Apparatus

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sensors Mode-S transponder

AAADDC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7877H · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAADDC
Octal
52526734
Decimal
11,185,628
Country
US
Tail
N7877H
Type
B737
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
790
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S AAADDC.

Country allocation

The ICAO 24-bit address AAADDC 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
SWA3544 - 7 2026-07-04
SWA267 Southwest Airlines 7 2026-04-18
SWA826 Southwest Airlines 6 2026-05-27
SWA1104 Southwest Airlines 6 2026-05-28
SWA436 Southwest Airlines 5 2026-05-26
SWA266 Southwest Airlines 5 2026-05-27
SWA2224 - 5 2026-07-12
SWA2194 Southwest Airlines 5 2026-05-10
SWA654 - 4 2026-07-09
SWA4297 Southwest Airlines 4 2026-05-28
SWA411 Southwest Airlines 4 2026-07-22
SWA406 Southwest Airlines 4 2026-07-17
SWA3969 Southwest Airlines 4 2026-04-17
SWA3212 Southwest Airlines 4 2026-07-25
SWA311 - 4 2026-07-01
SWA2824 - 4 2026-07-18
SWA2448 Southwest Airlines 4 2026-05-10
SWA1795 Southwest Airlines 4 2026-06-09
SWA1771 Southwest Airlines 4 2026-06-04
SWA1762 - 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4102 TPA → SAT Jul 26, 20:30 UTCJul 26, 21:55 UTC1h 25m
2026-07-26 SWA4805 MCO → BDL Jul 26, 18:05 UTCJul 26, 19:30 UTC1h 25m
2026-07-26 SWA3047 ONT → SJC Jul 26, 16:15 UTCJul 26, 17:00 UTC45m
2026-07-26 SWA235 JAX → BWI Jul 26, 14:15 UTCJul 26, 14:55 UTC40m
2026-07-26 SWA2163 SJC → LAS Jul 26, 04:05 UTCJul 26, 04:50 UTC45m
2026-07-26 SWA2717 DAL → SAN Jul 26, 00:15 UTCJul 26, 02:35 UTC2h 20m
2026-07-26 SWA2717 DAL → SAN Jul 26, 00:13 UTCJul 26, 02:30 UTC2h 17m
2026-07-25 SWA2717 DAL → SAN Jul 25, 21:05 UTCJul 25, 23:15 UTC2h 10m
2026-07-25 SWA1080 IND → RSW Jul 25, 17:25 UTCJul 25, 19:50 UTC2h 25m
2026-07-25 SWA1080 IND → RSW Jul 25, 17:19 UTCJul 25, 19:45 UTC2h 26m
2026-07-25 SWA1080 IND → RSW Jul 25, 15:30 UTCJul 25, 16:25 UTC55m
2026-07-25 SWA3020 STL → BOS Jul 25, 12:50 UTCJul 25, 14:20 UTC1h 30m
2026-07-25 SWA2055 DEN → SFO Jul 25, 03:40 UTCJul 25, 04:25 UTC45m
2026-07-25 SWA3212 RSW → MDW Jul 25, 00:05 UTCJul 25, 02:55 UTC2h 50m
2026-07-25 SWA3212 RSW → MDW Jul 25, 00:02 UTCJul 25, 02:50 UTC2h 48m
2026-07-24 SWA3212 RSW → MDW Jul 24, 21:40 UTCJul 24, 22:55 UTC1h 15m
2026-07-24 SWA3212 RSW → MDW Jul 24, 19:20 UTCJul 24, 20:40 UTC1h 20m
2026-07-24 SWA949 IND → BWI Jul 24, 17:15 UTCJul 24, 18:15 UTC1h 0m
2026-07-24 SWA2082 SJC → GEG Jul 24, 12:45 UTCJul 24, 16:05 UTC3h 20m
2026-07-24 SWA2082 SJC → GEG Jul 24, 12:41 UTCJul 24, 16:00 UTC3h 19m
2026-07-24 SWA2645 PHL → MDW Jul 24, 03:30 UTCJul 24, 05:15 UTC1h 45m
2026-07-24 SWA2645 PHL → MDW Jul 24, 03:25 UTCJul 24, 05:08 UTC1h 43m
2026-07-23 SWA2690 PHL → BNA Jul 23, 23:15 UTCJul 24, 01:45 UTC2h 30m
2026-07-23 SWA1401 PIT → MCO Jul 23, 21:35 UTCJul 23, 22:20 UTC45m
2026-07-23 SWA1401 PIT → MCO Jul 23, 19:00 UTCJul 23, 20:40 UTC1h 40m
2026-07-23 SWA2552 BOS → MDW Jul 23, 16:15 UTCJul 23, 17:55 UTC1h 40m
2026-07-23 SWA4215 SJC → BUR Jul 23, 13:00 UTCJul 23, 15:15 UTC2h 15m
2026-07-23 SWA2141 - Jul 23, 10:15 UTCJul 23, 11:05 UTC50m
2026-07-23 SWA4321 LAS → ELP Jul 23, 01:50 UTCJul 23, 02:30 UTC40m
2026-07-22 SWA209 ATL → BWI Jul 22, 23:00 UTCJul 23, 00:25 UTC1h 25m
2026-07-22 SWA209 LAS → PHX Jul 22, 22:59 UTCJul 23, 00:25 UTC1h 26m
2026-07-22 SWA4922 LAX → OAK Jul 22, 20:55 UTCJul 22, 21:55 UTC1h 0m
2026-07-22 SWA1440 LAS → OAK Jul 22, 18:00 UTCJul 22, 19:45 UTC1h 45m
2026-07-22 SWA411 BNA → MDW Jul 22, 14:25 UTCJul 22, 16:20 UTC1h 55m
2026-07-22 SWA411 BNA → MDW Jul 22, 11:35 UTCJul 22, 13:20 UTC1h 45m
2026-07-22 SWA4169 LAX → OAK Jul 22, 03:20 UTCJul 22, 03:45 UTC25m
2026-07-22 SWA4169 LAX → OAK Jul 22, 03:17 UTCJul 22, 03:45 UTC28m
2026-07-22 SWA2355 - Jul 22, 00:25 UTCJul 22, 01:40 UTC1h 15m
2026-07-21 SWA1282 SJC → SAN Jul 21, 22:55 UTCJul 21, 23:40 UTC45m
2026-07-21 SWA4944 HOU → STL Jul 21, 20:25 UTCJul 21, 21:45 UTC1h 20m
2026-07-21 SWA4944 HOU → STL Jul 21, 20:14 UTCJul 21, 21:40 UTC1h 26m
2026-07-21 SWA1310 SAN → LAS Jul 21, 18:00 UTCJul 21, 19:00 UTC1h 0m
2026-07-21 SWA1310 SAN → LAS Jul 21, 17:55 UTCJul 21, 19:10 UTC1h 15m
2026-07-21 SWA4076 LAS → GRR Jul 21, 16:05 UTCJul 21, 16:50 UTC45m
2026-07-21 SWA4076 LAS → GRR Jul 21, 15:55 UTCJul 21, 16:47 UTC52m
2026-07-21 SWA3012 BUR → SMF Jul 21, 14:05 UTCJul 21, 14:50 UTC45m
2026-07-20 SWA1937 PHX → DAL Jul 20, 22:05 UTCJul 21, 00:15 UTC2h 10m
2026-07-20 SWA3232 LAX → SFO Jul 20, 19:05 UTCJul 20, 20:40 UTC1h 35m
2026-07-20 SWA835 BUR → SJC Jul 20, 17:05 UTCJul 20, 17:50 UTC45m
2026-07-20 SWA3327 - Jul 20, 14:50 UTCJul 20, 15:35 UTC45m

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 N7877H page for operator, model, and routing details .

Mode-S AAADDC frequently asked

What is Mode-S code AAADDC?
AAADDC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7877H.
Where is Mode-S AAADDC registered?
Mode-S code AAADDC 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 AAADDC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAADDC, octal 52526734, decimal 11,185,628.
What flights does AAADDC operate?
Mode-S AAADDC has broadcast 20 distinct callsigns, including SWA3544, SWA267, SWA826, SWA1104, SWA436.