Apparatus

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sensors Mode-S transponder

A684C4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N519VL · AIRBUS A-320 · operated by BANK OF UTAH TRUSTEE

Hex
A684C4
Octal
51502304
Decimal
10,912,964
Country
US
Tail
N519VL
Type
A320
Broadcasting now · callsign VOI7791 · 37,275 ft
Flights observed
275
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Current position

A684C4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A684C4 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
VOI713 - 8 2026-07-15
VOI712 - 6 2026-07-14
VOI391 Volaris 4 2026-05-16
VOI390 Volaris 4 2026-05-15
VOI380 Volaris 4 2026-07-26
VOI3352 - 4 2026-07-22
VOI1716 Volaris 4 2026-05-28
VOI1271 Volaris 4 2026-05-22
VOI7854 Volaris 3 2026-05-17
VOI7760 - 3 2026-04-19
VOI381 - 3 2026-06-24
VOI371 Volaris 3 2026-07-26
VOI3519 Volaris 3 2026-07-21
VOI3268 Volaris 3 2026-07-25
VOI3181 Volaris 3 2026-07-23
VOI3180 Volaris 3 2026-07-23
VOI1720 Volaris 3 2026-04-18
VOI816 Volaris 2 2026-07-18
VOI800 Volaris 2 2026-04-28
VOI7961 - 2 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VOI3257 LMM → TIJ Jul 26, 17:55 UTCJul 26, 21:50 UTC3h 55m
2026-07-26 VOI3183 HMO → TIJ Jul 26, 15:40 UTCJul 26, 16:40 UTC1h 0m
2026-07-26 VOI380 MEX → HMO Jul 26, 14:10 UTCJul 26, 14:25 UTC15m
2026-07-26 VOI380 MEX → HMO Jul 26, 12:15 UTCJul 26, 12:35 UTC20m
2026-07-26 VOI371 ACA → MEX Jul 26, 03:15 UTCJul 26, 03:50 UTC35m
2026-07-25 VOI3268 TIJ → ACA Jul 25, 22:45 UTCJul 26, 01:55 UTC3h 10m
2026-07-25 VOI5195 MZT → TIJ Jul 25, 16:20 UTCJul 25, 21:20 UTC5h 0m
2026-07-24 VOI3518 CUN → QRO Jul 24, 23:30 UTCJul 25, 15:05 UTC15h 35m
2026-07-24 VOI3353 - Jul 24, 16:35 UTCJul 24, 22:25 UTC5h 50m
2026-07-24 VOI3343 TGZ → TIJ Jul 24, 12:00 UTCJul 24, 15:25 UTC3h 25m
2026-07-24 VOI3342 TIJ → TGZ Jul 24, 06:50 UTCJul 24, 10:30 UTC3h 40m
2026-07-24 VOI3240 TIJ → TPQ Jul 24, 00:00 UTCJul 24, 05:30 UTC5h 30m
2026-07-23 VOI3185 HMO → TIJ Jul 23, 21:50 UTCJul 23, 22:55 UTC1h 5m
2026-07-23 VOI3184 TIJ → HMO Jul 23, 19:25 UTCJul 23, 20:30 UTC1h 5m
2026-07-23 VOI3181 HMO → TIJ Jul 23, 17:10 UTCJul 23, 18:10 UTC1h 0m
2026-07-23 VOI3180 TIJ → HMO Jul 23, 15:05 UTCJul 23, 16:10 UTC1h 5m
2026-07-23 VOI5010 TIJ → CUL Jul 23, 01:25 UTCJul 23, 05:40 UTC4h 15m
2026-07-22 VOI5271 ACA → TIJ Jul 22, 22:45 UTCJul 22, 23:55 UTC1h 10m
2026-07-22 VOI5270 - Jul 22, 16:30 UTCJul 22, 19:35 UTC3h 5m
2026-07-22 VOI3352 - Jul 22, 11:10 UTCJul 22, 15:05 UTC3h 55m
2026-07-21 VOI7896 QRO → LAX Jul 21, 23:25 UTCJul 22, 05:25 UTC6h 0m
2026-07-21 VOI3519 QRO → CUN Jul 21, 16:25 UTCJul 21, 22:25 UTC6h 0m
2026-07-21 VOI3352 MTY → TIJ Jul 21, 02:25 UTCJul 21, 15:05 UTC12h 40m
2026-07-20 VOI3514 - Jul 20, 17:40 UTCJul 21, 01:25 UTC7h 45m
2026-07-20 VOI7897 LAX → CUN Jul 20, 08:25 UTCJul 20, 16:35 UTC8h 10m
2026-07-19 VOI7891 ORD → LAX Jul 19, 12:20 UTCJul 20, 05:45 UTC17h 25m
2026-07-19 VOI7890 - Jul 19, 01:35 UTCJul 19, 10:15 UTC8h 40m
2026-07-18 VOI816 QRO → DFW Jul 18, 16:30 UTCJul 18, 23:15 UTC6h 45m
2026-07-18 VOI3210 - Jul 18, 09:25 UTCJul 18, 15:05 UTC5h 40m
2026-07-18 VOI3258 TIJ → LMM Jul 18, 00:55 UTCJul 18, 04:50 UTC3h 56m
2026-07-17 VOI3660 - Jul 17, 15:05 UTCJul 18, 00:04 UTC9h 0m
2026-07-17 VOI5143 - Jul 17, 01:45 UTCJul 17, 04:59 UTC3h 15m
2026-07-16 VOI5142 TIJ → OAX Jul 16, 21:05 UTCJul 17, 00:25 UTC3h 20m
2026-07-16 VOI3263 - Jul 16, 13:20 UTCJul 16, 19:35 UTC6h 15m
2026-07-16 VOI188 - Jul 16, 03:55 UTCJul 16, 06:55 UTC3h 0m
2026-07-16 VOI441 - Jul 16, 01:50 UTCJul 16, 02:25 UTC35m
2026-07-15 VOI1242 - Jul 15, 20:40 UTCJul 16, 00:00 UTC3h 20m
2026-07-15 VOI3598 - Jul 15, 18:05 UTCJul 15, 19:25 UTC1h 20m
2026-07-15 VOI3599 - Jul 15, 15:15 UTCJul 15, 16:50 UTC1h 35m
2026-07-15 VOI440 - Jul 15, 13:35 UTCJul 15, 14:00 UTC25m
2026-07-15 VOI713 - Jul 15, 05:45 UTCJul 15, 05:55 UTC10m
2026-07-15 VOI713 - Jul 15, 02:30 UTCJul 15, 03:50 UTC1h 20m
2026-07-14 VOI7855 - Jul 14, 17:50 UTCJul 15, 00:35 UTC6h 44m
2026-07-14 VOI712 - Jul 14, 12:10 UTCJul 14, 15:30 UTC3h 20m
2026-07-13 VOI183 - Jul 13, 02:45 UTCJul 13, 02:50 UTC5m
2026-07-12 VOI183 - Jul 12, 23:40 UTCJul 13, 01:01 UTC1h 20m
2026-07-12 VOI3191 - Jul 12, 17:30 UTCJul 12, 22:15 UTC4h 45m
2026-07-12 VOI3358 TIJ → TIJ Jul 12, 07:05 UTCJul 12, 16:25 UTC9h 20m
2026-07-11 VOI3264 - Jul 11, 23:20 UTCJul 12, 05:20 UTC6h 0m
2026-07-11 VOI3364 - Jul 11, 15:15 UTCJul 11, 22:01 UTC6h 45m

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 N519VL page for operator, model, and routing details .

Mode-S A684C4 frequently asked

What is Mode-S code A684C4?
A684C4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N519VL.
Where is Mode-S A684C4 registered?
Mode-S code A684C4 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 A684C4 broadcasting right now?
Yes. Mode-S A684C4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A684C4, octal 51502304, decimal 10,912,964.
What flights does A684C4 operate?
Mode-S A684C4 has broadcast 20 distinct callsigns, including VOI713, VOI712, VOI391, VOI390, VOI380.