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 Jul 26, 22:30 UTC
Flights observed
731
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

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
SWA2904 - 5 2026-07-17
SWA2104 - 5 2026-06-29
SWA1346 Southwest Airlines 5 2026-05-16
SWA1277 Southwest Airlines 5 2026-07-24
SWA4136 - 4 2026-07-14
SWA3754 - 4 2026-07-16
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
SWA760 - 3 2026-07-15
SWA713 - 3 2026-04-13
SWA45 Southwest Airlines 3 2026-04-14
SWA4198 - 3 2026-07-16
SWA4128 Southwest Airlines 3 2026-06-11
SWA3847 Southwest Airlines 3 2026-04-16
SWA3688 - 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA768 SJC → AUS Jul 26, 22:05 UTCJul 26, 22:30 UTC25m
2026-07-26 SWA768 SJC → AUS Jul 26, 18:55 UTCJul 26, 20:50 UTC1h 55m
2026-07-26 SWA2868 SAN → SJC Jul 26, 15:50 UTCJul 26, 17:50 UTC2h 0m
2026-07-26 SWA2868 SAN → SJC Jul 26, 15:50 UTCJul 26, 17:45 UTC1h 55m
2026-07-26 SWA2918 BWI → BOS Jul 26, 13:15 UTCJul 26, 14:25 UTC1h 10m
2026-07-26 SWA4410 SJC → LAS Jul 26, 10:50 UTCJul 26, 11:45 UTC55m
2026-07-26 SWA4410 SJC → LAS Jul 26, 10:47 UTCJul 26, 11:44 UTC57m
2026-07-26 SWA2206 MDW → MCO Jul 26, 00:00 UTCJul 26, 04:00 UTC4h 0m
2026-07-25 SWA4655 LAS → SJC Jul 25, 19:50 UTCJul 25, 22:20 UTC2h 30m
2026-07-25 SWA4655 LAS → SJC Jul 25, 19:46 UTCJul 25, 22:15 UTC2h 29m
2026-07-25 SWA1800 MDW → OAK Jul 25, 16:45 UTCJul 25, 18:21 UTC1h 36m
2026-07-25 SWA4582 BOS → MCO Jul 25, 14:30 UTCJul 25, 15:05 UTC35m
2026-07-25 SWA4310 SJC → SEA Jul 25, 11:00 UTCJul 25, 13:15 UTC2h 15m
2026-07-24 SWA965 OAK → PDX Jul 24, 23:05 UTCJul 25, 01:20 UTC2h 15m
2026-07-24 SWA1277 LAS → CMH Jul 24, 19:55 UTCJul 24, 20:55 UTC1h 0m
2026-07-24 SWA1277 LAS → CMH Jul 24, 17:10 UTCJul 24, 18:45 UTC1h 35m
2026-07-24 SWA1277 LAS → CMH Jul 24, 14:55 UTCJul 24, 16:00 UTC1h 5m
2026-07-24 SWA2346 OAK → LAS Jul 24, 12:45 UTCJul 24, 13:40 UTC55m
2026-07-24 SWA2346 OAK → LAS Jul 24, 12:40 UTCJul 24, 13:39 UTC59m
2026-07-24 SWA5051 AUS → ATL Jul 24, 04:45 UTCJul 24, 05:47 UTC1h 3m
2026-07-24 SWA5051 AUS → ATL Jul 24, 04:50 UTCJul 24, 05:50 UTC1h 0m
2026-07-24 SWA2490 OAK → PHX Jul 24, 01:34 UTCJul 24, 02:24 UTC50m
2026-07-24 SWA2490 OAK → PHX Jul 24, 01:35 UTCJul 24, 02:30 UTC55m
2026-07-23 SWA149 SFO → PHX Jul 23, 23:50 UTCJul 24, 00:45 UTC55m
2026-07-23 SWA149 SFO → PHX Jul 23, 22:00 UTCJul 23, 22:50 UTC50m
2026-07-23 SWA4621 PHX → GEG Jul 23, 18:35 UTCJul 23, 20:55 UTC2h 20m
2026-07-23 SWA2188 DAL → LGA Jul 23, 14:05 UTCJul 23, 17:15 UTC3h 10m
2026-07-23 SWA1833 BNA → TPA Jul 23, 00:00 UTCJul 23, 01:10 UTC1h 10m
2026-07-22 SWA123 CMH → SRQ Jul 22, 21:45 UTCJul 22, 22:50 UTC1h 5m
2026-07-22 SWA123 CMH → SRQ Jul 22, 21:41 UTCJul 22, 22:45 UTC1h 4m
2026-07-22 SWA323 SBA → OAK Jul 22, 18:05 UTCJul 22, 20:25 UTC2h 20m
2026-07-22 SWA2459 MDW → OAK Jul 22, 14:50 UTCJul 22, 17:00 UTC2h 10m
2026-07-22 SWA440 DAL → MCI Jul 22, 12:10 UTCJul 22, 13:25 UTC1h 15m
2026-07-22 SWA103 PHL → MDW Jul 22, 00:40 UTCJul 22, 04:00 UTC3h 20m
2026-07-21 SWA3575 - Jul 21, 20:20 UTCJul 21, 22:45 UTC2h 25m
2026-07-21 SWA3575 SAT → LAS Jul 21, 20:17 UTCJul 21, 22:34 UTC2h 17m
2026-07-21 SWA4045 TPA → MSY Jul 21, 17:20 UTCJul 21, 19:25 UTC2h 5m
2026-07-21 SWA591 DEN → ONT Jul 21, 15:00 UTCJul 21, 16:00 UTC1h 0m
2026-07-21 SWA3931 - Jul 21, 12:30 UTCJul 21, 13:55 UTC1h 25m
2026-07-21 SWA3931 BWI → ATL Jul 21, 12:25 UTCJul 21, 13:50 UTC1h 25m
2026-07-21 SWA4534 CMH → SRQ Jul 21, 09:45 UTCJul 21, 10:40 UTC55m
2026-07-21 SWA4534 CMH → SRQ Jul 21, 09:40 UTCJul 21, 10:36 UTC56m
2026-07-21 SWA942 - Jul 21, 02:55 UTCJul 21, 04:05 UTC1h 10m
2026-07-21 SWA3027 DEN → SJC Jul 21, 00:20 UTCJul 21, 01:45 UTC1h 25m
2026-07-20 SWA3027 DEN → SJC Jul 20, 21:45 UTCJul 20, 23:10 UTC1h 25m
2026-07-20 SWA2903 - Jul 20, 20:05 UTCJul 20, 20:50 UTC45m
2026-07-20 SWA4664 MKE → MCO Jul 20, 17:05 UTCJul 20, 19:00 UTC1h 55m
2026-07-20 SWA2834 DAL → DEN Jul 20, 14:05 UTCJul 20, 15:50 UTC1h 45m
2026-07-20 SWA2834 DAL → DEN Jul 20, 11:20 UTCJul 20, 13:00 UTC1h 40m
2026-07-20 SWA1040 TPA → PVD Jul 20, 05:50 UTCJul 20, 06:20 UTC30m

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 Jul 26, 22:30 UTC.
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 SWA2904, SWA2104, SWA1346, SWA1277, SWA4136.