Apparatus

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sensors Mode-S transponder

ABFD39

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8716B · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
ABFD39
Octal
52776471
Decimal
11,271,481
Country
US
Tail
N8716B
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
683
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ABFD39.

Country allocation

The ICAO 24-bit address ABFD39 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
SWA2209 Southwest Airlines 5 2026-05-22
SWA1916 - 5 2026-07-07
SWA1457 Southwest Airlines 5 2026-07-23
SWA4020 - 4 2026-06-28
SWA2766 Southwest Airlines 4 2026-05-11
SWA2380 Southwest Airlines 4 2026-06-16
SWA2290 Southwest Airlines 4 2026-05-15
SWA2159 - 4 2026-07-10
SWA2122 - 4 2026-07-16
SWA1492 Southwest Airlines 4 2026-05-25
SWA753 - 3 2026-04-13
SWA694 Southwest Airlines 3 2026-04-21
SWA46 Southwest Airlines 3 2026-05-30
SWA4488 - 3 2026-06-29
SWA4478 - 3 2026-04-16
SWA4452 Southwest Airlines 3 2026-07-21
SWA4127 Southwest Airlines 3 2026-06-14
SWA4064 Southwest Airlines 3 2026-04-19
SWA3790 - 3 2026-07-13
SWA377 - 3 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3595 ONT → LAS Jul 26, 19:25 UTCJul 26, 21:25 UTC2h 0m
2026-07-26 SWA2025 OAK → SAN Jul 26, 16:00 UTCJul 26, 17:55 UTC1h 55m
2026-07-26 SWA704 BOS → BWI Jul 26, 13:05 UTCJul 26, 14:15 UTC1h 10m
2026-07-26 SWA704 BOS → BWI Jul 26, 13:03 UTCJul 26, 14:55 UTC1h 52m
2026-07-26 SWA2409 LAS → LGB Jul 26, 05:40 UTCJul 26, 10:05 UTC4h 26m
2026-07-26 SWA2409 LAS → LGB Jul 26, 05:36 UTCJul 26, 10:06 UTC4h 30m
2026-07-26 SWA3932 DAL → MSY Jul 26, 01:25 UTCJul 26, 04:00 UTC2h 35m
2026-07-25 SWA336 BUR → SJC Jul 25, 21:45 UTCJul 26, 00:05 UTC2h 20m
2026-07-25 SWA212 AUS → BNA Jul 25, 17:35 UTCJul 25, 20:30 UTC2h 55m
2026-07-25 SWA212 AUS → BNA Jul 25, 17:31 UTCJul 25, 20:28 UTC2h 57m
2026-07-25 SWA4941 BOI → PHX Jul 25, 14:35 UTCJul 25, 16:10 UTC1h 35m
2026-07-25 SWA4941 BOI → PHX Jul 25, 14:32 UTCJul 25, 16:10 UTC1h 38m
2026-07-25 SWA1773 SJC → SEA Jul 25, 11:45 UTCJul 25, 13:25 UTC1h 40m
2026-07-25 SWA2770 SJC → SLC Jul 25, 02:40 UTCJul 25, 04:40 UTC2h 0m
2026-07-25 SWA2770 SJC → SLC Jul 25, 02:35 UTCJul 25, 04:31 UTC1h 56m
2026-07-25 SWA1200 SJC → PDX Jul 25, 00:20 UTCJul 25, 01:15 UTC55m
2026-07-25 SWA1200 SJC → PDX Jul 25, 00:19 UTCJul 25, 01:10 UTC51m
2026-07-24 SWA1963 DAL → DEN Jul 24, 21:20 UTCJul 24, 23:25 UTC2h 5m
2026-07-24 SWA1963 DAL → DEN Jul 24, 21:18 UTCJul 24, 23:24 UTC2h 6m
2026-07-24 SWA3673 LAS → SJC Jul 24, 16:40 UTCJul 24, 20:05 UTC3h 25m
2026-07-24 SWA1160 SFO → LAS Jul 24, 14:35 UTCJul 24, 15:30 UTC55m
2026-07-24 SWA2514 SJC → ONT Jul 24, 06:30 UTCJul 24, 10:15 UTC3h 45m
2026-07-24 SWA2514 SJC → ONT Jul 24, 06:12 UTCJul 24, 11:29 UTC5h 18m
2026-07-24 SWA3101 LAS → SJC Jul 24, 00:05 UTCJul 24, 00:20 UTC15m
2026-07-23 SWA1457 LAS → GEG Jul 23, 22:15 UTCJul 23, 22:25 UTC10m
2026-07-23 SWA1457 LAS → GEG Jul 23, 16:45 UTCJul 23, 17:40 UTC55m
2026-07-23 SWA1457 LAS → GEG Jul 23, 16:41 UTCJul 23, 22:25 UTC5h 44m
2026-07-23 SWA2484 BNA → MDW Jul 23, 14:10 UTCJul 23, 14:55 UTC45m
2026-07-23 SWA2484 BNA → MDW Jul 23, 14:06 UTCJul 23, 14:48 UTC42m
2026-07-23 SWA744 BWI → SAT Jul 23, 03:05 UTCJul 23, 04:10 UTC1h 5m
2026-07-23 SWA3549 BUR → LAS Jul 23, 00:48 UTCJul 23, 01:58 UTC1h 10m
2026-07-23 SWA3549 BUR → LAS Jul 23, 00:50 UTCJul 23, 02:00 UTC1h 10m
2026-07-22 SWA1938 SJC → AUS Jul 22, 18:30 UTCJul 22, 23:15 UTC4h 45m
2026-07-22 SWA2166 PVD → BWI Jul 22, 16:05 UTCJul 22, 16:35 UTC30m
2026-07-21 SWA4452 LGA → BNA Jul 21, 22:25 UTCJul 21, 22:35 UTC10m
2026-07-21 SWA4452 LGA → BNA Jul 21, 16:50 UTCJul 21, 17:45 UTC55m
2026-07-21 SWA4452 LGA → BNA Jul 21, 16:46 UTCJul 21, 22:30 UTC5h 44m
2026-07-21 SWA4348 OAK → LAS Jul 21, 14:15 UTCJul 21, 15:25 UTC1h 10m
2026-07-21 SWA1928 SNA → SJC Jul 21, 07:50 UTCJul 21, 12:25 UTC4h 35m
2026-07-20 SWA2397 LAX → MCI Jul 20, 21:20 UTCJul 20, 21:45 UTC25m
2026-07-20 SWA2397 LAX → MCI Jul 20, 16:15 UTCJul 20, 17:00 UTC45m
2026-07-20 SWA4637 AUS → LAS Jul 20, 10:25 UTCJul 20, 13:55 UTC3h 30m
2026-07-20 SWA4637 AUS → LAS Jul 20, 10:23 UTCJul 20, 13:49 UTC3h 27m
2026-07-20 SWA4762 SDF → TPA Jul 20, 03:35 UTCJul 20, 05:55 UTC2h 20m
2026-07-19 SWA1458 - Jul 19, 23:45 UTCJul 20, 02:15 UTC2h 30m
2026-07-19 SWA1458 DCA → PVD Jul 19, 21:00 UTCJul 19, 22:15 UTC1h 15m
2026-07-19 SWA2903 - Jul 19, 17:25 UTCJul 19, 19:30 UTC2h 5m
2026-07-19 SWA2984 - Jul 19, 15:15 UTCJul 19, 16:15 UTC1h 0m
2026-07-19 SWA1384 BWI → PIT Jul 19, 12:00 UTCJul 19, 13:55 UTC1h 55m
2026-07-19 SWA4624 - Jul 19, 03:20 UTCJul 19, 04:30 UTC1h 10m

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 N8716B page for operator, model, and routing details .

Mode-S ABFD39 frequently asked

What is Mode-S code ABFD39?
ABFD39 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8716B.
Where is Mode-S ABFD39 registered?
Mode-S code ABFD39 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 ABFD39 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFD39, octal 52776471, decimal 11,271,481.
What flights does ABFD39 operate?
Mode-S ABFD39 has broadcast 20 distinct callsigns, including SWA2209, SWA1916, SWA1457, SWA4020, SWA2766.