Apparatus

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sensors Mode-S transponder

A44DDC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N377AR · BOEING 737-800 · operated by WELLS FARGO TRUST CO NA TRUSTEE

Hex
A44DDC
Octal
51046734
Decimal
10,767,836
Country
US
Tail
N377AR
Type
B738
No current signal · last broadcast 4h ago
Flights observed
56
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A44DDC.

Country allocation

The ICAO 24-bit address A44DDC 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
AMX838 Aeroméxico 4 2026-05-13
AMX821 Aeroméxico 3 2026-05-18
AMX861 Aeroméxico 2 2026-05-28
AMX823 Aeroméxico 2 2026-04-28
AMX596 Aeroméxico 2 2026-05-24
AMX591 Aeroméxico 2 2026-05-22
AMX500 Aeroméxico 2 2026-05-22
AMX105 Aeroméxico 2 2026-04-24
AMX102 Aeroméxico 2 2026-04-24
AMX9448 Aeroméxico 1 2026-04-22
AMX858 Aeroméxico 1 2026-05-27
AMX825 Aeroméxico 1 2026-05-25
AMX813 Aeroméxico 1 2026-05-26
AMX810 Aeroméxico 1 2026-05-26
AMX803 Aeroméxico 1 2026-05-05
AMX800 Aeroméxico 1 2026-05-05
AMX551 Aeroméxico 1 2026-04-20
AMX531 Aeroméxico 1 2026-05-04
AMX512 Aeroméxico 1 2026-05-04
AMX494 Aeroméxico 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AMX494 MEX → SEA May 29, 21:40 UTCMay 30, 02:45 UTC5h 5m
2026-05-29 AMX411 MIA → CUN May 29, 12:15 UTCMay 29, 16:40 UTC4h 25m
2026-05-28 AMX410 MEX → EWR May 28, 21:40 UTCMay 29, 02:10 UTC4h 30m
2026-05-28 AMX225 GDL → MEX May 28, 16:20 UTCMay 28, 19:35 UTC3h 15m
2026-05-28 AMX861 VER → MEX May 28, 01:05 UTCMay 28, 01:45 UTC40m
2026-05-27 AMX858 MEX → VER May 27, 23:00 UTCMay 27, 23:35 UTC35m
2026-05-27 AMX861 VER → MEX May 27, 02:04 UTCMay 27, 02:54 UTC50m
2026-05-26 AMX1539 SLP → MEX May 26, 19:45 UTCMay 26, 20:00 UTC15m
2026-05-26 AMX1534 MEX → SLP May 26, 16:24 UTCMay 26, 16:40 UTC15m
2026-05-26 AMX813 VSA → MEX May 26, 04:20 UTCMay 26, 05:20 UTC1h 0m
2026-05-26 AMX810 MEX → VSA May 26, 02:04 UTCMay 26, 02:44 UTC40m
2026-05-25 AMX385 SJD → MEX May 25, 23:19 UTCMay 25, 23:40 UTC20m
2026-05-25 AMX382 MEX → SJD May 25, 18:55 UTCMay 25, 19:10 UTC15m
2026-05-25 AMX825 MID → MEX May 25, 12:45 UTCMay 25, 16:45 UTC4h 0m
2026-05-24 AMX596 NLU → CUN May 24, 20:40 UTCMay 24, 21:35 UTC55m
2026-05-22 AMX591 CUN → NLU May 22, 16:00 UTCMay 22, 17:55 UTC1h 55m
2026-05-22 AMX500 MEX → CUN May 22, 13:00 UTCMay 22, 14:50 UTC1h 50m
2026-05-21 AMX353 MZT → MEX May 21, 18:50 UTCMay 21, 23:15 UTC4h 25m
2026-05-21 AMX333 PVR → MEX May 21, 16:01 UTCMay 21, 16:20 UTC20m
2026-05-21 AMX330 MEX → PVR May 21, 13:10 UTCMay 21, 13:25 UTC15m
2026-05-19 AMX425 MIA → MEX May 19, 11:15 UTCMay 19, 14:20 UTC3h 5m
2026-05-19 AMX428 MEX → MIA May 19, 01:55 UTCMay 19, 04:30 UTC2h 35m
2026-05-18 AMX821 MID → MEX May 18, 13:10 UTCMay 18, 13:40 UTC30m
2026-05-13 AMX838 MEX → MID May 13, 03:40 UTCMay 13, 04:30 UTC50m
2026-05-12 AMX233 GDL → MEX May 12, 17:50 UTCMay 12, 21:01 UTC3h 10m
2026-05-12 AMX312 SXE → MEB May 12, 12:20 UTCMay 12, 16:00 UTC3h 40m
2026-05-11 AMX142 MEX → CUU May 11, 19:15 UTCMay 11, 20:25 UTC1h 10m
2026-05-10 AMX821 MID → MEX May 10, 13:14 UTCMay 10, 13:49 UTC35m
2026-05-06 AMX838 MEX → MID May 6, 03:05 UTCMay 6, 03:50 UTC45m
2026-05-05 AMX165 CUL → MEX May 5, 23:15 UTCMay 5, 23:25 UTC10m
2026-05-05 AMX164 MEX → CUL May 5, 19:25 UTCMay 5, 19:35 UTC10m
2026-05-05 AMX803 VSA → MEX May 5, 16:35 UTCMay 5, 17:30 UTC55m
2026-05-05 AMX800 MEX → VSA May 5, 13:50 UTCMay 5, 14:35 UTC45m
2026-05-05 AMX1457 ZIH → MEX May 5, 01:30 UTCMay 5, 02:10 UTC40m
2026-05-04 AMX1456 MEX → ZIH May 4, 23:15 UTCMay 4, 23:35 UTC20m
2026-05-04 AMX531 CUN → MEX May 4, 20:20 UTCMay 4, 21:15 UTC55m
2026-05-04 AMX512 MEX → CUN May 4, 16:00 UTCMay 4, 17:50 UTC1h 50m
2026-05-04 AMX821 MID → MEX May 4, 12:35 UTCMay 4, 13:30 UTC55m
2026-04-29 AMX838 MEX → MID Apr 29, 02:50 UTCApr 29, 03:34 UTC45m
2026-04-28 AMX823 MID → MEX Apr 28, 14:00 UTCApr 28, 14:50 UTC50m
2026-04-25 AMX838 MEX → MID Apr 25, 03:45 UTCApr 25, 04:35 UTC50m
2026-04-24 AMX105 TRC → MEX Apr 24, 20:30 UTCApr 24, 20:40 UTC10m
2026-04-24 AMX102 MEX → TRC Apr 24, 16:30 UTCApr 24, 19:40 UTC3h 10m
2026-04-24 AMX823 MID → MEX Apr 24, 03:35 UTCApr 24, 15:05 UTC11h 30m
2026-04-24 AMX137 BJX → MEX Apr 24, 00:55 UTCApr 24, 01:15 UTC20m
2026-04-23 AMX132 MEX → BJX Apr 23, 22:25 UTCApr 23, 22:35 UTC10m
2026-04-23 AMX105 TRC → MEX Apr 23, 20:40 UTCApr 23, 20:50 UTC10m
2026-04-23 AMX102 MEX → TRC Apr 23, 17:05 UTCApr 23, 19:55 UTC2h 50m
2026-04-22 AMX9448 QRO → MEX Apr 22, 05:35 UTCApr 22, 06:45 UTC1h 10m
2026-04-21 AMX322 MEX → TGZ Apr 21, 04:20 UTCApr 21, 05:00 UTC40m

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 N377AR page for operator, model, and routing details .

Mode-S A44DDC frequently asked

What is Mode-S code A44DDC?
A44DDC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N377AR.
Where is Mode-S A44DDC registered?
Mode-S code A44DDC 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 A44DDC broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A44DDC, octal 51046734, decimal 10,767,836.
What flights does A44DDC operate?
Mode-S A44DDC has broadcast 20 distinct callsigns, including AMX838, AMX821, AMX861, AMX823, AMX596.