Apparatus

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sensors Mode-S transponder

A1CE16

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N215WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1CE16
Octal
50347026
Decimal
10,604,054
Country
US
Tail
N215WN
Type
B737
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
780
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A1CE16.

Country allocation

The ICAO 24-bit address A1CE16 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
SWA285 - 9 2026-07-16
SWA1753 Southwest Airlines 8 2026-07-24
SWA738 Southwest Airlines 5 2026-07-26
SWA422 - 5 2026-06-19
SWA351 Southwest Airlines 5 2026-06-08
SWA2091 - 5 2026-07-14
SWA169 Southwest Airlines 5 2026-05-21
SWA1577 Southwest Airlines 5 2026-06-06
SWA534 Southwest Airlines 4 2026-06-03
SWA4347 Southwest Airlines 4 2026-05-14
SWA4020 Southwest Airlines 4 2026-04-13
SWA3185 - 4 2026-07-12
SWA2937 - 4 2026-06-27
SWA2782 - 4 2026-06-17
SWA2531 - 4 2026-06-28
SWA250 Southwest Airlines 4 2026-06-02
SWA236 - 4 2026-07-10
SWA223 Southwest Airlines 4 2026-04-17
SWA2068 - 4 2026-07-05
SWA1748 - 4 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1436 SJC → ONT Jul 26, 20:30 UTCJul 26, 21:30 UTC1h 0m
2026-07-26 SWA738 SAN → SJC Jul 26, 17:00 UTCJul 26, 19:30 UTC2h 30m
2026-07-26 SWA738 SAN → SJC Jul 26, 16:56 UTCJul 26, 19:25 UTC2h 29m
2026-07-26 SWA738 SAN → SJC Jul 26, 15:30 UTCJul 26, 16:10 UTC40m
2026-07-26 SWA738 SAN → SJC Jul 26, 12:25 UTCJul 26, 14:35 UTC2h 10m
2026-07-26 SWA738 SAN → SJC Jul 26, 10:15 UTCJul 26, 10:50 UTC35m
2026-07-26 SWA2678 SNA → SJC Jul 26, 01:10 UTCJul 26, 01:40 UTC30m
2026-07-25 SWA1470 LAS → SFO Jul 25, 22:20 UTCJul 25, 23:40 UTC1h 20m
2026-07-25 SWA1470 LAS → SFO Jul 25, 22:16 UTCJul 25, 23:33 UTC1h 17m
2026-07-25 SWA2947 LAS → SJC Jul 25, 20:00 UTCJul 25, 21:20 UTC1h 20m
2026-07-25 SWA4726 SAN → COS Jul 25, 17:05 UTCJul 25, 18:50 UTC1h 45m
2026-07-25 SWA4726 SAN → COS Jul 25, 16:59 UTCJul 25, 18:45 UTC1h 46m
2026-07-25 SWA3270 DEN → ABQ Jul 25, 14:55 UTCJul 25, 16:00 UTC1h 5m
2026-07-25 SWA2997 ONT → OAK Jul 25, 12:50 UTCJul 25, 13:30 UTC40m
2026-07-25 SWA2997 ONT → OAK Jul 25, 12:44 UTCJul 25, 13:43 UTC59m
2026-07-25 SWA420 BOS → STL Jul 25, 10:15 UTCJul 25, 11:25 UTC1h 10m
2026-07-25 SWA420 BOS → STL Jul 25, 10:12 UTCJul 25, 11:20 UTC1h 8m
2026-07-25 SWA1603 LAX → SJC Jul 25, 01:30 UTCJul 25, 03:05 UTC1h 35m
2026-07-24 SWA1603 LAX → SJC Jul 24, 22:30 UTCJul 25, 00:25 UTC1h 55m
2026-07-24 SWA824 TPA → IND Jul 24, 19:40 UTCJul 24, 21:30 UTC1h 50m
2026-07-24 SWA1753 PHX → SFO Jul 24, 16:55 UTCJul 24, 18:30 UTC1h 35m
2026-07-24 SWA3493 SJC → BUR Jul 24, 13:54 UTCJul 24, 15:46 UTC1h 52m
2026-07-24 SWA3493 SJC → BUR Jul 24, 13:55 UTCJul 24, 15:45 UTC1h 50m
2026-07-24 SWA1978 MSP → STL Jul 24, 02:00 UTCJul 24, 05:40 UTC3h 40m
2026-07-23 SWA4108 RSW → STL Jul 23, 23:40 UTCJul 24, 00:50 UTC1h 10m
2026-07-23 SWA4108 RSW → STL Jul 23, 21:25 UTCJul 23, 22:45 UTC1h 20m
2026-07-23 SWA1433 SAN → OAK Jul 23, 17:35 UTCJul 23, 20:10 UTC2h 35m
2026-07-23 SWA1433 SAN → OAK Jul 23, 17:32 UTCJul 23, 20:08 UTC2h 37m
2026-07-23 SWA4016 ATL → MCO Jul 23, 13:55 UTCJul 23, 16:15 UTC2h 20m
2026-07-23 SWA4016 ATL → MCO Jul 23, 13:53 UTCJul 23, 16:14 UTC2h 22m
2026-07-23 SWA769 MHT → MCO Jul 23, 10:35 UTCJul 23, 12:50 UTC2h 15m
2026-07-22 SWA1742 DEN → ONT Jul 22, 23:25 UTCJul 23, 00:15 UTC50m
2026-07-22 SWA1827 MDW → CVG Jul 22, 20:25 UTCJul 22, 21:40 UTC1h 15m
2026-07-22 SWA1827 MDW → CVG Jul 22, 20:20 UTCJul 22, 21:38 UTC1h 19m
2026-07-22 SWA1004 STL → LAS Jul 22, 18:25 UTCJul 22, 19:20 UTC55m
2026-07-22 SWA1004 STL → LAS Jul 22, 18:20 UTCJul 22, 19:16 UTC56m
2026-07-22 SWA1004 STL → LAS Jul 22, 15:00 UTCJul 22, 16:55 UTC1h 55m
2026-07-22 SWA2933 OAK → LAX Jul 22, 13:00 UTCJul 22, 14:05 UTC1h 5m
2026-07-22 SWA3121 SMF → BUR Jul 22, 11:15 UTCJul 22, 11:40 UTC25m
2026-07-22 SWA4087 MKE → SRQ Jul 22, 02:15 UTCJul 22, 04:05 UTC1h 50m
2026-07-22 SWA352 - Jul 22, 00:20 UTCJul 22, 01:05 UTC45m
2026-07-21 SWA352 AUS → ABQ Jul 21, 22:05 UTCJul 21, 23:25 UTC1h 20m
2026-07-21 SWA352 - Jul 21, 20:35 UTCJul 21, 21:05 UTC30m
2026-07-21 SWA25 DEN → DAL Jul 21, 17:55 UTCJul 21, 18:40 UTC45m
2026-07-21 SWA25 DEN → DAL Jul 21, 15:20 UTCJul 21, 16:25 UTC1h 5m
2026-07-21 SWA25 DEN → DAL Jul 21, 13:45 UTCJul 21, 14:30 UTC45m
2026-07-21 SWA1783 BOS → BWI Jul 21, 11:30 UTCJul 21, 12:40 UTC1h 10m
2026-07-21 SWA1783 BOS → BWI Jul 21, 11:25 UTCJul 21, 12:34 UTC1h 9m
2026-07-21 SWA4822 HOU → LAS Jul 21, 01:05 UTCJul 21, 02:10 UTC1h 5m
2026-07-21 SWA4822 HOU → LAS Jul 21, 01:05 UTCJul 21, 02:05 UTC1h 0m

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 N215WN page for operator, model, and routing details .

Mode-S A1CE16 frequently asked

What is Mode-S code A1CE16?
A1CE16 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N215WN.
Where is Mode-S A1CE16 registered?
Mode-S code A1CE16 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 A1CE16 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1CE16, octal 50347026, decimal 10,604,054.
What flights does A1CE16 operate?
Mode-S A1CE16 has broadcast 20 distinct callsigns, including SWA285, SWA1753, SWA738, SWA422, SWA351.