Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A708B0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N552UW · AIRBUS A-321 · operated by UMB BANK NA TRUSTEE

Hex
A708B0
Octal
51604260
Decimal
10,946,736
Country
US
Tail
N552UW
Type
A321
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
431
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A708B0.

Country allocation

The ICAO 24-bit address A708B0 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
AAL1552 - 8 2026-07-06
AAL2279 - 6 2026-06-23
AAL903 American Airlines 5 2026-06-05
AAL3001 - 5 2026-07-10
AAL2242 - 5 2026-07-12
AAL2100 - 5 2026-06-30
AAL1849 American Airlines 5 2026-07-23
AAL3233 American Airlines 4 2026-04-27
AAL3156 - 4 2026-07-19
AAL2836 - 4 2026-07-20
AAL2784 - 4 2026-06-17
AAL2529 - 4 2026-06-25
AAL2251 - 4 2026-07-12
AAL2218 American Airlines 4 2026-04-29
AAL2097 - 4 2026-07-21
AAL1847 - 4 2026-06-22
AAL1834 American Airlines 4 2026-07-18
AAL1768 - 4 2026-07-15
AAL1399 - 4 2026-07-21
AAL1312 - 4 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1973 DFW → SFO Jul 26, 19:10 UTCJul 26, 22:00 UTC2h 50m
2026-07-26 AAL1973 DFW → SFO Jul 26, 14:20 UTCJul 26, 17:45 UTC3h 25m
2026-07-26 AAL1670 PHL → DFW Jul 26, 09:15 UTCJul 26, 12:05 UTC2h 50m
2026-07-25 AAL991 MIA → CNF Jul 25, 23:00 UTCJul 26, 01:50 UTC2h 50m
2026-07-25 AAL2762 ORD → MBJ Jul 25, 19:10 UTCJul 25, 21:35 UTC2h 25m
2026-07-25 AAL2762 ORD → MBJ Jul 25, 14:45 UTCJul 25, 17:05 UTC2h 20m
2026-07-25 AAL760 PHL → ATL Jul 25, 10:35 UTCJul 25, 12:25 UTC1h 50m
2026-07-25 AAL760 PHL → ATL Jul 25, 10:31 UTCJul 25, 12:19 UTC1h 48m
2026-07-25 AAL1881 MCO → PHL Jul 25, 01:15 UTCJul 25, 04:00 UTC2h 45m
2026-07-25 AAL1881 MCO → PHL Jul 25, 01:14 UTCJul 25, 03:54 UTC2h 40m
2026-07-24 AAL3117 CLT → CMH Jul 24, 21:20 UTCJul 24, 23:50 UTC2h 30m
2026-07-24 AAL3081 ELP → DFW Jul 24, 17:20 UTCJul 24, 19:50 UTC2h 30m
2026-07-24 AAL2206 DFW → MIA Jul 24, 00:45 UTCJul 24, 03:10 UTC2h 25m
2026-07-23 AAL1849 PDX → CLT Jul 23, 20:10 UTCJul 23, 23:05 UTC2h 55m
2026-07-23 AAL1849 PDX → CLT Jul 23, 15:20 UTCJul 23, 18:30 UTC3h 10m
2026-07-23 AAL2272 OKC → DFW Jul 23, 11:10 UTCJul 23, 11:45 UTC35m
2026-07-23 AAL2734 PHL → TPA Jul 23, 05:55 UTCJul 23, 06:25 UTC30m
2026-07-23 AAL1415 YVR → DFW Jul 23, 00:45 UTCJul 23, 04:20 UTC3h 35m
2026-07-22 AAL1415 YVR → DFW Jul 22, 13:40 UTCJul 22, 17:20 UTC3h 40m
2026-07-22 AAL2605 RDU → DFW Jul 22, 11:10 UTCJul 22, 11:55 UTC45m
2026-07-22 AAL542 DFW → RDU Jul 22, 02:10 UTCJul 22, 04:35 UTC2h 25m
2026-07-21 AAL2097 MCO → DFW Jul 21, 21:50 UTCJul 22, 00:00 UTC2h 10m
2026-07-21 AAL2097 DFW → MCO Jul 21, 18:10 UTCJul 21, 20:30 UTC2h 20m
2026-07-21 AAL2811 - Jul 21, 14:05 UTCJul 21, 16:45 UTC2h 40m
2026-07-21 AAL1399 - Jul 21, 03:20 UTCJul 21, 04:00 UTC40m
2026-07-21 AAL1399 LAS → LAX Jul 21, 03:15 UTCJul 21, 03:55 UTC40m
2026-07-20 AAL1031 - Jul 20, 21:50 UTCJul 21, 01:45 UTC3h 54m
2026-07-20 AAL2836 - Jul 20, 18:50 UTCJul 20, 20:10 UTC1h 20m
2026-07-20 AAL2836 TPA → CLT Jul 20, 18:48 UTCJul 20, 20:10 UTC1h 22m
2026-07-20 AAL2836 - Jul 20, 15:45 UTCJul 20, 17:30 UTC1h 45m
2026-07-20 AAL1235 MIA → BOS Jul 20, 12:45 UTCJul 20, 14:05 UTC1h 20m
2026-07-20 AAL1235 MIA → BOS Jul 20, 12:38 UTCJul 20, 14:05 UTC1h 27m
2026-07-20 AAL1976 - Jul 20, 01:10 UTCJul 20, 02:30 UTC1h 20m
2026-07-19 AAL2082 - Jul 19, 22:15 UTCJul 19, 23:35 UTC1h 20m
2026-07-19 AAL2082 - Jul 19, 19:35 UTCJul 19, 20:40 UTC1h 5m
2026-07-19 AAL2487 - Jul 19, 15:05 UTCJul 19, 17:25 UTC2h 20m
2026-07-19 AAL2487 - Jul 19, 11:25 UTCJul 19, 13:40 UTC2h 15m
2026-07-19 AAL3156 - Jul 19, 06:45 UTCJul 19, 09:25 UTC2h 40m
2026-07-19 AAL3156 - Jul 19, 02:55 UTCJul 19, 05:40 UTC2h 45m
2026-07-18 AAL1067 - Jul 18, 20:50 UTCJul 18, 23:55 UTC3h 5m
2026-07-18 AAL1067 UVF → CLT Jul 18, 20:00 UTCJul 18, 23:59 UTC3h 59m
2026-07-18 AAL823 UVF → CLT Jul 18, 14:35 UTCJul 18, 17:50 UTC3h 15m
2026-07-18 AAL823 UVF → CLT Jul 18, 14:33 UTCJul 18, 18:36 UTC4h 3m
2026-07-18 AAL1834 IND → PHL Jul 18, 10:40 UTCJul 18, 11:30 UTC50m
2026-07-18 AAL2263 CLT → ALB Jul 18, 05:45 UTCJul 18, 07:50 UTC2h 5m
2026-07-18 AAL2263 CLT → ALB Jul 18, 05:42 UTCJul 18, 07:46 UTC2h 4m
2026-07-18 AAL2143 MCO → DFW Jul 18, 02:02 UTCJul 18, 04:19 UTC2h 17m
2026-07-18 AAL2143 MCO → DFW Jul 18, 02:05 UTCJul 18, 04:25 UTC2h 21m
2026-07-17 AAL3271 - Jul 17, 22:45 UTCJul 18, 00:00 UTC1h 15m
2026-07-17 AAL1886 - Jul 17, 14:39 UTCJul 17, 16:49 UTC2h 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 N552UW page for operator, model, and routing details .

Mode-S A708B0 frequently asked

What is Mode-S code A708B0?
A708B0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N552UW.
Where is Mode-S A708B0 registered?
Mode-S code A708B0 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 A708B0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A708B0, octal 51604260, decimal 10,946,736.
What flights does A708B0 operate?
Mode-S A708B0 has broadcast 20 distinct callsigns, including AAL1552, AAL2279, AAL903, AAL3001, AAL2242.