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sensors Mode-S transponder

AAADF8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7878A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAADF8
Octal
52526770
Decimal
11,185,656
Country
US
Tail
N7878A
Type
B737
No current signal · last broadcast Jul 21, 17:55 UTC
Flights observed
735
Distinct callsigns
20
Country
US
Last broadcast
Jul 21, 17:55 UTC

Last known position

Most recent position reported by Mode-S AAADF8.

Country allocation

The ICAO 24-bit address AAADF8 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
SWA351 - 8 2026-07-17
SWA500 Southwest Airlines 6 2026-04-27
SWA3546 Southwest Airlines 6 2026-04-15
SWA2807 Southwest Airlines 6 2026-05-28
SWA2492 Southwest Airlines 6 2026-06-07
SWA106 Southwest Airlines 6 2026-06-05
SWA1095 Southwest Airlines 5 2026-05-11
SWA478 Southwest Airlines 4 2026-06-09
SWA4526 Southwest Airlines 4 2026-05-02
SWA427 - 4 2026-07-01
SWA342 Southwest Airlines 4 2026-06-11
SWA2690 - 4 2026-07-03
SWA2644 Southwest Airlines 4 2026-05-04
SWA2098 Southwest Airlines 4 2026-04-23
SWA1953 - 4 2026-06-13
SWA1718 Southwest Airlines 4 2026-05-05
SWA1688 Southwest Airlines 4 2026-04-27
SWA1552 Southwest Airlines 4 2026-05-29
SWA1479 Southwest Airlines 4 2026-05-18
SWA1101 - 4 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 SWA8536 SJC → OAK Jul 21, 15:25 UTCJul 21, 17:55 UTC2h 30m
2026-07-21 SWA4702 PDX → STL Jul 21, 05:30 UTCJul 21, 14:15 UTC8h 45m
2026-07-21 SWA1288 RDU → AUS Jul 21, 03:40 UTCJul 21, 04:25 UTC45m
2026-07-20 SWA1288 RDU → AUS Jul 20, 23:40 UTCJul 21, 01:00 UTC1h 20m
2026-07-20 SWA2272 DEN → BNA Jul 20, 21:15 UTCJul 20, 22:20 UTC1h 5m
2026-07-20 SWA2272 DEN → BNA Jul 20, 21:15 UTCJul 20, 22:17 UTC1h 3m
2026-07-20 SWA3454 - Jul 20, 19:05 UTCJul 20, 20:20 UTC1h 15m
2026-07-20 SWA339 - Jul 20, 16:25 UTCJul 20, 17:15 UTC50m
2026-07-20 SWA3442 DEN → BOS Jul 20, 14:15 UTCJul 20, 15:10 UTC55m
2026-07-20 SWA3442 DEN → BOS Jul 20, 14:10 UTCJul 20, 15:09 UTC59m
2026-07-20 SWA4136 SFO → LAX Jul 20, 04:00 UTCJul 20, 05:45 UTC1h 45m
2026-07-20 SWA3800 SJC → DEN Jul 20, 00:30 UTCJul 20, 02:40 UTC2h 10m
2026-07-20 SWA3800 SJC → DEN Jul 20, 00:30 UTCJul 20, 02:33 UTC2h 3m
2026-07-19 SWA984 LAS → SJC Jul 19, 22:30 UTCJul 19, 23:30 UTC1h 0m
2026-07-19 SWA3115 DEN → OAK Jul 19, 20:10 UTCJul 19, 21:20 UTC1h 10m
2026-07-19 SWA3115 DEN → OAK Jul 19, 20:10 UTCJul 19, 21:12 UTC1h 2m
2026-07-19 SWA3115 DEN → OAK Jul 19, 15:30 UTCJul 19, 19:10 UTC3h 40m
2026-07-19 SWA1270 - Jul 19, 12:45 UTCJul 19, 14:00 UTC1h 15m
2026-07-19 SWA1270 ATL → MDW Jul 19, 12:41 UTCJul 19, 14:08 UTC1h 27m
2026-07-19 SWA2179 LAS → ATL Jul 19, 06:10 UTCJul 19, 09:45 UTC3h 35m
2026-07-19 SWA2179 LAS → ATL Jul 19, 06:06 UTCJul 19, 09:41 UTC3h 35m
2026-07-19 SWA2335 HOU → LGA Jul 19, 02:35 UTCJul 19, 03:40 UTC1h 5m
2026-07-19 SWA2335 HOU → LGA Jul 19, 00:25 UTCJul 19, 01:45 UTC1h 20m
2026-07-18 SWA4095 MSY → TPA Jul 18, 21:25 UTCJul 18, 23:10 UTC1h 45m
2026-07-18 SWA4095 MSY → TPA Jul 18, 21:23 UTCJul 18, 23:15 UTC1h 52m
2026-07-18 SWA4811 SJC → SAN Jul 18, 19:25 UTCJul 18, 20:30 UTC1h 5m
2026-07-18 SWA4811 SJC → SAN Jul 18, 19:21 UTCJul 18, 20:27 UTC1h 6m
2026-07-18 SWA3860 - Jul 18, 17:25 UTCJul 18, 18:20 UTC55m
2026-07-18 SWA3715 - Jul 18, 15:15 UTCJul 18, 15:55 UTC40m
2026-07-18 SWA1559 DEN → LAS Jul 18, 12:51 UTCJul 18, 14:11 UTC1h 20m
2026-07-18 SWA1559 DEN → LAS Jul 18, 12:55 UTCJul 18, 14:15 UTC1h 20m
2026-07-18 SWA2418 - Jul 18, 02:45 UTCJul 18, 04:45 UTC2h 1m
2026-07-18 SWA2418 - Jul 18, 01:10 UTCJul 18, 02:00 UTC50m
2026-07-17 SWA2418 - Jul 17, 21:15 UTCJul 18, 00:00 UTC2h 45m
2026-07-17 SWA351 - Jul 17, 19:09 UTCJul 17, 20:15 UTC1h 5m
2026-07-17 SWA351 DEN → MCI Jul 17, 19:05 UTCJul 17, 20:15 UTC1h 10m
2026-07-17 SWA351 BUR → DEN Jul 17, 15:49 UTCJul 17, 17:40 UTC1h 50m
2026-07-17 SWA2202 LAS → BUR Jul 17, 03:25 UTCJul 17, 04:10 UTC45m
2026-07-17 SWA4370 BUR → LAS Jul 17, 01:29 UTCJul 17, 02:30 UTC1h 0m
2026-07-17 SWA4370 BUR → LAS Jul 17, 01:25 UTCJul 17, 02:26 UTC1h 1m
2026-07-16 SWA697 - Jul 16, 22:40 UTCJul 17, 00:25 UTC1h 45m
2026-07-16 SWA803 - Jul 16, 20:35 UTCJul 16, 21:40 UTC1h 5m
2026-07-16 SWA3154 - Jul 16, 18:15 UTCJul 16, 19:10 UTC55m
2026-07-16 SWA3805 SMF → ONT Jul 16, 16:25 UTCJul 16, 17:25 UTC1h 0m
2026-07-16 SWA3805 SMF → ONT Jul 16, 16:20 UTCJul 16, 17:20 UTC1h 0m
2026-07-16 SWA3544 - Jul 16, 14:25 UTCJul 16, 15:35 UTC1h 10m
2026-07-16 SWA1089 - Jul 16, 01:35 UTCJul 16, 06:05 UTC4h 30m
2026-07-15 SWA4294 - Jul 15, 22:05 UTCJul 16, 00:05 UTC2h 0m
2026-07-15 SWA3224 - Jul 15, 18:35 UTCJul 15, 21:00 UTC2h 25m
2026-07-15 SWA3224 MDW → RSW Jul 15, 18:31 UTCJul 15, 20:55 UTC2h 24m

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 N7878A page for operator, model, and routing details .

Mode-S AAADF8 frequently asked

What is Mode-S code AAADF8?
AAADF8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7878A.
Where is Mode-S AAADF8 registered?
Mode-S code AAADF8 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 AAADF8 broadcasting right now?
No active broadcast right now. Last signal was Jul 21, 17:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAADF8, octal 52526770, decimal 11,185,656.
What flights does AAADF8 operate?
Mode-S AAADF8 has broadcast 20 distinct callsigns, including SWA351, SWA500, SWA3546, SWA2807, SWA2492.