Apparatus

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sensors Mode-S transponder

A333B5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N305UP · BOEING 767-300 · operated by UNITED PARCEL SERVICE CO

Hex
A333B5
Octal
50631665
Decimal
10,695,605
Country
US
Tail
N305UP
Type
B763
No current signal · last broadcast Jul 26, 05:55 UTC
Flights observed
387
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 05:55 UTC

Last known position

Most recent position reported by Mode-S A333B5.

Country allocation

The ICAO 24-bit address A333B5 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 United Parcel Service 19 2026-07-24
UPS166 United Parcel Service 15 2026-07-24
UPS195 - 10 2026-07-22
UPS146 United Parcel Service 10 2026-07-20
UPS232 United Parcel Service 9 2026-05-23
UPS196 - 8 2026-07-21
UPS127 United Parcel Service 8 2026-07-24
UPS118 - 8 2026-07-14
UPS237 United Parcel Service 6 2026-05-22
UPS137 - 6 2026-07-18
UPS1340 - 6 2026-06-24
UPS126 - 6 2026-07-17
UPS104 - 6 2026-06-28
UPS973 - 5 2026-06-27
UPS1338 - 5 2026-06-23
UPS1302 - 5 2026-06-18
UPS793 United Parcel Service 4 2026-06-12
UPS5978 United Parcel Service 4 2026-06-07
UPS5929 United Parcel Service 4 2026-06-05
UPS5345 - 4 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS118D - Jul 26, 04:25 UTCJul 26, 05:55 UTC1h 30m
2026-07-25 UPS117 KIX → NRT Jul 25, 10:20 UTCJul 25, 11:40 UTC1h 20m
2026-07-24 UPS127 SZX → KIX Jul 24, 22:15 UTCJul 24, 23:15 UTC1h 0m
2026-07-24 UPS166 HKG → SIN Jul 24, 17:35 UTCJul 24, 17:55 UTC20m
2026-07-24 UPS166 HKG → SIN Jul 24, 14:15 UTCJul 24, 14:40 UTC25m
2026-07-24 UPS169 HKG → HKG Jul 24, 08:55 UTCJul 24, 12:05 UTC3h 10m
2026-07-24 UPS167 SIN → SZX Jul 24, 04:30 UTCJul 24, 04:55 UTC25m
2026-07-24 UPS167 SIN → SZX Jul 24, 01:35 UTCJul 24, 01:50 UTC15m
2026-07-23 UPS167 SIN → SZX Jul 23, 22:55 UTCJul 23, 23:25 UTC30m
2026-07-23 UPS167 SIN → SZX Jul 23, 20:10 UTCJul 23, 20:20 UTC10m
2026-07-23 UPS166 HKG → SIN Jul 23, 17:35 UTCJul 23, 17:55 UTC20m
2026-07-23 UPS166 HKG → SIN Jul 23, 14:20 UTCJul 23, 14:40 UTC20m
2026-07-23 UPS166 HKG → SIN Jul 23, 10:55 UTCJul 23, 11:15 UTC20m
2026-07-23 UPS166 HKG → SIN Jul 23, 08:10 UTCJul 23, 08:25 UTC15m
2026-07-23 UPS167 SIN → SZX Jul 23, 04:05 UTCJul 23, 04:20 UTC15m
2026-07-23 UPS167 SIN → SZX Jul 23, 00:55 UTCJul 23, 01:15 UTC20m
2026-07-22 UPS167 SIN → SZX Jul 22, 22:40 UTCJul 22, 23:10 UTC30m
2026-07-22 UPS195 - Jul 22, 16:00 UTCJul 22, 16:20 UTC20m
2026-07-22 UPS195 - Jul 22, 13:20 UTCJul 22, 14:00 UTC40m
2026-07-21 UPS196 - Jul 21, 22:25 UTCJul 21, 23:10 UTC45m
2026-07-21 UPS196 - Jul 21, 20:10 UTCJul 21, 20:20 UTC10m
2026-07-21 UPS145 - Jul 21, 15:10 UTCJul 21, 15:35 UTC25m
2026-07-21 UPS144 - Jul 21, 11:50 UTCJul 21, 13:10 UTC1h 20m
2026-07-21 UPS147 - Jul 21, 00:35 UTCJul 21, 01:10 UTC35m
2026-07-20 UPS146 SZX → BKK Jul 20, 22:35 UTCJul 20, 23:05 UTC30m
2026-07-20 UPS146 SZX → BKK Jul 20, 20:45 UTCJul 20, 20:55 UTC10m
2026-07-20 UPS145 - Jul 20, 17:30 UTCJul 20, 17:45 UTC15m
2026-07-20 UPS145 - Jul 20, 15:20 UTCJul 20, 15:50 UTC30m
2026-07-20 UPS144 - Jul 20, 12:35 UTCJul 20, 13:20 UTC45m
2026-07-19 UPS147 - Jul 19, 05:25 UTCJul 19, 05:45 UTC20m
2026-07-19 UPS146 SZX → BKK Jul 19, 03:30 UTCJul 19, 03:45 UTC15m
2026-07-19 UPS146 SZX → BKK Jul 19, 02:05 UTCJul 19, 02:40 UTC35m
2026-07-19 UPS146 SZX → BKK Jul 19, 00:10 UTCJul 19, 00:25 UTC15m
2026-07-18 UPS146 SZX → BKK Jul 18, 22:15 UTCJul 18, 22:25 UTC10m
2026-07-18 UPS137 - Jul 18, 18:55 UTCJul 18, 19:10 UTC15m
2026-07-18 UPS137 - Jul 18, 17:20 UTCJul 18, 17:50 UTC30m
2026-07-17 UPS138 SZX → SYD Jul 17, 19:55 UTCJul 17, 21:25 UTC1h 30m
2026-07-17 UPS126 - Jul 17, 16:44 UTCJul 17, 17:05 UTC20m
2026-07-17 UPS126 - Jul 17, 13:35 UTCJul 17, 14:30 UTC55m
2026-07-17 UPS125 - Jul 17, 11:04 UTCJul 17, 11:50 UTC45m
2026-07-17 UPS124 - Jul 17, 01:00 UTCJul 17, 01:25 UTC25m
2026-07-16 UPS127 - Jul 16, 22:40 UTCJul 16, 23:44 UTC1h 5m
2026-07-16 UPS127 - Jul 16, 20:25 UTCJul 16, 20:35 UTC10m
2026-07-16 UPS195 - Jul 16, 16:00 UTCJul 16, 16:19 UTC20m
2026-07-16 UPS195 - Jul 16, 13:25 UTCJul 16, 14:05 UTC40m
2026-07-16 UPS196 - Jul 16, 00:10 UTCJul 16, 00:50 UTC40m
2026-07-15 UPS166 - Jul 15, 18:40 UTCJul 15, 19:00 UTC20m
2026-07-15 UPS166 - Jul 15, 14:55 UTCJul 15, 15:20 UTC25m
2026-07-15 UPS166 - Jul 15, 12:40 UTCJul 15, 13:10 UTC30m
2026-07-15 UPS166 - Jul 15, 09:55 UTCJul 15, 10:10 UTC15m

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 N305UP page for operator, model, and routing details .

Mode-S A333B5 frequently asked

What is Mode-S code A333B5?
A333B5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N305UP.
Where is Mode-S A333B5 registered?
Mode-S code A333B5 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 A333B5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 05:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A333B5, octal 50631665, decimal 10,695,605.
What flights does A333B5 operate?
Mode-S A333B5 has broadcast 20 distinct callsigns, including UPS167, UPS166, UPS195, UPS146, UPS232.