Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1D44E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N217JC · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1D44E
Octal
50352116
Decimal
10,605,646
Country
US
Tail
N217JC
Type
B737
No current signal · last broadcast 1h ago
Flights observed
645
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A1D44E.

Country allocation

The ICAO 24-bit address A1D44E 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
SWA2699 Southwest Airlines 6 2026-05-12
SWA1677 - 6 2026-06-29
SWA4206 - 5 2026-07-03
SWA1723 Southwest Airlines 5 2026-05-27
SWA1418 Southwest Airlines 5 2026-04-18
SWA962 - 4 2026-07-03
SWA4265 - 4 2026-06-25
SWA342 - 4 2026-06-25
SWA3419 Southwest Airlines 4 2026-04-24
SWA2896 Southwest Airlines 4 2026-06-12
SWA2433 Southwest Airlines 4 2026-05-01
SWA2368 - 4 2026-04-13
SWA2335 Southwest Airlines 4 2026-05-05
SWA194 - 4 2026-06-21
SWA1035 Southwest Airlines 4 2026-06-13
SWA973 - 3 2026-07-07
SWA813 - 3 2026-06-29
SWA803 - 3 2026-06-26
SWA779 Southwest Airlines 3 2026-05-26
SWA700 Southwest Airlines 3 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA983 - Jul 14, 02:30 UTCJul 14, 04:35 UTC2h 5m
2026-07-13 SWA4294 RSW → BWI Jul 13, 23:05 UTCJul 14, 01:25 UTC2h 20m
2026-07-13 SWA4569 - Jul 13, 19:40 UTCJul 13, 22:00 UTC2h 20m
2026-07-13 SWA1345 BNA → BWI Jul 13, 17:20 UTCJul 13, 18:45 UTC1h 25m
2026-07-13 SWA1426 DCA → BNA Jul 13, 14:50 UTCJul 13, 16:05 UTC1h 15m
2026-07-13 SWA1426 PVD → DCA Jul 13, 12:35 UTCJul 13, 13:45 UTC1h 10m
2026-07-12 SWA4898 - Jul 12, 23:25 UTCJul 13, 01:50 UTC2h 25m
2026-07-12 SWA3579 - Jul 12, 20:35 UTCJul 12, 22:10 UTC1h 35m
2026-07-12 SWA3579 RIC → MCO Jul 12, 20:30 UTCJul 12, 22:08 UTC1h 39m
2026-07-12 SWA3579 - Jul 12, 17:15 UTCJul 12, 19:15 UTC2h 0m
2026-07-12 SWA2667 MSY → MDW Jul 12, 13:55 UTCJul 12, 15:45 UTC1h 50m
2026-07-12 SWA2667 MCO → MSY Jul 12, 11:25 UTCJul 12, 12:40 UTC1h 15m
2026-07-11 SWA1803 STL → MSY Jul 11, 22:30 UTCJul 12, 00:30 UTC2h 0m
2026-07-11 SWA1803 STL → MSY Jul 11, 21:40 UTCJul 11, 21:55 UTC15m
2026-07-11 SWA1804 - Jul 11, 20:00 UTCJul 11, 20:10 UTC10m
2026-07-11 SWA1804 - Jul 11, 16:10 UTCJul 11, 18:05 UTC1h 55m
2026-07-11 SWA1804 BWI → AUA Jul 11, 16:09 UTCJul 11, 20:09 UTC4h 0m
2026-07-11 SWA3678 - Jul 11, 12:20 UTCJul 11, 14:20 UTC2h 0m
2026-07-11 SWA3678 TPA → BWI Jul 11, 12:19 UTCJul 11, 14:20 UTC2h 2m
2026-07-11 SWA4219 - Jul 11, 09:45 UTCJul 11, 11:20 UTC1h 35m
2026-07-11 SWA671 - Jul 11, 02:25 UTCJul 11, 03:01 UTC35m
2026-07-10 SWA261 AUS → BNA Jul 10, 23:25 UTCJul 11, 01:05 UTC1h 40m
2026-07-10 SWA261 AUS → BNA Jul 10, 23:22 UTCJul 11, 01:01 UTC1h 39m
2026-07-10 SWA1784 - Jul 10, 20:55 UTCJul 10, 22:25 UTC1h 30m
2026-07-10 SWA295 - Jul 10, 18:20 UTCJul 10, 19:55 UTC1h 35m
2026-07-10 SWA295 - Jul 10, 15:55 UTCJul 10, 16:50 UTC55m
2026-07-10 SWA295 - Jul 10, 13:40 UTCJul 10, 15:20 UTC1h 40m
2026-07-10 SWA1425 DCA → BNA Jul 10, 10:55 UTCJul 10, 12:30 UTC1h 35m
2026-07-10 SWA1425 DCA → BNA Jul 10, 10:51 UTCJul 10, 12:20 UTC1h 29m
2026-07-10 SWA4888 - Jul 10, 01:10 UTCJul 10, 03:50 UTC2h 40m
2026-07-09 SWA109 - Jul 9, 22:05 UTCJul 9, 23:20 UTC1h 15m
2026-07-09 SWA109 PVR → HOU Jul 9, 21:21 UTCJul 9, 23:21 UTC2h 0m
2026-07-09 SWA514 DEN → PVR Jul 9, 17:30 UTCJul 9, 20:13 UTC2h 43m
2026-07-09 SWA514 - Jul 9, 17:30 UTCJul 9, 18:50 UTC1h 20m
2026-07-09 SWA116 PHX → DEN Jul 9, 14:45 UTCJul 9, 16:05 UTC1h 20m
2026-07-09 SWA116 - Jul 9, 14:45 UTCJul 9, 16:05 UTC1h 20m
2026-07-09 SWA116 - Jul 9, 12:30 UTCJul 9, 13:25 UTC55m
2026-07-09 SWA2625 - Jul 9, 04:00 UTCJul 9, 04:40 UTC40m
2026-07-09 SWA2625 SEA → LAS Jul 9, 00:20 UTCJul 9, 02:20 UTC2h 0m
2026-07-08 SWA389 AUS → SEA Jul 8, 19:05 UTCJul 8, 23:00 UTC3h 55m
2026-07-08 SWA269 - Jul 8, 15:15 UTCJul 8, 17:30 UTC2h 15m
2026-07-08 SWA4093 - Jul 8, 13:00 UTCJul 8, 13:50 UTC50m
2026-07-08 SWA4276 - Jul 8, 10:45 UTCJul 8, 11:50 UTC1h 5m
2026-07-08 SWA2453 - Jul 8, 03:00 UTCJul 8, 03:35 UTC35m
2026-07-08 SWA792 - Jul 8, 01:05 UTCJul 8, 02:15 UTC1h 10m
2026-07-08 SWA792 CLE → STL Jul 8, 01:00 UTCJul 8, 02:11 UTC1h 11m
2026-07-07 SWA30 - Jul 7, 20:35 UTCJul 8, 00:15 UTC3h 40m
2026-07-07 SWA30 LAS → CLE Jul 7, 20:34 UTCJul 8, 00:15 UTC3h 42m
2026-07-07 SWA9 - Jul 7, 18:30 UTCJul 7, 19:15 UTC45m
2026-07-07 SWA973 LAS → LAX Jul 7, 16:05 UTCJul 7, 16:50 UTC45m

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 N217JC page for operator, model, and routing details .

Mode-S A1D44E frequently asked

What is Mode-S code A1D44E?
A1D44E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N217JC.
Where is Mode-S A1D44E registered?
Mode-S code A1D44E 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 A1D44E broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D44E, octal 50352116, decimal 10,605,646.
What flights does A1D44E operate?
Mode-S A1D44E has broadcast 20 distinct callsigns, including SWA2699, SWA1677, SWA4206, SWA1723, SWA1418.