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sensors Mode-S transponder

AC694F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8991S · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC694F
Octal
53064517
Decimal
11,299,151
Country
US
Tail
N8991S
Type
B38M
Broadcasting now · callsign SWA2941 · 33,925 ft
Flights observed
783
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Current position

AC694F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC694F 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
SWA1092 - 6 2026-06-23
SWA4101 Southwest Airlines 5 2026-05-31
SWA1869 Southwest Airlines 5 2026-04-22
SWA4501 Southwest Airlines 4 2026-05-09
SWA4102 Southwest Airlines 4 2026-05-08
SWA3584 Southwest Airlines 4 2026-07-17
SWA3014 - 4 2026-06-20
SWA2863 Southwest Airlines 4 2026-07-24
SWA2350 Southwest Airlines 4 2026-06-10
SWA2311 Southwest Airlines 4 2026-07-23
SWA1595 Southwest Airlines 4 2026-04-17
SWA1567 - 4 2026-07-15
SWA1409 Southwest Airlines 4 2026-05-09
SWA1103 Southwest Airlines 4 2026-07-22
SWA1002 Southwest Airlines 4 2026-05-25
SWA981 Southwest Airlines 3 2026-06-04
SWA7 Southwest Airlines 3 2026-06-09
SWA579 Southwest Airlines 3 2026-04-20
SWA45 Southwest Airlines 3 2026-05-20
SWA4329 - 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1241 SJC → DEN Jul 26, 16:35 UTCJul 26, 20:45 UTC4h 10m
2026-07-26 SWA1182 BWI → BOS Jul 26, 11:50 UTCJul 26, 15:05 UTC3h 15m
2026-07-26 SWA2469 SAN → OAK Jul 26, 01:30 UTCJul 26, 03:15 UTC1h 45m
2026-07-25 SWA2041 BOS → MDW Jul 25, 22:45 UTCJul 26, 00:25 UTC1h 40m
2026-07-25 SWA3081 DCA → MSY Jul 25, 18:05 UTCJul 25, 21:25 UTC3h 20m
2026-07-25 SWA3081 DCA → MSY Jul 25, 18:05 UTCJul 25, 21:20 UTC3h 15m
2026-07-25 SWA2700 BWI → BDL Jul 25, 12:49 UTCJul 25, 16:27 UTC3h 39m
2026-07-25 SWA2700 BWI → BDL Jul 25, 12:50 UTCJul 25, 16:30 UTC3h 40m
2026-07-25 SWA1959 SAN → SJC Jul 25, 10:25 UTCJul 25, 11:20 UTC55m
2026-07-25 SWA1341 STL → LGA Jul 25, 06:10 UTCJul 25, 06:55 UTC45m
2026-07-25 SWA113 MIA → DEN Jul 25, 04:00 UTCJul 25, 05:20 UTC1h 20m
2026-07-25 SWA3660 SAN → SJC Jul 25, 02:00 UTCJul 25, 02:40 UTC40m
2026-07-24 SWA3660 SAN → SJC Jul 24, 22:40 UTCJul 25, 00:25 UTC1h 45m
2026-07-24 SWA3660 SAN → SJC Jul 24, 19:00 UTCJul 24, 21:30 UTC2h 30m
2026-07-24 SWA2559 PHX → OAK Jul 24, 14:50 UTCJul 24, 17:20 UTC2h 30m
2026-07-24 SWA2559 PHX → OAK Jul 24, 14:46 UTCJul 24, 17:15 UTC2h 29m
2026-07-24 SWA2559 PHX → OAK Jul 24, 12:15 UTCJul 24, 13:40 UTC1h 25m
2026-07-24 SWA2863 SJC → LGB Jul 24, 06:10 UTCJul 24, 06:55 UTC45m
2026-07-24 SWA2863 SJC → LGB Jul 24, 02:05 UTCJul 24, 05:10 UTC3h 5m
2026-07-23 SWA3297 BWI → MKE Jul 23, 22:00 UTCJul 23, 23:45 UTC1h 45m
2026-07-23 SWA3297 BWI → MKE Jul 23, 21:59 UTCJul 24, 00:54 UTC2h 55m
2026-07-23 SWA2311 LAS → PHX Jul 23, 20:05 UTCJul 23, 20:50 UTC45m
2026-07-23 SWA2311 LAS → PHX Jul 23, 20:02 UTCJul 23, 20:50 UTC49m
2026-07-23 SWA2311 LAS → PHX Jul 23, 18:00 UTCJul 23, 19:05 UTC1h 5m
2026-07-23 SWA2978 MCO → MSY Jul 23, 15:15 UTCJul 23, 16:40 UTC1h 25m
2026-07-23 SWA4287 FLL → SJU Jul 23, 11:50 UTCJul 23, 13:50 UTC2h 0m
2026-07-23 SWA4287 FLL → SJU Jul 23, 11:45 UTCJul 23, 13:50 UTC2h 6m
2026-07-23 SWA2055 DEN → SFO Jul 23, 03:15 UTCJul 23, 04:30 UTC1h 15m
2026-07-23 SWA2078 - Jul 23, 01:00 UTCJul 23, 01:45 UTC45m
2026-07-23 SWA2078 ATL → BNA Jul 23, 00:59 UTCJul 23, 01:37 UTC38m
2026-07-22 SWA4150 ONT → SMF Jul 22, 22:15 UTCJul 22, 23:55 UTC1h 40m
2026-07-22 SWA2147 SFO → BUR Jul 22, 19:00 UTCJul 22, 20:40 UTC1h 40m
2026-07-22 SWA2147 SFO → BUR Jul 22, 18:55 UTCJul 22, 20:36 UTC1h 42m
2026-07-22 SWA3319 SLC → DEN Jul 22, 16:15 UTCJul 22, 17:55 UTC1h 40m
2026-07-22 SWA3790 LAS → SJC Jul 22, 13:45 UTCJul 22, 15:00 UTC1h 15m
2026-07-22 SWA2615 DAL → MDW Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 SWA2615 DAL → MDW Jul 22, 10:17 UTCJul 22, 12:20 UTC2h 3m
2026-07-22 SWA3728 DCA → DAL Jul 22, 04:35 UTCJul 22, 05:20 UTC45m
2026-07-22 SWA3728 DCA → DAL Jul 22, 02:45 UTCJul 22, 02:55 UTC10m
2026-07-22 SWA1103 OAK → MDW Jul 22, 00:40 UTCJul 22, 00:55 UTC15m
2026-07-21 SWA1103 OAK → MDW Jul 21, 20:50 UTCJul 21, 23:00 UTC2h 10m
2026-07-21 SWA1345 - Jul 21, 17:30 UTCJul 21, 19:10 UTC1h 40m
2026-07-21 SWA3734 STL → BNA Jul 21, 15:30 UTCJul 21, 16:15 UTC45m
2026-07-21 SWA3662 DEN → PHL Jul 21, 13:00 UTCJul 21, 14:35 UTC1h 35m
2026-07-21 SWA3662 DEN → PHL Jul 21, 12:55 UTCJul 21, 14:31 UTC1h 36m
2026-07-21 SWA4023 LAS → RNO Jul 21, 09:55 UTCJul 21, 11:45 UTC1h 50m
2026-07-21 SWA3731 DEN → BWI Jul 21, 04:15 UTCJul 21, 05:05 UTC50m
2026-07-21 SWA3731 DEN → BWI Jul 21, 02:30 UTCJul 21, 02:45 UTC15m
2026-07-21 SWA3731 DEN → BWI Jul 21, 02:28 UTCJul 21, 05:04 UTC2h 36m
2026-07-21 SWA1103 OAK → MDW Jul 21, 00:55 UTCJul 21, 01:15 UTC20m

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 N8991S page for operator, model, and routing details .

Mode-S AC694F frequently asked

What is Mode-S code AC694F?
AC694F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8991S.
Where is Mode-S AC694F registered?
Mode-S code AC694F 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 AC694F broadcasting right now?
Yes. Mode-S AC694F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC694F, octal 53064517, decimal 11,299,151.
What flights does AC694F operate?
Mode-S AC694F has broadcast 20 distinct callsigns, including SWA1092, SWA4101, SWA1869, SWA4501, SWA4102.