Apparatus

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sensors Mode-S transponder

ACEB61

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N931WN · BOEING 737-700 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ACEB61
Octal
53165541
Decimal
11,332,449
Country
US
Tail
N931WN
Type
B737
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
796
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S ACEB61.

Country allocation

The ICAO 24-bit address ACEB61 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
SWA1149 Southwest Airlines 11 2026-04-25
SWA169 Southwest Airlines 7 2026-05-02
SWA2748 Southwest Airlines 6 2026-06-09
SWA1909 Southwest Airlines 6 2026-04-14
SWA103 - 6 2026-07-18
SWA311 - 5 2026-07-16
SWA866 Southwest Airlines 4 2026-05-30
SWA827 - 4 2026-06-24
SWA684 Southwest Airlines 4 2026-07-21
SWA4461 Southwest Airlines 4 2026-06-12
SWA4184 - 4 2026-04-17
SWA411 - 4 2026-07-14
SWA4055 Southwest Airlines 4 2026-06-03
SWA352 Southwest Airlines 4 2026-07-04
SWA335 Southwest Airlines 4 2026-06-16
SWA2590 Southwest Airlines 4 2026-05-26
SWA245 Southwest Airlines 4 2026-04-20
SWA2196 - 4 2026-06-24
SWA1642 Southwest Airlines 4 2026-05-28
SWA1454 Southwest Airlines 4 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4724 SYR → BWI Jul 26, 18:50 UTCJul 26, 21:40 UTC2h 50m
2026-07-26 SWA2333 RSW → STL Jul 26, 16:50 UTCJul 26, 17:30 UTC40m
2026-07-26 SWA209 BNA → DTW Jul 26, 15:18 UTCJul 26, 15:51 UTC33m
2026-07-26 SWA209 BNA → DTW Jul 26, 10:35 UTCJul 26, 14:00 UTC3h 25m
2026-07-26 SWA3711 RDU → FLL Jul 26, 00:45 UTCJul 26, 02:25 UTC1h 40m
2026-07-25 SWA1269 ATL → LGA Jul 25, 22:30 UTCJul 25, 23:45 UTC1h 15m
2026-07-25 SWA1269 ATL → LGA Jul 25, 22:15 UTCJul 25, 23:38 UTC1h 23m
2026-07-25 SWA946 PHX → DAL Jul 25, 20:05 UTCJul 25, 21:00 UTC55m
2026-07-25 SWA946 PHX → DAL Jul 25, 20:03 UTCJul 25, 21:15 UTC1h 12m
2026-07-25 SWA3801 LAS → OAK Jul 25, 17:05 UTCJul 25, 19:05 UTC2h 0m
2026-07-25 SWA1884 BWI → LAS Jul 25, 13:35 UTCJul 25, 15:50 UTC2h 15m
2026-07-25 SWA1538 MHT → BWI Jul 25, 04:30 UTCJul 25, 06:23 UTC1h 53m
2026-07-25 SWA1538 MHT → BWI Jul 25, 04:35 UTCJul 25, 06:25 UTC1h 50m
2026-07-25 SWA1538 MHT → BWI Jul 25, 01:15 UTCJul 25, 03:15 UTC2h 0m
2026-07-24 SWA4300 BOI → LGB Jul 24, 21:50 UTCJul 25, 00:25 UTC2h 35m
2026-07-24 SWA4300 BOI → LGB Jul 24, 20:50 UTCJul 24, 21:05 UTC15m
2026-07-24 SWA106 BUR → SJC Jul 24, 19:20 UTCJul 24, 20:45 UTC1h 25m
2026-07-24 SWA106 BUR → SJC Jul 24, 17:30 UTCJul 24, 18:15 UTC45m
2026-07-24 SWA106 BUR → SJC Jul 24, 14:50 UTCJul 24, 16:20 UTC1h 30m
2026-07-24 SWA715 DAL → LGA Jul 24, 12:40 UTCJul 24, 13:50 UTC1h 10m
2026-07-24 SWA644 SNA → SJC Jul 24, 04:40 UTCJul 24, 06:20 UTC1h 40m
2026-07-24 SWA3077 PHX → SEA Jul 24, 02:20 UTCJul 24, 03:35 UTC1h 15m
2026-07-24 SWA4842 FLL → IND Jul 24, 00:20 UTCJul 24, 01:20 UTC1h 0m
2026-07-23 SWA1887 OAK → BUR Jul 23, 20:40 UTCJul 23, 23:15 UTC2h 35m
2026-07-23 SWA1887 OAK → BUR Jul 23, 20:40 UTCJul 23, 23:11 UTC2h 31m
2026-07-23 SWA2491 PWM → MDW Jul 23, 17:15 UTCJul 23, 19:25 UTC2h 10m
2026-07-23 SWA2491 PWM → MDW Jul 23, 15:10 UTCJul 23, 16:05 UTC55m
2026-07-23 SWA4907 SAT → MSY Jul 23, 03:30 UTCJul 23, 04:25 UTC55m
2026-07-22 SWA674 HOU → OAK Jul 22, 22:15 UTCJul 23, 02:20 UTC4h 5m
2026-07-22 SWA674 HOU → OAK Jul 22, 22:11 UTCJul 23, 02:19 UTC4h 8m
2026-07-22 SWA674 HOU → OAK Jul 22, 19:55 UTCJul 22, 21:00 UTC1h 5m
2026-07-22 SWA1011 DEN → SJC Jul 22, 17:50 UTCJul 22, 18:55 UTC1h 5m
2026-07-22 SWA1011 DEN → SJC Jul 22, 17:45 UTCJul 22, 18:53 UTC1h 8m
2026-07-22 SWA1011 DEN → SJC Jul 22, 15:05 UTCJul 22, 16:55 UTC1h 50m
2026-07-22 SWA1899 MDW → DCA Jul 22, 12:40 UTCJul 22, 13:45 UTC1h 5m
2026-07-22 SWA4563 BOI → SMF Jul 22, 02:30 UTCJul 22, 03:05 UTC35m
2026-07-21 SWA1775 PHL → STL Jul 21, 23:10 UTCJul 22, 00:10 UTC1h 0m
2026-07-21 SWA1775 PHL → STL Jul 21, 23:06 UTCJul 22, 00:15 UTC1h 9m
2026-07-21 SWA1775 PHL → STL Jul 21, 19:55 UTCJul 21, 22:15 UTC2h 20m
2026-07-21 SWA684 PHL → TPA Jul 21, 16:55 UTCJul 21, 18:15 UTC1h 20m
2026-07-21 SWA684 PHL → TPA Jul 21, 16:54 UTCJul 21, 18:45 UTC1h 51m
2026-07-21 SWA684 PHL → TPA Jul 21, 14:35 UTCJul 21, 15:45 UTC1h 10m
2026-07-21 SWA684 PHL → TPA Jul 21, 12:10 UTCJul 21, 13:30 UTC1h 20m
2026-07-20 SWA164 PDX → OAK Jul 20, 22:30 UTCJul 21, 00:40 UTC2h 10m
2026-07-20 SWA164 PDX → OAK Jul 20, 19:50 UTCJul 20, 21:35 UTC1h 45m
2026-07-20 SWA164 PDX → OAK Jul 20, 18:05 UTCJul 20, 19:00 UTC55m
2026-07-20 SWA3185 RIC → MDW Jul 20, 16:25 UTCJul 20, 17:05 UTC40m
2026-07-20 SWA1070 - Jul 20, 14:55 UTCJul 20, 15:25 UTC30m
2026-07-20 SWA2936 LAS → OAK Jul 20, 12:25 UTCJul 20, 13:50 UTC1h 25m
2026-07-20 SWA1343 DAL → MKE Jul 20, 05:15 UTCJul 20, 07:15 UTC2h 0m

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 N931WN page for operator, model, and routing details .

Mode-S ACEB61 frequently asked

What is Mode-S code ACEB61?
ACEB61 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N931WN.
Where is Mode-S ACEB61 registered?
Mode-S code ACEB61 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 ACEB61 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACEB61, octal 53165541, decimal 11,332,449.
What flights does ACEB61 operate?
Mode-S ACEB61 has broadcast 20 distinct callsigns, including SWA1149, SWA169, SWA2748, SWA1909, SWA103.