Apparatus

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sensors Mode-S transponder

A777B8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N580UP · BOEING 747-400 · operated by C C & E I LLC

Hex
A777B8
Octal
51673670
Decimal
10,975,160
Country
US
Tail
N580UP
Type
B744
No current signal · last broadcast Jul 26, 15:40 UTC
Flights observed
264
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:40 UTC

Last known position

Most recent position reported by Mode-S A777B8.

Country allocation

The ICAO 24-bit address A777B8 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
UPS94 - 14 2026-07-03
UPS67 United Parcel Service 12 2026-05-19
UPS59 - 12 2026-07-16
UPS71 - 11 2026-07-02
UPS81 - 9 2026-07-18
UPS58 - 9 2026-07-15
UPS340 United Parcel Service 9 2026-06-02
UPS109 United Parcel Service 9 2026-05-12
UPS56 - 8 2026-07-14
UPS214 United Parcel Service 8 2026-06-01
UPS70 United Parcel Service 7 2026-05-12
UPS34 - 7 2026-07-08
UPS72 - 6 2026-07-01
UPS3 United Parcel Service 6 2026-05-31
UPS63 - 5 2026-07-08
UPS11 - 5 2026-07-22
UPS108 United Parcel Service 5 2026-05-10
UPS9 United Parcel Service 4 2026-07-24
UPS82 United Parcel Service 4 2026-05-04
UPS80 - 4 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS203 PHL → CGN Jul 26, 08:10 UTCJul 26, 15:35 UTC7h 25m
2026-07-26 UPS204 CGN → PHL Jul 26, 03:30 UTCJul 26, 04:55 UTC1h 25m
2026-07-26 UPS204 CGN → PHL Jul 26, 03:30 UTCJul 26, 04:59 UTC1h 29m
2026-07-25 UPS204 CGN → PHL Jul 25, 05:00 UTCJul 25, 12:45 UTC7h 45m
2026-07-25 UPS204 CGN → PHL Jul 25, 04:59 UTCJul 25, 12:34 UTC7h 35m
2026-07-24 UPS9 SZX → CGN Jul 24, 08:55 UTCJul 24, 17:45 UTC8h 50m
2026-07-24 UPS9 SZX → CGN Jul 24, 07:30 UTCJul 24, 07:40 UTC10m
2026-07-23 UPS9 SZX → CGN Jul 23, 22:00 UTCJul 24, 02:10 UTC4h 10m
2026-07-23 UPS9 SZX → CGN Jul 23, 21:15 UTCJul 23, 21:25 UTC10m
2026-07-23 UPS8 - Jul 23, 05:40 UTCJul 23, 09:20 UTC3h 40m
2026-07-22 UPS11 ICN → TSN Jul 22, 12:35 UTCJul 22, 20:55 UTC8h 20m
2026-07-22 UPS11 - Jul 22, 03:05 UTCJul 22, 03:45 UTC40m
2026-07-21 UPS10 ICN → PVG Jul 21, 08:45 UTCJul 22, 01:05 UTC16h 20m
2026-07-20 UPS217 - Jul 20, 20:20 UTCJul 20, 22:00 UTC1h 40m
2026-07-20 UPS217 SDF → CGN Jul 20, 20:19 UTCJul 21, 04:06 UTC7h 47m
2026-07-20 UPS2401 ONT → SDF Jul 20, 04:50 UTCJul 20, 08:25 UTC3h 35m
2026-07-18 UPS81 ANC → ONT Jul 18, 01:00 UTCJul 18, 05:30 UTC4h 31m
2026-07-17 UPS81 - Jul 17, 14:39 UTCJul 17, 22:15 UTC7h 35m
2026-07-17 UPS81 - Jul 17, 00:04 UTCJul 17, 22:15 UTC22h 10m
2026-07-16 UPS81 - Jul 16, 22:40 UTCJul 17, 22:00 UTC23h 20m
2026-07-16 UPS80 - Jul 16, 18:05 UTCJul 17, 16:15 UTC22h 10m
2026-07-16 UPS80 - Jul 16, 17:25 UTCJul 17, 16:00 UTC22h 35m
2026-07-16 UPS80 - Jul 16, 09:45 UTCJul 16, 14:20 UTC4h 35m
2026-07-16 UPS59 - Jul 16, 00:15 UTCJul 16, 04:45 UTC4h 30m
2026-07-15 UPS59 HKG → ANC Jul 15, 12:25 UTCJul 15, 22:15 UTC9h 50m
2026-07-15 UPS58 - Jul 15, 06:25 UTCJul 15, 06:35 UTC10m
2026-07-14 UPS58 - Jul 14, 19:45 UTCJul 14, 20:10 UTC25m
2026-07-14 UPS58 HNL → HKG Jul 14, 19:45 UTCJul 15, 06:04 UTC10h 19m
2026-07-14 UPS56 - Jul 14, 10:20 UTCJul 14, 15:55 UTC5h 35m
2026-07-14 UPS56 ONT → HNL Jul 14, 10:16 UTCJul 14, 15:36 UTC5h 20m
2026-07-14 UPS59 - Jul 14, 00:14 UTCJul 14, 05:02 UTC4h 48m
2026-07-14 UPS59 ANC → ONT Jul 14, 00:14 UTCJul 14, 05:02 UTC4h 48m
2026-07-14 UPS59 - Jul 14, 00:40 UTCJul 14, 01:20 UTC40m
2026-07-13 UPS59 HKG → ANC Jul 13, 12:05 UTCJul 13, 21:55 UTC9h 50m
2026-07-13 UPS54D TPE → HKG Jul 13, 05:20 UTCJul 13, 06:30 UTC1h 10m
2026-07-13 UPS64D ICN → TPE Jul 13, 01:30 UTCJul 13, 03:30 UTC2h 0m
2026-07-09 UPS33 SYD → ICN Jul 9, 09:10 UTCJul 9, 19:25 UTC10h 15m
2026-07-08 UPS34 - Jul 8, 19:45 UTCJul 8, 20:10 UTC25m
2026-07-08 UPS34 HNL → SYD Jul 8, 19:48 UTCJul 9, 05:38 UTC9h 50m
2026-07-08 UPS32 SDF → HNL Jul 8, 09:35 UTCJul 8, 18:00 UTC8h 25m
2026-07-08 UPS63 ANC → SDF Jul 8, 00:05 UTCJul 8, 05:55 UTC5h 50m
2026-07-07 UPS63 HKG → ANC Jul 7, 11:40 UTCJul 7, 21:15 UTC9h 35m
2026-07-06 UPS58 - Jul 6, 19:35 UTCJul 6, 19:45 UTC10m
2026-07-06 UPS58 HNL → HKG Jul 6, 19:39 UTCJul 7, 06:11 UTC10h 32m
2026-07-06 UPS2960 - Jul 6, 04:25 UTCJul 6, 09:55 UTC5h 30m
2026-07-06 UPS2960 ONT → HNL Jul 6, 04:24 UTCJul 6, 09:48 UTC5h 24m
2026-07-05 UPS908 - Jul 5, 20:05 UTCJul 5, 23:45 UTC3h 40m
2026-07-05 UPS77 ANC → SDF Jul 5, 06:35 UTCJul 5, 12:09 UTC5h 34m
2026-07-05 UPS77 ANC → SDF Jul 5, 06:35 UTCJul 5, 12:09 UTC5h 34m
2026-07-05 UPS77 - Jul 5, 06:40 UTCJul 5, 08:00 UTC1h 20m

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 N580UP page for operator, model, and routing details .

Mode-S A777B8 frequently asked

What is Mode-S code A777B8?
A777B8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N580UP.
Where is Mode-S A777B8 registered?
Mode-S code A777B8 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 A777B8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A777B8, octal 51673670, decimal 10,975,160.
What flights does A777B8 operate?
Mode-S A777B8 has broadcast 20 distinct callsigns, including UPS94, UPS67, UPS59, UPS71, UPS81.