Apparatus

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sensors Mode-S transponder

A16DB9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N191UW · AIRBUS A-321 · operated by BANK OF UTAH TRUSTEE

Hex
A16DB9
Octal
50266671
Decimal
10,579,385
Country
US
Tail
N191UW
Type
A321
Broadcasting now · callsign AAL317 · 35,025 ft
Flights observed
499
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Current position

A16DB9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A16DB9 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
AAL1155 - 8 2026-07-17
AAL3001 American Airlines 5 2026-06-07
AAL2550 - 5 2026-07-02
AAL2487 - 5 2026-07-06
AAL2461 American Airlines 5 2026-05-31
AAL2319 American Airlines 5 2026-07-25
AAL1649 American Airlines 5 2026-07-25
AAL799 - 4 2026-07-15
AAL3162 American Airlines 4 2026-05-11
AAL3123 - 4 2026-04-13
AAL2851 American Airlines 4 2026-04-26
AAL2651 American Airlines 4 2026-05-17
AAL2584 American Airlines 4 2026-06-06
AAL2527 American Airlines 4 2026-06-12
AAL2444 - 4 2026-07-11
AAL2359 American Airlines 4 2026-06-17
AAL1862 - 4 2026-07-04
AAL1059 - 4 2026-07-02
AAL1032 - 4 2026-07-08
AAL1018 - 4 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL767 BNA → PHL Jul 26, 19:15 UTCJul 26, 22:15 UTC3h 0m
2026-07-26 AAL767 BNA → PHL Jul 26, 14:00 UTCJul 26, 17:40 UTC3h 40m
2026-07-26 AAL633 PHX → DFW Jul 26, 02:39 UTCJul 26, 04:36 UTC1h 57m
2026-07-26 AAL633 PHX → DFW Jul 26, 02:45 UTCJul 26, 04:45 UTC2h 0m
2026-07-25 AAL2319 DFW → MSY Jul 25, 23:05 UTCJul 26, 01:05 UTC2h 0m
2026-07-25 AAL2319 DFW → MSY Jul 25, 23:04 UTCJul 26, 01:05 UTC2h 1m
2026-07-25 AAL2647 LIT → CLT Jul 25, 20:15 UTCJul 25, 21:30 UTC1h 15m
2026-07-25 AAL1649 AUS → TPA Jul 25, 13:50 UTCJul 25, 16:05 UTC2h 15m
2026-07-25 AAL1649 AUS → TPA Jul 25, 13:47 UTCJul 25, 17:24 UTC3h 37m
2026-07-25 AAL2840 ORD → PHL Jul 25, 03:55 UTCJul 25, 05:40 UTC1h 45m
2026-07-25 AAL3242 SMF → LAX Jul 25, 00:00 UTCJul 25, 02:40 UTC2h 40m
2026-07-24 AAL1475 CLE → PHL Jul 24, 20:45 UTCJul 24, 22:10 UTC1h 25m
2026-07-24 AAL1475 CLE → PHL Jul 24, 20:41 UTCJul 24, 22:09 UTC1h 28m
2026-07-24 AAL1475 CLE → PHL Jul 24, 18:00 UTCJul 24, 19:20 UTC1h 20m
2026-07-24 AAL2195 SLC → DFW Jul 24, 14:15 UTCJul 24, 16:15 UTC2h 0m
2026-07-24 AAL2195 SLC → DFW Jul 24, 14:10 UTCJul 24, 16:15 UTC2h 5m
2026-07-24 AAL2993 ORD → BDL Jul 24, 03:00 UTCJul 24, 05:10 UTC2h 10m
2026-07-23 AAL2815 LGA → CLT Jul 23, 22:25 UTCJul 24, 00:35 UTC2h 10m
2026-07-23 AAL1754 IAH → DFW Jul 23, 16:20 UTCJul 23, 19:15 UTC2h 55m
2026-07-23 AAL1754 IAH → DFW Jul 23, 12:00 UTCJul 23, 15:00 UTC3h 0m
2026-07-23 AAL2751 DFW → PHL Jul 23, 06:55 UTCJul 23, 10:35 UTC3h 40m
2026-07-23 AAL1275 DCA → LAX Jul 23, 01:25 UTCJul 23, 05:30 UTC4h 5m
2026-07-23 AAL1275 DCA → LAX Jul 23, 01:21 UTCJul 23, 05:25 UTC4h 4m
2026-07-22 AAL2270 ORD → EWR Jul 22, 21:35 UTCJul 22, 23:05 UTC1h 30m
2026-07-22 AAL2270 ORD → EWR Jul 22, 21:30 UTCJul 22, 23:02 UTC1h 32m
2026-07-22 AAL2270 ORD → EWR Jul 22, 18:55 UTCJul 22, 20:15 UTC1h 20m
2026-07-22 AAL1274 MCO → AUS Jul 22, 13:35 UTCJul 22, 17:25 UTC3h 50m
2026-07-22 AAL1133 DFW → RIC Jul 22, 02:45 UTCJul 22, 04:40 UTC1h 55m
2026-07-21 AAL21Q SMF → DFW Jul 21, 20:55 UTCJul 22, 00:10 UTC3h 15m
2026-07-19 AAL2508 - Jul 19, 23:35 UTCJul 20, 04:30 UTC4h 55m
2026-07-19 AAL1179 ORD → SNA Jul 19, 13:45 UTCJul 19, 21:50 UTC8h 5m
2026-07-19 AAL575 DFW → LGA Jul 19, 10:08 UTCJul 19, 12:15 UTC2h 7m
2026-07-19 AAL575 DFW → LGA Jul 19, 10:10 UTCJul 19, 12:10 UTC2h 0m
2026-07-19 AAL2458 - Jul 19, 04:35 UTCJul 19, 07:10 UTC2h 35m
2026-07-19 AAL3195 DFW → SAN Jul 19, 00:35 UTCJul 19, 03:10 UTC2h 35m
2026-07-18 AAL2647 LIT → CLT Jul 18, 20:50 UTCJul 18, 22:00 UTC1h 10m
2026-07-18 AAL1649 AUS → TPA Jul 18, 14:31 UTCJul 18, 18:15 UTC3h 44m
2026-07-18 AAL1649 AUS → TPA Jul 18, 14:35 UTCJul 18, 17:00 UTC2h 25m
2026-07-18 AAL1148 PHX → ORD Jul 18, 08:20 UTCJul 18, 11:25 UTC3h 5m
2026-07-18 AAL1022 PHL → PWM Jul 18, 05:30 UTCJul 18, 06:15 UTC45m
2026-07-18 AAL1022 PHL → PWM Jul 18, 05:30 UTCJul 18, 06:14 UTC44m
2026-07-18 AAL1022 PHL → PWM Jul 18, 02:29 UTCJul 18, 03:30 UTC1h 1m
2026-07-17 AAL1155 DFW → PHX Jul 17, 23:10 UTCJul 18, 01:10 UTC2h 0m
2026-07-17 AAL1155 DFW → PHX Jul 17, 23:07 UTCJul 18, 01:04 UTC1h 57m
2026-07-17 AAL1828 - Jul 17, 18:40 UTCJul 17, 21:34 UTC2h 55m
2026-07-17 AAL1828 - Jul 17, 14:30 UTCJul 17, 17:15 UTC2h 45m
2026-07-17 AAL1271 LAX → ORD Jul 17, 03:10 UTCJul 17, 05:15 UTC2h 5m
2026-07-16 AAL2100 - Jul 16, 23:55 UTCJul 17, 01:05 UTC1h 10m
2026-07-16 AAL2100 - Jul 16, 21:05 UTCJul 16, 22:19 UTC1h 15m
2026-07-16 AAL2127 - Jul 16, 18:19 UTCJul 16, 19:30 UTC1h 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 N191UW page for operator, model, and routing details .

Mode-S A16DB9 frequently asked

What is Mode-S code A16DB9?
A16DB9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N191UW.
Where is Mode-S A16DB9 registered?
Mode-S code A16DB9 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 A16DB9 broadcasting right now?
Yes. Mode-S A16DB9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A16DB9, octal 50266671, decimal 10,579,385.
What flights does A16DB9 operate?
Mode-S A16DB9 has broadcast 20 distinct callsigns, including AAL1155, AAL3001, AAL2550, AAL2487, AAL2461.