Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6FB41

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N549VL · AIRBUS A-320neo · operated by BANK OF UTAH TRUSTEE

Hex
A6FB41
Octal
51575501
Decimal
10,943,297
Country
US
Tail
N549VL
Type
A20N
No current signal · last broadcast 46m ago
Flights observed
228
Distinct callsigns
20
Country
US
Last broadcast
46m ago

Last known position

Most recent position reported by Mode-S A6FB41.

Country allocation

The ICAO 24-bit address A6FB41 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 - 25 2026-07-14
VOS4309 - 22 2026-07-14
VOS4313 - 18 2026-07-07
VOS4312 - 17 2026-07-07
VOS4322 - 13 2026-07-12
VOS4323 - 12 2026-07-12
VOS4326 - 9 2026-07-06
VOS4320 - 9 2026-07-07
VOS4327 - 8 2026-07-06
VOS4321 - 8 2026-07-07
VOS4337 - 5 2026-07-11
VOS4336 - 5 2026-07-11
VOI391 Volaris 5 2026-06-06
VOI390 Volaris 5 2026-06-05
VOC4063 Volaris Costa Rica 5 2026-04-16
VOS4317 - 3 2026-04-12
VOS4300 - 3 2026-06-17
VOC4062 Volaris Costa Rica 3 2026-04-20
VOS4331 - 2 2026-07-13
VOS4330 - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 VOS4309 - Jul 14, 07:00 UTCJul 14, 11:40 UTC4h 40m
2026-07-14 VOS4308 - Jul 14, 00:25 UTCJul 14, 05:00 UTC4h 35m
2026-07-13 VOS4331 - Jul 13, 18:10 UTCJul 13, 22:40 UTC4h 30m
2026-07-13 VOS4330 - Jul 13, 11:35 UTCJul 13, 16:05 UTC4h 30m
2026-07-12 VOS4323 - Jul 12, 21:10 UTCJul 13, 02:45 UTC5h 35m
2026-07-12 VOS4322 - Jul 12, 14:05 UTCJul 12, 19:15 UTC5h 10m
2026-07-12 VOS4309 - Jul 12, 07:45 UTCJul 12, 12:25 UTC4h 40m
2026-07-12 VOS4308 - Jul 12, 01:20 UTCJul 12, 06:01 UTC4h 40m
2026-07-11 VOS4337 - Jul 11, 11:30 UTCJul 11, 15:40 UTC4h 10m
2026-07-11 VOS4336 - Jul 11, 05:10 UTCJul 11, 09:40 UTC4h 30m
2026-07-10 VOS4323 - Jul 10, 21:15 UTCJul 11, 03:05 UTC5h 50m
2026-07-10 VOS4322 - Jul 10, 14:55 UTCJul 10, 19:20 UTC4h 25m
2026-07-10 VOS4322 - Jul 10, 14:10 UTCJul 10, 14:30 UTC20m
2026-07-10 VOS4309 - Jul 10, 08:00 UTCJul 10, 12:25 UTC4h 25m
2026-07-10 VOS4308 - Jul 10, 01:10 UTCJul 10, 06:00 UTC4h 50m
2026-07-09 VOS4337 - Jul 9, 11:20 UTCJul 9, 15:40 UTC4h 20m
2026-07-09 VOS4336 - Jul 9, 04:55 UTCJul 9, 09:10 UTC4h 15m
2026-07-08 VOS4323 - Jul 8, 21:15 UTCJul 9, 02:30 UTC5h 15m
2026-07-08 VOS4322 - Jul 8, 14:05 UTCJul 8, 19:30 UTC5h 25m
2026-07-08 VOS4309 - Jul 8, 07:10 UTCJul 8, 11:30 UTC4h 20m
2026-07-08 VOS4308 - Jul 8, 01:20 UTCJul 8, 05:20 UTC4h 0m
2026-07-08 VOS4308 - Jul 8, 00:35 UTCJul 8, 00:55 UTC20m
2026-07-07 VOS4321 - Jul 7, 20:05 UTCJul 7, 22:30 UTC2h 25m
2026-07-07 VOS4320 - Jul 7, 15:25 UTCJul 7, 17:55 UTC2h 30m
2026-07-07 VOS4313 - Jul 7, 07:20 UTCJul 7, 11:10 UTC3h 50m
2026-07-07 VOS4312 - Jul 7, 01:50 UTCJul 7, 05:30 UTC3h 40m
2026-07-06 VOS4327 - Jul 6, 20:00 UTCJul 6, 23:55 UTC3h 55m
2026-07-06 VOS4326 - Jul 6, 14:45 UTCJul 6, 18:15 UTC3h 30m
2026-07-06 VOS4309 - Jul 6, 08:30 UTCJul 6, 12:50 UTC4h 20m
2026-07-06 VOS4308 - Jul 6, 01:10 UTCJul 6, 06:10 UTC5h 0m
2026-07-05 VOS4331 - Jul 5, 18:25 UTCJul 5, 22:40 UTC4h 15m
2026-07-05 VOS4330 - Jul 5, 11:30 UTCJul 5, 16:20 UTC4h 50m
2026-07-04 VOS6404 - Jul 4, 21:00 UTCJul 4, 23:45 UTC2h 45m
2026-07-04 VOS6800 - Jul 4, 15:30 UTCJul 4, 18:40 UTC3h 10m
2026-07-04 VOS4313 - Jul 4, 07:00 UTCJul 4, 10:45 UTC3h 45m
2026-07-04 VOS4312 - Jul 4, 01:10 UTCJul 4, 05:00 UTC3h 50m
2026-07-03 VOS4327 - Jul 3, 19:10 UTCJul 3, 23:00 UTC3h 50m
2026-07-03 VOS4326 - Jul 3, 13:35 UTCJul 3, 17:15 UTC3h 40m
2026-07-03 VOS4309 - Jul 3, 06:55 UTCJul 3, 11:15 UTC4h 20m
2026-07-03 VOS4308 - Jul 3, 00:25 UTCJul 3, 05:20 UTC4h 55m
2026-07-02 VOS4321 - Jul 2, 20:05 UTCJul 2, 22:25 UTC2h 20m
2026-07-02 VOS4320 - Jul 2, 15:30 UTCJul 2, 17:55 UTC2h 25m
2026-07-02 VOS4309 - Jul 2, 07:00 UTCJul 2, 11:30 UTC4h 30m
2026-07-02 VOS4308 - Jul 2, 00:20 UTCJul 2, 05:05 UTC4h 45m
2026-07-01 VOS4309 - Jul 1, 07:25 UTCJul 1, 11:45 UTC4h 20m
2026-07-01 VOS4308 - Jul 1, 00:20 UTCJul 1, 05:30 UTC5h 10m
2026-06-30 VOS4309 - Jun 30, 07:40 UTCJun 30, 11:50 UTC4h 10m
2026-06-29 VOI1720 - Jun 29, 13:09 UTCJun 30, 05:55 UTC16h 45m
2026-06-26 VOI3044 - Jun 26, 20:34 UTCJun 27, 02:55 UTC6h 20m
2026-06-26 VOI5608 - Jun 26, 16:24 UTCJun 26, 18:44 UTC2h 20m

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 N549VL page for operator, model, and routing details .

Mode-S A6FB41 frequently asked

What is Mode-S code A6FB41?
A6FB41 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N549VL.
Where is Mode-S A6FB41 registered?
Mode-S code A6FB41 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 A6FB41 broadcasting right now?
No active broadcast right now. Last signal was 46m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6FB41, octal 51575501, decimal 10,943,297.
What flights does A6FB41 operate?
Mode-S A6FB41 has broadcast 20 distinct callsigns, including VOS4308, VOS4309, VOS4313, VOS4312, VOS4322.