sensors Mode-S transponder

A42F8B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N369UP · BOEING 767-300 · operated by C C & E I LLC

Hex
A42F8B
Octal
51027613
Decimal
10,760,075
Country
US
Tail
N369UP
Type
B763
Broadcasting now · callsign UPS1081 · 36,025 ft
Flights observed
217
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Current position

A42F8B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A42F8B 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 UPS5076 SDF → EWR May 29, 20:15 UTCMay 29, 21:50 UTC1h 35m
2026-05-29 UPS5076 SDF → EWR May 29, 20:09 UTCMay 29, 21:47 UTC1h 38m
2026-05-29 UPS5971 PDX → SDF May 29, 13:30 UTCMay 29, 16:45 UTC3h 16m
2026-05-29 UPS5971 PDX → SDF May 29, 13:25 UTCMay 29, 17:25 UTC4h 0m
2026-05-29 UPS970 RFD → PDX May 29, 07:40 UTCMay 29, 11:00 UTC3h 20m
2026-05-29 UPS853 PHX → RFD May 29, 03:15 UTCMay 29, 05:50 UTC2h 35m
2026-05-28 UPS2906 DFW → ABQ May 28, 21:10 UTCMay 28, 23:15 UTC2h 5m
2026-05-28 UPS2633 OAK → DFW May 28, 13:40 UTCMay 28, 16:45 UTC3h 5m
2026-05-28 UPS962 ONT → OAK May 28, 09:35 UTCMay 28, 10:30 UTC55m
2026-05-28 UPS983 BFI → ONT May 28, 03:10 UTCMay 28, 05:15 UTC2h 5m
2026-05-28 UPS2986 SDF → BFI May 28, 00:05 UTCMay 28, 01:25 UTC1h 20m
2026-05-27 UPS2986 SDF → BFI May 27, 19:20 UTCMay 27, 22:35 UTC3h 15m
2026-05-27 UPS2029 BDL → RFD May 27, 12:05 UTCMay 27, 14:00 UTC1h 55m
2026-05-27 UPS2029 BDL → RFD May 27, 12:05 UTCMay 27, 14:04 UTC1h 59m
2026-05-27 UPS1066 SDF → BDL May 27, 08:20 UTCMay 27, 09:50 UTC1h 30m
2026-05-27 UPS1066 SDF → BDL May 27, 08:16 UTCMay 27, 09:55 UTC1h 39m
2026-05-27 UPS921 SAN → SDF May 27, 03:04 UTCMay 27, 06:34 UTC3h 30m
2026-05-26 UPS2636 SDF → SAN May 26, 20:00 UTCMay 26, 23:45 UTC3h 45m
2026-05-26 UPS5605 ORD → SDF May 26, 13:04 UTCMay 26, 13:54 UTC50m
2026-05-23 UPS602 SDF → ORD May 23, 07:45 UTCMay 23, 08:35 UTC50m
2026-05-23 UPS602 SDF → ORD May 23, 07:44 UTCMay 23, 08:46 UTC1h 2m
2026-05-23 UPS1013 BOS → SDF May 23, 02:15 UTCMay 23, 04:20 UTC2h 4m
2026-05-23 UPS1013 BOS → SDF May 23, 02:07 UTCMay 23, 04:17 UTC2h 10m
2026-05-22 UPS5012 ONT → BOS May 22, 18:20 UTCMay 22, 23:05 UTC4h 45m
2026-05-22 UPS5012 ONT → BOS May 22, 18:16 UTCMay 22, 23:06 UTC4h 50m
2026-05-22 UPS918 SDF → DEN May 22, 07:55 UTCMay 22, 11:40 UTC3h 45m
2026-05-22 UPS918 SDF → DEN May 22, 07:51 UTCMay 22, 11:38 UTC3h 47m
2026-05-22 UPS767 DFW → SDF May 22, 02:55 UTCMay 22, 04:30 UTC1h 35m
2026-05-22 UPS767 DFW → SDF May 22, 02:50 UTCMay 22, 04:24 UTC1h 34m
2026-05-21 UPS2756 SDF → DFW May 21, 19:15 UTCMay 21, 22:00 UTC2h 45m
2026-05-21 UPS2756 SDF → DFW May 21, 19:16 UTCMay 21, 21:48 UTC2h 32m
2026-05-21 UPS2805 DEN → SDF May 21, 13:10 UTCMay 21, 15:00 UTC1h 50m
2026-05-21 UPS2805 DEN → SDF May 21, 13:06 UTCMay 21, 14:57 UTC1h 51m
2026-05-21 UPS802 SDF → DEN May 21, 07:40 UTCMay 21, 10:00 UTC2h 20m
2026-05-21 UPS802 SDF → DEN May 21, 07:39 UTCMay 21, 10:04 UTC2h 25m
2026-05-21 UPS9743 LCK → ORD May 21, 01:30 UTCMay 21, 03:40 UTC2h 10m
2026-05-21 UPS9743 LCK → ORD May 21, 01:39 UTCMay 21, 03:33 UTC1h 54m
2026-05-20 UPS5334 ONT → TPA May 20, 21:21 UTCMay 20, 23:44 UTC2h 23m
2026-05-20 UPS5334 ONT → TPA May 20, 21:25 UTCMay 20, 23:45 UTC2h 20m
2026-05-20 UPS2633 OAK → DFW May 20, 14:45 UTCMay 20, 17:40 UTC2h 55m
2026-05-20 UPS2633 OAK → DFW May 20, 14:43 UTCMay 20, 17:37 UTC2h 54m
2026-05-20 UPS946 SDF → OAK May 20, 07:50 UTCMay 20, 12:05 UTC4h 15m
2026-05-20 UPS946 SDF → OAK May 20, 07:45 UTCMay 20, 11:56 UTC4h 11m
2026-05-20 UPS1013 BOS → SDF May 20, 02:25 UTCMay 20, 04:30 UTC2h 5m
2026-05-20 UPS1013 BOS → SDF May 20, 02:15 UTCMay 20, 04:26 UTC2h 11m
2026-05-19 UPS5012 ONT → BOS May 19, 18:15 UTCMay 19, 23:15 UTC5h 0m
2026-05-19 UPS9763 BOS → EWR May 19, 11:50 UTCMay 19, 13:50 UTC2h 0m
2026-05-19 UPS810 RFD → DEN May 19, 07:40 UTCMay 19, 09:30 UTC1h 50m
2026-05-19 UPS853 PHX → RFD May 19, 03:25 UTCMay 19, 06:15 UTC2h 50m
2026-05-17 UPS5852 SDF → PHX May 17, 20:25 UTCMay 17, 23:50 UTC3h 25m

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 N369UP page for operator, model, and routing details .

Mode-S A42F8B frequently asked

What is Mode-S code A42F8B?
A42F8B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N369UP.
Where is Mode-S A42F8B registered?
Mode-S code A42F8B 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 A42F8B broadcasting right now?
Yes. Mode-S A42F8B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A42F8B, octal 51027613, decimal 10,760,075.
What flights does A42F8B operate?
Mode-S A42F8B has broadcast 20 distinct callsigns, including UPS2463, UPS2968, UPS5978, UPS2633, UPS2462.