Apparatus

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sensors Mode-S transponder

A6F01C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N546VL · AIRBUS A-320neo · operated by BANK OF UTAH TRUSTEE

Hex
A6F01C
Octal
51570034
Decimal
10,940,444
Country
US
Tail
N546VL
Type
A20N
No current signal · last broadcast Jul 23, 05:00 UTC
Flights observed
244
Distinct callsigns
20
Country
US
Last broadcast
Jul 23, 05:00 UTC

Last known position

Most recent position reported by Mode-S A6F01C.

Country allocation

The ICAO 24-bit address A6F01C 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
VOS4308 - 27 2026-07-21
VOS4309 - 25 2026-07-21
VOS4312 - 23 2026-07-23
VOS4326 - 20 2026-07-17
VOS4313 - 20 2026-07-19
VOS4327 - 19 2026-07-17
VOS4337 - 13 2026-07-16
VOS4336 - 13 2026-07-16
VOS4322 - 12 2026-07-19
VOS4330 - 11 2026-07-20
VOS4323 - 11 2026-07-19
VOS4331 - 10 2026-07-20
VOS4321 - 7 2026-07-21
VOS4320 - 7 2026-07-21
VOS4300 - 5 2026-06-03
VOS4301 - 4 2026-07-08
VOC4062 Volaris Costa Rica 3 2026-05-14
VOI391 - 2 2026-07-08
VOI390 - 2 2026-07-07
VOI1721 - 2 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 VOS4312 - Jul 23, 01:10 UTCJul 23, 04:55 UTC3h 45m
2026-07-22 VOS4312 - Jul 22, 01:25 UTCJul 22, 05:25 UTC4h 0m
2026-07-21 VOS4321 - Jul 21, 19:45 UTCJul 21, 22:10 UTC2h 25m
2026-07-21 VOS4320 - Jul 21, 15:25 UTCJul 21, 17:50 UTC2h 25m
2026-07-21 VOS4309 - Jul 21, 07:15 UTCJul 21, 11:55 UTC4h 40m
2026-07-21 VOS4308 - Jul 21, 00:30 UTCJul 21, 05:05 UTC4h 35m
2026-07-20 VOS4331 - Jul 20, 18:10 UTCJul 20, 22:45 UTC4h 35m
2026-07-20 VOS4330 - Jul 20, 11:40 UTCJul 20, 16:20 UTC4h 40m
2026-07-19 VOS4323 - Jul 19, 21:10 UTCJul 20, 02:30 UTC5h 20m
2026-07-19 VOS4322 - Jul 19, 14:05 UTCJul 19, 19:25 UTC5h 20m
2026-07-19 VOS4313 - Jul 19, 07:00 UTCJul 19, 10:45 UTC3h 45m
2026-07-19 VOS4312 - Jul 19, 00:55 UTCJul 19, 04:50 UTC3h 55m
2026-07-18 VOS4321 - Jul 18, 20:00 UTCJul 18, 22:20 UTC2h 20m
2026-07-18 VOS4320 - Jul 18, 15:30 UTCJul 18, 18:05 UTC2h 35m
2026-07-18 VOS4313 - Jul 18, 07:15 UTCJul 18, 11:05 UTC3h 50m
2026-07-18 VOS4312 - Jul 18, 01:20 UTCJul 18, 05:15 UTC3h 56m
2026-07-17 VOS4327 - Jul 17, 19:30 UTCJul 17, 23:30 UTC4h 0m
2026-07-17 VOS4326 - Jul 17, 13:35 UTCJul 17, 17:50 UTC4h 15m
2026-07-17 VOS4309 - Jul 17, 07:20 UTCJul 17, 11:50 UTC4h 30m
2026-07-17 VOS4308 - Jul 17, 00:30 UTCJul 17, 05:15 UTC4h 45m
2026-07-16 VOS4337 - Jul 16, 11:30 UTCJul 16, 15:35 UTC4h 5m
2026-07-16 VOS4336 - Jul 16, 05:00 UTCJul 16, 09:20 UTC4h 20m
2026-07-15 VOS4323 - Jul 15, 21:05 UTCJul 16, 02:20 UTC5h 15m
2026-07-15 VOS4322 - Jul 15, 14:00 UTCJul 15, 19:25 UTC5h 25m
2026-07-15 VOS4309 - Jul 15, 07:05 UTCJul 15, 11:40 UTC4h 35m
2026-07-15 VOS4308 - Jul 15, 00:30 UTCJul 15, 05:05 UTC4h 35m
2026-07-14 VOS4337 - Jul 14, 11:10 UTCJul 14, 15:15 UTC4h 5m
2026-07-14 VOS4336 - Jul 14, 04:50 UTCJul 14, 09:15 UTC4h 25m
2026-07-13 VOS4323 - Jul 13, 21:10 UTCJul 14, 02:35 UTC5h 25m
2026-07-13 VOS4322 - Jul 13, 13:45 UTCJul 13, 19:00 UTC5h 15m
2026-07-13 VOS4309 - Jul 13, 07:15 UTCJul 13, 11:55 UTC4h 40m
2026-07-13 VOS4308 - Jul 13, 00:25 UTCJul 13, 05:10 UTC4h 45m
2026-07-12 VOS4331 - Jul 12, 18:20 UTCJul 12, 23:00 UTC4h 40m
2026-07-12 VOS4330 - Jul 12, 11:25 UTCJul 12, 16:01 UTC4h 35m
2026-07-11 VOS4321 - Jul 11, 20:00 UTCJul 11, 22:20 UTC2h 20m
2026-07-11 VOS4320 - Jul 11, 15:30 UTCJul 11, 18:00 UTC2h 30m
2026-07-11 VOS4309 - Jul 11, 07:25 UTCJul 11, 12:05 UTC4h 40m
2026-07-11 VOS4308 - Jul 11, 00:45 UTCJul 11, 05:25 UTC4h 40m
2026-07-10 VOS4327 - Jul 10, 19:15 UTCJul 10, 23:00 UTC3h 46m
2026-07-10 VOS4326 - Jul 10, 13:25 UTCJul 10, 17:10 UTC3h 45m
2026-07-10 VOS4313 - Jul 10, 07:05 UTCJul 10, 10:45 UTC3h 40m
2026-07-10 VOS4312 - Jul 10, 01:15 UTCJul 10, 05:05 UTC3h 50m
2026-07-09 VOS4327 - Jul 9, 19:20 UTCJul 9, 23:20 UTC4h 0m
2026-07-09 VOS4326 - Jul 9, 13:40 UTCJul 9, 17:25 UTC3h 45m
2026-07-09 VOS4309 - Jul 9, 07:10 UTCJul 9, 11:45 UTC4h 35m
2026-07-09 VOS4308 - Jul 9, 00:35 UTCJul 9, 05:20 UTC4h 45m
2026-07-08 VOS4301 - Jul 8, 16:00 UTCJul 8, 17:35 UTC1h 35m
2026-07-08 VOI391 - Jul 8, 04:10 UTCJul 8, 04:25 UTC15m
2026-07-07 VOI550 - Jul 7, 21:15 UTCJul 7, 21:25 UTC10m
2026-07-07 VOI390 - Jul 7, 12:20 UTCJul 7, 12:35 UTC15m

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 N546VL page for operator, model, and routing details .

Mode-S A6F01C frequently asked

What is Mode-S code A6F01C?
A6F01C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N546VL.
Where is Mode-S A6F01C registered?
Mode-S code A6F01C 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 A6F01C broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 05:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6F01C, octal 51570034, decimal 10,940,444.
What flights does A6F01C operate?
Mode-S A6F01C has broadcast 20 distinct callsigns, including VOS4308, VOS4309, VOS4312, VOS4326, VOS4313.