Apparatus

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sensors Mode-S transponder

AC048D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8735L · BOEING 737 MAX 8 · operated by BANK OF UTAH TRUSTEE

Hex
AC048D
Octal
53002215
Decimal
11,273,357
Country
US
Tail
N8735L
Type
B38M
No current signal · last broadcast Jul 26, 18:25 UTC
Flights observed
681
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:25 UTC

Last known position

Most recent position reported by Mode-S AC048D.

Country allocation

The ICAO 24-bit address AC048D 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
SWA609 - 5 2026-06-19
SWA3606 Southwest Airlines 5 2026-05-17
SWA2122 - 5 2026-07-07
SWA1916 - 5 2026-07-03
SWA1178 Southwest Airlines 5 2026-05-29
SWA750 - 4 2026-07-05
SWA679 Southwest Airlines 4 2026-07-20
SWA4706 Southwest Airlines 4 2026-06-26
SWA3843 Southwest Airlines 4 2026-04-17
SWA377 Southwest Airlines 4 2026-06-16
SWA3573 - 4 2026-06-19
SWA3423 Southwest Airlines 4 2026-05-27
SWA3093 Southwest Airlines 4 2026-07-25
SWA3053 Southwest Airlines 4 2026-06-15
SWA3008 Southwest Airlines 4 2026-05-12
SWA2844 Southwest Airlines 4 2026-05-02
SWA2273 Southwest Airlines 4 2026-06-02
SWA1865 - 4 2026-07-02
SWA165 Southwest Airlines 4 2026-05-04
SWA808 Southwest Airlines 3 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2262 BDL → BWI Jul 26, 17:25 UTCJul 26, 18:25 UTC1h 0m
2026-07-26 SWA656 PHX → SAN Jul 26, 12:15 UTCJul 26, 14:05 UTC1h 50m
2026-07-26 SWA656 PHX → SAN Jul 26, 12:12 UTCJul 26, 14:04 UTC1h 52m
2026-07-26 SWA4273 PHX → SNA Jul 26, 04:55 UTCJul 26, 06:35 UTC1h 41m
2026-07-26 SWA4273 PHX → SNA Jul 26, 04:51 UTCJul 26, 06:32 UTC1h 42m
2026-07-26 SWA1914 ONT → OAK Jul 26, 01:45 UTCJul 26, 03:15 UTC1h 30m
2026-07-25 SWA1914 ONT → OAK Jul 25, 22:10 UTCJul 26, 03:16 UTC5h 6m
2026-07-25 SWA3093 BDL → BWI Jul 25, 20:05 UTCJul 25, 20:35 UTC30m
2026-07-25 SWA3093 BDL → BWI Jul 25, 20:01 UTCJul 25, 20:30 UTC29m
2026-07-25 SWA574 MCI → LAX Jul 25, 18:30 UTCJul 25, 18:45 UTC15m
2026-07-25 SWA574 MCI → LAX Jul 25, 18:25 UTCJul 25, 18:46 UTC21m
2026-07-25 SWA2508 DEN → LBB Jul 25, 16:15 UTCJul 25, 16:36 UTC21m
2026-07-25 SWA1925 BDL → BWI Jul 25, 07:10 UTCJul 25, 07:20 UTC10m
2026-07-25 SWA1925 BDL → BWI Jul 25, 07:07 UTCJul 25, 07:28 UTC21m
2026-07-25 SWA2152 SJC → LGB Jul 25, 05:20 UTCJul 25, 05:50 UTC30m
2026-07-25 SWA1906 LAX → SFO Jul 25, 03:30 UTCJul 25, 03:55 UTC25m
2026-07-25 SWA1906 LAX → SFO Jul 25, 03:27 UTCJul 25, 04:03 UTC36m
2026-07-25 SWA661 OAK → PDX Jul 25, 02:10 UTCJul 25, 02:20 UTC10m
2026-07-24 SWA1923 MDW → IAH Jul 24, 23:55 UTCJul 25, 00:05 UTC10m
2026-07-24 SWA1921 SAN → LAS Jul 24, 19:55 UTCJul 24, 20:10 UTC15m
2026-07-24 SWA1921 SAN → LAS Jul 24, 19:54 UTCJul 24, 20:15 UTC21m
2026-07-24 SWA2167 MDW → PHL Jul 24, 18:15 UTCJul 24, 18:45 UTC30m
2026-07-24 SWA655 LAS → OAK Jul 24, 16:20 UTCJul 24, 16:50 UTC30m
2026-07-24 SWA2329 PVD → BWI Jul 24, 02:33 UTCJul 24, 08:00 UTC5h 27m
2026-07-24 SWA2329 PVD → BWI Jul 24, 02:35 UTCJul 24, 08:05 UTC5h 30m
2026-07-23 SWA3620 BWI → BOS Jul 23, 23:55 UTCJul 24, 00:35 UTC40m
2026-07-23 SWA3620 BWI → BOS Jul 23, 20:30 UTCJul 23, 22:30 UTC2h 0m
2026-07-23 SWA3051 DEN → SEA Jul 23, 16:25 UTCJul 23, 18:55 UTC2h 30m
2026-07-23 SWA935 BWI → DEN Jul 23, 11:45 UTCJul 23, 15:15 UTC3h 30m
2026-07-22 SWA3608 ALB → TPA Jul 22, 22:35 UTCJul 23, 00:55 UTC2h 20m
2026-07-22 SWA3608 ALB → TPA Jul 22, 22:35 UTCJul 23, 00:48 UTC2h 13m
2026-07-22 SWA4323 BUR → OAK Jul 22, 19:05 UTCJul 22, 21:20 UTC2h 15m
2026-07-22 SWA133 ALB → BWI Jul 22, 14:45 UTCJul 22, 16:25 UTC1h 40m
2026-07-22 SWA133 ALB → BWI Jul 22, 14:44 UTCJul 22, 16:12 UTC1h 28m
2026-07-22 SWA3300 MDW → MEM Jul 22, 02:20 UTCJul 22, 05:25 UTC3h 5m
2026-07-21 SWA4967 LGA → MDW Jul 21, 20:50 UTCJul 22, 00:50 UTC4h 0m
2026-07-21 SWA4967 LGA → MDW Jul 21, 20:49 UTCJul 22, 00:49 UTC4h 1m
2026-07-21 SWA4088 - Jul 21, 18:55 UTCJul 21, 19:40 UTC45m
2026-07-21 SWA2653 BNA → BOS Jul 21, 15:20 UTCJul 21, 17:40 UTC2h 20m
2026-07-21 SWA2653 BNA → BOS Jul 21, 15:16 UTCJul 21, 17:37 UTC2h 21m
2026-07-21 SWA1348 DAL → MCO Jul 21, 11:15 UTCJul 21, 13:30 UTC2h 15m
2026-07-20 SWA5071 MCO → MSY Jul 20, 22:30 UTCJul 20, 23:50 UTC1h 20m
2026-07-20 SWA5069 CMH → ATL Jul 20, 20:30 UTCJul 20, 21:30 UTC1h 0m
2026-07-20 SWA5069 CMH → ATL Jul 20, 20:25 UTCJul 20, 21:29 UTC1h 4m
2026-07-20 SWA5063 - Jul 20, 18:20 UTCJul 20, 19:30 UTC1h 10m
2026-07-20 SWA5062 DAL → MCO Jul 20, 15:45 UTCJul 20, 17:15 UTC1h 30m
2026-07-20 SWA23 DAL → HOU Jul 20, 13:25 UTCJul 20, 14:40 UTC1h 15m
2026-07-20 SWA23 DAL → HOU Jul 20, 13:24 UTCJul 20, 14:37 UTC1h 14m
2026-07-20 SWA679 MKE → PHX Jul 20, 11:25 UTCJul 20, 12:10 UTC45m
2026-07-20 SWA679 MKE → PHX Jul 20, 11:22 UTCJul 20, 12:11 UTC50m

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 N8735L page for operator, model, and routing details .

Mode-S AC048D frequently asked

What is Mode-S code AC048D?
AC048D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8735L.
Where is Mode-S AC048D registered?
Mode-S code AC048D 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 AC048D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC048D, octal 53002215, decimal 11,273,357.
What flights does AC048D operate?
Mode-S AC048D has broadcast 20 distinct callsigns, including SWA609, SWA3606, SWA2122, SWA1916, SWA1178.