Apparatus

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sensors Mode-S transponder

A0E249

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N156UP · AIRBUS A-300-600 · operated by UNITED PARCEL SERVICE CO

Hex
A0E249
Octal
50161111
Decimal
10,543,689
Country
US
Tail
N156UP
Type
A306
No current signal · last broadcast 5h ago
Flights observed
169
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A0E249.

Country allocation

The ICAO 24-bit address A0E249 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
UPS5556 - 6 2026-07-09
UPS2182 United Parcel Service 6 2026-04-24
UPS5541 - 5 2026-07-07
UPS542 - 5 2026-07-07
UPS1081 United Parcel Service 5 2026-04-25
UPS555 - 4 2026-07-10
UPS5383 - 4 2026-06-23
UPS5031 United Parcel Service 4 2026-06-25
UPS1482 United Parcel Service 4 2026-04-29
UPS1384 - 4 2026-06-23
UPS712 - 3 2026-07-03
UPS5152 - 3 2026-06-26
UPS1151 - 3 2026-06-27
UPS1070 - 3 2026-06-24
UPS1058 United Parcel Service 3 2026-04-28
UPS9715 - 2 2026-07-01
UPS9503 United Parcel Service 2 2026-04-29
UPS9502 - 2 2026-06-17
UPS9308 United Parcel Service 2 2026-06-30
UPS9305 United Parcel Service 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UPS1376 - Jul 14, 09:15 UTCJul 14, 09:50 UTC35m
2026-07-14 UPS1376 SDF → TYS Jul 14, 09:14 UTCJul 14, 09:48 UTC34m
2026-07-14 UPS907 BUR → SDF Jul 14, 02:25 UTCJul 14, 06:10 UTC3h 45m
2026-07-14 UPS907 BUR → SDF Jul 14, 02:26 UTCJul 14, 06:07 UTC3h 41m
2026-07-13 UPS914 - Jul 13, 07:35 UTCJul 13, 11:10 UTC3h 35m
2026-07-12 UPS5683 - Jul 12, 12:50 UTCJul 12, 14:15 UTC1h 25m
2026-07-11 UPS5684 - Jul 11, 21:40 UTCJul 11, 23:00 UTC1h 20m
2026-07-11 UPS5779 - Jul 11, 13:05 UTCJul 11, 14:50 UTC1h 45m
2026-07-10 UPS778 - Jul 10, 08:30 UTCJul 10, 10:30 UTC2h 0m
2026-07-10 UPS778 RFD → IAH Jul 10, 08:33 UTCJul 10, 10:32 UTC1h 59m
2026-07-10 UPS555 - Jul 10, 02:50 UTCJul 10, 03:30 UTC40m
2026-07-10 UPS555 MSP → RFD Jul 10, 02:49 UTCJul 10, 03:36 UTC47m
2026-07-09 UPS5556 - Jul 9, 20:50 UTCJul 9, 21:45 UTC55m
2026-07-09 UPS5556 - Jul 9, 18:05 UTCJul 9, 18:55 UTC50m
2026-07-09 UPS5775 - Jul 9, 14:05 UTCJul 9, 14:15 UTC10m
2026-07-09 UPS5775 DFW → SDF Jul 9, 14:00 UTCJul 9, 15:39 UTC1h 39m
2026-07-09 UPS754 - Jul 9, 08:35 UTCJul 9, 10:15 UTC1h 40m
2026-07-09 UPS754 RFD → DFW Jul 9, 08:31 UTCJul 9, 10:08 UTC1h 37m
2026-07-09 UPS909 - Jul 9, 02:40 UTCJul 9, 06:05 UTC3h 25m
2026-07-09 UPS909 LGB → RFD Jul 9, 02:39 UTCJul 9, 06:06 UTC3h 27m
2026-07-08 UPS5904 - Jul 8, 20:10 UTCJul 8, 23:45 UTC3h 35m
2026-07-08 UPS5904 RFD → LGB Jul 8, 20:08 UTCJul 8, 23:29 UTC3h 21m
2026-07-08 UPS2651 - Jul 8, 13:00 UTCJul 8, 15:45 UTC2h 45m
2026-07-08 UPS2651 PHX → RFD Jul 8, 12:56 UTCJul 8, 15:40 UTC2h 44m
2026-07-08 UPS856 - Jul 8, 07:45 UTCJul 8, 10:30 UTC2h 45m
2026-07-08 UPS856 RFD → PHX Jul 8, 07:46 UTCJul 8, 10:29 UTC2h 43m
2026-07-08 UPS555 - Jul 8, 02:55 UTCJul 8, 03:30 UTC35m
2026-07-07 UPS5556 - Jul 7, 21:10 UTCJul 7, 22:00 UTC50m
2026-07-07 UPS5556 - Jul 7, 18:55 UTCJul 7, 19:35 UTC40m
2026-07-07 UPS5541 - Jul 7, 12:50 UTCJul 7, 13:45 UTC55m
2026-07-07 UPS5541 MKE → SDF Jul 7, 12:47 UTCJul 7, 13:42 UTC55m
2026-07-07 UPS542 - Jul 7, 09:30 UTCJul 7, 10:25 UTC55m
2026-07-07 UPS542 SDF → MKE Jul 7, 09:35 UTCJul 7, 10:24 UTC49m
2026-07-07 UPS605 - Jul 7, 04:00 UTCJul 7, 04:50 UTC50m
2026-07-07 UPS605 ORD → SDF Jul 7, 03:50 UTCJul 7, 04:43 UTC53m
2026-07-05 UPS5606 - Jul 5, 21:25 UTCJul 5, 22:20 UTC55m
2026-07-05 UPS5785 DFW → SDF Jul 5, 12:11 UTCJul 5, 13:43 UTC1h 32m
2026-07-05 UPS5785 - Jul 5, 12:05 UTCJul 5, 13:45 UTC1h 40m
2026-07-04 UPS711 - Jul 4, 07:15 UTCJul 4, 07:40 UTC25m
2026-07-04 UPS711 SHV → DFW Jul 4, 07:06 UTCJul 4, 07:38 UTC32m
2026-07-03 UPS712 - Jul 3, 10:45 UTCJul 3, 11:05 UTC20m
2026-07-03 UPS712 LIT → SHV Jul 3, 10:42 UTCJul 3, 11:12 UTC30m
2026-07-03 UPS712 - Jul 3, 08:55 UTCJul 3, 09:50 UTC55m
2026-07-03 UPS7831 - Jul 3, 06:10 UTCJul 3, 07:00 UTC50m
2026-07-03 UPS7831 RFD → SDF Jul 3, 06:11 UTCJul 3, 07:17 UTC1h 6m
2026-07-03 UPS555 - Jul 3, 02:55 UTCJul 3, 03:35 UTC40m
2026-07-02 UPS5556 - Jul 2, 20:35 UTCJul 2, 21:35 UTC1h 0m
2026-07-02 UPS5556 - Jul 2, 18:10 UTCJul 2, 19:00 UTC50m
2026-07-02 UPS5683 OMA → SDF Jul 2, 12:42 UTCJul 2, 14:03 UTC1h 21m
2026-07-02 UPS684 - Jul 2, 08:30 UTCJul 2, 09:50 UTC1h 20m

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 N156UP page for operator, model, and routing details .

Mode-S A0E249 frequently asked

What is Mode-S code A0E249?
A0E249 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N156UP.
Where is Mode-S A0E249 registered?
Mode-S code A0E249 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 A0E249 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0E249, octal 50161111, decimal 10,543,689.
What flights does A0E249 operate?
Mode-S A0E249 has broadcast 20 distinct callsigns, including UPS5556, UPS2182, UPS5541, UPS542, UPS1081.