Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A4BA76

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4032T · AIRBUS A-319 · operated by AMERICAN AIRLINES INC

Hex
A4BA76
Octal
51135166
Decimal
10,795,638
Country
US
Tail
N4032T
Type
A319
No current signal · last broadcast 27d ago
Flights observed
346
Distinct callsigns
20
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A4BA76.

Country allocation

The ICAO 24-bit address A4BA76 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
AAL3133 American Airlines 9 2026-04-27
AAL1799 American Airlines 9 2026-06-05
AAL2432 American Airlines 7 2026-06-13
AAL956 American Airlines 6 2026-05-13
AAL642 American Airlines 6 2026-05-21
AAL2335 American Airlines 6 2026-06-11
AAL2249 American Airlines 6 2026-05-09
AAL1796 American Airlines 6 2026-05-14
AAL680 American Airlines 5 2026-04-27
AAL367 American Airlines 5 2026-05-13
AAL347 American Airlines 5 2026-06-11
AAL3025 American Airlines 5 2026-06-07
AAL2836 American Airlines 5 2026-05-19
AAL2779 American Airlines 5 2026-05-23
AAL2403 American Airlines 5 2026-04-24
AAL2312 American Airlines 5 2026-06-11
AAL1744 American Airlines 5 2026-05-15
AAL3268 American Airlines 4 2026-05-02
AAL3119 American Airlines 4 2026-04-29
AAL3024 American Airlines 4 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-16 AAL9780 DFW → PAE Jun 16, 12:10 UTCJun 16, 16:25 UTC4h 15m
2026-06-16 AAL9607 MSP → CLT Jun 16, 04:30 UTCJun 16, 05:34 UTC1h 5m
2026-06-16 AAL9607 MSP → CLT Jun 16, 04:27 UTCJun 16, 05:33 UTC1h 6m
2026-06-16 AAL9606 LAX → LHR Jun 16, 02:40 UTCJun 16, 03:39 UTC1h 0m
2026-06-15 AAL883 - Jun 15, 22:54 UTCJun 16, 00:35 UTC1h 40m
2026-06-15 AAL1970 - Jun 15, 18:35 UTCJun 15, 20:59 UTC2h 25m
2026-06-15 AAL1970 ORD → JAC Jun 15, 18:32 UTCJun 15, 21:24 UTC2h 52m
2026-06-15 AAL2675 RSW → ORD Jun 15, 13:54 UTCJun 15, 16:30 UTC2h 35m
2026-06-15 AAL2661 PHL → SFO Jun 15, 03:40 UTCJun 15, 07:20 UTC3h 40m
2026-06-15 AAL3282 - Jun 15, 00:10 UTCJun 15, 02:15 UTC2h 5m
2026-06-14 AAL976 IAH → PHL Jun 14, 20:05 UTCJun 14, 22:10 UTC2h 5m
2026-06-14 AAL976 IAH → PHL Jun 14, 20:05 UTCJun 14, 22:34 UTC2h 29m
2026-06-14 AAL928 MGA → MIA Jun 14, 17:15 UTCJun 14, 18:40 UTC1h 25m
2026-06-14 AAL928 MGA → MIA Jun 14, 14:35 UTCJun 14, 16:10 UTC1h 35m
2026-06-14 AAL2158 CLT → MSY Jun 14, 03:45 UTCJun 14, 04:55 UTC1h 10m
2026-06-14 AAL2158 CLT → MSY Jun 14, 01:55 UTCJun 14, 02:50 UTC55m
2026-06-13 AAL2743 - Jun 13, 18:45 UTCJun 13, 23:35 UTC4h 50m
2026-06-13 AAL2432 DFW → CMH Jun 13, 14:35 UTCJun 13, 17:40 UTC3h 5m
2026-06-12 AAL2533 DFW → PHL Jun 12, 23:35 UTCJun 13, 01:20 UTC1h 45m
2026-06-12 AAL2533 DFW → PHL Jun 12, 20:45 UTCJun 12, 22:10 UTC1h 25m
2026-06-12 AAL3023 STS → DFW Jun 12, 16:30 UTCJun 12, 19:25 UTC2h 55m
2026-06-11 AAL3023 STS → DFW Jun 11, 23:35 UTCJun 12, 19:25 UTC19h 51m
2026-06-11 AAL817 PHX → PHL Jun 11, 22:40 UTCJun 12, 00:45 UTC2h 6m
2026-06-11 AAL817 PHX → PHL Jun 11, 22:38 UTCJun 12, 01:08 UTC2h 30m
2026-06-11 AAL305 MIA → SEA Jun 11, 18:35 UTCJun 11, 21:00 UTC2h 25m
2026-06-11 AAL1898 PHL → EYW Jun 11, 15:00 UTCJun 11, 17:10 UTC2h 10m
2026-06-11 AAL2335 ABQ → DFW Jun 11, 12:20 UTCJun 11, 13:10 UTC50m
2026-06-11 AAL347 PUJ → MIA Jun 11, 06:25 UTCJun 11, 07:10 UTC45m
2026-06-11 AAL347 PUJ → MIA Jun 11, 03:15 UTCJun 11, 04:30 UTC1h 15m
2026-06-11 AAL2312 DCA → LGA Jun 11, 01:10 UTCJun 11, 02:00 UTC50m
2026-06-10 AAL2312 DCA → LGA Jun 10, 19:25 UTCJun 10, 20:25 UTC1h 0m
2026-06-10 AAL2932 DCA → BOS Jun 10, 17:00 UTCJun 10, 17:45 UTC45m
2026-06-10 AAL2932 DCA → BOS Jun 10, 16:59 UTCJun 10, 17:44 UTC45m
2026-06-10 AAL2932 DCA → BOS Jun 10, 14:35 UTCJun 10, 15:25 UTC50m
2026-06-10 AAL2335 ABQ → DFW Jun 10, 12:45 UTCJun 10, 13:30 UTC45m
2026-06-10 AAL347 PUJ → MIA Jun 10, 00:05 UTCJun 10, 00:50 UTC45m
2026-06-09 AAL2312 DCA → LGA Jun 9, 22:05 UTCJun 9, 22:55 UTC50m
2026-06-09 AAL2312 DCA → LGA Jun 9, 22:02 UTCJun 9, 22:53 UTC51m
2026-06-09 AAL2312 DCA → LGA Jun 9, 20:15 UTCJun 9, 20:30 UTC15m
2026-06-09 AAL2445 BOS → MIA Jun 9, 16:45 UTCJun 9, 19:30 UTC2h 45m
2026-06-09 AAL2445 BOS → MIA Jun 9, 12:50 UTCJun 9, 15:10 UTC2h 20m
2026-06-08 AAL3147 LAX → ELP Jun 8, 21:45 UTCJun 9, 00:10 UTC2h 25m
2026-06-08 AAL1814 DFW → PHL Jun 8, 18:15 UTCJun 8, 20:25 UTC2h 10m
2026-06-08 AAL3024 ORD → SJD Jun 8, 14:00 UTCJun 8, 15:35 UTC1h 35m
2026-06-07 AAL3025 CLT → TVC Jun 7, 23:10 UTCJun 8, 00:50 UTC1h 40m
2026-06-07 AAL3025 CLT → TVC Jun 7, 23:08 UTCJun 8, 00:59 UTC1h 51m
2026-06-07 AAL305 MIA → SEA Jun 7, 18:35 UTCJun 7, 21:05 UTC2h 30m
2026-06-07 AAL305 MIA → SEA Jun 7, 18:25 UTCJun 7, 21:00 UTC2h 35m
2026-06-07 AAL1898 PHL → EYW Jun 7, 14:45 UTCJun 7, 16:55 UTC2h 10m
2026-06-07 AAL1898 PHL → EYW Jun 7, 14:41 UTCJun 7, 17:05 UTC2h 24m

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 N4032T page for operator, model, and routing details .

Mode-S A4BA76 frequently asked

What is Mode-S code A4BA76?
A4BA76 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4032T.
Where is Mode-S A4BA76 registered?
Mode-S code A4BA76 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 A4BA76 broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4BA76, octal 51135166, decimal 10,795,638.
What flights does A4BA76 operate?
Mode-S A4BA76 has broadcast 20 distinct callsigns, including AAL3133, AAL1799, AAL2432, AAL956, AAL642.