Apparatus

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sensors Mode-S transponder

ABEC4D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8678E · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABEC4D
Octal
52766115
Decimal
11,267,149
Country
US
Tail
N8678E
Type
B738
Broadcasting now · callsign SWA103 · 35,000 ft
Flights observed
684
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

ABEC4D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABEC4D 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
SWA1277 - 9 2026-07-13
SWA510 - 8 2026-06-22
SWA2127 - 5 2026-07-12
SWA596 Southwest Airlines 4 2026-06-23
SWA321 Southwest Airlines 4 2026-04-21
SWA172 - 4 2026-04-13
SWA148 Southwest Airlines 4 2026-05-30
SWA146 Southwest Airlines 4 2026-05-26
SWA1221 Southwest Airlines 4 2026-04-13
SWA976 - 3 2026-06-26
SWA899 Southwest Airlines 3 2026-05-31
SWA4872 Southwest Airlines 3 2026-06-21
SWA4668 Southwest Airlines 3 2026-05-22
SWA4472 Southwest Airlines 3 2026-04-14
SWA4119 Southwest Airlines 3 2026-05-11
SWA410 Southwest Airlines 3 2026-05-03
SWA3958 Southwest Airlines 3 2026-06-12
SWA3658 - 3 2026-06-29
SWA3461 Southwest Airlines 3 2026-05-12
SWA3161 Southwest Airlines 3 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 SWA103 - Jul 15, 00:25 UTCJul 15, 01:15 UTC50m
2026-07-14 SWA3575 - Jul 14, 20:45 UTCJul 14, 23:00 UTC2h 14m
2026-07-14 SWA4045 - Jul 14, 17:15 UTCJul 14, 19:15 UTC2h 0m
2026-07-14 SWA4045 TPA → SAT Jul 14, 17:11 UTCJul 14, 19:38 UTC2h 27m
2026-07-14 SWA404 - Jul 14, 13:30 UTCJul 14, 15:40 UTC2h 10m
2026-07-14 SWA4167 - Jul 14, 10:25 UTCJul 14, 12:00 UTC1h 35m
2026-07-14 SWA4561 - Jul 14, 01:20 UTCJul 14, 02:25 UTC1h 5m
2026-07-13 SWA1277 DAL → BNA Jul 13, 22:25 UTCJul 13, 23:55 UTC1h 30m
2026-07-13 SWA1277 DAL → BNA Jul 13, 22:24 UTCJul 13, 23:46 UTC1h 22m
2026-07-13 SWA1277 - Jul 13, 19:45 UTCJul 13, 20:45 UTC1h 0m
2026-07-13 SWA1277 - Jul 13, 17:05 UTCJul 13, 18:50 UTC1h 45m
2026-07-13 SWA1277 SJC → LAS Jul 13, 14:45 UTCJul 13, 15:50 UTC1h 5m
2026-07-13 SWA2346 LAS → SJC Jul 13, 12:45 UTCJul 13, 13:40 UTC55m
2026-07-13 SWA2771 - Jul 13, 06:05 UTCJul 13, 06:55 UTC50m
2026-07-13 SWA2771 SAN → LAS Jul 13, 06:05 UTCJul 13, 06:58 UTC53m
2026-07-13 SWA1703 DEN → SAN Jul 13, 03:01 UTCJul 13, 04:45 UTC1h 45m
2026-07-12 SWA2557 - Jul 12, 22:25 UTCJul 13, 01:40 UTC3h 15m
2026-07-12 SWA2557 RIC → DEN Jul 12, 22:23 UTCJul 13, 01:32 UTC3h 9m
2026-07-12 SWA4530 - Jul 12, 19:01 UTCJul 12, 20:15 UTC1h 15m
2026-07-12 SWA668 - Jul 12, 16:05 UTCJul 12, 17:40 UTC1h 35m
2026-07-12 SWA2127 MCO → BUF Jul 12, 12:55 UTCJul 12, 15:05 UTC2h 10m
2026-07-12 SWA2127 MCO → BUF Jul 12, 12:55 UTCJul 12, 15:03 UTC2h 8m
2026-07-12 SWA212 ATL → MCO Jul 12, 10:45 UTCJul 12, 11:45 UTC1h 0m
2026-07-12 SWA212 ATL → MCO Jul 12, 10:45 UTCJul 12, 11:42 UTC57m
2026-07-12 SWA1943 - Jul 12, 00:50 UTCJul 12, 02:25 UTC1h 35m
2026-07-12 SWA1943 HOU → ATL Jul 12, 00:44 UTCJul 12, 02:18 UTC1h 34m
2026-07-11 SWA575 - Jul 11, 19:45 UTCJul 11, 23:40 UTC3h 55m
2026-07-11 SWA575 - Jul 11, 17:25 UTCJul 11, 18:20 UTC55m
2026-07-11 SWA3824 - Jul 11, 13:25 UTCJul 11, 16:00 UTC2h 35m
2026-07-11 SWA4729 - Jul 11, 10:30 UTCJul 11, 12:00 UTC1h 30m
2026-07-11 SWA446 BNA → ATL Jul 11, 00:45 UTCJul 11, 01:25 UTC40m
2026-07-10 SWA5047 - Jul 10, 20:10 UTCJul 10, 21:40 UTC1h 30m
2026-07-10 SWA5047 DAL → BNA Jul 10, 20:09 UTCJul 10, 21:32 UTC1h 23m
2026-07-10 SWA5046 - Jul 10, 17:50 UTCJul 10, 19:15 UTC1h 25m
2026-07-10 SWA5046 BNA → DAL Jul 10, 17:46 UTCJul 10, 19:18 UTC1h 32m
2026-07-10 SWA4003 TPA → BNA Jul 10, 14:40 UTCJul 10, 16:10 UTC1h 30m
2026-07-10 SWA4003 TPA → BNA Jul 10, 14:39 UTCJul 10, 16:06 UTC1h 27m
2026-07-10 SWA1119 - Jul 10, 11:30 UTCJul 10, 13:20 UTC1h 50m
2026-07-10 SWA2683 - Jul 10, 05:20 UTCJul 10, 10:00 UTC4h 40m
2026-07-09 SWA673 - Jul 9, 23:40 UTCJul 10, 03:55 UTC4h 15m
2026-07-09 SWA2983 MSY → BNA Jul 9, 21:00 UTCJul 9, 22:10 UTC1h 10m
2026-07-09 SWA2983 MSY → BNA Jul 9, 20:56 UTCJul 9, 22:08 UTC1h 12m
2026-07-09 SWA595 BNA → MSY Jul 9, 18:40 UTCJul 9, 19:45 UTC1h 5m
2026-07-09 SWA724 SEA → SJC Jul 9, 14:45 UTCJul 9, 17:00 UTC2h 15m
2026-07-09 SWA884 - Jul 9, 12:50 UTCJul 9, 13:50 UTC1h 0m
2026-07-09 SWA1891 - Jul 9, 09:35 UTCJul 9, 10:50 UTC1h 15m
2026-07-09 SWA4373 - Jul 9, 01:20 UTCJul 9, 02:30 UTC1h 10m
2026-07-08 SWA1284 DAL → BWI Jul 8, 21:50 UTCJul 9, 00:25 UTC2h 35m
2026-07-08 SWA936 RDU → DAL Jul 8, 18:15 UTCJul 8, 20:40 UTC2h 25m
2026-07-08 SWA936 RDU → DAL Jul 8, 18:15 UTCJul 8, 20:38 UTC2h 23m

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 N8678E page for operator, model, and routing details .

Mode-S ABEC4D frequently asked

What is Mode-S code ABEC4D?
ABEC4D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8678E.
Where is Mode-S ABEC4D registered?
Mode-S code ABEC4D 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 ABEC4D broadcasting right now?
Yes. Mode-S ABEC4D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABEC4D, octal 52766115, decimal 11,267,149.
What flights does ABEC4D operate?
Mode-S ABEC4D has broadcast 20 distinct callsigns, including SWA1277, SWA510, SWA2127, SWA596, SWA321.