Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC7218

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9004H · operated by SOUTHWEST AIRLINES CO.

Hex
AC7218
Octal
53071030
Decimal
11,301,400
Country
US
Tail
N9004H
No current signal · last broadcast 28d ago
Flights observed
483
Distinct callsigns
20
Country
US
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S AC7218.

Country allocation

The ICAO 24-bit address AC7218 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
SWA2189 Southwest Airlines 8 2026-07-04
SWA1039 - 7 2026-07-18
SWA2718 - 5 2026-07-15
SWA193 - 5 2026-06-27
SWA488 - 4 2026-07-02
SWA4428 - 4 2026-07-16
SWA2968 - 4 2026-06-24
SWA1593 - 4 2026-07-01
SWA4874 Southwest Airlines 3 2026-06-24
SWA446 Southwest Airlines 3 2026-07-19
SWA3193 - 3 2026-07-13
SWA3137 Southwest Airlines 3 2026-05-25
SWA2561 - 3 2026-07-15
SWA2364 - 3 2026-07-12
SWA2220 Southwest Airlines 3 2026-05-25
SWA2205 Southwest Airlines 3 2026-07-24
SWA2147 - 3 2026-06-21
SWA2072 - 3 2026-07-03
SWA1411 - 3 2026-07-15
SWA1271 Southwest Airlines 3 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1226 SJC → ONT Jul 26, 20:45 UTCJul 26, 22:00 UTC1h 15m
2026-07-26 SWA2192 STL → DEN Jul 26, 18:05 UTCJul 26, 19:20 UTC1h 15m
2026-07-26 SWA2192 STL → DEN Jul 26, 15:30 UTCJul 26, 16:55 UTC1h 25m
2026-07-26 SWA1769 MDW → MCO Jul 26, 13:00 UTCJul 26, 14:25 UTC1h 25m
2026-07-26 SWA1769 MDW → MCO Jul 26, 12:59 UTCJul 26, 14:21 UTC1h 23m
2026-07-26 SWA2940 HOU → DCA Jul 26, 02:20 UTCJul 26, 03:30 UTC1h 10m
2026-07-25 SWA4159 SJC → LAS Jul 25, 22:30 UTCJul 26, 01:00 UTC2h 30m
2026-07-25 SWA4159 SJC → LAS Jul 25, 20:05 UTCJul 25, 21:15 UTC1h 10m
2026-07-25 SWA1853 SJC → RNO Jul 25, 16:30 UTCJul 25, 18:45 UTC2h 15m
2026-07-25 SWA1853 SJC → RNO Jul 25, 16:27 UTCJul 25, 18:45 UTC2h 18m
2026-07-25 SWA945 SAN → OAK Jul 25, 13:05 UTCJul 25, 15:10 UTC2h 5m
2026-07-25 SWA4680 SJC → SNA Jul 25, 10:05 UTCJul 25, 10:49 UTC44m
2026-07-25 SWA4680 SJC → SNA Jul 25, 10:05 UTCJul 25, 10:55 UTC50m
2026-07-25 SWA1081 LAS → OAK Jul 25, 03:35 UTCJul 25, 04:20 UTC45m
2026-07-24 SWA2205 BWI → DEN Jul 24, 22:35 UTCJul 25, 02:35 UTC4h 0m
2026-07-24 SWA2205 BWI → DEN Jul 24, 22:33 UTCJul 25, 02:30 UTC3h 57m
2026-07-24 SWA2205 BWI → DEN Jul 24, 19:35 UTCJul 24, 20:45 UTC1h 10m
2026-07-24 SWA2680 MDW → DAL Jul 24, 16:55 UTCJul 24, 18:20 UTC1h 25m
2026-07-24 SWA2680 MDW → DAL Jul 24, 11:35 UTCJul 24, 15:15 UTC3h 40m
2026-07-24 SWA2821 MCI → OAK Jul 24, 02:20 UTCJul 24, 04:15 UTC1h 55m
2026-07-23 SWA1447 OGG → SJC Jul 23, 23:40 UTCJul 24, 01:15 UTC1h 35m
2026-07-23 SWA3515 LGB → DAL Jul 23, 21:15 UTCJul 23, 22:20 UTC1h 5m
2026-07-23 SWA856 PIT → DAL Jul 23, 18:20 UTCJul 23, 20:05 UTC1h 45m
2026-07-23 SWA2571 DAL → MDW Jul 23, 16:00 UTCJul 23, 17:05 UTC1h 5m
2026-07-23 SWA2571 DAL → MDW Jul 23, 15:58 UTCJul 23, 16:59 UTC1h 2m
2026-07-23 SWA1343 - Jul 23, 13:45 UTCJul 23, 14:55 UTC1h 10m
2026-07-23 SWA1343 DAL → MCI Jul 23, 13:41 UTCJul 23, 14:54 UTC1h 13m
2026-07-23 SWA4458 STL → OMA Jul 23, 11:20 UTCJul 23, 12:35 UTC1h 15m
2026-07-23 SWA1088 MSY → LGA Jul 23, 04:05 UTCJul 23, 05:10 UTC1h 5m
2026-07-23 SWA1088 MSY → LGA Jul 23, 04:00 UTCJul 23, 05:29 UTC1h 29m
2026-07-22 SWA1088 MSY → LGA Jul 22, 22:15 UTCJul 23, 02:55 UTC4h 40m
2026-07-22 SWA2247 SJC → DAL Jul 22, 19:30 UTCJul 22, 20:40 UTC1h 10m
2026-07-22 SWA2247 SJC → DAL Jul 22, 19:29 UTCJul 22, 20:44 UTC1h 16m
2026-07-22 SWA884 SJC → PHX Jul 22, 17:10 UTCJul 22, 18:10 UTC1h 0m
2026-07-22 SWA2612 MCO → BWI Jul 22, 13:45 UTCJul 22, 15:30 UTC1h 45m
2026-07-22 SWA4358 BUR → OAK Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 SWA2371 SAN → SMF Jul 22, 02:05 UTCJul 22, 04:55 UTC2h 50m
2026-07-21 SWA137 STL → JAX Jul 21, 23:40 UTCJul 22, 00:50 UTC1h 10m
2026-07-21 SWA570 MDW → MSP Jul 21, 20:35 UTCJul 21, 22:40 UTC2h 5m
2026-07-21 SWA3366 BNA → SAT Jul 21, 15:45 UTCJul 21, 19:30 UTC3h 45m
2026-07-21 SWA1384 BWI → PIT Jul 21, 11:40 UTCJul 21, 13:35 UTC1h 55m
2026-07-21 SWA2792 - Jul 21, 00:35 UTCJul 21, 02:25 UTC1h 50m
2026-07-20 SWA4106 BOS → MDW Jul 20, 21:05 UTCJul 20, 23:10 UTC2h 5m
2026-07-20 SWA3690 DEN → BOS Jul 20, 16:17 UTCJul 20, 19:43 UTC3h 27m
2026-07-20 SWA3690 DEN → BOS Jul 20, 16:20 UTCJul 20, 19:50 UTC3h 30m
2026-07-20 SWA4156 BOS → DEN Jul 20, 10:40 UTCJul 20, 14:40 UTC4h 0m
2026-07-20 SWA4156 BOS → DEN Jul 20, 10:39 UTCJul 20, 14:34 UTC3h 55m
2026-07-20 SWA3521 LAX → SJC Jul 20, 00:20 UTCJul 20, 02:05 UTC1h 45m
2026-07-20 SWA3521 LAX → SJC Jul 20, 00:17 UTCJul 20, 02:06 UTC1h 50m
2026-07-19 SWA446 LGB → SJC Jul 19, 18:50 UTCJul 19, 22:30 UTC3h 40m

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 N9004H page for operator, model, and routing details .

Mode-S AC7218 frequently asked

What is Mode-S code AC7218?
AC7218 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9004H.
Where is Mode-S AC7218 registered?
Mode-S code AC7218 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 AC7218 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7218, octal 53071030, decimal 11,301,400.
What flights does AC7218 operate?
Mode-S AC7218 has broadcast 20 distinct callsigns, including SWA2189, SWA1039, SWA2718, SWA193, SWA488.