Apparatus

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sensors Mode-S transponder

A3577D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N314UP · BOEING 767-300 · operated by C C & E I LLC

Hex
A3577D
Octal
50653575
Decimal
10,704,765
Country
US
Tail
N314UP
Type
B763
No current signal · last broadcast Jul 26, 19:55 UTC
Flights observed
391
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:55 UTC

Last known position

Most recent position reported by Mode-S A3577D.

Country allocation

The ICAO 24-bit address A3577D 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 - 41 2026-07-09
UPS137 - 34 2026-07-21
UPS166 - 33 2026-07-09
UPS138 United Parcel Service 24 2026-07-24
UPS126 United Parcel Service 16 2026-07-22
UPS127 - 14 2026-07-21
UPS118 United Parcel Service 13 2026-07-24
UPS104 - 12 2026-06-29
UPS920 United Parcel Service 11 2026-04-16
UPS136 - 11 2026-07-21
UPS119 United Parcel Service 11 2026-07-23
UPS2463 United Parcel Service 10 2026-06-26
UPS2462 - 9 2026-06-26
UPS124 - 9 2026-07-22
UPS196 - 8 2026-07-07
UPS146 United Parcel Service 8 2026-04-30
UPS125 - 8 2026-07-22
UPS5933 - 6 2026-04-16
UPS195 - 6 2026-07-08
UPS145 - 6 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS139 SYD → CRK Jul 26, 11:30 UTCJul 26, 19:55 UTC8h 25m
2026-07-26 UPS134 CRK → SYD Jul 26, 01:20 UTCJul 26, 08:55 UTC7h 36m
2026-07-24 UPS138 SZX → SYD Jul 24, 21:20 UTCJul 24, 21:50 UTC30m
2026-07-24 UPS138 SZX → SYD Jul 24, 20:05 UTCJul 24, 20:30 UTC25m
2026-07-24 UPS118 NRT → SZX Jul 24, 17:20 UTCJul 24, 17:50 UTC30m
2026-07-24 UPS118 NRT → SZX Jul 24, 13:50 UTCJul 24, 15:25 UTC1h 35m
2026-07-23 UPS119 SZX → NRT Jul 23, 21:25 UTCJul 23, 23:10 UTC1h 45m
2026-07-23 UPS119 SZX → NRT Jul 23, 19:20 UTCJul 23, 19:30 UTC10m
2026-07-23 UPS118 NRT → SZX Jul 23, 16:50 UTCJul 23, 17:10 UTC20m
2026-07-23 UPS118 NRT → SZX Jul 23, 13:05 UTCJul 23, 14:40 UTC1h 35m
2026-07-22 UPS119 SZX → NRT Jul 22, 21:55 UTCJul 22, 23:30 UTC1h 35m
2026-07-22 UPS119 SZX → NRT Jul 22, 19:45 UTCJul 22, 19:55 UTC10m
2026-07-22 UPS126 RFD → JFK Jul 22, 16:45 UTCJul 22, 17:05 UTC20m
2026-07-22 UPS126 RFD → JFK Jul 22, 13:40 UTCJul 22, 14:40 UTC1h 0m
2026-07-22 UPS125 - Jul 22, 11:35 UTCJul 22, 12:05 UTC30m
2026-07-22 UPS124 - Jul 22, 01:45 UTCJul 22, 02:15 UTC30m
2026-07-21 UPS127 - Jul 21, 23:30 UTCJul 22, 00:35 UTC1h 5m
2026-07-21 UPS127 - Jul 21, 21:20 UTCJul 21, 21:30 UTC10m
2026-07-21 UPS137 - Jul 21, 16:25 UTCJul 21, 16:55 UTC30m
2026-07-21 UPS136 SYD → CRK Jul 21, 06:30 UTCJul 21, 14:30 UTC8h 0m
2026-07-20 UPS138 SZX → SYD Jul 20, 21:30 UTCJul 21, 05:00 UTC7h 29m
2026-07-20 UPS138 SZX → SYD Jul 20, 20:10 UTCJul 20, 20:40 UTC30m
2026-07-20 UPS137 - Jul 20, 17:35 UTCJul 20, 17:55 UTC20m
2026-07-20 UPS137 - Jul 20, 15:55 UTCJul 20, 16:30 UTC35m
2026-07-19 UPS139 SYD → CRK Jul 19, 11:40 UTCJul 19, 19:20 UTC7h 40m
2026-07-19 UPS134 CRK → SYD Jul 19, 01:35 UTCJul 19, 09:10 UTC7h 35m
2026-07-18 UPS138 SZX → SYD Jul 18, 21:55 UTCJul 18, 23:35 UTC1h 40m
2026-07-17 UPS137 - Jul 17, 18:15 UTCJul 17, 18:29 UTC15m
2026-07-17 UPS137 - Jul 17, 16:40 UTCJul 17, 17:09 UTC30m
2026-07-17 UPS138 - Jul 17, 02:59 UTCJul 17, 03:20 UTC20m
2026-07-17 UPS138 - Jul 17, 01:45 UTCJul 17, 02:15 UTC30m
2026-07-16 UPS137 - Jul 16, 21:50 UTCJul 16, 22:05 UTC15m
2026-07-16 UPS137 - Jul 16, 20:15 UTCJul 16, 20:39 UTC25m
2026-07-16 UPS136 - Jul 16, 10:20 UTCJul 16, 17:49 UTC7h 30m
2026-07-15 UPS138 - Jul 15, 23:30 UTCJul 16, 07:20 UTC7h 50m
2026-07-15 UPS138 - Jul 15, 22:15 UTCJul 15, 22:40 UTC25m
2026-07-15 UPS126 - Jul 15, 16:55 UTCJul 15, 17:10 UTC15m
2026-07-15 UPS126 - Jul 15, 13:45 UTCJul 15, 14:45 UTC1h 0m
2026-07-15 UPS125 - Jul 15, 11:20 UTCJul 15, 12:00 UTC40m
2026-07-15 UPS124 - Jul 15, 01:15 UTCJul 15, 01:45 UTC30m
2026-07-14 UPS127 - Jul 14, 22:50 UTCJul 14, 23:45 UTC55m
2026-07-14 UPS127 - Jul 14, 20:40 UTCJul 14, 20:55 UTC15m
2026-07-14 UPS137 - Jul 14, 18:20 UTCJul 14, 18:40 UTC20m
2026-07-14 UPS137 - Jul 14, 16:45 UTCJul 14, 17:15 UTC30m
2026-07-14 UPS136 - Jul 14, 07:15 UTCJul 14, 15:00 UTC7h 45m
2026-07-13 UPS138 SZX → SYD Jul 13, 20:05 UTCJul 14, 05:15 UTC9h 10m
2026-07-13 UPS137 - Jul 13, 15:40 UTCJul 13, 16:15 UTC35m
2026-07-12 UPS139 - Jul 12, 11:35 UTCJul 12, 19:30 UTC7h 55m
2026-07-12 UPS134 - Jul 12, 01:45 UTCJul 12, 09:45 UTC8h 0m
2026-07-11 UPS138 - Jul 11, 21:55 UTCJul 11, 23:35 UTC1h 40m

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 N314UP page for operator, model, and routing details .

Mode-S A3577D frequently asked

What is Mode-S code A3577D?
A3577D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N314UP.
Where is Mode-S A3577D registered?
Mode-S code A3577D 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 A3577D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3577D, octal 50653575, decimal 10,704,765.
What flights does A3577D operate?
Mode-S A3577D has broadcast 20 distinct callsigns, including UPS167, UPS137, UPS166, UPS138, UPS126.