Apparatus

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sensors Mode-S transponder

ABFD23

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8715Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
ABFD23
Octal
52776443
Decimal
11,271,459
Country
US
Tail
N8715Q
Type
B38M
No current signal · last broadcast 2h ago
Flights observed
586
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S ABFD23.

Country allocation

The ICAO 24-bit address ABFD23 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
SWA182 Southwest Airlines 6 2026-06-01
SWA1288 - 5 2026-06-14
SWA707 Southwest Airlines 4 2026-05-16
SWA602 Southwest Airlines 4 2026-05-16
SWA501 Southwest Airlines 4 2026-05-31
SWA899 - 3 2026-07-10
SWA713 Southwest Airlines 3 2026-05-23
SWA502 - 3 2026-06-30
SWA4044 - 3 2026-06-25
SWA2888 Southwest Airlines 3 2026-04-20
SWA2603 Southwest Airlines 3 2026-04-21
SWA2561 - 3 2026-07-07
SWA192 Southwest Airlines 3 2026-07-08
SWA1899 Southwest Airlines 3 2026-04-28
SWA1749 Southwest Airlines 3 2026-04-17
SWA1713 Southwest Airlines 3 2026-06-05
SWA1652 Southwest Airlines 3 2026-05-10
SWA1581 Southwest Airlines 3 2026-04-30
SWA1519 Southwest Airlines 3 2026-06-03
SWA1475 Southwest Airlines 3 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4895 LGA → STL Jul 14, 22:10 UTCJul 15, 00:10 UTC1h 59m
2026-07-14 SWA4478 - Jul 14, 17:55 UTCJul 14, 21:00 UTC3h 5m
2026-07-14 SWA1267 - Jul 14, 15:00 UTCJul 14, 16:35 UTC1h 35m
2026-07-14 SWA1267 SDF → DAL Jul 14, 14:56 UTCJul 14, 16:29 UTC1h 33m
2026-07-14 SWA1267 - Jul 14, 13:00 UTCJul 14, 13:55 UTC55m
2026-07-14 SWA3059 OAK → MDW Jul 14, 07:04 UTCJul 14, 10:58 UTC3h 54m
2026-07-14 SWA3059 OAK → MDW Jul 14, 07:05 UTCJul 14, 11:00 UTC3h 55m
2026-07-14 SWA4841 - Jul 14, 04:15 UTCJul 14, 05:15 UTC1h 0m
2026-07-14 SWA2330 LAS → SAN Jul 14, 02:35 UTCJul 14, 03:15 UTC40m
2026-07-14 SWA1571 - Jul 14, 00:35 UTCJul 14, 01:20 UTC45m
2026-07-13 SWA1571 - Jul 13, 21:30 UTCJul 13, 23:20 UTC1h 50m
2026-07-13 SWA4208 BOS → DEN Jul 13, 16:22 UTCJul 13, 20:07 UTC3h 45m
2026-07-13 SWA4208 BOS → DEN Jul 13, 16:25 UTCJul 13, 20:00 UTC3h 35m
2026-07-13 SWA4611 MDW → BOS Jul 13, 13:10 UTCJul 13, 15:05 UTC1h 55m
2026-07-13 SWA4057 - Jul 13, 10:15 UTCJul 13, 11:45 UTC1h 30m
2026-07-13 SWA2544 - Jul 13, 04:20 UTCJul 13, 05:25 UTC1h 5m
2026-07-13 SWA4493 - Jul 13, 01:20 UTCJul 13, 03:20 UTC2h 0m
2026-07-13 SWA4493 MCO → HOU Jul 13, 01:18 UTCJul 13, 03:21 UTC2h 3m
2026-07-12 SWA402 - Jul 12, 21:15 UTCJul 12, 22:10 UTC55m
2026-07-12 SWA402 PLS → MCO Jul 12, 20:12 UTCJul 12, 22:09 UTC1h 58m
2026-07-12 SWA401 - Jul 12, 17:20 UTCJul 12, 17:55 UTC35m
2026-07-12 SWA401 MCO → PLS Jul 12, 17:17 UTCJul 12, 18:55 UTC1h 38m
2026-07-12 SWA4718 - Jul 12, 13:15 UTCJul 12, 15:30 UTC2h 15m
2026-07-12 SWA423 ATL → AUS Jul 12, 10:15 UTCJul 12, 12:05 UTC1h 50m
2026-07-12 SWA423 ATL → AUS Jul 12, 10:16 UTCJul 12, 12:06 UTC1h 50m
2026-07-12 SWA4626 BWI → ATL Jul 12, 02:59 UTCJul 12, 04:29 UTC1h 30m
2026-07-11 SWA2466 - Jul 11, 23:15 UTCJul 12, 01:15 UTC2h 0m
2026-07-11 SWA4407 - Jul 11, 21:20 UTCJul 11, 22:15 UTC55m
2026-07-11 SWA4407 MDW → MCI Jul 11, 21:16 UTCJul 11, 22:13 UTC57m
2026-07-11 SWA217 - Jul 11, 15:45 UTCJul 11, 18:55 UTC3h 10m
2026-07-11 SWA612 - Jul 11, 11:30 UTCJul 11, 12:45 UTC1h 15m
2026-07-11 SWA612 CMH → CUN Jul 11, 11:26 UTCJul 11, 14:21 UTC2h 55m
2026-07-11 SWA4157 - Jul 11, 03:15 UTCJul 11, 04:15 UTC1h 0m
2026-07-10 SWA3191 - Jul 10, 23:20 UTCJul 11, 01:10 UTC1h 50m
2026-07-10 SWA4848 - Jul 10, 20:40 UTCJul 10, 22:35 UTC1h 55m
2026-07-10 SWA899 - Jul 10, 18:05 UTCJul 10, 19:15 UTC1h 10m
2026-07-10 SWA899 - Jul 10, 15:50 UTCJul 10, 17:00 UTC1h 10m
2026-07-10 SWA899 DEN → BWI Jul 10, 11:50 UTCJul 10, 14:45 UTC2h 55m
2026-07-10 SWA4620 TPA → DEN Jul 10, 01:40 UTCJul 10, 05:05 UTC3h 25m
2026-07-09 SWA245 ATL → TPA Jul 9, 23:39 UTCJul 10, 00:42 UTC1h 3m
2026-07-09 SWA245 ATL → TPA Jul 9, 23:40 UTCJul 10, 00:45 UTC1h 5m
2026-07-09 SWA4949 MSY → ATL Jul 9, 21:30 UTCJul 9, 22:35 UTC1h 5m
2026-07-09 SWA4949 MSY → ATL Jul 9, 21:30 UTCJul 9, 22:31 UTC1h 2m
2026-07-09 SWA3790 - Jul 9, 19:10 UTCJul 9, 20:20 UTC1h 10m
2026-07-09 SWA3790 - Jul 9, 16:30 UTCJul 9, 17:35 UTC1h 5m
2026-07-09 SWA310 BUR → OAK Jul 9, 14:35 UTCJul 9, 15:20 UTC45m
2026-07-09 SWA310 BUR → OAK Jul 9, 14:34 UTCJul 9, 15:20 UTC46m
2026-07-09 SWA4683 ABQ → AUS Jul 9, 11:40 UTCJul 9, 13:05 UTC1h 25m
2026-07-09 SWA1172 - Jul 9, 02:00 UTCJul 9, 03:20 UTC1h 20m
2026-07-08 SWA2085 - Jul 8, 23:30 UTCJul 9, 00:50 UTC1h 20m

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 N8715Q page for operator, model, and routing details .

Mode-S ABFD23 frequently asked

What is Mode-S code ABFD23?
ABFD23 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8715Q.
Where is Mode-S ABFD23 registered?
Mode-S code ABFD23 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 ABFD23 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFD23, octal 52776443, decimal 11,271,459.
What flights does ABFD23 operate?
Mode-S ABFD23 has broadcast 20 distinct callsigns, including SWA182, SWA1288, SWA707, SWA602, SWA501.