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sensors Mode-S transponder

ABF9D5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8708Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
ABF9D5
Octal
52774725
Decimal
11,270,613
Country
US
Tail
N8708Q
Type
B38M
No current signal · last broadcast Jul 23, 18:40 UTC
Flights observed
561
Distinct callsigns
20
Country
US
Last broadcast
Jul 23, 18:40 UTC

Last known position

Most recent position reported by Mode-S ABF9D5.

Country allocation

The ICAO 24-bit address ABF9D5 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
SWA2603 Southwest Airlines 6 2026-05-30
SWA609 - 5 2026-04-13
SWA456 - 4 2026-06-14
SWA4128 Southwest Airlines 4 2026-06-15
SWA3452 Southwest Airlines 4 2026-05-23
SWA2280 - 4 2026-06-27
SWA2122 - 4 2026-07-02
SWA1914 - 4 2026-06-21
SWA1274 Southwest Airlines 4 2026-05-24
SWA997 Southwest Airlines 3 2026-04-18
SWA706 Southwest Airlines 3 2026-05-22
SWA502 Southwest Airlines 3 2026-07-21
SWA4133 Southwest Airlines 3 2026-05-04
SWA4072 Southwest Airlines 3 2026-05-18
SWA3781 Southwest Airlines 3 2026-06-12
SWA3672 Southwest Airlines 3 2026-06-08
SWA3356 Southwest Airlines 3 2026-06-27
SWA3093 Southwest Airlines 3 2026-06-21
SWA305 Southwest Airlines 3 2026-05-29
SWA2677 Southwest Airlines 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 SWA8501 PAE → OAK Jul 23, 16:15 UTCJul 23, 17:15 UTC1h 0m
2026-07-23 SWA8501 PAE → OAK Jul 23, 16:14 UTCJul 23, 18:32 UTC2h 18m
2026-07-23 SWA1975 MDW → MCO Jul 23, 02:30 UTCJul 23, 04:50 UTC2h 20m
2026-07-22 SWA1545 OAK → PDX Jul 22, 23:25 UTCJul 23, 01:30 UTC2h 5m
2026-07-22 SWA1545 OAK → PDX Jul 22, 23:23 UTCJul 23, 01:15 UTC1h 52m
2026-07-22 SWA2945 LGA → TPA Jul 22, 20:00 UTCJul 22, 22:05 UTC2h 5m
2026-07-22 SWA2945 LGA → TPA Jul 22, 19:55 UTCJul 22, 22:03 UTC2h 8m
2026-07-22 SWA1376 DEN → MKE Jul 22, 17:00 UTCJul 22, 18:45 UTC1h 45m
2026-07-22 SWA1376 DEN → MKE Jul 22, 16:58 UTCJul 22, 18:45 UTC1h 47m
2026-07-22 SWA499 SAN → OAK Jul 22, 13:35 UTCJul 22, 15:55 UTC2h 20m
2026-07-22 SWA179 MSY → DEN Jul 22, 11:15 UTCJul 22, 11:55 UTC40m
2026-07-22 SWA1472 PHX → OAK Jul 22, 01:35 UTCJul 22, 03:55 UTC2h 20m
2026-07-22 SWA1472 PHX → OAK Jul 22, 01:32 UTCJul 22, 03:54 UTC2h 22m
2026-07-21 SWA2632 ONT → DEN Jul 21, 20:10 UTCJul 21, 23:29 UTC3h 19m
2026-07-21 SWA2632 ONT → DEN Jul 21, 20:15 UTCJul 21, 23:35 UTC3h 20m
2026-07-21 SWA502 BOS → BWI Jul 21, 14:55 UTCJul 21, 17:35 UTC2h 40m
2026-07-21 SWA502 BOS → BWI Jul 21, 14:49 UTCJul 21, 17:30 UTC2h 41m
2026-07-20 SWA112 HOU → SJO Jul 20, 23:40 UTCJul 21, 02:50 UTC3h 10m
2026-07-20 SWA1013 BZE → HOU Jul 20, 20:20 UTCJul 20, 22:10 UTC1h 50m
2026-07-20 SWA1013 BZE → HOU Jul 20, 20:06 UTCJul 20, 22:10 UTC2h 4m
2026-07-20 SWA837 - Jul 20, 17:05 UTCJul 20, 18:45 UTC1h 40m
2026-07-20 SWA837 HOU → BZE Jul 20, 17:02 UTCJul 20, 19:00 UTC1h 58m
2026-07-20 SWA2399 - Jul 20, 12:35 UTCJul 20, 15:25 UTC2h 50m
2026-07-20 SWA4556 - Jul 20, 05:05 UTCJul 20, 08:15 UTC3h 10m
2026-07-20 SWA4556 STL → LAX Jul 20, 05:05 UTCJul 20, 08:09 UTC3h 4m
2026-07-20 SWA1758 LAX → OAK Jul 20, 02:05 UTCJul 20, 03:15 UTC1h 10m
2026-07-20 SWA1758 LAX → OAK Jul 20, 02:00 UTCJul 20, 03:34 UTC1h 34m
2026-07-19 SWA1382 LAS → DEN Jul 19, 23:15 UTCJul 20, 00:50 UTC1h 35m
2026-07-19 SWA1382 SMF → LAS Jul 19, 21:00 UTCJul 19, 22:00 UTC1h 0m
2026-07-19 SWA1740 MHT → MDW Jul 19, 17:52 UTCJul 19, 19:46 UTC1h 54m
2026-07-19 SWA1740 MHT → MDW Jul 19, 17:55 UTCJul 19, 19:50 UTC1h 55m
2026-07-19 SWA5076 LAS → DEN Jul 19, 15:00 UTCJul 19, 16:30 UTC1h 30m
2026-07-19 SWA2171 - Jul 19, 10:40 UTCJul 19, 11:35 UTC55m
2026-07-19 SWA2171 - Jul 19, 06:30 UTCJul 19, 06:35 UTC5m
2026-07-19 SWA3099 STL → BOS Jul 19, 00:15 UTCJul 19, 00:30 UTC15m
2026-07-19 SWA3099 STL → BOS Jul 19, 00:09 UTCJul 19, 00:30 UTC21m
2026-07-18 SWA373 - Jul 18, 22:50 UTCJul 18, 23:00 UTC10m
2026-07-18 SWA373 - Jul 18, 17:40 UTCJul 18, 18:15 UTC35m
2026-07-18 SWA2251 LAS → SAN Jul 18, 14:45 UTCJul 18, 15:30 UTC45m
2026-07-18 SWA2251 - Jul 18, 10:50 UTCJul 18, 13:25 UTC2h 35m
2026-07-17 SWA3673 SJC → HOU Jul 17, 16:35 UTCJul 17, 20:00 UTC3h 25m
2026-07-17 SWA3673 - Jul 17, 16:40 UTCJul 17, 20:00 UTC3h 20m
2026-07-17 SWA1160 LAS → SJC Jul 17, 14:36 UTCJul 17, 15:34 UTC58m
2026-07-17 SWA1160 LAS → SJC Jul 17, 14:39 UTCJul 17, 15:35 UTC55m
2026-07-17 SWA139 - Jul 17, 10:50 UTCJul 17, 11:50 UTC1h 0m
2026-07-17 SWA2515 - Jul 17, 00:04 UTCJul 17, 00:25 UTC20m
2026-07-16 SWA2262 - Jul 16, 16:49 UTCJul 16, 22:35 UTC5h 45m
2026-07-16 SWA4197 MKE → LAS Jul 16, 11:20 UTCJul 16, 14:25 UTC3h 5m
2026-07-15 SWA4727 - Jul 15, 23:45 UTCJul 16, 02:00 UTC2h 15m
2026-07-15 SWA2529 AUS → MCO Jul 15, 20:05 UTCJul 15, 22:15 UTC2h 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 N8708Q page for operator, model, and routing details .

Mode-S ABF9D5 frequently asked

What is Mode-S code ABF9D5?
ABF9D5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8708Q.
Where is Mode-S ABF9D5 registered?
Mode-S code ABF9D5 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 ABF9D5 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 18:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABF9D5, octal 52774725, decimal 11,270,613.
What flights does ABF9D5 operate?
Mode-S ABF9D5 has broadcast 20 distinct callsigns, including SWA2603, SWA609, SWA456, SWA4128, SWA3452.