Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACD1F6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N925NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ACD1F6
Octal
53150766
Decimal
11,325,942
Country
US
Tail
N925NN
Type
B738
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
543
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S ACD1F6.

Country allocation

The ICAO 24-bit address ACD1F6 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
AAL2438 American Airlines 7 2026-05-03
AAL2628 - 6 2026-07-10
AAL2338 American Airlines 6 2026-06-08
AAL874 - 5 2026-07-10
AAL2572 - 5 2026-07-03
AAL1089 - 5 2026-07-12
AAL1029 - 5 2026-07-15
AAL763 - 4 2026-06-24
AAL476 American Airlines 4 2026-06-03
AAL3126 American Airlines 4 2026-06-08
AAL3113 - 4 2026-07-21
AAL2477 - 4 2026-07-16
AAL2366 American Airlines 4 2026-06-05
AAL2013 American Airlines 4 2026-06-06
AAL1894 - 4 2026-06-30
AAL1827 - 4 2026-07-07
AAL1542 American Airlines 4 2026-04-14
AAL1113 - 4 2026-07-13
AAL814 - 3 2026-06-14
AAL598 American Airlines 3 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2837 DFW → SFO Jul 26, 18:30 UTCJul 26, 20:35 UTC2h 5m
2026-07-26 AAL2852 DFW → MBJ Jul 26, 14:35 UTCJul 26, 16:25 UTC1h 50m
2026-07-26 AAL2745 MIA → LGA Jul 26, 11:10 UTCJul 26, 13:00 UTC1h 50m
2026-07-26 AAL2745 MIA → LGA Jul 26, 11:07 UTCJul 26, 12:56 UTC1h 49m
2026-07-25 AAL2139 MCI → PHL Jul 25, 21:10 UTCJul 25, 22:55 UTC1h 45m
2026-07-25 AAL1414 LGA → RDU Jul 25, 17:05 UTCJul 25, 19:35 UTC2h 30m
2026-07-25 AAL1395 MSP → DFW Jul 25, 13:10 UTCJul 25, 15:00 UTC1h 50m
2026-07-25 AAL2806 DFW → MSP Jul 25, 00:20 UTCJul 25, 02:20 UTC2h 0m
2026-07-24 AAL1953 SMF → DFW Jul 24, 19:50 UTCJul 24, 22:50 UTC3h 0m
2026-07-24 AAL2812 DFW → ORD Jul 24, 16:55 UTCJul 24, 18:20 UTC1h 25m
2026-07-24 AAL2812 DFW → ORD Jul 24, 16:53 UTCJul 24, 18:19 UTC1h 26m
2026-07-24 AAL2133 LGA → DCA Jul 24, 13:45 UTCJul 24, 15:25 UTC1h 40m
2026-07-24 AAL1453 CLT → SLC Jul 24, 00:55 UTCJul 24, 02:35 UTC1h 40m
2026-07-23 AAL396 LGA → ORD Jul 23, 20:50 UTCJul 23, 22:40 UTC1h 50m
2026-07-23 AAL396 LGA → ORD Jul 23, 20:46 UTCJul 23, 22:39 UTC1h 53m
2026-07-23 AAL2490 LAX → DFW Jul 23, 16:30 UTCJul 23, 19:30 UTC3h 0m
2026-07-23 AAL2490 LAX → DFW Jul 23, 12:30 UTCJul 23, 15:05 UTC2h 35m
2026-07-22 AAL1060 CLT → LGA Jul 22, 22:05 UTCJul 22, 23:25 UTC1h 20m
2026-07-22 AAL1060 CLT → LGA Jul 22, 22:00 UTCJul 22, 23:18 UTC1h 18m
2026-07-22 AAL2052 CLT → ORD Jul 22, 17:30 UTCJul 22, 19:10 UTC1h 40m
2026-07-22 AAL2052 CLT → ORD Jul 22, 17:27 UTCJul 22, 19:06 UTC1h 39m
2026-07-22 AAL2052 CLT → ORD Jul 22, 14:20 UTCJul 22, 16:15 UTC1h 55m
2026-07-21 AAL1875 - Jul 21, 20:30 UTCJul 21, 22:10 UTC1h 40m
2026-07-21 AAL1875 - Jul 21, 17:35 UTCJul 21, 19:00 UTC1h 25m
2026-07-21 AAL2569 - Jul 21, 15:20 UTCJul 21, 16:05 UTC45m
2026-07-21 AAL2569 - Jul 21, 13:40 UTCJul 21, 14:05 UTC25m
2026-07-21 AAL3230 DFW → XNA Jul 21, 10:05 UTCJul 21, 11:20 UTC1h 15m
2026-07-21 AAL3113 - Jul 21, 02:35 UTCJul 21, 04:05 UTC1h 30m
2026-07-21 AAL3113 CLT → GRR Jul 21, 02:34 UTCJul 21, 04:04 UTC1h 30m
2026-07-20 AAL2731 BOS → ORD Jul 20, 23:50 UTCJul 21, 01:05 UTC1h 14m
2026-07-20 AAL2731 BOS → ORD Jul 20, 21:20 UTCJul 20, 22:45 UTC1h 25m
2026-07-19 AAL3131 DFW → DTW Jul 19, 23:30 UTCJul 20, 01:00 UTC1h 30m
2026-07-19 AAL3131 DFW → DTW Jul 19, 23:27 UTCJul 20, 01:07 UTC1h 40m
2026-07-19 AAL3302 MCO → LGA Jul 19, 18:50 UTCJul 19, 21:10 UTC2h 20m
2026-07-18 AAL1971 - Jul 18, 17:00 UTCJul 18, 20:15 UTC3h 15m
2026-07-18 AAL1752 - Jul 18, 12:20 UTCJul 18, 15:30 UTC3h 10m
2026-07-18 AAL1752 PHL → CUN Jul 18, 12:19 UTCJul 18, 15:44 UTC3h 25m
2026-07-18 AAL1752 PHL → PHL Jul 18, 12:10 UTCJul 18, 12:15 UTC5m
2026-07-18 AAL3247 BUR → PHX Jul 18, 00:39 UTCJul 18, 02:55 UTC2h 16m
2026-07-17 AAL3196 DCA → MSY Jul 17, 20:44 UTCJul 17, 23:05 UTC2h 20m
2026-07-17 AAL2960 - Jul 17, 17:44 UTCJul 17, 19:30 UTC1h 45m
2026-07-17 AAL2960 - Jul 17, 14:24 UTCJul 17, 16:10 UTC1h 45m
2026-07-17 AAL2043 - Jul 17, 11:20 UTCJul 17, 12:40 UTC1h 20m
2026-07-17 AAL1903 - Jul 17, 09:15 UTCJul 17, 09:45 UTC30m
2026-07-16 AAL2332 TPA → PHL Jul 16, 22:49 UTCJul 17, 02:50 UTC4h 0m
2026-07-16 AAL2477 SAN → PHX Jul 16, 20:00 UTCJul 16, 21:19 UTC1h 20m
2026-07-16 AAL2477 PHX → SAN Jul 16, 17:45 UTCJul 16, 18:40 UTC55m
2026-07-16 AAL1958 - Jul 16, 12:09 UTCJul 16, 15:40 UTC3h 30m
2026-07-15 AAL1540 - Jul 15, 23:40 UTCJul 16, 00:30 UTC50m
2026-07-15 AAL1540 CLT → CMH Jul 15, 23:37 UTCJul 16, 00:28 UTC51m

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 N925NN page for operator, model, and routing details .

Mode-S ACD1F6 frequently asked

What is Mode-S code ACD1F6?
ACD1F6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N925NN.
Where is Mode-S ACD1F6 registered?
Mode-S code ACD1F6 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 ACD1F6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACD1F6, octal 53150766, decimal 11,325,942.
What flights does ACD1F6 operate?
Mode-S ACD1F6 has broadcast 20 distinct callsigns, including AAL2438, AAL2628, AAL2338, AAL874, AAL2572.