Apparatus

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sensors Mode-S transponder

AA3994

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N758US · AIRBUS A-319 · operated by BANK OF UTAH TRUSTEE

Hex
AA3994
Octal
52434624
Decimal
11,155,860
Country
US
Tail
N758US
Type
A319
Broadcasting now · callsign AAL2755 · 5,550 ft
Flights observed
578
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Current position

AA3994 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA3994 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
AAL2683 American Airlines 11 2026-04-27
AAL2559 American Airlines 9 2026-05-09
AAL2697 American Airlines 8 2026-05-24
AAL2448 American Airlines 8 2026-05-28
AAL2445 American Airlines 8 2026-07-06
AAL3173 American Airlines 7 2026-04-27
AAL2773 - 7 2026-06-25
AAL2717 American Airlines 7 2026-07-24
AAL1867 American Airlines 7 2026-04-27
AAL890 American Airlines 6 2026-04-20
AAL370 American Airlines 6 2026-07-24
AAL2736 American Airlines 6 2026-06-12
AAL2631 - 6 2026-06-25
AAL2415 American Airlines 6 2026-05-19
AAL2029 American Airlines 6 2026-04-18
AAL1658 American Airlines 6 2026-07-23
AAL3299 American Airlines 5 2026-07-23
AAL2934 - 5 2026-06-14
AAL2757 American Airlines 5 2026-04-28
AAL2410 - 5 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1557 IND → PHL Jul 26, 21:40 UTCJul 26, 23:00 UTC1h 20m
2026-07-26 AAL1557 IND → PHL Jul 26, 19:10 UTCJul 26, 20:10 UTC1h 0m
2026-07-26 AAL949 SDF → MIA Jul 26, 15:55 UTCJul 26, 17:30 UTC1h 35m
2026-07-26 AAL949 SDF → MIA Jul 26, 15:52 UTCJul 26, 17:27 UTC1h 35m
2026-07-26 AAL2916 DFW → LGA Jul 26, 12:50 UTCJul 26, 14:30 UTC1h 40m
2026-07-26 AAL2916 DFW → LGA Jul 26, 12:49 UTCJul 26, 14:30 UTC1h 41m
2026-07-26 AAL3247 BUR → PHX Jul 26, 00:15 UTCJul 26, 02:30 UTC2h 15m
2026-07-25 AAL3241 BOS → DFW Jul 25, 20:03 UTCJul 25, 22:23 UTC2h 20m
2026-07-25 AAL3241 BOS → DFW Jul 25, 20:05 UTCJul 25, 22:25 UTC2h 20m
2026-07-25 AAL3221 BOS → CLT Jul 25, 17:15 UTCJul 25, 18:50 UTC1h 35m
2026-07-25 AAL3221 BOS → CLT Jul 25, 14:35 UTCJul 25, 16:10 UTC1h 35m
2026-07-25 AAL1308 DCA → LAS Jul 25, 11:20 UTCJul 25, 13:15 UTC1h 55m
2026-07-25 AAL459 CLT → DEN Jul 25, 03:20 UTCJul 25, 04:45 UTC1h 25m
2026-07-24 AAL2424 SAN → PHL Jul 24, 23:05 UTCJul 25, 00:40 UTC1h 35m
2026-07-24 AAL2424 SAN → PHL Jul 24, 20:40 UTCJul 24, 21:55 UTC1h 15m
2026-07-24 AAL2717 BOS → LAX Jul 24, 17:45 UTCJul 24, 19:00 UTC1h 15m
2026-07-24 AAL2717 BOS → LAX Jul 24, 15:10 UTCJul 24, 16:45 UTC1h 35m
2026-07-24 AAL1439 PDX → PHX Jul 24, 11:05 UTCJul 24, 12:25 UTC1h 20m
2026-07-24 AAL370 JFK → CLT Jul 24, 03:00 UTCJul 24, 04:20 UTC1h 20m
2026-07-24 AAL370 JFK → CLT Jul 24, 02:56 UTCJul 24, 04:15 UTC1h 19m
2026-07-23 AAL3299 MIA → RDU Jul 23, 23:30 UTCJul 24, 01:00 UTC1h 30m
2026-07-23 AAL3299 MIA → RDU Jul 23, 23:26 UTCJul 24, 01:29 UTC2h 3m
2026-07-23 AAL3299 MIA → RDU Jul 23, 19:35 UTCJul 23, 21:50 UTC2h 15m
2026-07-23 AAL1658 CVG → DFW Jul 23, 17:20 UTCJul 23, 17:55 UTC35m
2026-07-23 AAL1658 CVG → DFW Jul 23, 17:18 UTCJul 23, 17:50 UTC32m
2026-07-23 AAL1658 CVG → DFW Jul 23, 15:40 UTCJul 23, 16:15 UTC35m
2026-07-23 AAL2273 CLT → RSW Jul 23, 11:50 UTCJul 23, 13:55 UTC2h 5m
2026-07-23 AAL2273 CLT → RSW Jul 23, 11:48 UTCJul 23, 13:52 UTC2h 4m
2026-07-23 AAL768 CLT → OKC Jul 23, 02:05 UTCJul 23, 04:15 UTC2h 10m
2026-07-22 AAL2909 - Jul 22, 21:55 UTCJul 22, 23:05 UTC1h 10m
2026-07-22 AAL2909 - Jul 22, 19:35 UTCJul 22, 20:35 UTC1h 0m
2026-07-22 AAL2254 PHL → CMH Jul 22, 17:35 UTCJul 22, 18:25 UTC50m
2026-07-22 AAL2254 PHL → CMH Jul 22, 15:35 UTCJul 22, 16:25 UTC50m
2026-07-21 AAL2110 - Jul 21, 15:55 UTCJul 21, 17:00 UTC1h 5m
2026-07-21 AAL2110 MEM → CLT Jul 21, 15:49 UTCJul 21, 17:08 UTC1h 19m
2026-07-21 AAL2110 - Jul 21, 13:15 UTCJul 21, 14:35 UTC1h 20m
2026-07-21 AAL2151 - Jul 21, 00:10 UTCJul 21, 02:05 UTC1h 55m
2026-07-20 AAL2151 - Jul 20, 20:40 UTCJul 20, 23:00 UTC2h 20m
2026-07-20 AAL2717 BOS → LAX Jul 20, 17:45 UTCJul 20, 18:55 UTC1h 10m
2026-07-20 AAL2717 BOS → LAX Jul 20, 15:20 UTCJul 20, 16:45 UTC1h 25m
2026-07-20 AAL978 - Jul 20, 12:15 UTCJul 20, 13:25 UTC1h 10m
2026-07-20 AAL392R GRR → DFW Jul 20, 10:00 UTCJul 20, 11:10 UTC1h 10m
2026-07-20 AAL392R GRR → DFW Jul 20, 09:56 UTCJul 20, 11:02 UTC1h 6m
2026-07-19 AAL9787 - Jul 19, 01:55 UTCJul 19, 02:30 UTC35m
2026-07-19 AAL9787 CHS → CLT Jul 19, 01:55 UTCJul 19, 02:30 UTC35m
2026-07-18 AAL1658 - Jul 18, 16:35 UTCJul 18, 17:05 UTC30m
2026-07-18 AAL103R LAX → DFW Jul 18, 11:50 UTCJul 18, 13:05 UTC1h 15m
2026-07-17 AAL1007 - Jul 17, 03:50 UTCJul 17, 04:59 UTC1h 10m
2026-07-17 AAL1794 - Jul 17, 01:09 UTCJul 17, 02:25 UTC1h 15m
2026-07-17 AAL1794 DTW → CLT Jul 17, 01:09 UTCJul 17, 02:24 UTC1h 15m

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 N758US page for operator, model, and routing details .

Mode-S AA3994 frequently asked

What is Mode-S code AA3994?
AA3994 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N758US.
Where is Mode-S AA3994 registered?
Mode-S code AA3994 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 AA3994 broadcasting right now?
Yes. Mode-S AA3994 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA3994, octal 52434624, decimal 11,155,860.
What flights does AA3994 operate?
Mode-S AA3994 has broadcast 20 distinct callsigns, including AAL2683, AAL2559, AAL2697, AAL2448, AAL2445.