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
Broadcasting now · callsign UPS138 · 12,825 ft
Flights observed
346
Distinct callsigns
20
Country
US
Last broadcast
7h ago

Current position

A3577D is currently broadcasting. Map zoomed to live position.

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
UPS166 - 33 2026-07-09
UPS137 - 25 2026-07-13
UPS138 - 15 2026-07-13
UPS126 - 12 2026-07-02
UPS104 - 12 2026-06-29
UPS920 United Parcel Service 11 2026-04-16
UPS2463 United Parcel Service 10 2026-06-26
UPS127 - 10 2026-07-01
UPS2462 - 9 2026-06-26
UPS118 United Parcel Service 9 2026-06-08
UPS196 - 8 2026-07-07
UPS146 United Parcel Service 8 2026-04-30
UPS136 United Parcel Service 8 2026-06-04
UPS124 - 7 2026-07-02
UPS119 United Parcel Service 7 2026-06-07
UPS5933 - 6 2026-04-16
UPS195 - 6 2026-07-08
UPS145 - 6 2026-05-01
UPS125 - 6 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UPS138 - Jul 13, 20:05 UTCJul 13, 22:00 UTC1h 55m
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
2026-07-11 UPS137 - Jul 11, 19:15 UTCJul 11, 19:35 UTC20m
2026-07-11 UPS137 - Jul 11, 17:45 UTCJul 11, 18:15 UTC30m
2026-07-10 UPS138 - Jul 10, 20:50 UTCJul 10, 22:30 UTC1h 40m
2026-07-10 UPS137 - Jul 10, 17:20 UTCJul 10, 17:35 UTC15m
2026-07-10 UPS137 - Jul 10, 15:45 UTCJul 10, 16:15 UTC30m
2026-07-09 UPS138 - Jul 9, 20:20 UTCJul 9, 21:50 UTC1h 30m
2026-07-09 UPS166 - Jul 9, 17:45 UTCJul 9, 17:55 UTC10m
2026-07-09 UPS166 - Jul 9, 14:15 UTCJul 9, 14:40 UTC25m
2026-07-09 UPS166 - Jul 9, 08:35 UTCJul 9, 11:55 UTC3h 20m
2026-07-09 UPS167 - Jul 9, 04:40 UTCJul 9, 05:05 UTC25m
2026-07-09 UPS167 - Jul 9, 01:20 UTCJul 9, 01:50 UTC30m
2026-07-08 UPS167 - Jul 8, 22:55 UTCJul 8, 23:25 UTC30m
2026-07-08 UPS167 - Jul 8, 20:05 UTCJul 8, 20:15 UTC10m
2026-07-08 UPS195 - Jul 8, 16:10 UTCJul 8, 16:25 UTC15m
2026-07-08 UPS195 - Jul 8, 13:15 UTCJul 8, 13:55 UTC40m
2026-07-07 UPS196 - Jul 7, 22:40 UTCJul 7, 23:15 UTC35m
2026-07-07 UPS196 - Jul 7, 20:25 UTCJul 7, 20:35 UTC10m
2026-07-07 UPS166 HKG → SIN Jul 7, 17:35 UTCJul 7, 17:50 UTC15m
2026-07-07 UPS166 HKG → SIN Jul 7, 14:15 UTCJul 7, 14:40 UTC25m
2026-07-07 UPS166 HKG → SIN Jul 7, 08:30 UTCJul 7, 11:45 UTC3h 15m
2026-07-07 UPS167 - Jul 7, 04:05 UTCJul 7, 04:30 UTC25m
2026-07-07 UPS167 - Jul 7, 01:00 UTCJul 7, 01:20 UTC20m
2026-07-06 UPS167 - Jul 6, 22:45 UTCJul 6, 23:15 UTC30m
2026-07-06 UPS167 - Jul 6, 20:00 UTCJul 6, 20:10 UTC10m
2026-07-06 UPS195 - Jul 6, 13:15 UTCJul 6, 13:55 UTC40m
2026-07-05 UPS196 - Jul 5, 03:30 UTCJul 5, 04:10 UTC40m
2026-07-05 UPS196 - Jul 5, 01:15 UTCJul 5, 01:25 UTC10m
2026-07-04 UPS152 - Jul 4, 18:20 UTCJul 4, 18:35 UTC15m
2026-07-04 UPS152 - Jul 4, 09:25 UTCJul 4, 17:15 UTC7h 50m
2026-07-03 UPS151 - Jul 3, 21:10 UTCJul 4, 05:50 UTC8h 40m
2026-07-03 UPS166 HKG → SIN Jul 3, 18:45 UTCJul 3, 19:05 UTC20m
2026-07-03 UPS166 HKG → SIN Jul 3, 15:30 UTCJul 3, 15:55 UTC25m
2026-07-03 UPS169 - Jul 3, 10:45 UTCJul 3, 13:55 UTC3h 10m
2026-07-03 UPS167 - Jul 3, 04:30 UTCJul 3, 05:05 UTC35m
2026-07-03 UPS167 - Jul 3, 01:10 UTCJul 3, 01:45 UTC35m
2026-07-02 UPS167 - Jul 2, 22:30 UTCJul 2, 22:55 UTC25m
2026-07-02 UPS167 - Jul 2, 19:40 UTCJul 2, 19:50 UTC10m
2026-07-02 UPS126 - Jul 2, 17:00 UTCJul 2, 17:15 UTC15m
2026-07-02 UPS126 - Jul 2, 13:50 UTCJul 2, 14:45 UTC55m
2026-07-02 UPS125 - Jul 2, 11:25 UTCJul 2, 12:05 UTC40m
2026-07-02 UPS124 - Jul 2, 01:45 UTCJul 2, 02:20 UTC35m
2026-07-01 UPS127 - Jul 1, 21:20 UTCJul 2, 00:30 UTC3h 10m
2026-07-01 UPS166 HKG → SIN Jul 1, 18:55 UTCJul 1, 19:15 UTC20m
2026-07-01 UPS166 HKG → SIN Jul 1, 15:40 UTCJul 1, 16:05 UTC25m
2026-07-01 UPS166 HKG → SIN Jul 1, 08:30 UTCJul 1, 11:40 UTC3h 10m

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?
Yes. Mode-S A3577D is currently airborne.
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, UPS166, UPS137, UPS138, UPS126.