPS795 United Parcel Service 4 2026-06-05
UPS780 - 4 2026-07-14
UPS705 United Parcel Service 4 2026-05-16
UPS5871 United Parcel Service 4 2026-06-05
UPS5793 - 4 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UPS780 SAT → LRD Jul 14, 12:00 UTCJul 14, 12:40 UTC40m
2026-07-14 UPS780 SAT → LRD Jul 14, 12:00 UTCJul 14, 12:30 UTC30m
2026-07-14 UPS780 - Jul 14, 08:55 UTCJul 14, 10:25 UTC1h 30m
2026-07-14 UPS780 - Jul 14, 06:55 UTCJul 14, 07:45 UTC50m
2026-07-14 UPS1347 RSW → SDF Jul 14, 00:25 UTCJul 14, 02:20 UTC1h 55m
2026-07-14 UPS1347 RSW → SDF Jul 14, 00:21 UTCJul 14, 02:14 UTC1h 53m
2026-07-10 UPS1348 - Jul 10, 08:50 UTCJul 10, 10:30 UTC1h 40m
2026-07-10 UPS1348 SDF → RSW Jul 10, 08:47 UTCJul 10, 10:34 UTC1h 47m
2026-07-10 UPS1365 ABY → SDF Jul 10, 03:05 UTCJul 10, 04:20 UTC1h 15m
2026-07-10 UPS9844 - Jul 10, 01:15 UTCJul 10, 02:00 UTC45m
2026-07-09 UPS1244 - Jul 9, 09:10 UTCJul 9, 09:35 UTC25m
2026-07-09 UPS1244 GSO → CAE Jul 9, 09:10 UTCJul 9, 09:41 UTC31m
2026-07-09 UPS1244 - Jul 9, 07:35 UTCJul 9, 08:20 UTC45m
2026-07-08 UPS2873 - Jul 8, 12:30 UTCJul 8, 14:50 UTC2h 20m
2026-07-08 UPS2873 ABQ → SDF Jul 8, 12:32 UTCJul 8, 14:57 UTC2h 25m
2026-07-08 UPS872 - Jul 8, 09:00 UTCJul 8, 11:25 UTC2h 25m
2026-07-08 UPS872 SDF → ABQ Jul 8, 09:00 UTCJul 8, 11:20 UTC2h 20m
2026-07-08 UPS895 - Jul 8, 03:10 UTCJul 8, 06:35 UTC3h 25m
2026-07-08 UPS9884 - Jul 8, 00:45 UTCJul 8, 02:05 UTC1h 20m
2026-07-08 UPS9884 BFI → RNO Jul 8, 00:34 UTCJul 8, 01:55 UTC1h 21m
2026-07-07 UPS5980 - Jul 7, 19:00 UTCJul 7, 22:15 UTC3h 15m
2026-07-07 UPS5980 DFW → BFI Jul 7, 18:55 UTCJul 7, 22:31 UTC3h 36m
2026-07-07 UPS5833 MHR → DFW Jul 7, 13:40 UTCJul 7, 16:35 UTC2h 55m
2026-07-07 UPS5833 MHR → DFW Jul 7, 13:38 UTCJul 7, 16:36 UTC2h 58m
2026-07-07 UPS5833 - Jul 7, 11:30 UTCJul 7, 12:35 UTC1h 5m
2026-07-07 UPS834 - Jul 7, 09:05 UTCJul 7, 10:30 UTC1h 25m
2026-07-07 UPS834 ONT → BOI Jul 7, 09:04 UTCJul 7, 10:32 UTC1h 28m
2026-07-07 UPS991 GEG → ONT Jul 7, 02:40 UTCJul 7, 04:50 UTC2h 10m
2026-07-07 UPS991 GEG → ONT Jul 7, 02:43 UTCJul 7, 04:39 UTC1h 56m
2026-07-03 UPS992 - Jul 3, 09:15 UTCJul 3, 11:15 UTC2h 0m
2026-07-03 UPS992 ONT → GEG Jul 3, 09:13 UTCJul 3, 11:15 UTC2h 2m
2026-07-03 UPS785 - Jul 3, 02:20 UTCJul 3, 03:50 UTC1h 30m
2026-07-03 UPS785 ELP → ONT Jul 3, 02:20 UTCJul 3, 03:46 UTC1h 26m
2026-07-02 UPS2796 - Jul 2, 21:20 UTCJul 2, 23:55 UTC2h 35m
2026-07-02 UPS9745 - Jul 2, 08:40 UTCJul 2, 09:40 UTC1h 0m
2026-07-02 UPS1278 SDF → RDU Jul 2, 06:45 UTCJul 2, 07:45 UTC1h 0m
2026-07-02 UPS1278 SDF → RDU Jul 2, 06:47 UTCJul 2, 07:42 UTC55m
2026-07-02 UPS9306 - Jul 2, 01:05 UTCJul 2, 02:40 UTC1h 35m
2026-06-30 UPS1124 - Jun 30, 08:50 UTCJun 30, 10:20 UTC1h 30m
2026-06-30 UPS1124 SDF → ALB Jun 30, 08:45 UTCJun 30, 10:21 UTC1h 36m
2026-06-30 UPS613 - Jun 30, 03:30 UTCJun 30, 04:20 UTC50m
2026-06-30 UPS613 GYY → SDF Jun 30, 03:25 UTCJun 30, 04:16 UTC51m
2026-06-30 UPS613 - Jun 30, 01:25 UTCJun 30, 01:35 UTC11m
2026-06-28 UPS9615 - Jun 28, 23:14 UTCJun 29, 00:20 UTC1h 5m
2026-06-28 UPS9615 SDF → ORD Jun 28, 23:11 UTCJun 29, 00:13 UTC1h 2m
2026-06-27 UPS581 - Jun 27, 02:09 UTCJun 27, 03:49 UTC1h 40m
2026-06-26 UPS582 - Jun 26, 11:40 UTCJun 26, 13:30 UTC1h 50m
2026-06-26 UPS757 - Jun 26, 02:34 UTCJun 26, 04:34 UTC2h 0m
2026-06-25 UPS5794 SDF → LBB Jun 25, 20:30 UTCJun 25, 22:34 UTC2h 5m
2026-06-25 UPS5793 - Jun 25, 12:19 UTCJun 25, 14:20 UTC2h 0m

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 N408UP page for operator, model, and routing details .

Mode-S A4CC29 frequently asked

What is Mode-S code A4CC29?
A4CC29 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N408UP.
Where is Mode-S A4CC29 registered?
Mode-S code A4CC29 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 A4CC29 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4CC29, octal 51146051, decimal 10,800,169.
What flights does A4CC29 operate?
Mode-S A4CC29 has broadcast 20 distinct callsigns, including UPS1124, UPS1347, UPS1316, UPS1123, UPS796.