Apparatus

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sensors Mode-S transponder

AC212D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8807L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC212D
Octal
53020455
Decimal
11,280,685
Country
US
Tail
N8807L
Type
B38M
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
739
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S AC212D.

Country allocation

The ICAO 24-bit address AC212D 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
SWA507 - 6 2026-07-01
SWA3753 - 5 2026-06-30
SWA3547 Southwest Airlines 5 2026-05-06
SWA734 Southwest Airlines 4 2026-04-15
SWA642 Southwest Airlines 4 2026-05-18
SWA436 - 4 2026-06-28
SWA3812 Southwest Airlines 4 2026-04-16
SWA3721 - 4 2026-07-15
SWA3403 Southwest Airlines 4 2026-07-25
SWA2970 - 4 2026-06-22
SWA1696 Southwest Airlines 4 2026-05-19
SWA781 - 3 2026-07-13
SWA579 Southwest Airlines 3 2026-04-13
SWA4806 Southwest Airlines 3 2026-05-14
SWA4470 - 3 2026-07-17
SWA4128 - 3 2026-07-16
SWA4105 Southwest Airlines 3 2026-07-18
SWA3848 Southwest Airlines 3 2026-05-12
SWA3435 Southwest Airlines 3 2026-06-03
SWA333 - 3 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2743 STL → MDW Jul 26, 19:10 UTCJul 26, 21:15 UTC2h 5m
2026-07-26 SWA3693 SJC → PDX Jul 26, 15:40 UTCJul 26, 17:45 UTC2h 5m
2026-07-26 SWA3693 SJC → PDX Jul 26, 13:05 UTCJul 26, 14:20 UTC1h 15m
2026-07-26 SWA3742 SNA → OAK Jul 26, 01:30 UTCJul 26, 04:30 UTC3h 0m
2026-07-25 SWA3744 IND → RSW Jul 25, 22:30 UTCJul 26, 00:10 UTC1h 40m
2026-07-25 SWA2099 SAN → PHX Jul 25, 20:00 UTCJul 25, 21:20 UTC1h 20m
2026-07-25 SWA3403 PWM → BWI Jul 25, 16:35 UTCJul 25, 18:30 UTC1h 55m
2026-07-25 SWA3403 PWM → BWI Jul 25, 16:32 UTCJul 25, 18:23 UTC1h 51m
2026-07-25 SWA2816 DAL → LGA Jul 25, 13:10 UTCJul 25, 15:10 UTC2h 0m
2026-07-25 SWA3743 MCO → CMH Jul 25, 10:35 UTCJul 25, 11:40 UTC1h 5m
2026-07-25 SWA3743 MCO → CMH Jul 25, 10:32 UTCJul 25, 11:39 UTC1h 7m
2026-07-25 SWA4880 ATL → STL Jul 25, 03:35 UTCJul 25, 04:45 UTC1h 10m
2026-07-25 SWA4444 LGA → BWI Jul 25, 01:20 UTCJul 25, 02:35 UTC1h 15m
2026-07-25 SWA4444 LGA → BWI Jul 25, 01:17 UTCJul 25, 02:33 UTC1h 16m
2026-07-24 SWA4097 OAK → BUR Jul 24, 21:30 UTCJul 25, 00:10 UTC2h 40m
2026-07-24 SWA3698 LAS → SAT Jul 24, 19:15 UTCJul 24, 20:20 UTC1h 5m
2026-07-24 SWA3860 STL → MDW Jul 24, 17:15 UTCJul 24, 18:10 UTC55m
2026-07-24 SWA3860 STL → MDW Jul 24, 17:13 UTCJul 24, 18:05 UTC52m
2026-07-24 SWA1745 SAN → SJC Jul 24, 14:25 UTCJul 24, 16:20 UTC1h 55m
2026-07-24 SWA4018 LGB → SJC Jul 24, 09:15 UTCJul 24, 12:25 UTC3h 10m
2026-07-24 SWA4018 LGB → SJC Jul 24, 09:11 UTCJul 24, 12:15 UTC3h 4m
2026-07-24 SWA1123 STL → BOS Jul 24, 00:10 UTCJul 24, 02:05 UTC1h 55m
2026-07-23 SWA811 BWI → PUJ Jul 23, 13:15 UTCJul 23, 22:10 UTC8h 55m
2026-07-23 SWA1153 LAS → LIH Jul 23, 10:10 UTCJul 23, 11:00 UTC50m
2026-07-23 SWA909 LGA → ATL Jul 23, 01:35 UTCJul 23, 02:30 UTC55m
2026-07-22 SWA478 OAK → SAN Jul 22, 23:35 UTCJul 23, 00:30 UTC55m
2026-07-22 SWA478 OAK → SAN Jul 22, 21:25 UTCJul 22, 22:25 UTC1h 0m
2026-07-22 SWA1860 MSP → MDW Jul 22, 19:15 UTCJul 22, 20:05 UTC50m
2026-07-22 SWA442 BWI → BOS Jul 22, 16:30 UTCJul 22, 18:05 UTC1h 35m
2026-07-22 SWA4149 DEN → SAT Jul 22, 13:30 UTCJul 22, 15:15 UTC1h 45m
2026-07-22 SWA4149 DEN → SAT Jul 22, 13:29 UTCJul 22, 15:11 UTC1h 42m
2026-07-22 SWA4568 DEN → RNO Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-22 SWA474 BOI → OAK Jul 22, 01:10 UTCJul 22, 02:25 UTC1h 15m
2026-07-21 SWA3237 SJC → SNA Jul 21, 20:40 UTCJul 21, 23:50 UTC3h 10m
2026-07-21 SWA2311 LAS → PHX Jul 21, 18:40 UTCJul 21, 19:20 UTC40m
2026-07-21 SWA2336 DEN → SFO Jul 21, 16:50 UTCJul 21, 17:35 UTC45m
2026-07-21 SWA2336 DEN → SFO Jul 21, 11:25 UTCJul 21, 15:20 UTC3h 55m
2026-07-21 SWA4874 PHX → BWI Jul 21, 05:15 UTCJul 21, 09:40 UTC4h 25m
2026-07-21 SWA3653 SFO → SAN Jul 21, 02:45 UTCJul 21, 04:00 UTC1h 15m
2026-07-21 SWA3533 ATL → DEN Jul 21, 00:45 UTCJul 21, 01:50 UTC1h 5m
2026-07-21 SWA3533 ATL → DEN Jul 21, 00:45 UTCJul 21, 01:45 UTC1h 0m
2026-07-20 SWA4774 DEN → CVG Jul 20, 22:40 UTCJul 20, 23:55 UTC1h 15m
2026-07-20 SWA2298 - Jul 20, 20:30 UTCJul 20, 21:30 UTC1h 0m
2026-07-20 SWA2298 LAS → ONT Jul 20, 19:05 UTCJul 20, 19:40 UTC35m
2026-07-20 SWA2695 SAN → LAS Jul 20, 17:00 UTCJul 20, 17:52 UTC52m
2026-07-20 SWA2695 - Jul 20, 17:00 UTCJul 20, 17:55 UTC55m
2026-07-20 SWA2695 MCO → SAN Jul 20, 11:20 UTCJul 20, 15:40 UTC4h 20m
2026-07-19 SWA1235 BWI → MHT Jul 19, 21:55 UTCJul 19, 23:50 UTC1h 55m
2026-07-19 SWA1235 BWI → MHT Jul 19, 21:29 UTCJul 19, 23:48 UTC2h 19m
2026-07-19 SWA821 - Jul 19, 16:40 UTCJul 19, 18:15 UTC1h 35m

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 N8807L page for operator, model, and routing details .

Mode-S AC212D frequently asked

What is Mode-S code AC212D?
AC212D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8807L.
Where is Mode-S AC212D registered?
Mode-S code AC212D 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 AC212D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC212D, octal 53020455, decimal 11,280,685.
What flights does AC212D operate?
Mode-S AC212D has broadcast 20 distinct callsigns, including SWA507, SWA3753, SWA3547, SWA734, SWA642.