Apparatus

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sensors Mode-S transponder

AC2FEA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8846Q · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC2FEA
Octal
53027752
Decimal
11,284,458
Country
US
Tail
N8846Q
Type
B38M
Broadcasting now · callsign SWA4007 · 31,800 ft
Flights observed
717
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:05 UTC

Current position

AC2FEA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC2FEA 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
SWA1257 Southwest Airlines 8 2026-05-08
SWA2834 - 5 2026-07-01
SWA2686 Southwest Airlines 5 2026-06-07
SWA1746 Southwest Airlines 5 2026-04-21
SWA3684 Southwest Airlines 4 2026-05-08
SWA1784 Southwest Airlines 4 2026-05-27
SWA1559 Southwest Airlines 4 2026-06-01
SWA149 - 4 2026-07-17
SWA1137 - 4 2026-06-17
SWA4953 - 3 2026-07-17
SWA4605 Southwest Airlines 3 2026-05-03
SWA4450 Southwest Airlines 3 2026-06-07
SWA4424 - 3 2026-06-30
SWA434 Southwest Airlines 3 2026-05-22
SWA4267 - 3 2026-07-18
SWA4160 - 3 2026-06-16
SWA4047 - 3 2026-07-11
SWA3936 Southwest Airlines 3 2026-05-15
SWA3865 - 3 2026-07-18
SWA3775 Southwest Airlines 3 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4784 DEN → PHL Jul 26, 16:15 UTCJul 26, 19:05 UTC2h 50m
2026-07-25 SWA2726 LAS → SAN Jul 25, 23:45 UTCJul 26, 01:00 UTC1h 15m
2026-07-25 SWA1421 BWI → BDL Jul 25, 21:10 UTCJul 25, 22:40 UTC1h 30m
2026-07-25 SWA1421 BWI → BDL Jul 25, 21:07 UTCJul 25, 22:31 UTC1h 24m
2026-07-25 SWA1356 BOS → BWI Jul 25, 19:10 UTCJul 25, 20:00 UTC50m
2026-07-25 SWA1356 BOS → BWI Jul 25, 19:09 UTCJul 25, 19:57 UTC48m
2026-07-25 SWA3940 SJC → LGB Jul 25, 17:30 UTCJul 25, 18:10 UTC40m
2026-07-25 SWA3940 SJC → LGB Jul 25, 17:28 UTCJul 25, 18:09 UTC41m
2026-07-25 SWA1056 DEN → LGB Jul 25, 14:40 UTCJul 25, 16:25 UTC1h 45m
2026-07-25 SWA1056 DEN → LGB Jul 25, 14:39 UTCJul 25, 16:25 UTC1h 46m
2026-07-25 SWA1414 HOU → LGA Jul 25, 04:40 UTCJul 25, 06:00 UTC1h 20m
2026-07-25 SWA1414 HOU → LGA Jul 25, 04:37 UTCJul 25, 05:54 UTC1h 17m
2026-07-25 SWA1522 STL → DAL Jul 25, 02:20 UTCJul 25, 03:55 UTC1h 35m
2026-07-24 SWA2479 SJC → SEA Jul 24, 22:40 UTCJul 25, 01:05 UTC2h 25m
2026-07-24 SWA4915 MDW → BHM Jul 24, 19:10 UTCJul 24, 21:40 UTC2h 30m
2026-07-24 SWA4744 PHX → OAK Jul 24, 15:45 UTCJul 24, 17:50 UTC2h 5m
2026-07-24 SWA4744 PHX → OAK Jul 24, 15:40 UTCJul 24, 17:34 UTC1h 54m
2026-07-24 SWA4256 LAS → PHX Jul 24, 13:10 UTCJul 24, 14:25 UTC1h 15m
2026-07-24 SWA4878 SAN → HOU Jul 24, 06:40 UTCJul 24, 07:50 UTC1h 10m
2026-07-24 SWA2581 MDW → PIT Jul 24, 03:20 UTCJul 24, 05:45 UTC2h 25m
2026-07-24 SWA3291 BNA → BOS Jul 24, 00:10 UTCJul 24, 02:25 UTC2h 15m
2026-07-23 SWA1681 MHT → BWI Jul 23, 21:35 UTCJul 23, 23:00 UTC1h 25m
2026-07-23 SWA1681 MHT → BWI Jul 23, 21:32 UTCJul 23, 22:57 UTC1h 25m
2026-07-23 SWA3774 SAT → ELP Jul 23, 17:30 UTCJul 23, 19:25 UTC1h 55m
2026-07-23 SWA3630 DEN → PHL Jul 23, 14:53 UTCJul 23, 16:20 UTC1h 27m
2026-07-23 SWA3630 DEN → PHL Jul 23, 14:55 UTCJul 23, 16:25 UTC1h 30m
2026-07-23 SWA4920 BUR → OAK Jul 23, 12:15 UTCJul 23, 13:30 UTC1h 15m
2026-07-23 SWA2602 AUS → DAL Jul 23, 04:15 UTCJul 23, 05:15 UTC1h 0m
2026-07-23 SWA3206 BWI → LGA Jul 23, 02:37 UTCJul 23, 03:23 UTC46m
2026-07-23 SWA3206 BWI → LGA Jul 23, 02:40 UTCJul 23, 03:30 UTC50m
2026-07-22 SWA1249 ONT → SJC Jul 22, 22:10 UTCJul 23, 01:25 UTC3h 15m
2026-07-22 SWA3874 SJC → SAN Jul 22, 18:10 UTCJul 22, 20:35 UTC2h 25m
2026-07-22 SWA1725 MDW → OAK Jul 22, 14:45 UTCJul 22, 16:30 UTC1h 45m
2026-07-22 SWA1725 MDW → OAK Jul 22, 14:44 UTCJul 22, 16:53 UTC2h 9m
2026-07-22 SWA4 - Jul 22, 12:15 UTCJul 22, 12:50 UTC35m
2026-07-22 SWA4 HOU → DAL Jul 22, 12:10 UTCJul 22, 12:48 UTC38m
2026-07-22 SWA5080 MDW → RDU Jul 22, 00:45 UTCJul 22, 02:45 UTC2h 0m
2026-07-21 SWA5079 CMH → TPA Jul 21, 21:20 UTCJul 21, 23:25 UTC2h 5m
2026-07-21 SWA5078 - Jul 21, 18:35 UTCJul 21, 20:10 UTC1h 35m
2026-07-21 SWA5077 BWI → BOS Jul 21, 15:45 UTCJul 21, 17:20 UTC1h 35m
2026-07-21 SWA5077 BWI → BOS Jul 21, 15:44 UTCJul 21, 17:15 UTC1h 31m
2026-07-21 SWA4498 TUL → PHX Jul 21, 02:20 UTCJul 21, 05:00 UTC2h 40m
2026-07-21 SWA4498 TUL → PHX Jul 21, 02:16 UTCJul 21, 05:04 UTC2h 49m
2026-07-20 SWA3576 STL → DAL Jul 20, 22:50 UTCJul 21, 01:10 UTC2h 20m
2026-07-20 SWA3576 STL → DAL Jul 20, 22:45 UTCJul 21, 01:02 UTC2h 17m
2026-07-20 SWA4371 MHT → BWI Jul 20, 20:00 UTCJul 20, 21:50 UTC1h 50m
2026-07-20 SWA1151 - Jul 20, 17:40 UTCJul 20, 18:45 UTC1h 5m
2026-07-20 SWA4571 BNA → CLE Jul 20, 15:20 UTCJul 20, 16:30 UTC1h 10m
2026-07-20 SWA2447 LGA → BNA Jul 20, 11:50 UTCJul 20, 13:35 UTC1h 45m
2026-07-19 SWA2190 - Jul 19, 23:35 UTCJul 20, 03:05 UTC3h 30m

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 N8846Q page for operator, model, and routing details .

Mode-S AC2FEA frequently asked

What is Mode-S code AC2FEA?
AC2FEA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8846Q.
Where is Mode-S AC2FEA registered?
Mode-S code AC2FEA 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 AC2FEA broadcasting right now?
Yes. Mode-S AC2FEA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC2FEA, octal 53027752, decimal 11,284,458.
What flights does AC2FEA operate?
Mode-S AC2FEA has broadcast 20 distinct callsigns, including SWA1257, SWA2834, SWA2686, SWA1746, SWA3684.