sensors Mode-S transponder

AC07DC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8742M · BOEING 737 MAX 8 · operated by UMB BANK NA TRUSTEE

Hex
AC07DC
Octal
53003734
Decimal
11,274,204
Country
US
Tail
N8742M
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
15
Distinct callsigns
5
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC07DC.

Country allocation

The ICAO 24-bit address AC07DC 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 5 distinct

Callsign Airline Flights Last seen
SWA2127 Southwest Airlines 6 2026-04-13
SWA3552 - 3 2026-04-13
SWA1969 - 3 2026-04-13
SWA330 - 2 2026-04-13
SWA2540 - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWA2127 OAK → OGG Apr 13, 22:00 UTCApr 13, 22:50 UTC50m
2026-04-13 SWA2127 OAK → OGG Apr 13, 19:50 UTCApr 13, 20:45 UTC55m
2026-04-13 SWA2127 OAK → OGG Apr 13, 17:40 UTCApr 13, 20:05 UTC2h 25m
2026-04-13 SWA2127 OAK → OGG Apr 13, 16:15 UTCApr 13, 16:35 UTC20m
2026-04-13 SWA2127 OAK → OGG Apr 13, 15:50 UTCApr 13, 16:35 UTC45m
2026-04-13 SWA2127 OAK → OGG Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 SWA3552 - Apr 13, 08:30 UTCApr 13, 11:10 UTC2h 40m
2026-04-13 SWA3552 - Apr 13, 07:55 UTCApr 13, 11:10 UTC3h 15m
2026-04-13 SWA3552 - Apr 13, 07:06 UTCApr 13, 10:54 UTC3h 48m
2026-04-13 SWA1969 - Apr 13, 04:20 UTCApr 13, 05:50 UTC1h 30m
2026-04-13 SWA1969 - Apr 13, 03:29 UTCApr 13, 05:44 UTC2h 15m
2026-04-13 SWA1969 - Apr 13, 03:14 UTCApr 13, 05:33 UTC2h 19m
2026-04-13 SWA330 - Apr 13, 00:20 UTCApr 13, 02:00 UTC1h 40m
2026-04-12 SWA330 - Apr 12, 23:55 UTCApr 13, 02:00 UTC2h 5m
2026-04-12 SWA2540 - Apr 12, 17:04 UTCApr 12, 19:14 UTC2h 10m

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 N8742M page for operator, model, and routing details .

Mode-S AC07DC frequently asked

What is Mode-S code AC07DC?
AC07DC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8742M.
Where is Mode-S AC07DC registered?
Mode-S code AC07DC 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 AC07DC broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC07DC, octal 53003734, decimal 11,274,204.
What flights does AC07DC operate?
Mode-S AC07DC has broadcast 5 distinct callsigns, including SWA2127, SWA3552, SWA1969, SWA330, SWA2540.