Apparatus

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sensors Mode-S transponder

AC015F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8729H · BOEING 737 MAX 8 · operated by UMB BANK NA TRUSTEE

Hex
AC015F
Octal
53000537
Decimal
11,272,543
Country
US
Tail
N8729H
Type
B38M
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
716
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S AC015F.

Country allocation

The ICAO 24-bit address AC015F 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
SWA3674 - 6 2026-07-10
SWA2409 Southwest Airlines 6 2026-05-17
SWA4238 - 5 2026-06-16
SWA2374 - 5 2026-07-07
SWA2257 Southwest Airlines 5 2026-05-14
SWA1932 - 5 2026-07-11
SWA1890 Southwest Airlines 5 2026-04-23
SWA489 Southwest Airlines 4 2026-05-25
SWA4402 - 4 2026-06-24
SWA4300 - 4 2026-07-14
SWA3389 Southwest Airlines 4 2026-05-05
SWA2881 - 4 2026-04-13
SWA2879 - 4 2026-07-13
SWA2259 Southwest Airlines 4 2026-05-20
SWA2113 Southwest Airlines 4 2026-05-05
SWA1254 Southwest Airlines 4 2026-07-19
SWA973 Southwest Airlines 3 2026-06-06
SWA675 Southwest Airlines 3 2026-07-26
SWA576 - 3 2026-07-04
SWA512 - 3 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2168 SAN → OAK Jul 26, 21:40 UTCJul 26, 21:45 UTC5m
2026-07-26 SWA675 DAL → ATL Jul 26, 20:05 UTCJul 26, 20:35 UTC30m
2026-07-26 SWA2149 ORD → MCO Jul 26, 18:05 UTCJul 26, 18:47 UTC42m
2026-07-26 SWA1902 LAS → OAK Jul 26, 16:10 UTCJul 26, 16:35 UTC25m
2026-07-26 SWA9000 DAL → HOU Jul 26, 01:55 UTCJul 26, 07:10 UTC5h 16m
2026-07-25 SWA2434 LAS → OAK Jul 25, 23:30 UTCJul 26, 00:15 UTC45m
2026-07-25 SWA1570 IAH → LAS Jul 25, 20:30 UTCJul 25, 22:25 UTC1h 55m
2026-07-25 SWA1570 IAH → LAS Jul 25, 20:27 UTCJul 25, 22:20 UTC1h 54m
2026-07-25 SWA2119 PDX → SJC Jul 25, 16:40 UTCJul 25, 18:55 UTC2h 15m
2026-07-25 SWA3778 LAS → CMH Jul 25, 13:35 UTCJul 25, 15:35 UTC2h 0m
2026-07-25 SWA2050 HNL → OAK Jul 25, 10:19 UTCJul 25, 12:03 UTC1h 44m
2026-07-25 SWA2050 HNL → OAK Jul 25, 10:20 UTCJul 25, 11:45 UTC1h 25m
2026-07-25 SWA467 SJC → SAN Jul 25, 00:35 UTCJul 25, 02:05 UTC1h 30m
2026-07-25 SWA467 SJC → SAN Jul 25, 00:34 UTCJul 25, 02:01 UTC1h 27m
2026-07-24 SWA4799 DEN → LAX Jul 24, 21:30 UTCJul 24, 23:25 UTC1h 55m
2026-07-24 SWA1361 AUS → ONT Jul 24, 17:05 UTCJul 24, 19:25 UTC2h 20m
2026-07-24 SWA1361 AUS → ONT Jul 24, 13:30 UTCJul 24, 15:45 UTC2h 15m
2026-07-24 SWA1361 AUS → ONT Jul 24, 13:27 UTCJul 24, 15:58 UTC2h 31m
2026-07-24 SWA4503 SAN → ABQ Jul 24, 05:40 UTCJul 24, 06:45 UTC1h 5m
2026-07-24 SWA1843 PHX → BWI Jul 24, 01:50 UTCJul 24, 04:00 UTC2h 10m
2026-07-23 SWA721 SJD → DEN Jul 23, 16:00 UTCJul 23, 23:25 UTC7h 25m
2026-07-23 SWA4894 FLL → LAS Jul 23, 13:30 UTCJul 23, 14:30 UTC1h 0m
2026-07-23 SWA4894 FLL → LAS Jul 23, 13:29 UTCJul 23, 14:29 UTC1h 0m
2026-07-23 SWA3681 ATL → CMH Jul 23, 05:20 UTCJul 23, 06:15 UTC55m
2026-07-23 SWA3681 ATL → CMH Jul 23, 05:15 UTCJul 23, 06:06 UTC52m
2026-07-23 SWA4186 DEN → BOS Jul 23, 03:25 UTCJul 23, 04:25 UTC1h 0m
2026-07-23 SWA3652 MCO → MHT Jul 23, 01:10 UTCJul 23, 02:20 UTC1h 10m
2026-07-23 SWA3652 MCO → MHT Jul 23, 01:06 UTCJul 23, 02:16 UTC1h 11m
2026-07-22 SWA2541 ATL → BNA Jul 22, 18:50 UTCJul 22, 22:55 UTC4h 5m
2026-07-22 SWA2188 DAL → LGA Jul 22, 14:25 UTCJul 22, 17:35 UTC3h 10m
2026-07-22 SWA2171 DEN → SMF Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-22 SWA3099 STL → BOS Jul 22, 00:20 UTCJul 22, 00:35 UTC15m
2026-07-22 SWA3099 STL → BOS Jul 22, 00:14 UTCJul 22, 00:34 UTC20m
2026-07-21 SWA2138 BNA → PHL Jul 21, 22:40 UTCJul 21, 22:50 UTC10m
2026-07-21 SWA2138 BNA → PHL Jul 21, 16:45 UTCJul 21, 22:50 UTC6h 5m
2026-07-21 SWA2138 BNA → PHL Jul 21, 16:45 UTCJul 21, 17:55 UTC1h 10m
2026-07-21 SWA1855 SJC → PHX Jul 21, 13:15 UTCJul 21, 14:45 UTC1h 30m
2026-07-21 SWA1855 SJC → PHX Jul 21, 13:13 UTCJul 21, 14:42 UTC1h 29m
2026-07-21 SWA3542 SAN → SJC Jul 21, 06:03 UTCJul 21, 06:59 UTC56m
2026-07-21 SWA3542 - Jul 21, 06:05 UTCJul 21, 07:00 UTC55m
2026-07-21 SWA133 ALB → BWI Jul 21, 00:42 UTCJul 21, 04:53 UTC4h 11m
2026-07-21 SWA133 ALB → BWI Jul 21, 00:45 UTCJul 21, 04:55 UTC4h 10m
2026-07-20 SWA823 STL → PHL Jul 20, 20:20 UTCJul 20, 22:55 UTC2h 35m
2026-07-20 SWA823 STL → PHL Jul 20, 17:50 UTCJul 20, 18:45 UTC55m
2026-07-20 SWA1059 SFO → PHX Jul 20, 16:00 UTCJul 20, 16:45 UTC45m
2026-07-20 SWA852 - Jul 20, 13:00 UTCJul 20, 14:25 UTC1h 25m
2026-07-20 SWA852 MDW → RDU Jul 20, 12:55 UTCJul 20, 14:20 UTC1h 25m
2026-07-20 SWA1615 DEN → MDW Jul 20, 04:00 UTCJul 20, 05:50 UTC1h 50m
2026-07-19 SWA3206 PHX → DEN Jul 19, 23:55 UTCJul 20, 01:25 UTC1h 30m
2026-07-19 SWA3984 OAK → BUR Jul 19, 20:25 UTCJul 19, 22:35 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 N8729H page for operator, model, and routing details .

Mode-S AC015F frequently asked

What is Mode-S code AC015F?
AC015F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8729H.
Where is Mode-S AC015F registered?
Mode-S code AC015F 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 AC015F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC015F, octal 53000537, decimal 11,272,543.
What flights does AC015F operate?
Mode-S AC015F has broadcast 20 distinct callsigns, including SWA3674, SWA2409, SWA4238, SWA2374, SWA2257.