Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACF849

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N935AN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
ACF849
Octal
53174111
Decimal
11,335,753
Country
US
Tail
N935AN
Type
B738
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
507
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S ACF849.

Country allocation

The ICAO 24-bit address ACF849 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
AAL1609 American Airlines 10 2026-07-04
AAL2925 - 7 2026-07-07
AAL1478 - 7 2026-07-06
AAL2731 - 6 2026-06-30
AAL1029 American Airlines 6 2026-06-27
AAL551 American Airlines 5 2026-06-22
AAL2681 - 5 2026-06-30
AAL2624 - 5 2026-07-08
AAL2208 American Airlines 5 2026-05-21
AAL2194 American Airlines 5 2026-07-23
AAL1038 - 5 2026-06-30
AAL890 - 4 2026-06-19
AAL874 American Airlines 4 2026-05-05
AAL808 - 4 2026-07-06
AAL319 - 4 2026-07-08
AAL2896 - 4 2026-07-12
AAL2819 - 4 2026-07-05
AAL2812 - 4 2026-06-28
AAL1691 - 4 2026-06-22
AAL1669 - 4 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL914 CTG → MIA Jul 26, 20:30 UTCJul 26, 20:45 UTC15m
2026-07-26 AAL2173 MIA → CTG Jul 26, 16:40 UTCJul 26, 17:00 UTC20m
2026-07-26 AAL2173 MIA → CTG Jul 26, 16:40 UTCJul 26, 19:08 UTC2h 28m
2026-07-26 AAL3154 DFW → CMH Jul 26, 12:40 UTCJul 26, 14:15 UTC1h 35m
2026-07-26 AAL3154 DFW → CMH Jul 26, 12:15 UTCJul 26, 14:35 UTC2h 20m
2026-07-25 AAL2657 SEA → DFW Jul 25, 23:20 UTCJul 26, 01:20 UTC2h 0m
2026-07-25 AAL1028 AUA → MIA Jul 25, 18:40 UTCJul 25, 21:10 UTC2h 30m
2026-07-25 AAL1028 AUA → MIA Jul 25, 18:36 UTCJul 25, 21:06 UTC2h 30m
2026-07-25 AAL1028 AUA → MIA Jul 25, 14:55 UTCJul 25, 17:15 UTC2h 20m
2026-07-25 AAL3190 ATL → MIA Jul 25, 11:30 UTCJul 25, 13:05 UTC1h 35m
2026-07-24 AAL2391 CLT → ORD Jul 24, 23:50 UTCJul 25, 03:35 UTC3h 45m
2026-07-24 AAL2058 SNA → DFW Jul 24, 20:05 UTCJul 24, 22:20 UTC2h 15m
2026-07-24 AAL2058 SNA → DFW Jul 24, 16:35 UTCJul 24, 18:45 UTC2h 10m
2026-07-23 AAL2548 LGA → ORD Jul 23, 20:40 UTCJul 23, 22:15 UTC1h 35m
2026-07-23 AAL2548 LGA → ORD Jul 23, 20:37 UTCJul 23, 22:14 UTC1h 37m
2026-07-23 AAL1586 - Jul 23, 15:10 UTCJul 23, 19:05 UTC3h 55m
2026-07-23 AAL1586 ORD → SFO Jul 23, 15:09 UTCJul 23, 19:03 UTC3h 54m
2026-07-23 AAL2346 DFW → ORD Jul 23, 02:55 UTCJul 23, 04:40 UTC1h 45m
2026-07-23 AAL2194 ORD → CLT Jul 23, 00:25 UTCJul 23, 01:25 UTC1h 0m
2026-07-22 AAL2194 ORD → CLT Jul 22, 21:55 UTCJul 22, 23:10 UTC1h 15m
2026-07-22 AAL1114 SYR → DFW Jul 22, 17:48 UTCJul 22, 19:58 UTC2h 10m
2026-07-22 AAL1114 SYR → DFW Jul 22, 14:25 UTCJul 22, 20:00 UTC5h 35m
2026-07-22 AAL3329 - Jul 22, 11:10 UTCJul 22, 12:35 UTC1h 25m
2026-07-21 AAL680 CLT → PHL Jul 21, 23:05 UTCJul 22, 01:50 UTC2h 45m
2026-07-21 AAL2438 DFW → IAH Jul 21, 18:55 UTCJul 21, 21:10 UTC2h 15m
2026-07-21 AAL2438 DFW → IAH Jul 21, 15:05 UTCJul 21, 17:35 UTC2h 30m
2026-07-21 AAL2729 - Jul 21, 10:15 UTCJul 21, 13:30 UTC3h 15m
2026-07-21 AAL1272 MIA → BDL Jul 21, 01:45 UTCJul 21, 04:15 UTC2h 30m
2026-07-21 AAL1272 MIA → BDL Jul 21, 01:40 UTCJul 21, 04:10 UTC2h 30m
2026-07-20 AAL1124 - Jul 20, 23:50 UTCJul 21, 00:15 UTC25m
2026-07-20 AAL1124 - Jul 20, 21:50 UTCJul 20, 22:05 UTC15m
2026-07-20 AAL1124 BAQ → MIA Jul 20, 21:48 UTCJul 21, 00:13 UTC2h 25m
2026-07-20 AAL1125 - Jul 20, 19:50 UTCJul 20, 20:05 UTC15m
2026-07-20 AAL1125 - Jul 20, 15:10 UTCJul 20, 18:05 UTC2h 55m
2026-07-20 AAL2370 - Jul 20, 12:25 UTCJul 20, 12:50 UTC25m
2026-07-19 AAL1082 CLT → DFW Jul 19, 23:35 UTCJul 20, 00:00 UTC25m
2026-07-19 AAL1003 - Jul 19, 19:00 UTCJul 19, 21:20 UTC2h 20m
2026-07-19 AAL318 - Jul 19, 14:40 UTCJul 19, 17:00 UTC2h 20m
2026-07-19 AAL318 MIA → SKB Jul 19, 14:39 UTCJul 19, 17:17 UTC2h 38m
2026-07-19 AAL1604 - Jul 19, 10:15 UTCJul 19, 13:15 UTC3h 0m
2026-07-19 AAL2441 - Jul 19, 01:35 UTCJul 19, 03:50 UTC2h 15m
2026-07-19 AAL2441 CLT → SAT Jul 19, 01:34 UTCJul 19, 03:50 UTC2h 16m
2026-07-18 AAL336 DFW → PHX Jul 18, 21:05 UTCJul 18, 23:45 UTC2h 40m
2026-07-18 AAL336 DFW → PHX Jul 18, 20:06 UTCJul 18, 23:42 UTC3h 36m
2026-07-18 AAL323 - Jul 18, 14:55 UTCJul 18, 17:40 UTC2h 45m
2026-07-18 AAL323 CLT → CUR Jul 18, 14:52 UTCJul 18, 18:35 UTC3h 43m
2026-07-18 AAL2420 - Jul 18, 10:55 UTCJul 18, 11:25 UTC30m
2026-07-18 AAL3178 - Jul 18, 03:25 UTCJul 18, 03:55 UTC30m
2026-07-18 AAL3178 CLT → RDU Jul 18, 03:25 UTCJul 18, 03:55 UTC30m
2026-07-18 AAL1614 - Jul 18, 00:15 UTCJul 18, 01:34 UTC1h 20m

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 N935AN page for operator, model, and routing details .

Mode-S ACF849 frequently asked

What is Mode-S code ACF849?
ACF849 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N935AN.
Where is Mode-S ACF849 registered?
Mode-S code ACF849 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 ACF849 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF849, octal 53174111, decimal 11,335,753.
What flights does ACF849 operate?
Mode-S ACF849 has broadcast 20 distinct callsigns, including AAL1609, AAL2925, AAL1478, AAL2731, AAL1029.