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
No current signal · last broadcast 1h ago
Flights observed
246
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A684C4.

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
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
VOI1720 Volaris 3 2026-04-18
VOI800 Volaris 2 2026-04-28
VOI7961 - 2 2026-06-24
VOI751 Volaris 2 2026-05-13
VOI750 - 2 2026-06-24
VOI5609 Volaris 2 2026-04-14
VOI5608 - 2 2026-04-14
VOI5575 Volaris 2 2026-04-15
VOI5574 Volaris 2 2026-04-15
VOI380 Volaris 2 2026-06-11
VOI371 Volaris 2 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-11 VOI3259 - Jul 11, 00:50 UTCJul 11, 04:45 UTC3h 55m
2026-07-10 VOI3232 - Jul 10, 19:20 UTCJul 10, 23:35 UTC4h 15m
2026-07-10 VOI3255 - Jul 10, 13:10 UTCJul 10, 18:10 UTC5h 0m
2026-07-09 VOI3008 - Jul 9, 21:40 UTCJul 10, 02:05 UTC4h 25m
2026-07-09 VOI3230 - Jul 9, 16:30 UTCJul 9, 20:30 UTC4h 0m
2026-07-09 VOI1958 - Jul 9, 04:00 UTCJul 9, 14:50 UTC10h 50m
2026-07-09 VOI1957 - Jul 9, 00:50 UTCJul 9, 02:05 UTC1h 15m
2026-07-08 VOI533 - Jul 8, 18:10 UTCJul 8, 18:40 UTC30m
2026-07-08 VOI817 - Jul 8, 01:20 UTCJul 8, 16:50 UTC15h 30m
2026-07-07 VOI816 - Jul 7, 18:25 UTCJul 7, 23:20 UTC4h 55m
2026-07-07 VOI500 - Jul 7, 16:40 UTCJul 7, 16:55 UTC15m
2026-07-07 VOI537 VER → QRO Jul 7, 14:30 UTCJul 7, 15:05 UTC35m
2026-07-07 VOI5554 MTY → VER Jul 7, 02:05 UTCJul 7, 13:35 UTC11h 30m
2026-07-06 VOI3514 CUN → MTY Jul 6, 17:20 UTCJul 7, 01:15 UTC7h 55m
2026-07-06 VOI7897 - Jul 6, 08:10 UTCJul 6, 16:25 UTC8h 15m
2026-07-05 VOI7896 - Jul 5, 23:30 UTCJul 6, 05:40 UTC6h 10m
2026-07-05 VOI3519 - Jul 5, 16:35 UTCJul 5, 22:30 UTC5h 55m
2026-07-04 VOI3352 - Jul 4, 23:15 UTCJul 5, 15:25 UTC16h 10m
2026-07-04 VOI3353 - Jul 4, 16:20 UTCJul 4, 22:00 UTC5h 40m
2026-07-03 VOI3352 CUN → TIJ Jul 3, 23:15 UTCJul 4, 15:20 UTC16h 5m
2026-07-03 VOI3519 - Jul 3, 16:25 UTCJul 3, 22:00 UTC5h 35m
2026-07-03 VOI3294 - Jul 3, 01:30 UTCJul 3, 05:40 UTC4h 10m
2026-07-02 VOI3233 LAP → TIJ Jul 2, 19:40 UTCJul 3, 00:20 UTC4h 40m
2026-07-02 VOI3371 - Jul 2, 13:10 UTCJul 2, 18:20 UTC5h 10m
2026-07-01 VOI3275 - Jul 1, 20:20 UTCJul 2, 02:55 UTC6h 35m
2026-07-01 VOI3181 HMO → TIJ Jul 1, 17:05 UTCJul 1, 18:10 UTC1h 5m
2026-07-01 VOI3180 - Jul 1, 15:10 UTCJul 1, 16:10 UTC1h 0m
2026-06-30 VOI182 - Jun 30, 23:05 UTCJul 1, 02:15 UTC3h 10m
2026-06-30 VOI1399 PBC → MEX Jun 30, 14:35 UTCJun 30, 21:30 UTC6h 55m

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?
No active broadcast right now. Last signal was 1h ago.
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, VOI1716.