Apparatus

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sensors Mode-S transponder

AC27A6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8820L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC27A6
Octal
53023646
Decimal
11,282,342
Country
US
Tail
N8820L
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
666
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AC27A6.

Country allocation

The ICAO 24-bit address AC27A6 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
SWA4940 Southwest Airlines 4 2026-06-09
SWA4413 Southwest Airlines 4 2026-06-11
SWA3521 Southwest Airlines 4 2026-06-01
SWA255 - 4 2026-07-04
SWA202 Southwest Airlines 4 2026-04-16
SWA1918 Southwest Airlines 4 2026-04-26
SWA1583 - 4 2026-06-29
SWA1477 - 4 2026-06-28
SWA1266 Southwest Airlines 4 2026-05-13
SWA1199 Southwest Airlines 4 2026-04-13
SWA1171 - 4 2026-07-07
SWA961 Southwest Airlines 3 2026-06-13
SWA822 Southwest Airlines 3 2026-04-28
SWA4466 - 3 2026-06-20
SWA4214 - 3 2026-04-13
SWA4205 Southwest Airlines 3 2026-05-30
SWA3936 Southwest Airlines 3 2026-05-25
SWA383 Southwest Airlines 3 2026-04-15
SWA3722 Southwest Airlines 3 2026-06-07
SWA3685 - 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA1808 - Jul 14, 02:35 UTCJul 14, 03:30 UTC55m
2026-07-14 SWA1312 - Jul 14, 00:15 UTCJul 14, 01:15 UTC1h 0m
2026-07-13 SWA1184 - Jul 13, 20:25 UTCJul 13, 22:25 UTC2h 0m
2026-07-13 SWA1508 DEN → CMH Jul 13, 16:50 UTCJul 13, 19:20 UTC2h 30m
2026-07-13 SWA499 - Jul 13, 13:10 UTCJul 13, 15:20 UTC2h 10m
2026-07-13 SWA1141 - Jul 13, 10:35 UTCJul 13, 11:45 UTC1h 10m
2026-07-13 SWA1141 CHS → BNA Jul 13, 10:31 UTCJul 13, 11:37 UTC1h 6m
2026-07-13 SWA2562 - Jul 13, 01:50 UTCJul 13, 03:25 UTC1h 35m
2026-07-12 SWA4746 LGA → MDW Jul 12, 22:45 UTCJul 13, 00:35 UTC1h 50m
2026-07-12 SWA4441 DEN → LGA Jul 12, 17:55 UTCJul 12, 21:15 UTC3h 20m
2026-07-12 SWA1866 - Jul 12, 14:20 UTCJul 12, 16:15 UTC1h 55m
2026-07-12 SWA1866 MDW → DEN Jul 12, 14:17 UTCJul 12, 16:14 UTC1h 57m
2026-07-12 SWA1866 - Jul 12, 10:30 UTCJul 12, 13:10 UTC2h 40m
2026-07-12 SWA46 - Jul 12, 01:05 UTCJul 12, 03:20 UTC2h 15m
2026-07-11 SWA46 - Jul 11, 23:25 UTCJul 12, 00:05 UTC40m
2026-07-11 SWA3592 - Jul 11, 20:05 UTCJul 11, 22:15 UTC2h 10m
2026-07-11 SWA3592 SAV → BNA Jul 11, 20:02 UTCJul 11, 22:18 UTC2h 16m
2026-07-11 SWA4103 - Jul 11, 17:35 UTCJul 11, 19:00 UTC1h 25m
2026-07-11 SWA4103 ECP → IND Jul 11, 17:32 UTCJul 11, 18:59 UTC1h 27m
2026-07-11 SWA966 - Jul 11, 14:45 UTCJul 11, 16:30 UTC1h 45m
2026-07-11 SWA1181 - Jul 11, 12:10 UTCJul 11, 13:45 UTC1h 35m
2026-07-11 SWA1181 JAX → BWI Jul 11, 12:06 UTCJul 11, 13:41 UTC1h 35m
2026-07-11 SWA2792 - Jul 11, 00:50 UTCJul 11, 02:45 UTC1h 55m
2026-07-10 SWA4106 BOS → MDW Jul 10, 21:20 UTCJul 10, 23:35 UTC2h 15m
2026-07-10 SWA3690 DEN → BOS Jul 10, 16:35 UTCJul 10, 20:00 UTC3h 25m
2026-07-10 SWA4156 BOS → DEN Jul 10, 10:45 UTCJul 10, 14:40 UTC3h 55m
2026-07-10 SWA459 - Jul 10, 01:50 UTCJul 10, 04:00 UTC2h 10m
2026-07-10 SWA459 BNA → BOS Jul 10, 01:48 UTCJul 10, 04:03 UTC2h 16m
2026-07-09 SWA4344 MSY → BNA Jul 9, 23:25 UTCJul 10, 00:40 UTC1h 15m
2026-07-09 SWA2577 MSY → LAX Jul 9, 20:50 UTCJul 9, 22:25 UTC1h 35m
2026-07-09 SWA2577 MSY → LAX Jul 9, 20:48 UTCJul 9, 22:23 UTC1h 35m
2026-07-09 SWA3009 BNA → MYR Jul 9, 18:00 UTCJul 9, 19:30 UTC1h 30m
2026-07-09 SWA366 AUS → MSY Jul 9, 16:05 UTCJul 9, 17:05 UTC1h 0m
2026-07-09 SWA366 AUS → MSY Jul 9, 16:04 UTCJul 9, 17:05 UTC1h 1m
2026-07-09 SWA4149 - Jul 9, 13:20 UTCJul 9, 14:55 UTC1h 35m
2026-07-09 SWA3418 - Jul 9, 10:50 UTCJul 9, 12:05 UTC1h 15m
2026-07-09 SWA3810 STL → RDU Jul 9, 00:15 UTCJul 9, 01:45 UTC1h 30m
2026-07-09 SWA3810 STL → RDU Jul 9, 00:13 UTCJul 9, 01:46 UTC1h 33m
2026-07-08 SWA1285 LAS → STL Jul 8, 20:10 UTCJul 8, 22:50 UTC2h 40m
2026-07-08 SWA1285 SMF → LAS Jul 8, 18:00 UTCJul 8, 19:05 UTC1h 5m
2026-07-08 SWA2885 PHX → SMF Jul 8, 15:25 UTCJul 8, 16:55 UTC1h 30m
2026-07-08 SWA2885 PHX → SMF Jul 8, 15:22 UTCJul 8, 16:55 UTC1h 33m
2026-07-08 SWA2885 OKC → PHX Jul 8, 12:25 UTCJul 8, 14:10 UTC1h 45m
2026-07-08 SWA608 - Jul 8, 03:30 UTCJul 8, 04:50 UTC1h 20m
2026-07-08 SWA2157 - Jul 8, 00:45 UTCJul 8, 01:55 UTC1h 10m
2026-07-07 SWA2502 - Jul 7, 21:40 UTCJul 7, 23:40 UTC2h 0m
2026-07-07 SWA4719 MCO → AUS Jul 7, 17:55 UTCJul 7, 20:00 UTC2h 5m
2026-07-07 SWA1171 - Jul 7, 14:50 UTCJul 7, 16:40 UTC1h 50m
2026-07-07 SWA1171 BWI → MCO Jul 7, 14:48 UTCJul 7, 16:36 UTC1h 48m
2026-07-07 SWA3797 - Jul 7, 10:40 UTCJul 7, 13:25 UTC2h 45m

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 N8820L page for operator, model, and routing details .

Mode-S AC27A6 frequently asked

What is Mode-S code AC27A6?
AC27A6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8820L.
Where is Mode-S AC27A6 registered?
Mode-S code AC27A6 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 AC27A6 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 AC27A6, octal 53023646, decimal 11,282,342.
What flights does AC27A6 operate?
Mode-S AC27A6 has broadcast 20 distinct callsigns, including SWA4940, SWA4413, SWA3521, SWA255, SWA202.