Apparatus

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sensors Mode-S transponder

A420AF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N365UP · BOEING 767-300 · operated by CC & E I LLC

Hex
A420AF
Octal
51020257
Decimal
10,756,271
Country
US
Tail
N365UP
Type
B763
No current signal · last broadcast Jul 25, 15:45 UTC
Flights observed
380
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 15:45 UTC

Last known position

Most recent position reported by Mode-S A420AF.

Country allocation

The ICAO 24-bit address A420AF 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
UPS841 United Parcel Service 7 2026-07-21
UPS5306 - 7 2026-07-15
UPS2859 United Parcel Service 6 2026-06-11
UPS1303 - 6 2026-07-16
UPS858 United Parcel Service 5 2026-06-11
UPS400 - 5 2026-06-21
UPS2854 - 5 2026-06-30
UPS1334 - 5 2026-07-09
UPS1302 - 5 2026-07-17
UPS1063 United Parcel Service 5 2026-06-12
UPS956 - 4 2026-07-04
UPS923 United Parcel Service 4 2026-04-18
UPS842 - 4 2026-07-01
UPS5981 United Parcel Service 4 2026-05-29
UPS5896 United Parcel Service 4 2026-06-06
UPS5364 - 4 2026-07-08
UPS2969 United Parcel Service 4 2026-04-17
UPS2805 United Parcel Service 4 2026-05-08
UPS2344 United Parcel Service 4 2026-07-23
UPS2115 United Parcel Service 4 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UPS5801 DEN → SDF Jul 25, 13:32 UTCJul 25, 15:40 UTC2h 8m
2026-07-25 UPS5801 DEN → SDF Jul 25, 13:35 UTCJul 25, 15:45 UTC2h 10m
2026-07-25 UPS802 SDF → DEN Jul 25, 08:30 UTCJul 25, 10:40 UTC2h 10m
2026-07-25 UPS1321 JAX → SDF Jul 25, 03:15 UTCJul 25, 04:15 UTC1h 0m
2026-07-25 UPS1321 JAX → SDF Jul 25, 01:40 UTCJul 25, 02:20 UTC40m
2026-07-24 UPS5338 SDF → JAX Jul 24, 21:00 UTCJul 24, 22:25 UTC1h 25m
2026-07-24 UPS5567 MSP → SDF Jul 24, 12:20 UTCJul 24, 13:40 UTC1h 20m
2026-07-24 UPS560 - Jul 24, 08:50 UTCJul 24, 10:20 UTC1h 30m
2026-07-24 UPS9815 IAH → SAT Jul 24, 05:25 UTCJul 24, 06:45 UTC1h 20m
2026-07-24 UPS1323 MCO → PHL Jul 24, 01:20 UTCJul 24, 03:15 UTC1h 55m
2026-07-23 UPS2344 ONT → MCO Jul 23, 18:45 UTCJul 23, 23:10 UTC4h 25m
2026-07-23 UPS5609 ORD → ONT Jul 23, 11:30 UTCJul 23, 15:05 UTC3h 35m
2026-07-23 UPS606 - Jul 23, 08:50 UTCJul 23, 09:45 UTC55m
2026-07-22 UPS5855 SLC → SDF Jul 22, 13:05 UTCJul 22, 15:55 UTC2h 50m
2026-07-22 UPS767 DFW → SDF Jul 22, 02:45 UTCJul 22, 04:25 UTC1h 40m
2026-07-21 UPS5768 - Jul 21, 21:50 UTCJul 21, 23:25 UTC1h 35m
2026-07-21 UPS2971 - Jul 21, 13:20 UTCJul 21, 16:55 UTC3h 35m
2026-07-21 UPS972 ONT → PDX Jul 21, 09:45 UTCJul 21, 11:25 UTC1h 40m
2026-07-21 UPS841 SLC → ONT Jul 21, 02:50 UTCJul 21, 04:05 UTC1h 15m
2026-07-18 UPS5848 SDF → SLC Jul 18, 21:25 UTCJul 19, 00:15 UTC2h 50m
2026-07-18 UPS5855 SLC → SDF Jul 18, 13:10 UTCJul 18, 16:00 UTC2h 50m
2026-07-18 UPS844 - Jul 18, 08:45 UTCJul 18, 11:35 UTC2h 50m
2026-07-18 UPS1337 TPA → SDF Jul 18, 01:34 UTCJul 18, 03:20 UTC1h 46m
2026-07-17 UPS5354 - Jul 17, 20:55 UTCJul 17, 23:05 UTC2h 10m
2026-07-17 UPS5303 - Jul 17, 11:10 UTCJul 17, 12:00 UTC50m
2026-07-17 UPS1302 - Jul 17, 08:00 UTCJul 17, 08:49 UTC50m
2026-07-17 UPS1321 - Jul 17, 01:15 UTCJul 17, 02:34 UTC1h 20m
2026-07-16 UPS5338 - Jul 16, 21:15 UTCJul 16, 22:35 UTC1h 20m
2026-07-16 UPS5345 TPA → SDF Jul 16, 11:20 UTCJul 16, 12:55 UTC1h 35m
2026-07-16 UPS1338 - Jul 16, 08:10 UTCJul 16, 09:45 UTC1h 35m
2026-07-16 UPS1303 ATL → SDF Jul 16, 03:25 UTCJul 16, 04:15 UTC50m
2026-07-15 UPS5306 - Jul 15, 20:40 UTCJul 15, 21:40 UTC1h 0m
2026-07-15 UPS2567 MSP → SDF Jul 15, 12:20 UTCJul 15, 13:40 UTC1h 20m
2026-07-15 UPS560 - Jul 15, 09:00 UTCJul 15, 10:20 UTC1h 20m
2026-07-14 UPS313 GDL → SDF Jul 14, 02:05 UTCJul 14, 05:47 UTC3h 42m
2026-07-13 UPS313 - Jul 13, 08:35 UTCJul 14, 05:40 UTC21h 5m
2026-07-12 UPS5971 PDX → SDF Jul 12, 13:30 UTCJul 12, 17:05 UTC3h 35m
2026-07-11 UPS974 - Jul 11, 09:45 UTCJul 11, 14:05 UTC4h 20m
2026-07-11 UPS1335 - Jul 11, 02:30 UTCJul 11, 04:10 UTC1h 40m
2026-07-10 UPS2344 - Jul 10, 20:35 UTCJul 11, 01:05 UTC4h 30m
2026-07-10 UPS2344 ONT → MCO Jul 10, 20:39 UTCJul 11, 00:50 UTC4h 11m
2026-07-10 UPS7893 ANC → ONT Jul 10, 05:26 UTCJul 10, 10:01 UTC4h 35m
2026-07-10 UPS7893 ANC → ONT Jul 10, 05:30 UTCJul 10, 10:05 UTC4h 35m
2026-07-09 UPS5074 - Jul 9, 19:55 UTCJul 10, 02:10 UTC6h 15m
2026-07-09 UPS2335 - Jul 9, 11:55 UTCJul 9, 13:45 UTC1h 50m
2026-07-09 UPS2335 - Jul 9, 11:53 UTCJul 9, 13:46 UTC1h 53m
2026-07-09 UPS1334 - Jul 9, 08:25 UTCJul 9, 09:45 UTC1h 20m
2026-07-09 UPS1334 - Jul 9, 08:19 UTCJul 9, 10:10 UTC1h 51m
2026-07-09 UPS401 - Jul 9, 01:30 UTCJul 9, 03:25 UTC1h 55m
2026-07-08 UPS5364 - Jul 8, 22:45 UTCJul 9, 00:10 UTC1h 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 N365UP page for operator, model, and routing details .

Mode-S A420AF frequently asked

What is Mode-S code A420AF?
A420AF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N365UP.
Where is Mode-S A420AF registered?
Mode-S code A420AF 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 A420AF broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 15:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A420AF, octal 51020257, decimal 10,756,271.
What flights does A420AF operate?
Mode-S A420AF has broadcast 20 distinct callsigns, including UPS841, UPS5306, UPS2859, UPS1303, UPS858.