Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA57DF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N766AN · BOEING 777-200 · operated by AMERICAN AIRLINES INC

Hex
AA57DF
Octal
52453737
Decimal
11,163,615
Country
US
Tail
N766AN
Type
B772
No current signal · last broadcast Jul 26, 15:10 UTC
Flights observed
264
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:10 UTC

Last known position

Most recent position reported by Mode-S AA57DF.

Country allocation

The ICAO 24-bit address AA57DF 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
AAL113 - 12 2026-07-12
AAL931 - 11 2026-07-01
AAL53 American Airlines 11 2026-07-26
AAL908 - 10 2026-07-17
AAL900 - 9 2026-07-01
AAL907 - 8 2026-07-16
AAL69 - 8 2026-07-13
AAL749 - 7 2026-07-18
AAL733 American Airlines 7 2026-05-27
AAL720 - 7 2026-06-21
AAL56 American Airlines 7 2026-05-20
AAL326 American Airlines 7 2026-07-18
AAL112 - 7 2026-07-13
AAL904 - 6 2026-07-09
AAL787 American Airlines 6 2026-07-21
AAL57 American Airlines 6 2026-05-20
AAL786 American Airlines 5 2026-07-21
AAL68 - 5 2026-07-17
AAL333 American Airlines 5 2026-07-19
AAL221 American Airlines 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL53 FCO → MIA Jul 26, 12:30 UTCJul 26, 15:10 UTC2h 40m
2026-07-25 AAL240 DFW → FCO Jul 25, 23:45 UTCJul 26, 09:55 UTC10h 11m
2026-07-24 AAL221 AMS → DFW Jul 24, 09:10 UTCJul 24, 19:00 UTC9h 50m
2026-07-23 AAL220 DFW → AMS Jul 23, 22:00 UTCJul 24, 06:45 UTC8h 45m
2026-07-23 AAL221 AMS → DFW Jul 23, 09:35 UTCJul 23, 11:05 UTC1h 30m
2026-07-23 AAL221 AMS → DFW Jul 23, 09:30 UTCJul 23, 18:57 UTC9h 27m
2026-07-22 AAL220 DFW → AMS Jul 22, 21:49 UTCJul 23, 06:36 UTC8h 47m
2026-07-22 AAL220 DFW → AMS Jul 22, 21:50 UTCJul 22, 23:45 UTC1h 55m
2026-07-22 AAL49 CDG → DFW Jul 22, 10:20 UTCJul 22, 18:25 UTC8h 5m
2026-07-22 AAL49 CDG → DFW Jul 22, 08:22 UTCJul 22, 18:22 UTC10h 0m
2026-07-21 AAL786 SLC → PHL Jul 21, 21:55 UTCJul 22, 05:25 UTC7h 30m
2026-07-21 AAL787 CDG → CLT Jul 21, 09:15 UTCJul 21, 15:45 UTC6h 30m
2026-07-21 AAL787 CDG → CLT Jul 21, 09:13 UTCJul 21, 17:34 UTC8h 21m
2026-07-20 AAL42 ORD → LIR Jul 20, 22:15 UTCJul 21, 04:50 UTC6h 35m
2026-07-20 AAL42 ORD → LIR Jul 20, 22:15 UTCJul 21, 04:50 UTC6h 34m
2026-07-19 AAL333 ATH → JFK Jul 19, 13:30 UTCJul 19, 23:40 UTC10h 10m
2026-07-18 AAL326 PHL → CHS Jul 18, 23:05 UTCJul 19, 08:55 UTC9h 50m
2026-07-18 AAL326 PHL → CHS Jul 18, 23:00 UTCJul 19, 08:53 UTC9h 53m
2026-07-18 AAL749 - Jul 18, 11:40 UTCJul 18, 12:55 UTC1h 15m
2026-07-18 AAL749 MAD → CLT Jul 18, 11:36 UTCJul 18, 19:51 UTC8h 15m
2026-07-17 AAL68 - Jul 17, 23:50 UTCJul 18, 08:00 UTC8h 11m
2026-07-17 AAL908 - Jul 17, 01:45 UTCJul 17, 03:30 UTC1h 45m
2026-07-17 AAL908 EZE → MIA Jul 17, 01:44 UTCJul 17, 10:20 UTC8h 36m
2026-07-16 AAL907 - Jul 16, 03:20 UTCJul 16, 11:30 UTC8h 10m
2026-07-15 AAL488 - Jul 15, 22:25 UTCJul 15, 23:55 UTC1h 30m
2026-07-15 AAL787 - Jul 15, 09:25 UTCJul 15, 17:55 UTC8h 30m
2026-07-15 AAL787 CDG → CLT Jul 15, 09:24 UTCJul 15, 17:52 UTC8h 28m
2026-07-14 AAL42 JFK → CDG Jul 14, 23:00 UTCJul 15, 05:50 UTC6h 50m
2026-07-14 AAL67 BCN → JFK Jul 14, 11:55 UTCJul 14, 19:25 UTC7h 30m
2026-07-13 AAL112 - Jul 13, 23:30 UTCJul 14, 08:05 UTC8h 35m
2026-07-13 AAL69 - Jul 13, 11:15 UTCJul 13, 12:30 UTC1h 15m
2026-07-13 AAL69 MAD → MIA Jul 13, 11:10 UTCJul 13, 19:45 UTC8h 35m
2026-07-12 AAL68 - Jul 12, 23:30 UTCJul 13, 07:45 UTC8h 15m
2026-07-12 AAL113 BCN → MIA Jul 12, 10:40 UTCJul 12, 19:40 UTC9h 0m
2026-07-12 AAL113 - Jul 12, 10:40 UTCJul 12, 19:40 UTC9h 0m
2026-07-11 AAL112 - Jul 11, 23:35 UTCJul 12, 08:05 UTC8h 30m
2026-07-11 AAL112 MIA → BCN Jul 11, 23:30 UTCJul 12, 08:05 UTC8h 35m
2026-07-11 AAL908 - Jul 11, 01:30 UTCJul 11, 10:40 UTC9h 10m
2026-07-10 AAL907 - Jul 10, 03:55 UTCJul 10, 11:45 UTC7h 50m
2026-07-10 AAL907 MIA → EZE Jul 10, 03:54 UTCJul 10, 11:55 UTC8h 1m
2026-07-09 AAL3013 - Jul 9, 21:10 UTCJul 10, 01:35 UTC4h 25m
2026-07-09 AAL3288 PHX → GJT Jul 9, 14:30 UTCJul 9, 19:05 UTC4h 35m
2026-07-09 AAL3288 PHX → GJT Jul 9, 14:26 UTCJul 9, 19:05 UTC4h 39m
2026-07-09 AAL904 - Jul 9, 01:20 UTCJul 9, 01:30 UTC10m
2026-07-09 AAL904 GIG → MIA Jul 9, 01:20 UTCJul 9, 09:42 UTC8h 22m
2026-07-08 AAL905 - Jul 8, 05:10 UTCJul 8, 12:45 UTC7h 35m
2026-07-06 AAL2206 DFW → MIA Jul 6, 23:55 UTCJul 7, 02:20 UTC2h 25m
2026-07-06 AAL2206 DFW → MIA Jul 6, 23:52 UTCJul 7, 02:20 UTC2h 28m
2026-07-06 AAL49 - Jul 6, 08:40 UTCJul 6, 18:20 UTC9h 40m
2026-07-05 AAL786 - Jul 5, 22:45 UTCJul 6, 05:55 UTC7h 10m

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 N766AN page for operator, model, and routing details .

Mode-S AA57DF frequently asked

What is Mode-S code AA57DF?
AA57DF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N766AN.
Where is Mode-S AA57DF registered?
Mode-S code AA57DF 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 AA57DF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA57DF, octal 52453737, decimal 11,163,615.
What flights does AA57DF operate?
Mode-S AA57DF has broadcast 20 distinct callsigns, including AAL113, AAL931, AAL53, AAL908, AAL900.