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sensors Mode-S transponder

AC5ADA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8954Q · operated by SOUTHWEST AIRLINES CO

Hex
AC5ADA
Octal
53055332
Decimal
11,295,450
Country
US
Tail
N8954Q
Type
B38M
No current signal · last broadcast Jul 26, 22:25 UTC
Flights observed
774
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:25 UTC

Last known position

Most recent position reported by Mode-S AC5ADA.

Country allocation

The ICAO 24-bit address AC5ADA 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
SWA3936 Southwest Airlines 5 2026-06-02
SWA2844 - 5 2026-06-18
SWA1966 - 5 2026-04-13
SWA961 - 4 2026-07-14
SWA486 - 4 2026-04-13
SWA454 Southwest Airlines 4 2026-05-30
SWA3804 Southwest Airlines 4 2026-05-26
SWA370 - 4 2026-07-11
SWA3216 - 4 2026-07-19
SWA1277 Southwest Airlines 4 2026-06-12
SWA1276 Southwest Airlines 4 2026-04-29
SWA595 - 3 2026-04-13
SWA4338 - 3 2026-07-09
SWA4299 - 3 2026-07-17
SWA4160 - 3 2026-06-23
SWA4120 - 3 2026-06-27
SWA3839 - 3 2026-06-21
SWA3638 Southwest Airlines 3 2026-05-17
SWA3571 Southwest Airlines 3 2026-05-06
SWA3556 - 3 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3565 BOS → MDW Jul 26, 20:30 UTCJul 26, 22:25 UTC1h 55m
2026-07-26 SWA3953 HAV → TPA Jul 26, 17:05 UTCJul 26, 17:50 UTC45m
2026-07-26 SWA3952 TPA → HAV Jul 26, 14:15 UTCJul 26, 15:00 UTC45m
2026-07-26 SWA1119 SDF → ATL Jul 26, 10:15 UTCJul 26, 12:15 UTC2h 0m
2026-07-25 SWA942 MDW → STL Jul 25, 23:45 UTCJul 26, 01:35 UTC1h 50m
2026-07-25 SWA2052 PDX → OAK Jul 25, 20:45 UTCJul 25, 22:25 UTC1h 40m
2026-07-25 SWA4738 DEN → DTW Jul 25, 17:50 UTCJul 25, 19:35 UTC1h 45m
2026-07-25 SWA569 BOS → BNA Jul 25, 15:10 UTCJul 25, 16:30 UTC1h 20m
2026-07-25 SWA569 BOS → BNA Jul 25, 15:08 UTCJul 25, 16:31 UTC1h 23m
2026-07-25 SWA2516 LAX → BWI Jul 25, 13:00 UTCJul 25, 14:00 UTC1h 0m
2026-07-25 SWA1338 STL → LIT Jul 25, 04:15 UTCJul 25, 04:55 UTC40m
2026-07-25 SWA1338 STL → LIT Jul 25, 01:35 UTCJul 25, 02:20 UTC45m
2026-07-24 SWA3511 BNA → PHL Jul 24, 22:05 UTCJul 25, 00:40 UTC2h 35m
2026-07-24 SWA4844 SMF → BUR Jul 24, 19:45 UTCJul 24, 20:45 UTC1h 0m
2026-07-24 SWA781 BNA → TPA Jul 24, 17:10 UTCJul 24, 18:35 UTC1h 25m
2026-07-24 SWA2520 BWI → BDL Jul 24, 12:20 UTCJul 24, 15:25 UTC3h 5m
2026-07-24 SWA2520 BWI → BDL Jul 24, 12:18 UTCJul 24, 15:21 UTC3h 3m
2026-07-24 SWA2520 BWI → BDL Jul 24, 10:15 UTCJul 24, 11:15 UTC1h 0m
2026-07-24 SWA968 BUR → LAS Jul 24, 04:15 UTCJul 24, 06:00 UTC1h 45m
2026-07-24 SWA1142 DAL → LGA Jul 24, 02:00 UTCJul 24, 03:10 UTC1h 10m
2026-07-24 SWA1142 DAL → LGA Jul 24, 01:56 UTCJul 24, 03:05 UTC1h 9m
2026-07-23 SWA1142 DAL → LGA Jul 23, 22:15 UTCJul 24, 01:00 UTC2h 45m
2026-07-23 SWA937 SJC → SNA Jul 23, 17:15 UTCJul 23, 20:40 UTC3h 25m
2026-07-23 SWA937 SJC → SNA Jul 23, 15:05 UTCJul 23, 15:55 UTC50m
2026-07-23 SWA4088 BUR → SJC Jul 23, 13:05 UTCJul 23, 13:50 UTC45m
2026-07-23 SWA3121 SMF → BUR Jul 23, 10:15 UTCJul 23, 11:50 UTC1h 35m
2026-07-23 SWA2293 DEN → PDX Jul 23, 05:25 UTCJul 23, 07:35 UTC2h 10m
2026-07-23 SWA4345 - Jul 23, 03:25 UTCJul 23, 04:15 UTC50m
2026-07-22 SWA3503 DAL → LGA Jul 22, 23:55 UTCJul 23, 01:50 UTC1h 55m
2026-07-22 SWA3369 SFO → LAS Jul 22, 17:55 UTCJul 22, 20:55 UTC3h 0m
2026-07-22 SWA1489 LAX → OAK Jul 22, 15:30 UTCJul 22, 16:35 UTC1h 5m
2026-07-22 SWA3456 DAL → AUS Jul 22, 11:50 UTCJul 22, 14:05 UTC2h 15m
2026-07-22 SWA3642 OAK → OGG Jul 22, 02:55 UTCJul 22, 05:05 UTC2h 10m
2026-07-22 SWA4397 - Jul 22, 00:50 UTCJul 22, 01:55 UTC1h 5m
2026-07-21 SWA4359 PHL → MDW Jul 21, 20:25 UTCJul 21, 23:15 UTC2h 50m
2026-07-21 SWA4351 - Jul 21, 18:25 UTCJul 21, 19:10 UTC45m
2026-07-21 SWA2744 SLC → MDW Jul 21, 13:40 UTCJul 21, 16:10 UTC2h 30m
2026-07-21 SWA2229 PHX → SFO Jul 21, 03:05 UTCJul 21, 04:25 UTC1h 20m
2026-07-21 SWA2229 PHX → SFO Jul 21, 03:00 UTCJul 21, 04:20 UTC1h 21m
2026-07-21 SWA1322 - Jul 21, 01:40 UTCJul 21, 02:20 UTC40m
2026-07-20 SWA1322 DAL → LAS Jul 20, 22:30 UTCJul 21, 00:45 UTC2h 15m
2026-07-20 SWA1322 - Jul 20, 20:05 UTCJul 20, 21:25 UTC1h 20m
2026-07-20 SWA409 AUS → STL Jul 20, 17:10 UTCJul 20, 18:45 UTC1h 35m
2026-07-20 SWA3758 AUS → MSY Jul 20, 12:55 UTCJul 20, 16:05 UTC3h 10m
2026-07-20 SWA717 - Jul 20, 04:20 UTCJul 20, 05:30 UTC1h 10m
2026-07-20 SWA1717 MDW → BDL Jul 20, 01:55 UTCJul 20, 03:10 UTC1h 15m
2026-07-19 SWA137 STL → JAX Jul 19, 23:55 UTCJul 20, 01:00 UTC1h 5m
2026-07-19 SWA4621 PHX → GEG Jul 19, 20:40 UTCJul 19, 22:55 UTC2h 15m
2026-07-19 SWA3216 PHL → BNA Jul 19, 17:20 UTCJul 19, 19:20 UTC2h 0m
2026-07-19 SWA3216 - Jul 19, 17:05 UTCJul 19, 17:10 UTC5m

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 N8954Q page for operator, model, and routing details .

Mode-S AC5ADA frequently asked

What is Mode-S code AC5ADA?
AC5ADA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8954Q.
Where is Mode-S AC5ADA registered?
Mode-S code AC5ADA 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 AC5ADA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5ADA, octal 53055332, decimal 11,295,450.
What flights does AC5ADA operate?
Mode-S AC5ADA has broadcast 20 distinct callsigns, including SWA3936, SWA2844, SWA1966, SWA961, SWA486.