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sensors Mode-S transponder

A6558F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N507SP · BELL 407 · operated by STATE OF INDIANA, INDIANA STATE POLICE

Hex
A6558F
Octal
51452617
Decimal
10,900,879
Country
US
Tail
N507SP
Type
B407
No current signal · last broadcast Jul 23, 02:45 UTC
Flights observed
68
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 02:45 UTC

Last known position

Most recent position reported by Mode-S A6558F.

Country allocation

The ICAO 24-bit address A6558F 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 1 distinct

Callsign Airline Flights Last seen
N507SP - 68 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N507SP - Jul 23, 01:55 UTCJul 23, 02:45 UTC50m
2026-07-20 N507SP - Jul 20, 13:20 UTCJul 20, 13:30 UTC10m
2026-07-16 N507SP - Jul 16, 14:45 UTCJul 16, 14:55 UTC10m
2026-07-16 N507SP - Jul 16, 12:49 UTCJul 16, 13:30 UTC40m
2026-07-13 N507SP - Jul 13, 20:10 UTCJul 13, 20:35 UTC25m
2026-07-10 N507SP - Jul 10, 21:50 UTCJul 10, 22:35 UTC45m
2026-07-10 N507SP - Jul 10, 13:50 UTCJul 10, 14:55 UTC1h 5m
2026-07-07 N507SP - Jul 7, 17:55 UTCJul 7, 18:50 UTC55m
2026-07-04 N507SP - Jul 4, 13:30 UTCJul 4, 14:45 UTC1h 15m
2026-07-03 N507SP - Jul 3, 14:05 UTCJul 3, 15:45 UTC1h 40m
2026-07-02 N507SP - Jul 2, 16:05 UTCJul 2, 17:10 UTC1h 5m
2026-07-01 N507SP - Jul 1, 16:45 UTCJul 1, 17:00 UTC15m
2026-07-01 N507SP - Jul 1, 14:30 UTCJul 1, 14:45 UTC15m
2026-06-30 N507SP - Jun 30, 23:10 UTCJun 30, 23:20 UTC10m
2026-06-29 N507SP - Jun 29, 19:20 UTCJun 29, 20:15 UTC55m
2026-06-29 N507SP - Jun 29, 13:54 UTCJun 29, 14:14 UTC20m
2026-06-27 N507SP - Jun 27, 20:14 UTCJun 27, 20:55 UTC40m
2026-06-27 N507SP - Jun 27, 18:04 UTCJun 27, 18:49 UTC45m
2026-06-25 N507SP - Jun 25, 18:10 UTCJun 25, 20:54 UTC2h 45m
2026-06-24 N507SP - Jun 24, 18:09 UTCJun 24, 18:50 UTC40m
2026-06-24 N507SP - Jun 24, 15:00 UTCJun 24, 15:09 UTC10m
2026-06-24 N507SP - Jun 24, 12:20 UTCJun 24, 12:30 UTC10m
2026-06-23 N507SP - Jun 23, 15:30 UTCJun 23, 15:44 UTC15m
2026-06-23 N507SP - Jun 23, 13:15 UTCJun 23, 13:34 UTC20m
2026-06-21 N507SP - Jun 21, 07:09 UTCJun 21, 07:25 UTC15m
2026-06-20 N507SP - Jun 20, 22:35 UTCJun 20, 22:50 UTC15m
2026-06-20 N507SP - Jun 20, 05:24 UTCJun 20, 05:39 UTC15m
2026-06-19 N507SP - Jun 19, 21:59 UTCJun 19, 22:14 UTC15m
2026-06-19 N507SP - Jun 19, 20:09 UTCJun 19, 21:14 UTC1h 5m
2026-06-15 N507SP - Jun 15, 14:45 UTCJun 15, 15:40 UTC55m
2026-06-13 N507SP - Jun 13, 06:00 UTCJun 13, 06:15 UTC15m
2026-06-13 N507SP - Jun 13, 05:00 UTCJun 13, 05:25 UTC25m
2026-06-13 N507SP - Jun 13, 00:20 UTCJun 13, 01:05 UTC45m
2026-06-12 N507SP - Jun 12, 23:05 UTCJun 12, 23:40 UTC35m
2026-06-11 N507SP - Jun 11, 18:55 UTCJun 11, 19:05 UTC10m
2026-06-11 N507SP - Jun 11, 13:15 UTCJun 11, 14:00 UTC45m
2026-06-10 N507SP - Jun 10, 18:15 UTCJun 10, 18:25 UTC10m
2026-06-10 N507SP - Jun 10, 17:10 UTCJun 10, 17:25 UTC15m
2026-06-09 N507SP - Jun 9, 18:05 UTCJun 9, 20:20 UTC2h 15m
2026-06-08 N507SP - Jun 8, 14:40 UTCJun 8, 15:04 UTC25m
2026-06-07 N507SP - Jun 7, 14:20 UTCJun 7, 14:45 UTC25m
2026-06-05 N507SP - Jun 5, 15:10 UTCJun 5, 15:55 UTC45m
2026-06-03 N507SP - Jun 3, 18:50 UTCJun 3, 19:05 UTC15m
2026-05-26 N507SP - May 26, 16:55 UTCMay 26, 17:39 UTC45m
2026-05-26 N507SP - May 26, 13:54 UTCMay 26, 14:14 UTC20m
2026-05-26 N507SP - May 26, 09:19 UTCMay 26, 10:39 UTC1h 20m
2026-05-26 N507SP - May 26, 07:45 UTCMay 26, 08:15 UTC30m
2026-05-24 N507SP - May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 N507SP - May 24, 21:25 UTCMay 24, 21:45 UTC20m
2026-05-22 N507SP - May 22, 06:20 UTCMay 22, 06:35 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 N507SP page for operator, model, and routing details .

Mode-S A6558F frequently asked

What is Mode-S code A6558F?
A6558F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N507SP.
Where is Mode-S A6558F registered?
Mode-S code A6558F 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 A6558F broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 02:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6558F, octal 51452617, decimal 10,900,879.
What flights does A6558F operate?
Mode-S A6558F has broadcast 1 distinct callsign, including N507SP.