Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A611A9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N490SA · CESSNA 208 Caravan · operated by SUMMIT HELICOPTERS INC

Hex
A611A9
Octal
51410651
Decimal
10,883,497
Country
US
Tail
N490SA
Type
C208
Broadcasting now · callsign N490SA · 5,000 ft
Flights observed
528
Distinct callsigns
11
Country
US
Last broadcast
Jul 26, 21:40 UTC

Current position

A611A9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A611A9 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 11 distinct

Callsign Airline Flights Last seen
N490SA - 460 2026-07-12
FDY90 - 47 2026-07-26
FDY751 Southern Airways Express 7 2026-06-11
FDY8052 Southern Airways Express 4 2026-05-02
FDY8035 - 3 2026-04-15
FDY8034 - 2 2026-04-15
FDY849 - 1 2026-06-25
FDY8046 - 1 2026-04-16
FDY8045 - 1 2026-04-16
FDY8036 - 1 2026-04-16
FDY750 Southern Airways Express 1 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FDY90 - Jul 26, 21:15 UTCJul 26, 21:40 UTC25m
2026-07-26 FDY90 - Jul 26, 20:10 UTCJul 26, 20:20 UTC10m
2026-07-26 FDY90 - Jul 26, 18:50 UTCJul 26, 19:10 UTC20m
2026-07-26 FDY90 - Jul 26, 17:45 UTCJul 26, 18:10 UTC25m
2026-07-26 FDY90 - Jul 26, 16:40 UTCJul 26, 17:00 UTC20m
2026-07-26 FDY90 - Jul 26, 15:45 UTCJul 26, 16:05 UTC20m
2026-07-25 FDY90 - Jul 25, 21:25 UTCJul 25, 21:50 UTC25m
2026-07-25 FDY90 - Jul 25, 20:05 UTCJul 25, 20:30 UTC25m
2026-07-25 FDY90 - Jul 25, 18:55 UTCJul 25, 19:20 UTC25m
2026-07-25 FDY90 - Jul 25, 17:50 UTCJul 25, 18:10 UTC20m
2026-07-25 FDY90 - Jul 25, 16:55 UTCJul 25, 17:15 UTC20m
2026-07-25 FDY90 - Jul 25, 15:55 UTCJul 25, 16:10 UTC15m
2026-07-24 FDY90 - Jul 24, 07:20 UTCJul 24, 07:30 UTC10m
2026-07-24 FDY90 - Jul 24, 05:45 UTCJul 24, 05:50 UTC5m
2026-07-24 FDY90 - Jul 24, 00:45 UTCJul 24, 01:40 UTC55m
2026-07-23 FDY90 - Jul 23, 23:25 UTCJul 23, 23:35 UTC10m
2026-07-23 FDY90 - Jul 23, 22:35 UTCJul 23, 22:45 UTC10m
2026-07-23 FDY90 - Jul 23, 21:35 UTCJul 23, 21:45 UTC10m
2026-07-23 FDY90 - Jul 23, 20:40 UTCJul 23, 20:50 UTC10m
2026-07-23 FDY90 - Jul 23, 18:40 UTCJul 23, 19:35 UTC55m
2026-07-23 FDY90 - Jul 23, 17:20 UTCJul 23, 17:35 UTC15m
2026-07-23 FDY90 - Jul 23, 16:25 UTCJul 23, 16:35 UTC10m
2026-07-23 FDY90 - Jul 23, 01:25 UTCJul 23, 01:50 UTC25m
2026-07-23 FDY90 - Jul 23, 00:20 UTCJul 23, 00:45 UTC25m
2026-07-22 FDY90 - Jul 22, 23:20 UTCJul 22, 23:40 UTC20m
2026-07-22 FDY90 - Jul 22, 20:50 UTCJul 22, 21:00 UTC10m
2026-07-22 FDY90 - Jul 22, 19:35 UTCJul 22, 19:55 UTC20m
2026-07-22 FDY90 - Jul 22, 18:15 UTCJul 22, 18:30 UTC15m
2026-07-22 FDY90 - Jul 22, 17:15 UTCJul 22, 17:40 UTC25m
2026-07-22 FDY90 - Jul 22, 16:35 UTCJul 22, 16:45 UTC10m
2026-07-13 FDY90 - Jul 13, 05:20 UTCJul 13, 05:31 UTC10m
2026-07-13 FDY90 - Jul 13, 02:25 UTCJul 13, 02:40 UTC15m
2026-07-12 N490SA - Jul 12, 22:45 UTCJul 12, 23:20 UTC35m
2026-07-12 N490SA - Jul 12, 21:50 UTCJul 12, 22:05 UTC15m
2026-07-12 N490SA - Jul 12, 20:35 UTCJul 12, 20:45 UTC10m
2026-07-12 N490SA - Jul 12, 19:20 UTCJul 12, 19:35 UTC15m
2026-07-12 N490SA - Jul 12, 17:30 UTCJul 12, 17:50 UTC20m
2026-07-12 N490SA - Jul 12, 16:40 UTCJul 12, 16:55 UTC15m
2026-07-12 N490SA - Jul 12, 04:50 UTCJul 12, 05:01 UTC10m
2026-07-12 N490SA - Jul 12, 03:55 UTCJul 12, 04:10 UTC15m
2026-07-11 N490SA - Jul 11, 22:25 UTCJul 11, 22:50 UTC25m
2026-07-11 N490SA - Jul 11, 21:10 UTCJul 11, 21:35 UTC25m
2026-07-11 N490SA - Jul 11, 16:35 UTCJul 11, 17:30 UTC55m
2026-07-11 N490SA - Jul 11, 04:15 UTCJul 11, 04:30 UTC15m
2026-07-11 N490SA - Jul 11, 03:15 UTCJul 11, 03:35 UTC20m
2026-07-11 N490SA - Jul 11, 02:05 UTCJul 11, 02:30 UTC25m
2026-07-11 N490SA - Jul 11, 01:10 UTCJul 11, 01:25 UTC15m
2026-07-10 N490SA - Jul 10, 23:40 UTCJul 11, 00:00 UTC20m
2026-07-10 N490SA - Jul 10, 21:50 UTCJul 10, 22:05 UTC15m
2026-07-10 N490SA - Jul 10, 18:50 UTCJul 10, 19:05 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 N490SA page for operator, model, and routing details .

Mode-S A611A9 frequently asked

What is Mode-S code A611A9?
A611A9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N490SA.
Where is Mode-S A611A9 registered?
Mode-S code A611A9 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 A611A9 broadcasting right now?
Yes. Mode-S A611A9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A611A9, octal 51410651, decimal 10,883,497.
What flights does A611A9 operate?
Mode-S A611A9 has broadcast 11 distinct callsigns, including N490SA, FDY90, FDY751, FDY8052, FDY8035.