Apparatus

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sensors Mode-S transponder

A48850

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N391UP · BOEING 767-300 · operated by CARGO AIRCRAFT MANAGEMENT INC

Hex
A48850
Octal
51104120
Decimal
10,782,800
Country
US
Tail
N391UP
Type
B763
No current signal · last broadcast 6h ago
Flights observed
156
Distinct callsigns
19
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A48850.

Country allocation

The ICAO 24-bit address A48850 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 19 distinct

Callsign Airline Flights Last seen
UPS266 - 26 2026-07-08
UPS267 United Parcel Service 24 2026-07-08
UPS284 - 12 2026-07-10
UPS285 - 10 2026-07-10
UPS260 - 10 2026-07-03
UPS259 - 10 2026-07-03
UPS243 - 10 2026-07-09
UPS242 - 10 2026-07-09
UPS272 - 6 2026-06-24
UPS249 - 6 2026-07-13
UPS248 - 6 2026-07-13
UPS273 - 5 2026-06-24
UPS269 - 5 2026-07-02
UPS268 - 5 2026-07-02
UPS256 - 4 2026-07-14
UPS257 - 3 2026-07-07
UPS287 United Parcel Service 2 2026-06-15
UPS239 - 1 2026-07-12
UPS234 - 1 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UPS256 - Jul 14, 01:40 UTCJul 14, 03:45 UTC2h 5m
2026-07-13 UPS249 DUB → CGN Jul 13, 20:40 UTCJul 13, 22:00 UTC1h 20m
2026-07-13 UPS249 - Jul 13, 18:50 UTCJul 13, 19:15 UTC25m
2026-07-13 UPS248 - Jul 13, 04:10 UTCJul 13, 04:40 UTC30m
2026-07-13 UPS248 CGN → DUB Jul 13, 01:35 UTCJul 13, 03:01 UTC1h 25m
2026-07-12 UPS239 EMA → CGN Jul 12, 23:05 UTCJul 13, 00:01 UTC55m
2026-07-12 UPS234 CGN → EMA Jul 12, 20:35 UTCJul 12, 21:35 UTC1h 0m
2026-07-10 UPS285 - Jul 10, 20:30 UTCJul 10, 21:20 UTC50m
2026-07-10 UPS285 - Jul 10, 18:30 UTCJul 10, 19:10 UTC40m
2026-07-10 UPS284 MMX → OSL Jul 10, 03:30 UTCJul 10, 04:20 UTC50m
2026-07-10 UPS284 - Jul 10, 01:15 UTCJul 10, 02:15 UTC1h 0m
2026-07-09 UPS243 BCN → CGN Jul 9, 21:20 UTCJul 9, 23:05 UTC1h 45m
2026-07-09 UPS243 VLC → BCN Jul 9, 19:10 UTCJul 9, 19:55 UTC45m
2026-07-09 UPS242 BCN → VLC Jul 9, 04:45 UTCJul 9, 05:20 UTC35m
2026-07-09 UPS242 CGN → BCN Jul 9, 01:50 UTCJul 9, 03:30 UTC1h 40m
2026-07-08 UPS267 IST → TLV Jul 8, 21:35 UTCJul 8, 23:20 UTC1h 45m
2026-07-08 UPS266 - Jul 8, 02:05 UTCJul 8, 03:25 UTC1h 20m
2026-07-07 UPS257 MAD → CGN Jul 7, 20:55 UTCJul 7, 23:00 UTC2h 5m
2026-07-07 UPS256 CGN → MAD Jul 7, 01:50 UTCJul 7, 03:40 UTC1h 50m
2026-07-06 UPS243 BCN → CGN Jul 6, 21:15 UTCJul 6, 23:05 UTC1h 50m
2026-07-06 UPS243 VLC → BCN Jul 6, 19:20 UTCJul 6, 20:00 UTC40m
2026-07-06 UPS242 BCN → VLC Jul 6, 03:35 UTCJul 6, 04:10 UTC35m
2026-07-06 UPS242 CGN → BCN Jul 6, 00:55 UTCJul 6, 02:25 UTC1h 30m
2026-07-03 UPS259 - Jul 3, 21:40 UTCJul 3, 22:55 UTC1h 15m
2026-07-03 UPS260 CGN → VCE Jul 3, 02:05 UTCJul 3, 03:05 UTC1h 0m
2026-07-02 UPS269 - Jul 2, 19:20 UTCJul 2, 22:00 UTC2h 40m
2026-07-02 UPS268 - Jul 2, 02:30 UTCJul 2, 05:05 UTC2h 35m
2026-07-01 UPS257 - Jul 1, 21:15 UTCJul 1, 23:15 UTC2h 0m
2026-07-01 UPS256 - Jul 1, 01:40 UTCJul 1, 03:35 UTC1h 55m
2026-06-30 UPS269 - Jun 30, 19:35 UTCJun 30, 22:10 UTC2h 35m
2026-06-30 UPS268 - Jun 30, 03:40 UTCJun 30, 06:15 UTC2h 35m
2026-06-29 UPS257 MAD → CGN Jun 29, 21:09 UTCJun 29, 23:09 UTC2h 0m
2026-06-29 UPS256 - Jun 29, 00:24 UTCJun 29, 02:35 UTC2h 10m
2026-06-26 UPS259 VCE → CGN Jun 26, 21:55 UTCJun 26, 23:00 UTC1h 5m
2026-06-26 UPS260 CGN → VCE Jun 26, 02:09 UTCJun 26, 03:10 UTC1h 0m
2026-06-25 UPS269 - Jun 25, 19:29 UTCJun 25, 22:20 UTC2h 50m
2026-06-25 UPS268 - Jun 25, 02:39 UTCJun 25, 05:15 UTC2h 35m
2026-06-24 UPS273 - Jun 24, 19:20 UTCJun 24, 20:40 UTC1h 20m
2026-06-24 UPS272 CGN → WAW Jun 24, 02:24 UTCJun 24, 03:40 UTC1h 15m
2026-06-23 UPS259 VCE → CGN Jun 23, 20:54 UTCJun 23, 22:10 UTC1h 15m
2026-06-23 UPS260 CGN → VCE Jun 23, 01:54 UTCJun 23, 02:55 UTC1h 0m
2026-06-22 UPS243 BCN → CGN Jun 22, 21:05 UTCJun 22, 22:44 UTC1h 40m
2026-06-22 UPS243 VLC → BCN Jun 22, 19:05 UTCJun 22, 19:49 UTC45m
2026-06-22 UPS242 - Jun 22, 03:35 UTCJun 22, 04:00 UTC25m
2026-06-22 UPS242 CGN → BCN Jun 22, 00:44 UTCJun 22, 02:25 UTC1h 40m
2026-06-19 UPS267 IST → TLV Jun 19, 22:49 UTCJun 20, 00:19 UTC1h 30m
2026-06-19 UPS266 CGN → FCO Jun 19, 01:54 UTCJun 19, 03:20 UTC1h 25m
2026-06-18 UPS285 - Jun 18, 20:20 UTCJun 18, 21:20 UTC1h 0m
2026-06-18 UPS285 - Jun 18, 18:35 UTCJun 18, 19:25 UTC50m
2026-06-18 UPS284 - Jun 18, 03:45 UTCJun 18, 04:40 UTC55m

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 N391UP page for operator, model, and routing details .

Mode-S A48850 frequently asked

What is Mode-S code A48850?
A48850 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N391UP.
Where is Mode-S A48850 registered?
Mode-S code A48850 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 A48850 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A48850, octal 51104120, decimal 10,782,800.
What flights does A48850 operate?
Mode-S A48850 has broadcast 19 distinct callsigns, including UPS266, UPS267, UPS284, UPS285, UPS260.