Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABBC52

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8550Q · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABBC52
Octal
52736122
Decimal
11,254,866
Country
US
Tail
N8550Q
Type
B738
No current signal · last broadcast 1h ago
Flights observed
640
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ABBC52.

Country allocation

The ICAO 24-bit address ABBC52 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
SWA2104 - 5 2026-06-29
SWA1346 Southwest Airlines 5 2026-05-16
SWA1763 Southwest Airlines 4 2026-04-16
SWA1490 Southwest Airlines 4 2026-05-29
SWA1163 Southwest Airlines 4 2026-05-18
SWA963 - 3 2026-06-26
SWA914 - 3 2026-07-05
SWA857 Southwest Airlines 3 2026-05-02
SWA851 Southwest Airlines 3 2026-05-05
SWA713 - 3 2026-04-13
SWA45 Southwest Airlines 3 2026-04-14
SWA4128 Southwest Airlines 3 2026-06-11
SWA3847 Southwest Airlines 3 2026-04-16
SWA3688 - 3 2026-04-13
SWA3638 Southwest Airlines 3 2026-05-03
SWA3452 Southwest Airlines 3 2026-05-29
SWA3071 Southwest Airlines 3 2026-05-15
SWA3069 - 3 2026-07-06
SWA2904 Southwest Airlines 3 2026-04-16
SWA2531 Southwest Airlines 3 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4136 - Jul 14, 02:05 UTCJul 14, 02:30 UTC25m
2026-07-14 SWA4136 - Jul 14, 00:15 UTCJul 14, 01:25 UTC1h 10m
2026-07-13 SWA4678 - Jul 13, 20:55 UTCJul 13, 22:40 UTC1h 45m
2026-07-13 SWA4678 SAT → DEN Jul 13, 20:53 UTCJul 13, 22:42 UTC1h 49m
2026-07-13 SWA3940 - Jul 13, 18:20 UTCJul 13, 19:55 UTC1h 35m
2026-07-13 SWA3940 - Jul 13, 16:10 UTCJul 13, 17:00 UTC50m
2026-07-13 SWA4399 - Jul 13, 14:25 UTCJul 13, 15:10 UTC45m
2026-07-13 SWA4399 DAL → LBB Jul 13, 14:23 UTCJul 13, 15:08 UTC45m
2026-07-13 SWA1218 COS → DAL Jul 13, 11:45 UTCJul 13, 13:10 UTC1h 25m
2026-07-13 SWA444 LAS → COS Jul 13, 05:15 UTCJul 13, 06:45 UTC1h 30m
2026-07-13 SWA444 - Jul 13, 03:20 UTCJul 13, 04:15 UTC55m
2026-07-13 SWA2012 - Jul 13, 01:25 UTCJul 13, 02:15 UTC50m
2026-07-12 SWA2012 AUS → LAS Jul 12, 21:50 UTCJul 13, 00:10 UTC2h 20m
2026-07-12 SWA2878 MIA → AUS Jul 12, 18:01 UTCJul 12, 20:30 UTC2h 30m
2026-07-12 SWA2878 MIA → AUS Jul 12, 18:00 UTCJul 12, 20:33 UTC2h 33m
2026-07-12 SWA2464 - Jul 12, 14:10 UTCJul 12, 16:45 UTC2h 35m
2026-07-12 SWA2464 - Jul 12, 10:55 UTCJul 12, 12:55 UTC2h 0m
2026-07-11 SWA2987 - Jul 11, 23:55 UTCJul 12, 00:55 UTC1h 0m
2026-07-11 SWA3414 - Jul 11, 21:30 UTCJul 11, 22:50 UTC1h 20m
2026-07-11 SWA1467 - Jul 11, 18:25 UTCJul 11, 20:05 UTC1h 40m
2026-07-11 SWA1467 MDW → PWM Jul 11, 18:24 UTCJul 11, 20:08 UTC1h 44m
2026-07-11 SWA1467 PHX → MDW Jul 11, 14:15 UTCJul 11, 17:15 UTC3h 0m
2026-07-11 SWA642 BNA → PHX Jul 11, 01:45 UTCJul 11, 04:50 UTC3h 5m
2026-07-10 SWA4711 MCO → BNA Jul 10, 21:35 UTCJul 10, 23:10 UTC1h 35m
2026-07-10 SWA4711 MCO → BNA Jul 10, 21:35 UTCJul 10, 23:05 UTC1h 30m
2026-07-10 SWA4714 BNA → MCO Jul 10, 18:00 UTCJul 10, 19:30 UTC1h 30m
2026-07-10 SWA4713 MCO → BNA Jul 10, 15:20 UTCJul 10, 16:50 UTC1h 30m
2026-07-10 SWA4726 - Jul 10, 12:15 UTCJul 10, 14:00 UTC1h 45m
2026-07-10 SWA1688 - Jul 10, 03:45 UTCJul 10, 06:10 UTC2h 25m
2026-07-09 SWA1145 - Jul 9, 22:05 UTCJul 10, 02:35 UTC4h 30m
2026-07-09 SWA269 - Jul 9, 18:20 UTCJul 9, 20:25 UTC2h 5m
2026-07-09 SWA1864 LAS → AUS Jul 9, 14:55 UTCJul 9, 17:15 UTC2h 20m
2026-07-09 SWA1864 LAS → AUS Jul 9, 14:54 UTCJul 9, 17:11 UTC2h 17m
2026-07-09 SWA3281 PHX → LAS Jul 9, 12:55 UTCJul 9, 13:45 UTC50m
2026-07-09 SWA1048 - Jul 9, 04:05 UTCJul 9, 06:15 UTC2h 10m
2026-07-09 SWA1048 PDX → PHX Jul 9, 04:03 UTCJul 9, 06:11 UTC2h 8m
2026-07-08 SWA4765 - Jul 8, 23:20 UTCJul 9, 03:15 UTC3h 55m
2026-07-08 SWA3081 SEA → MDW Jul 8, 18:45 UTCJul 8, 22:05 UTC3h 20m
2026-07-08 SWA1713 - Jul 8, 14:40 UTCJul 8, 17:10 UTC2h 30m
2026-07-08 SWA4071 MSP → DEN Jul 8, 11:40 UTCJul 8, 13:15 UTC1h 35m
2026-07-07 SWA2832 - Jul 7, 20:25 UTCJul 7, 21:25 UTC1h 0m
2026-07-07 SWA1813 - Jul 7, 16:25 UTCJul 7, 18:50 UTC2h 25m
2026-07-07 SWA1813 ELP → MDW Jul 7, 16:11 UTCJul 7, 18:50 UTC2h 39m
2026-07-07 SWA4481 - Jul 7, 13:45 UTCJul 7, 14:55 UTC1h 10m
2026-07-07 SWA2645 - Jul 7, 05:00 UTCJul 7, 06:50 UTC1h 50m
2026-07-07 SWA572 - Jul 7, 01:35 UTCJul 7, 03:00 UTC1h 25m
2026-07-06 SWA2597 DEN → BNA Jul 6, 22:00 UTCJul 7, 00:05 UTC2h 5m
2026-07-06 SWA2597 DEN → BNA Jul 6, 21:57 UTCJul 7, 00:04 UTC2h 7m
2026-07-06 SWA3069 - Jul 6, 18:50 UTCJul 6, 20:45 UTC1h 55m
2026-07-06 SWA3069 HOU → DEN Jul 6, 18:45 UTCJul 6, 20:36 UTC1h 51m

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 N8550Q page for operator, model, and routing details .

Mode-S ABBC52 frequently asked

What is Mode-S code ABBC52?
ABBC52 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8550Q.
Where is Mode-S ABBC52 registered?
Mode-S code ABBC52 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 ABBC52 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 ABBC52, octal 52736122, decimal 11,254,866.
What flights does ABBC52 operate?
Mode-S ABBC52 has broadcast 20 distinct callsigns, including SWA2104, SWA1346, SWA1763, SWA1490, SWA1163.