Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 4h ago
Flights observed
192
Distinct callsigns
20
Country
US
Last broadcast
4h ago

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 United Parcel Service 19 2026-05-29
UPS137 - 16 2026-05-27
UPS166 United Parcel Service 15 2026-05-29
UPS920 United Parcel Service 11 2026-04-16
UPS138 United Parcel Service 9 2026-05-26
UPS146 United Parcel Service 8 2026-04-30
UPS5933 - 6 2026-04-16
UPS145 - 6 2026-05-01
UPS136 United Parcel Service 6 2026-05-27
UPS127 United Parcel Service 6 2026-05-29
UPS126 United Parcel Service 6 2026-05-19
UPS104 United Parcel Service 6 2026-05-18
UPS26 United Parcel Service 5 2026-05-09
UPS31 United Parcel Service 4 2026-05-10
UPS196 - 4 2026-05-08
UPS119 United Parcel Service 4 2026-05-27
UPS1189 United Parcel Service 4 2026-04-17
UPS238 United Parcel Service 3 2026-05-14
UPS233 United Parcel Service 3 2026-05-11
UPS195 - 3 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 UPS127 SZX → KIX May 29, 22:40 UTCMay 29, 23:25 UTC45m
2026-05-29 UPS127 SZX → KIX May 29, 20:15 UTCMay 29, 20:25 UTC10m
2026-05-29 UPS166 HKG → SIN May 29, 17:20 UTCMay 29, 17:40 UTC20m
2026-05-29 UPS166 HKG → SIN May 29, 14:15 UTCMay 29, 14:35 UTC20m
2026-05-29 UPS169 HKG → HKG May 29, 08:45 UTCMay 29, 11:45 UTC3h 0m
2026-05-29 UPS167 SIN → SZX May 29, 04:00 UTCMay 29, 04:20 UTC20m
2026-05-29 UPS167 SIN → SZX May 29, 00:50 UTCMay 29, 01:10 UTC20m
2026-05-28 UPS118 NRT → SZX May 28, 13:00 UTCMay 28, 14:30 UTC1h 30m
2026-05-27 UPS119 SZX → NRT May 27, 23:45 UTCMay 28, 01:10 UTC1h 25m
2026-05-27 UPS119 SZX → NRT May 27, 21:25 UTCMay 27, 21:35 UTC10m
2026-05-27 UPS137 - May 27, 18:45 UTCMay 27, 19:00 UTC15m
2026-05-27 UPS137 - May 27, 17:10 UTCMay 27, 18:05 UTC55m
2026-05-27 UPS136 SYD → CRK May 27, 08:10 UTCMay 27, 15:50 UTC7h 40m
2026-05-26 UPS138 SZX → SYD May 26, 20:54 UTCMay 27, 05:45 UTC8h 50m
2026-05-26 UPS137 - May 26, 17:04 UTCMay 26, 17:25 UTC20m
2026-05-26 UPS137 - May 26, 15:35 UTCMay 26, 16:05 UTC30m
2026-05-26 UPS136 SYD → CRK May 26, 06:04 UTCMay 26, 14:05 UTC8h 0m
2026-05-25 UPS138 SZX → SYD May 25, 20:09 UTCMay 26, 04:30 UTC8h 20m
2026-05-25 UPS166 HKG → SIN May 25, 17:25 UTCMay 25, 17:40 UTC15m
2026-05-25 UPS166 HKG → SIN May 25, 14:20 UTCMay 25, 14:35 UTC15m
2026-05-24 UPS169 HKG → HKG May 24, 18:40 UTCMay 24, 21:40 UTC3h 0m
2026-05-24 UPS168 - May 24, 16:20 UTCMay 24, 16:40 UTC20m
2026-05-24 UPS168 - May 24, 08:35 UTCMay 24, 09:05 UTC30m
2026-05-24 UPS167 SIN → SZX May 24, 00:50 UTCMay 24, 01:20 UTC30m
2026-05-23 UPS167 SIN → SZX May 23, 22:00 UTCMay 23, 22:10 UTC10m
2026-05-22 UPS137 - May 22, 20:25 UTCMay 22, 22:30 UTC2h 5m
2026-05-21 UPS138 SZX → SYD May 21, 22:35 UTCMay 22, 00:40 UTC2h 5m
2026-05-21 UPS137 - May 21, 17:35 UTCMay 21, 19:20 UTC1h 45m
2026-05-21 UPS136 SYD → CRK May 21, 08:15 UTCMay 21, 16:10 UTC7h 55m
2026-05-20 UPS138 SZX → SYD May 20, 21:15 UTCMay 21, 06:00 UTC8h 45m
2026-05-20 UPS166 HKG → SIN May 20, 17:35 UTCMay 20, 17:55 UTC20m
2026-05-20 UPS166 HKG → SIN May 20, 14:25 UTCMay 20, 14:40 UTC15m
2026-05-20 UPS166 HKG → SIN May 20, 08:35 UTCMay 20, 11:50 UTC3h 15m
2026-05-20 UPS167 SIN → SZX May 20, 04:10 UTCMay 20, 04:30 UTC20m
2026-05-20 UPS167 SIN → SZX May 20, 01:00 UTCMay 20, 01:20 UTC20m
2026-05-19 UPS167 SIN → SZX May 19, 22:35 UTCMay 19, 23:05 UTC30m
2026-05-19 UPS167 SIN → SZX May 19, 19:40 UTCMay 19, 19:50 UTC10m
2026-05-19 UPS126 RFD → JFK May 19, 17:10 UTCMay 19, 17:20 UTC10m
2026-05-19 UPS126 RFD → JFK May 19, 13:45 UTCMay 19, 14:30 UTC45m
2026-05-19 UPS125 - May 19, 11:25 UTCMay 19, 12:15 UTC50m
2026-05-19 UPS124 KIX → KKJ May 19, 00:25 UTCMay 19, 00:55 UTC30m
2026-05-18 UPS104 RFD → KIX May 18, 13:55 UTCMay 18, 21:40 UTC7h 44m
2026-05-18 UPS104 RFD → KIX May 18, 02:30 UTCMay 18, 05:35 UTC3h 5m
2026-05-17 UPS5982 GEG → BFI May 17, 20:20 UTCMay 18, 00:20 UTC4h 0m
2026-05-17 UPS5445 CLE → SDF May 17, 12:01 UTCMay 17, 12:45 UTC45m
2026-05-16 UPS1442 SDF → CLE May 16, 09:35 UTCMay 16, 10:25 UTC50m
2026-05-16 UPS1063 BDL → SDF May 16, 02:15 UTCMay 16, 04:00 UTC1h 45m
2026-05-16 UPS1063 BDL → SDF May 16, 02:11 UTCMay 16, 04:02 UTC1h 51m
2026-05-15 UPS5066 SDF → BDL May 15, 20:55 UTCMay 15, 22:45 UTC1h 50m
2026-05-15 UPS5066 SDF → BDL May 15, 20:47 UTCMay 15, 22:41 UTC1h 54m

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 4h ago.
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, UPS920, UPS138.