Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACFD2C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N936NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ACFD2C
Octal
53176454
Decimal
11,337,004
Country
US
Tail
N936NN
Type
B738
Broadcasting now · callsign AAL1971 · 35,000 ft
Flights observed
549
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Current position

ACFD2C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ACFD2C 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
AAL1346 American Airlines 7 2026-06-12
AAL2664 American Airlines 6 2026-05-16
AAL1610 - 6 2026-07-16
AAL903 American Airlines 5 2026-05-21
AAL436 American Airlines 5 2026-06-23
AAL2271 - 5 2026-07-14
AAL2972 American Airlines 4 2026-04-17
AAL2712 American Airlines 4 2026-05-06
AAL2523 - 4 2026-06-28
AAL2490 American Airlines 4 2026-06-07
AAL2427 American Airlines 4 2026-06-13
AAL2139 - 4 2026-07-09
AAL1533 - 4 2026-07-16
AAL1320 American Airlines 4 2026-05-08
AAL874 - 3 2026-07-15
AAL867 American Airlines 3 2026-07-26
AAL595 American Airlines 3 2026-04-26
AAL486 American Airlines 3 2026-05-11
AAL444 - 3 2026-07-02
AAL3298 American Airlines 3 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1894 RDU → CLT Jul 26, 19:40 UTCJul 26, 21:45 UTC2h 5m
2026-07-26 AAL1279 MSY → PHX Jul 26, 16:15 UTCJul 26, 18:15 UTC2h 0m
2026-07-26 AAL1279 MSY → PHX Jul 26, 13:05 UTCJul 26, 15:05 UTC2h 0m
2026-07-26 AAL867 PHL → FLL Jul 26, 11:10 UTCJul 26, 11:50 UTC40m
2026-07-26 AAL867 PHL → FLL Jul 26, 11:05 UTCJul 26, 11:49 UTC44m
2026-07-26 AAL1514 LAS → AUS Jul 26, 02:15 UTCJul 26, 02:55 UTC40m
2026-07-25 AAL2239 DFW → SFO Jul 25, 21:20 UTCJul 26, 00:05 UTC2h 45m
2026-07-25 AAL2239 DFW → SFO Jul 25, 21:19 UTCJul 26, 00:05 UTC2h 46m
2026-07-25 AAL2239 DFW → SFO Jul 25, 17:40 UTCJul 25, 20:05 UTC2h 25m
2026-07-25 AAL2653 FAT → DFW Jul 25, 12:55 UTCJul 25, 15:45 UTC2h 50m
2026-07-25 AAL3091 CLT → LGA Jul 25, 03:15 UTCJul 25, 06:00 UTC2h 45m
2026-07-24 AAL1438 BOS → DFW Jul 24, 22:10 UTCJul 25, 01:25 UTC3h 15m
2026-07-24 AAL1438 BOS → DFW Jul 24, 17:35 UTCJul 24, 20:30 UTC2h 55m
2026-07-24 AAL2234 JFK → DFW Jul 24, 12:55 UTCJul 24, 16:00 UTC3h 5m
2026-07-23 AAL1202 BOS → AUS Jul 23, 21:35 UTCJul 24, 00:00 UTC2h 25m
2026-07-23 AAL1138 IND → PHL Jul 23, 19:20 UTCJul 23, 19:50 UTC30m
2026-07-23 AAL1138 IND → PHL Jul 23, 15:20 UTCJul 23, 15:40 UTC20m
2026-07-23 AAL3227 PHX → SFO Jul 23, 11:04 UTCJul 23, 12:45 UTC1h 41m
2026-07-22 AAL3227 PHX → SFO Jul 22, 23:35 UTCJul 23, 12:50 UTC13h 15m
2026-07-22 AAL1028 AUA → MIA Jul 22, 18:30 UTCJul 22, 20:55 UTC2h 25m
2026-07-22 AAL1028 AUA → MIA Jul 22, 16:40 UTCJul 22, 17:00 UTC20m
2026-07-22 AAL1028 AUA → MIA Jul 22, 14:40 UTCJul 22, 15:05 UTC25m
2026-07-22 AAL1604 SAT → MIA Jul 22, 11:10 UTCJul 22, 13:00 UTC1h 50m
2026-07-22 AAL2441 CLT → SAT Jul 22, 00:55 UTCJul 22, 03:10 UTC2h 15m
2026-07-21 AAL2853 - Jul 21, 19:05 UTCJul 21, 20:50 UTC1h 45m
2026-07-21 AAL2853 - Jul 21, 15:40 UTCJul 21, 17:30 UTC1h 50m
2026-07-21 AAL1119 SLP → DFW Jul 21, 11:35 UTCJul 21, 14:05 UTC2h 30m
2026-07-21 AAL3097 DFW → SAT Jul 21, 03:10 UTCJul 21, 03:45 UTC35m
2026-07-20 AAL1608 LGA → DFW Jul 20, 21:20 UTCJul 21, 00:15 UTC2h 54m
2026-07-20 AAL2805 LAS → PHL Jul 20, 17:10 UTCJul 20, 19:35 UTC2h 25m
2026-07-20 AAL2805 LAS → PHL Jul 20, 13:20 UTCJul 20, 15:40 UTC2h 20m
2026-07-20 AAL1060 - Jul 20, 00:15 UTCJul 20, 01:35 UTC1h 20m
2026-07-20 AAL1060 CLT → LGA Jul 20, 00:13 UTCJul 20, 01:32 UTC1h 19m
2026-07-19 AAL898 - Jul 19, 18:55 UTCJul 19, 22:10 UTC3h 15m
2026-07-19 AAL898 LIR → CLT Jul 19, 18:37 UTCJul 19, 22:10 UTC3h 33m
2026-07-19 AAL1377 MIA → LIR Jul 19, 14:35 UTCJul 19, 15:00 UTC25m
2026-07-19 AAL1377 MIA → LIR Jul 19, 14:30 UTCJul 19, 17:02 UTC2h 32m
2026-07-19 AAL1342 - Jul 19, 10:50 UTCJul 19, 12:40 UTC1h 50m
2026-07-19 AAL2833 - Jul 19, 01:35 UTCJul 19, 03:20 UTC1h 45m
2026-07-18 AAL454 - Jul 18, 22:05 UTCJul 18, 23:50 UTC1h 45m
2026-07-18 AAL313 - Jul 18, 18:35 UTCJul 18, 20:00 UTC1h 25m
2026-07-18 AAL313 MIA → XPL Jul 18, 18:35 UTCJul 18, 20:37 UTC2h 2m
2026-07-18 AAL1173 ORD → PIT Jul 18, 15:10 UTCJul 18, 17:15 UTC2h 5m
2026-07-18 AAL491 MIA → DCA Jul 18, 10:35 UTCJul 18, 12:45 UTC2h 10m
2026-07-18 AAL491 MIA → DCA Jul 18, 10:35 UTCJul 18, 12:45 UTC2h 10m
2026-07-18 AAL1181 ORD → BOS Jul 18, 00:35 UTCJul 18, 02:50 UTC2h 16m
2026-07-17 AAL3309 BOS → PHL Jul 17, 21:50 UTCJul 17, 22:49 UTC1h 0m
2026-07-17 AAL2735 LGA → DFW Jul 17, 17:25 UTCJul 17, 20:00 UTC2h 35m
2026-07-17 AAL2735 LGA → DFW Jul 17, 13:15 UTCJul 17, 15:40 UTC2h 25m
2026-07-16 AAL2303 - Jul 16, 20:55 UTCJul 16, 22:55 UTC2h 0m

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 N936NN page for operator, model, and routing details .

Mode-S ACFD2C frequently asked

What is Mode-S code ACFD2C?
ACFD2C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N936NN.
Where is Mode-S ACFD2C registered?
Mode-S code ACFD2C 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 ACFD2C broadcasting right now?
Yes. Mode-S ACFD2C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACFD2C, octal 53176454, decimal 11,337,004.
What flights does ACFD2C operate?
Mode-S ACFD2C has broadcast 20 distinct callsigns, including AAL1346, AAL2664, AAL1610, AAL903, AAL436.