Apparatus

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sensors Mode-S transponder

A74DA8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N57SH · LEARJET 75 · operated by SANFORD HEALTH

Hex
A74DA8
Octal
51646650
Decimal
10,964,392
Country
US
Tail
N57SH
Type
LJ75
No current signal · last broadcast Jul 23, 21:35 UTC
Flights observed
69
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 21:35 UTC

Last known position

Most recent position reported by Mode-S A74DA8.

Country allocation

The ICAO 24-bit address A74DA8 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
N57SH - 69 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N57SH MFI → FSD Jul 23, 20:30 UTCJul 23, 21:30 UTC1h 0m
2026-07-23 N57SH - Jul 23, 12:45 UTCJul 23, 13:30 UTC45m
2026-07-22 N57SH MSP → FSD Jul 22, 21:35 UTCJul 22, 22:05 UTC30m
2026-07-22 N57SH FSD → MSP Jul 22, 14:00 UTCJul 22, 14:35 UTC35m
2026-07-22 N57SH FSD → FSD Jul 22, 11:40 UTCJul 22, 13:15 UTC1h 35m
2026-07-21 N57SH - Jul 21, 20:35 UTCJul 21, 21:00 UTC25m
2026-07-21 N57SH - Jul 21, 12:35 UTCJul 21, 12:50 UTC15m
2026-07-20 N57SH - Jul 20, 22:20 UTCJul 20, 23:00 UTC40m
2026-07-20 N57SH - Jul 20, 12:15 UTCJul 20, 12:55 UTC40m
2026-07-16 N57SH - Jul 16, 21:15 UTCJul 16, 21:50 UTC35m
2026-07-16 N57SH - Jul 16, 11:40 UTCJul 16, 12:25 UTC45m
2026-07-15 N57SH - Jul 15, 21:20 UTCJul 15, 22:00 UTC40m
2026-07-15 N57SH - Jul 15, 11:50 UTCJul 15, 12:25 UTC35m
2026-07-14 N57SH - Jul 14, 16:25 UTCJul 14, 17:00 UTC35m
2026-07-14 N57SH - Jul 14, 11:40 UTCJul 14, 12:15 UTC35m
2026-07-13 N57SH - Jul 13, 22:00 UTCJul 13, 22:40 UTC40m
2026-07-13 N57SH - Jul 13, 12:15 UTCJul 13, 12:50 UTC35m
2026-07-11 N57SH - Jul 11, 18:35 UTCJul 11, 19:00 UTC25m
2026-07-08 N57SH - Jul 8, 18:00 UTCJul 8, 20:30 UTC2h 30m
2026-07-08 N57SH - Jul 8, 13:05 UTCJul 8, 17:05 UTC4h 0m
2026-07-08 N57SH FSD → MSP Jul 8, 11:35 UTCJul 8, 12:15 UTC40m
2026-07-08 N57SH - Jul 8, 02:00 UTCJul 8, 02:30 UTC30m
2026-07-07 N57SH - Jul 7, 20:35 UTCJul 7, 21:05 UTC30m
2026-07-07 N57SH - Jul 7, 17:10 UTCJul 7, 19:30 UTC2h 20m
2026-07-07 N57SH - Jul 7, 13:30 UTCJul 7, 16:25 UTC2h 55m
2026-07-06 N57SH - Jul 6, 19:45 UTCJul 6, 20:20 UTC35m
2026-07-06 N57SH - Jul 6, 12:15 UTCJul 6, 12:50 UTC35m
2026-07-02 N57SH - Jul 2, 20:05 UTCJul 2, 20:40 UTC35m
2026-07-02 N57SH - Jul 2, 11:35 UTCJul 2, 12:10 UTC35m
2026-07-01 N57SH - Jul 1, 21:40 UTCJul 1, 22:15 UTC35m
2026-07-01 N57SH - Jul 1, 11:45 UTCJul 1, 12:25 UTC40m
2026-06-26 N57SH - Jun 26, 16:44 UTCJun 26, 17:40 UTC55m
2026-06-24 N57SH - Jun 24, 15:39 UTCJun 24, 16:19 UTC40m
2026-06-24 N57SH - Jun 24, 13:14 UTCJun 24, 13:44 UTC30m
2026-06-24 N57SH - Jun 24, 11:45 UTCJun 24, 12:25 UTC40m
2026-06-18 N57SH - Jun 18, 03:45 UTCJun 18, 04:15 UTC30m
2026-06-17 N57SH - Jun 17, 15:10 UTCJun 17, 15:50 UTC40m
2026-06-12 N57SH - Jun 12, 22:25 UTCJun 12, 23:40 UTC1h 15m
2026-06-12 N57SH - Jun 12, 15:35 UTCJun 12, 17:15 UTC1h 40m
2026-06-10 N57SH - Jun 10, 20:55 UTCJun 10, 22:45 UTC1h 50m
2026-06-09 N57SH MSP → MDW Jun 9, 02:10 UTCJun 9, 03:15 UTC1h 5m
2026-06-08 N57SH - Jun 8, 20:10 UTCJun 8, 21:05 UTC55m
2026-06-07 N57SH - Jun 7, 22:05 UTCJun 7, 23:15 UTC1h 10m
2026-06-07 N57SH - Jun 7, 20:15 UTCJun 7, 20:50 UTC35m
2026-06-06 N57SH - Jun 6, 04:20 UTCJun 6, 04:55 UTC35m
2026-06-06 N57SH - Jun 6, 03:35 UTCJun 6, 04:00 UTC25m
2026-06-05 N57SH - Jun 5, 21:45 UTCJun 5, 21:55 UTC10m
2026-06-03 N57SH MSP → FSD Jun 3, 17:35 UTCJun 3, 18:10 UTC35m
2026-06-03 N57SH - Jun 3, 14:10 UTCJun 3, 14:45 UTC35m
2026-06-03 N57SH MSP → FAR Jun 3, 13:00 UTCJun 3, 13:35 UTC35m

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 N57SH page for operator, model, and routing details .

Mode-S A74DA8 frequently asked

What is Mode-S code A74DA8?
A74DA8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N57SH.
Where is Mode-S A74DA8 registered?
Mode-S code A74DA8 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 A74DA8 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A74DA8, octal 51646650, decimal 10,964,392.
What flights does A74DA8 operate?
Mode-S A74DA8 has broadcast 1 distinct callsign, including N57SH.