Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC9F52

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N912NN · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
AC9F52
Octal
53117522
Decimal
11,312,978
Country
US
Tail
N912NN
Type
B738
Broadcasting now · callsign AAL2307 · 31,000 ft
Flights observed
462
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC9F52 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC9F52 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
AAL2581 - 8 2026-07-03
AAL310 American Airlines 5 2026-06-28
AAL2735 American Airlines 5 2026-06-11
AAL1828 - 5 2026-06-21
AAL1523 - 5 2026-06-28
AAL866 - 4 2026-07-14
AAL670 - 4 2026-06-16
AAL2225 - 4 2026-07-12
AAL1734 American Airlines 4 2026-05-23
AAL1464 - 4 2026-04-14
AAL1294 - 4 2026-07-09
AAL1074 American Airlines 4 2026-06-10
AAL390 - 3 2026-07-11
AAL389 - 3 2026-07-11
AAL363 American Airlines 3 2026-05-30
AAL3309 American Airlines 3 2026-06-11
AAL3201 American Airlines 3 2026-05-15
AAL318 American Airlines 3 2026-06-01
AAL3140 - 3 2026-07-10
AAL2954 American Airlines 3 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL2307 - Jul 14, 20:15 UTCJul 14, 20:30 UTC15m
2026-07-14 AAL554 - Jul 14, 16:45 UTCJul 14, 18:40 UTC1h 55m
2026-07-14 AAL866 ABQ → PHX Jul 14, 05:20 UTCJul 14, 06:15 UTC55m
2026-07-14 AAL866 ORD → ABQ Jul 14, 00:15 UTCJul 14, 03:05 UTC2h 50m
2026-07-13 AAL1563 BOS → ORD Jul 13, 19:35 UTCJul 13, 21:55 UTC2h 20m
2026-07-13 AAL1563 ORD → BOS Jul 13, 15:45 UTCJul 13, 17:40 UTC1h 55m
2026-07-13 AAL1509 - Jul 13, 11:05 UTCJul 13, 13:05 UTC2h 0m
2026-07-12 AAL2595 - Jul 12, 22:50 UTCJul 13, 00:25 UTC1h 35m
2026-07-12 AAL2225 - Jul 12, 18:50 UTCJul 12, 20:45 UTC1h 55m
2026-07-12 AAL2225 - Jul 12, 15:35 UTCJul 12, 17:35 UTC2h 0m
2026-07-12 AAL2021 - Jul 12, 12:35 UTCJul 12, 13:55 UTC1h 20m
2026-07-11 AAL1682 DFW → CLE Jul 11, 22:01 UTCJul 12, 00:15 UTC2h 15m
2026-07-11 AAL390 - Jul 11, 17:50 UTCJul 11, 20:00 UTC2h 10m
2026-07-11 AAL390 MEX → DFW Jul 11, 17:50 UTCJul 11, 19:56 UTC2h 6m
2026-07-11 AAL389 DFW → MEX Jul 11, 14:05 UTCJul 11, 16:15 UTC2h 10m
2026-07-11 AAL1108 ARB → DFW Jul 11, 09:45 UTCJul 11, 12:20 UTC2h 35m
2026-07-10 AAL3140 PHX → DTW Jul 10, 22:45 UTCJul 11, 02:05 UTC3h 20m
2026-07-10 AAL2477 SAN → PHX Jul 10, 20:16 UTCJul 10, 21:09 UTC53m
2026-07-10 AAL2477 - Jul 10, 20:20 UTCJul 10, 21:10 UTC50m
2026-07-10 AAL2477 PHX → SAN Jul 10, 17:50 UTCJul 10, 18:40 UTC50m
2026-07-10 AAL2574 STL → PHX Jul 10, 13:15 UTCJul 10, 16:10 UTC2h 55m
2026-07-09 AAL2686 - Jul 9, 23:10 UTCJul 10, 00:35 UTC1h 25m
2026-07-09 AAL1294 - Jul 9, 19:55 UTCJul 9, 21:25 UTC1h 30m
2026-07-09 AAL1294 JFK → CLT Jul 9, 19:55 UTCJul 9, 21:25 UTC1h 30m
2026-07-09 AAL1766 DFW → JFK Jul 9, 15:05 UTCJul 9, 18:20 UTC3h 15m
2026-07-09 AAL1959 - Jul 9, 11:15 UTCJul 9, 12:35 UTC1h 20m
2026-07-08 AAL2034 - Jul 8, 22:50 UTCJul 8, 23:50 UTC1h 0m
2026-07-08 AAL2400 RDU → DFW Jul 8, 18:25 UTCJul 8, 21:00 UTC2h 35m
2026-07-08 AAL2400 RDU → DFW Jul 8, 18:25 UTCJul 8, 20:58 UTC2h 33m
2026-07-08 AAL2400 - Jul 8, 14:50 UTCJul 8, 17:15 UTC2h 25m
2026-07-08 AAL1884 - Jul 8, 11:15 UTCJul 8, 12:20 UTC1h 5m
2026-07-08 AAL1884 MEM → DFW Jul 8, 11:10 UTCJul 8, 12:12 UTC1h 2m
2026-07-08 AAL1646 - Jul 8, 00:10 UTCJul 8, 01:10 UTC1h 0m
2026-07-07 AAL1656 - Jul 7, 20:00 UTCJul 7, 22:20 UTC2h 20m
2026-07-07 AAL1656 - Jul 7, 16:35 UTCJul 7, 18:40 UTC2h 5m
2026-07-07 AAL158Q DCA → DFW Jul 7, 12:30 UTCJul 7, 15:10 UTC2h 40m
2026-07-06 AAL3138 - Jul 6, 20:10 UTCJul 6, 22:15 UTC2h 5m
2026-07-06 AAL3138 MIA → DCA Jul 6, 20:06 UTCJul 6, 22:12 UTC2h 6m
2026-07-06 AAL815 BOS → MIA Jul 6, 15:10 UTCJul 6, 18:00 UTC2h 50m
2026-07-06 AAL815 - Jul 6, 11:05 UTCJul 6, 13:50 UTC2h 45m
2026-07-06 AAL3244 MIA → LAS Jul 6, 00:05 UTCJul 6, 02:20 UTC2h 15m
2026-07-05 AAL2769 ORD → DCA Jul 5, 20:25 UTCJul 5, 22:00 UTC1h 35m
2026-07-05 AAL2769 ORD → DCA Jul 5, 20:20 UTCJul 5, 22:00 UTC1h 40m
2026-07-05 AAL2433 RSW → ORD Jul 5, 15:45 UTCJul 5, 18:35 UTC2h 50m
2026-07-05 AAL2433 ORD → RSW Jul 5, 12:05 UTCJul 5, 14:30 UTC2h 25m
2026-07-05 AAL3321 JFK → ORD Jul 5, 00:55 UTCJul 5, 03:40 UTC2h 45m
2026-07-04 AAL1049 - Jul 4, 18:50 UTCJul 4, 22:10 UTC3h 20m
2026-07-04 AAL1049 DFW → JFK Jul 4, 18:48 UTCJul 4, 22:03 UTC3h 15m
2026-07-04 AAL2851 - Jul 4, 16:05 UTCJul 4, 16:45 UTC40m
2026-07-04 AAL2851 - Jul 4, 14:05 UTCJul 4, 14:50 UTC45m

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 N912NN page for operator, model, and routing details .

Mode-S AC9F52 frequently asked

What is Mode-S code AC9F52?
AC9F52 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N912NN.
Where is Mode-S AC9F52 registered?
Mode-S code AC9F52 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 AC9F52 broadcasting right now?
Yes. Mode-S AC9F52 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC9F52, octal 53117522, decimal 11,312,978.
What flights does AC9F52 operate?
Mode-S AC9F52 has broadcast 20 distinct callsigns, including AAL2581, AAL310, AAL2735, AAL1828, AAL1523.