Apparatus

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sensors Mode-S transponder

A0CFBD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N151UW · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A0CFBD
Octal
50147675
Decimal
10,538,941
Country
US
Tail
N151UW
Type
A321
Broadcasting now · callsign AAL1430 · 30,000 ft
Flights observed
536
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Current position

A0CFBD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0CFBD 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
AAL2117 - 7 2026-07-07
AAL60G American Airlines 5 2026-05-20
AAL3193 American Airlines 5 2026-05-01
AAL2836 American Airlines 5 2026-07-24
AAL2615 - 5 2026-06-18
AAL2387 American Airlines 5 2026-07-21
AAL1976 American Airlines 5 2026-07-24
AAL1861 - 5 2026-06-23
AAL1283 American Airlines 5 2026-04-18
AAL3049 American Airlines 4 2026-05-11
AAL3035 American Airlines 4 2026-05-09
AAL2859 American Airlines 4 2026-05-16
AAL2669 American Airlines 4 2026-07-17
AAL2602 - 4 2026-06-25
AAL2583 - 4 2026-07-14
AAL2029 - 4 2026-07-04
AAL1696 American Airlines 4 2026-05-23
AAL1644 - 4 2026-06-25
AAL1584 American Airlines 4 2026-06-06
AAL1459 - 4 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL820 DFW → ORD Jul 26, 18:45 UTCJul 26, 21:15 UTC2h 30m
2026-07-26 AAL1206 IND → PHL Jul 26, 14:00 UTCJul 26, 17:20 UTC3h 20m
2026-07-26 AAL700 IAH → DFW Jul 26, 11:25 UTCJul 26, 12:05 UTC40m
2026-07-26 AAL700 IAH → DFW Jul 26, 11:20 UTCJul 26, 12:05 UTC45m
2026-07-26 AAL2209 DFW → IAH Jul 26, 03:45 UTCJul 26, 04:30 UTC45m
2026-07-26 AAL1698 MIA → CLT Jul 26, 00:15 UTCJul 26, 02:20 UTC2h 5m
2026-07-26 AAL1698 MIA → CLT Jul 26, 00:10 UTCJul 26, 02:19 UTC2h 9m
2026-07-25 AAL1525 DFW → LGA Jul 25, 12:15 UTCJul 25, 13:30 UTC1h 15m
2026-07-25 AAL3200 CLT → MCO Jul 25, 02:45 UTCJul 25, 03:55 UTC1h 10m
2026-07-25 AAL2100 MCI → DFW Jul 25, 00:00 UTCJul 25, 01:15 UTC1h 15m
2026-07-24 AAL2100 MCI → DFW Jul 24, 23:55 UTCJul 25, 01:14 UTC1h 19m
2026-07-24 AAL2100 MCI → DFW Jul 24, 21:05 UTCJul 24, 22:30 UTC1h 25m
2026-07-24 AAL2836 JFK → LAS Jul 24, 18:10 UTCJul 24, 19:25 UTC1h 15m
2026-07-24 AAL2836 JFK → LAS Jul 24, 18:07 UTCJul 24, 19:22 UTC1h 15m
2026-07-24 AAL2836 JFK → LAS Jul 24, 15:30 UTCJul 24, 16:40 UTC1h 10m
2026-07-24 AAL1235 MIA → BOS Jul 24, 12:15 UTCJul 24, 13:55 UTC1h 40m
2026-07-24 AAL1976 CLT → SYR Jul 24, 03:20 UTCJul 24, 04:40 UTC1h 20m
2026-07-24 AAL1976 CLT → SYR Jul 24, 03:15 UTCJul 24, 04:37 UTC1h 22m
2026-07-23 AAL1067 DEN → DFW Jul 23, 21:10 UTCJul 24, 00:30 UTC3h 20m
2026-07-23 AAL823 UVF → CLT Jul 23, 18:10 UTCJul 23, 18:20 UTC10m
2026-07-23 AAL823 UVF → CLT Jul 23, 14:20 UTCJul 23, 17:35 UTC3h 15m
2026-07-23 AAL2187 DFW → OAX Jul 23, 10:35 UTCJul 23, 12:20 UTC1h 45m
2026-07-23 AAL2187 DFW → OAX Jul 23, 10:34 UTCJul 23, 12:17 UTC1h 43m
2026-07-23 AAL2942 MIA → BOS Jul 23, 04:45 UTCJul 23, 09:30 UTC4h 45m
2026-07-23 AAL2930 PWM → CLT Jul 23, 00:00 UTCJul 23, 00:55 UTC55m
2026-07-22 AAL2930 PWM → CLT Jul 22, 23:59 UTCJul 23, 01:01 UTC1h 2m
2026-07-22 AAL3220 SBP → PHX Jul 22, 18:45 UTCJul 22, 22:25 UTC3h 40m
2026-07-22 AAL2409 ORD → TPA Jul 22, 04:15 UTCJul 22, 05:25 UTC1h 10m
2026-07-22 AAL2409 ORD → TPA Jul 22, 03:30 UTCJul 22, 03:35 UTC5m
2026-07-21 AAL2387 EWR → DFW Jul 21, 23:15 UTCJul 22, 02:40 UTC3h 25m
2026-07-21 AAL2387 EWR → DFW Jul 21, 17:20 UTCJul 21, 20:45 UTC3h 25m
2026-07-21 AAL1090 DEN → DFW Jul 21, 14:00 UTCJul 21, 15:30 UTC1h 30m
2026-07-21 AAL662P DFW → DEN Jul 21, 11:15 UTCJul 21, 12:45 UTC1h 30m
2026-07-21 AAL662P DFW → DEN Jul 21, 11:14 UTCJul 21, 12:41 UTC1h 27m
2026-07-21 AAL3272 TPA → DFW Jul 21, 01:55 UTCJul 21, 04:00 UTC2h 5m
2026-07-21 AAL3272 TPA → DFW Jul 21, 01:50 UTCJul 21, 03:59 UTC2h 9m
2026-07-20 AAL3272 - Jul 20, 22:10 UTCJul 21, 00:20 UTC2h 9m
2026-07-20 AAL286G LAS → DFW Jul 20, 18:10 UTCJul 20, 20:30 UTC2h 20m
2026-07-19 AAL884 DFW → LAS Jul 19, 23:40 UTCJul 20, 02:30 UTC2h 50m
2026-07-19 AAL2633 - Jul 19, 18:50 UTCJul 19, 22:15 UTC3h 25m
2026-07-19 AAL2633 SMF → DFW Jul 19, 18:47 UTCJul 19, 22:12 UTC3h 25m
2026-07-19 AAL2633 DFW → SMF Jul 19, 14:40 UTCJul 19, 17:35 UTC2h 55m
2026-07-19 AAL1445 LGA → DFW Jul 19, 08:50 UTCJul 19, 11:15 UTC2h 25m
2026-07-19 AAL1445 LGA → DFW Jul 19, 08:46 UTCJul 19, 11:20 UTC2h 34m
2026-07-19 AAL1504 - Jul 19, 03:50 UTCJul 19, 06:25 UTC2h 35m
2026-07-19 AAL1504 DFW → LAX Jul 19, 03:48 UTCJul 19, 06:21 UTC2h 33m
2026-07-18 AAL1662 - Jul 18, 23:25 UTCJul 19, 01:35 UTC2h 10m
2026-07-18 AAL1662 - Jul 18, 20:00 UTCJul 18, 22:05 UTC2h 5m
2026-07-18 AAL1241 LAS → DFW Jul 18, 16:15 UTCJul 18, 18:45 UTC2h 30m
2026-07-18 AAL1241 LAS → DFW Jul 18, 16:15 UTCJul 18, 18:45 UTC2h 30m

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 N151UW page for operator, model, and routing details .

Mode-S A0CFBD frequently asked

What is Mode-S code A0CFBD?
A0CFBD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N151UW.
Where is Mode-S A0CFBD registered?
Mode-S code A0CFBD 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 A0CFBD broadcasting right now?
Yes. Mode-S A0CFBD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0CFBD, octal 50147675, decimal 10,538,941.
What flights does A0CFBD operate?
Mode-S A0CFBD has broadcast 20 distinct callsigns, including AAL2117, AAL60G, AAL3193, AAL2836, AAL2615.