Apparatus

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sensors Mode-S transponder

ABD204

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8606C · BOEING 737-800 · operated by UMB BANK NA TRUSTEE

Hex
ABD204
Octal
52751004
Decimal
11,260,420
Country
US
Tail
N8606C
Type
B738
Broadcasting now · callsign SWA4668 · 40,025 ft
Flights observed
744
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Current position

ABD204 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABD204 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
SWA3354 - 5 2026-06-27
SWA212 Southwest Airlines 5 2026-07-19
SWA878 Southwest Airlines 4 2026-05-20
SWA725 Southwest Airlines 4 2026-06-04
SWA446 Southwest Airlines 4 2026-06-06
SWA3414 Southwest Airlines 4 2026-04-17
SWA3011 Southwest Airlines 4 2026-06-03
SWA2840 Southwest Airlines 4 2026-06-03
SWA2744 Southwest Airlines 4 2026-05-18
SWA2393 - 4 2026-07-15
SWA232 Southwest Airlines 4 2026-07-21
SWA2104 - 4 2026-07-07
SWA1161 Southwest Airlines 4 2026-04-17
SWA967 - 3 2026-07-16
SWA9008 - 3 2026-06-28
SWA843 Southwest Airlines 3 2026-05-19
SWA810 Southwest Airlines 3 2026-07-25
SWA713 Southwest Airlines 3 2026-06-16
SWA609 - 3 2026-06-30
SWA575 Southwest Airlines 3 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA906 BWI → MBJ Jul 26, 17:20 UTCJul 26, 23:00 UTC5h 40m
2026-07-26 SWA2612 SJC → BUR Jul 26, 13:30 UTCJul 26, 15:20 UTC1h 50m
2026-07-26 SWA2612 SJC → BUR Jul 26, 13:30 UTCJul 26, 15:17 UTC1h 48m
2026-07-26 SWA4358 BUR → OAK Jul 26, 10:10 UTCJul 26, 12:00 UTC1h 50m
2026-07-26 SWA4358 BUR → OAK Jul 26, 10:08 UTCJul 26, 11:58 UTC1h 50m
2026-07-26 SWA1118 STL → DCA Jul 26, 01:45 UTCJul 26, 03:25 UTC1h 40m
2026-07-25 SWA810 LIR → BWI Jul 25, 23:40 UTCJul 25, 23:55 UTC15m
2026-07-25 SWA810 LIR → BWI Jul 25, 19:15 UTCJul 25, 23:21 UTC4h 6m
2026-07-25 SWA810 LIR → BWI Jul 25, 19:15 UTCJul 25, 23:48 UTC4h 33m
2026-07-25 SWA809 - Jul 25, 13:30 UTCJul 25, 17:05 UTC3h 35m
2026-07-25 SWA809 BWI → LIR Jul 25, 13:29 UTCJul 25, 17:49 UTC4h 20m
2026-07-25 SWA2113 PDX → SMF Jul 25, 09:45 UTCJul 25, 10:55 UTC1h 10m
2026-07-25 SWA4591 SBA → OAK Jul 25, 01:25 UTCJul 25, 03:30 UTC2h 5m
2026-07-24 SWA787 CMH → BWI Jul 24, 22:55 UTCJul 25, 00:20 UTC1h 25m
2026-07-24 SWA787 CMH → BWI Jul 24, 22:55 UTCJul 25, 00:15 UTC1h 20m
2026-07-24 SWA570 MDW → MSP Jul 24, 19:45 UTCJul 24, 21:00 UTC1h 15m
2026-07-24 SWA570 MDW → MSP Jul 24, 19:40 UTCJul 24, 21:41 UTC2h 1m
2026-07-24 SWA3739 BWI → CVG Jul 24, 17:20 UTCJul 24, 18:20 UTC1h 0m
2026-07-24 SWA2957 MSY → SAN Jul 24, 14:50 UTCJul 24, 15:45 UTC55m
2026-07-24 SWA4231 ELP → HOU Jul 24, 12:15 UTCJul 24, 13:20 UTC1h 5m
2026-07-24 SWA2429 BUR → SFO Jul 24, 05:45 UTCJul 24, 06:50 UTC1h 5m
2026-07-24 SWA2429 BUR → SFO Jul 24, 05:44 UTCJul 24, 06:43 UTC1h 0m
2026-07-23 SWA188 BWI → FLL Jul 23, 23:20 UTCJul 24, 03:05 UTC3h 45m
2026-07-23 SWA1162 SAT → HOU Jul 23, 20:55 UTCJul 23, 21:45 UTC50m
2026-07-23 SWA1162 SAT → HOU Jul 23, 20:51 UTCJul 23, 21:45 UTC55m
2026-07-23 SWA3887 MDW → PHL Jul 23, 16:30 UTCJul 23, 19:55 UTC3h 25m
2026-07-23 SWA3447 - Jul 23, 13:55 UTCJul 23, 14:45 UTC50m
2026-07-23 SWA3447 SAN → PHX Jul 23, 13:52 UTCJul 23, 14:40 UTC48m
2026-07-23 SWA3838 PHX → OAK Jul 23, 04:30 UTCJul 23, 05:15 UTC45m
2026-07-23 SWA3838 PHX → OAK Jul 23, 04:29 UTCJul 23, 05:12 UTC43m
2026-07-23 SWA3333 MAF → AUS Jul 23, 02:15 UTCJul 23, 03:10 UTC55m
2026-07-23 SWA3333 MAF → AUS Jul 23, 02:10 UTCJul 23, 03:03 UTC53m
2026-07-22 SWA3333 MAF → AUS Jul 22, 23:25 UTCJul 23, 01:05 UTC1h 40m
2026-07-22 SWA3984 OAK → BUR Jul 22, 18:40 UTCJul 22, 21:00 UTC2h 20m
2026-07-22 SWA3984 OAK → BUR Jul 22, 18:38 UTCJul 22, 20:39 UTC2h 1m
2026-07-22 SWA261 DCA → MSY Jul 22, 13:50 UTCJul 22, 17:20 UTC3h 30m
2026-07-22 SWA1874 - Jul 22, 10:20 UTCJul 22, 11:55 UTC1h 35m
2026-07-22 SWA2777 BOI → SJC Jul 22, 00:10 UTCJul 22, 02:45 UTC2h 35m
2026-07-21 SWA4163 STL → MSY Jul 21, 18:40 UTCJul 21, 22:10 UTC3h 30m
2026-07-21 SWA4283 - Jul 21, 13:55 UTCJul 21, 17:05 UTC3h 10m
2026-07-21 SWA752 DEN → AUS Jul 21, 10:15 UTCJul 21, 12:50 UTC2h 35m
2026-07-21 SWA232 LAX → OAK Jul 21, 01:45 UTCJul 21, 03:25 UTC1h 40m
2026-07-20 SWA232 LAX → OAK Jul 20, 23:25 UTCJul 21, 00:50 UTC1h 24m
2026-07-20 SWA4922 MCO → ATL Jul 20, 21:00 UTCJul 20, 22:10 UTC1h 10m
2026-07-20 SWA2592 - Jul 20, 17:45 UTCJul 20, 18:30 UTC45m
2026-07-20 SWA2592 - Jul 20, 15:55 UTCJul 20, 16:05 UTC10m
2026-07-20 SWA2702 - Jul 20, 14:15 UTCJul 20, 14:35 UTC20m
2026-07-20 SWA2702 - Jul 20, 12:10 UTCJul 20, 12:40 UTC30m
2026-07-20 SWA2702 MCO → SJU Jul 20, 12:05 UTCJul 20, 14:29 UTC2h 24m
2026-07-20 SWA4874 PHX → BWI Jul 20, 05:30 UTCJul 20, 09:55 UTC4h 25m

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 N8606C page for operator, model, and routing details .

Mode-S ABD204 frequently asked

What is Mode-S code ABD204?
ABD204 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8606C.
Where is Mode-S ABD204 registered?
Mode-S code ABD204 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 ABD204 broadcasting right now?
Yes. Mode-S ABD204 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABD204, octal 52751004, decimal 11,260,420.
What flights does ABD204 operate?
Mode-S ABD204 has broadcast 20 distinct callsigns, including SWA3354, SWA212, SWA878, SWA725, SWA446.