Apparatus

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sensors Mode-S transponder

A9819B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N711UW · AIRBUS A-319 · operated by BANK OF UTAH TRUSTEE

Hex
A9819B
Octal
52300633
Decimal
11,108,763
Country
US
Tail
N711UW
Type
A319
Transponder active on ground
Flights observed
551
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A9819B.

Country allocation

The ICAO 24-bit address A9819B 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
AAL2720 American Airlines 10 2026-07-02
AAL3270 - 9 2026-07-02
AAL1927 - 9 2026-07-04
AAL712 American Airlines 8 2026-04-30
AAL2354 - 8 2026-07-06
AAL2157 - 8 2026-06-17
AAL2983 - 6 2026-07-02
AAL1957 - 6 2026-06-23
AAL1605 - 6 2026-07-08
AAL1590 - 6 2026-07-02
AAL3041 - 5 2026-06-26
AAL2700 - 5 2026-07-03
AAL2631 American Airlines 5 2026-06-03
AAL2392 American Airlines 5 2026-05-14
AAL2223 - 5 2026-07-11
AAL2097 American Airlines 5 2026-05-16
AAL2065 - 5 2026-07-05
AAL1921 American Airlines 5 2026-06-13
AAL1501 - 5 2026-07-12
AAL1440 American Airlines 5 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AAL3071 - Jul 13, 18:15 UTCJul 13, 23:15 UTC5h 0m
2026-07-13 AAL1901 - Jul 13, 13:00 UTCJul 13, 16:55 UTC3h 55m
2026-07-13 AAL2730 - Jul 13, 10:15 UTCJul 13, 11:55 UTC1h 40m
2026-07-13 AAL2716 - Jul 13, 02:10 UTCJul 13, 03:55 UTC1h 45m
2026-07-13 AAL2716 MIA → TYS Jul 13, 02:10 UTCJul 13, 03:54 UTC1h 44m
2026-07-12 AAL1501 BNA → MIA Jul 12, 23:00 UTCJul 13, 00:55 UTC1h 55m
2026-07-12 AAL1501 - Jul 12, 19:50 UTCJul 12, 21:50 UTC2h 0m
2026-07-12 AAL2249 - Jul 12, 18:10 UTCJul 12, 18:35 UTC25m
2026-07-12 AAL2249 - Jul 12, 16:05 UTCJul 12, 16:25 UTC20m
2026-07-11 AAL414 - Jul 11, 22:50 UTCJul 12, 13:55 UTC15h 5m
2026-07-11 AAL1457 - Jul 11, 14:25 UTCJul 11, 19:10 UTC4h 45m
2026-07-11 AAL2859 - Jul 11, 10:20 UTCJul 11, 12:55 UTC2h 35m
2026-07-11 AAL2223 - Jul 11, 00:55 UTCJul 11, 03:30 UTC2h 35m
2026-07-11 AAL2223 MIA → GRR Jul 11, 00:54 UTCJul 11, 03:33 UTC2h 39m
2026-07-10 AAL1219 - Jul 10, 23:00 UTCJul 10, 23:30 UTC30m
2026-07-10 AAL1219 - Jul 10, 21:00 UTCJul 10, 21:15 UTC15m
2026-07-10 AAL620 - Jul 10, 17:20 UTCJul 10, 19:40 UTC2h 20m
2026-07-10 AAL620 AUS → MIA Jul 10, 17:19 UTCJul 10, 19:35 UTC2h 16m
2026-07-10 AAL620 - Jul 10, 13:35 UTCJul 10, 16:00 UTC2h 25m
2026-07-10 AAL1740 - Jul 10, 11:05 UTCJul 10, 11:40 UTC35m
2026-07-10 AAL3188 CLT → ORD Jul 10, 02:25 UTCJul 10, 03:05 UTC40m
2026-07-09 AAL1501 - Jul 9, 22:50 UTCJul 10, 00:45 UTC1h 55m
2026-07-09 AAL1501 BNA → MIA Jul 9, 22:48 UTCJul 10, 00:39 UTC1h 51m
2026-07-09 AAL1501 HWO → BNA Jul 9, 19:55 UTCJul 9, 21:50 UTC1h 55m
2026-07-09 AAL1417 AUS → MIA Jul 9, 16:25 UTCJul 9, 18:45 UTC2h 20m
2026-07-09 AAL1417 AUS → MIA Jul 9, 16:25 UTCJul 9, 18:44 UTC2h 19m
2026-07-09 AAL1417 - Jul 9, 13:00 UTCJul 9, 15:25 UTC2h 25m
2026-07-09 AAL2894 MCO → MIA Jul 9, 11:15 UTCJul 9, 11:55 UTC40m
2026-07-09 AAL2894 MCO → MIA Jul 9, 11:15 UTCJul 9, 11:55 UTC40m
2026-07-09 AAL1813 HWO → MCO Jul 9, 04:05 UTCJul 9, 04:40 UTC35m
2026-07-09 AAL1813 MIA → MCO Jul 9, 04:00 UTCJul 9, 04:38 UTC38m
2026-07-09 AAL1069 - Jul 9, 00:45 UTCJul 9, 03:05 UTC2h 20m
2026-07-08 AAL1985 DCA → PIT Jul 8, 23:15 UTCJul 8, 23:50 UTC35m
2026-07-08 AAL967 MSY → DCA Jul 8, 20:10 UTCJul 8, 22:20 UTC2h 10m
2026-07-08 AAL3175 DCA → MSY Jul 8, 16:00 UTCJul 8, 18:15 UTC2h 15m
2026-07-08 AAL1605 BOS → DCA Jul 8, 13:25 UTCJul 8, 14:40 UTC1h 15m
2026-07-08 AAL1605 BOS → DCA Jul 8, 13:25 UTCJul 8, 14:30 UTC1h 5m
2026-07-08 AAL1605 DCA → BOS Jul 8, 11:05 UTCJul 8, 12:05 UTC1h 0m
2026-07-07 AAL1982 BOS → MIA Jul 7, 23:35 UTCJul 8, 01:05 UTC1h 30m
2026-07-07 AAL3135 - Jul 7, 20:40 UTCJul 7, 22:30 UTC1h 50m
2026-07-07 AAL3135 PHL → PHL Jul 7, 20:05 UTCJul 7, 20:25 UTC20m
2026-07-07 AAL2447 CHS → PHL Jul 7, 17:50 UTCJul 7, 19:15 UTC1h 25m
2026-07-07 AAL2447 CHS → PHL Jul 7, 17:49 UTCJul 7, 19:15 UTC1h 26m
2026-07-07 AAL2447 - Jul 7, 15:30 UTCJul 7, 16:45 UTC1h 15m
2026-07-07 AAL2980 - Jul 7, 10:25 UTCJul 7, 11:20 UTC55m
2026-07-07 AAL2980 CMH → PHL Jul 7, 10:20 UTCJul 7, 11:27 UTC1h 7m
2026-07-06 AAL1481 PHL → CMH Jul 6, 22:50 UTCJul 6, 23:55 UTC1h 5m
2026-07-06 AAL2354 PHL → PHL Jul 6, 21:10 UTCJul 6, 21:15 UTC5m
2026-07-06 AAL2354 - Jul 6, 19:55 UTCJul 6, 21:05 UTC1h 10m
2026-07-06 AAL2354 PWM → PHL Jul 6, 19:50 UTCJul 6, 21:01 UTC1h 11m

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 N711UW page for operator, model, and routing details .

Mode-S A9819B frequently asked

What is Mode-S code A9819B?
A9819B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N711UW.
Where is Mode-S A9819B registered?
Mode-S code A9819B 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 A9819B broadcasting right now?
Mode-S A9819B is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9819B, octal 52300633, decimal 11,108,763.
What flights does A9819B operate?
Mode-S A9819B has broadcast 20 distinct callsigns, including AAL2720, AAL3270, AAL1927, AAL712, AAL2354.