Apparatus

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sensors Mode-S transponder

A74D68

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N57PU · DIAMOND DA-40 Club Star · operated by EIGHT BALL FLYING CLUB

Hex
A74D68
Octal
51646550
Decimal
10,964,328
Country
US
Tail
N57PU
Type
DA40
No current signal · last broadcast 1d ago
Flights observed
68
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A74D68.

Country allocation

The ICAO 24-bit address A74D68 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
N57PU - 68 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N57PU VNY → VNY Jul 17, 04:39 UTCJul 17, 04:44 UTC5m
2026-07-17 N57PU VNY → VNY Jul 17, 04:04 UTCJul 17, 04:25 UTC20m
2026-07-15 N57PU CCB → VNY Jul 15, 05:30 UTCJul 15, 06:00 UTC30m
2026-07-15 N57PU - Jul 15, 04:20 UTCJul 15, 04:45 UTC25m
2026-07-15 N57PU - Jul 15, 02:50 UTCJul 15, 03:00 UTC10m
2026-07-15 N57PU - Jul 15, 01:55 UTCJul 15, 02:10 UTC15m
2026-07-13 N57PU VNY → VNY Jul 13, 07:35 UTCJul 13, 08:05 UTC30m
2026-07-13 N57PU - Jul 13, 02:50 UTCJul 13, 03:01 UTC10m
2026-07-13 N57PU - Jul 13, 01:35 UTCJul 13, 01:55 UTC20m
2026-07-12 N57PU VNY → VNY Jul 12, 00:30 UTCJul 12, 00:50 UTC20m
2026-07-12 N57PU VNY → VNY Jul 12, 00:05 UTCJul 12, 00:25 UTC20m
2026-07-11 N57PU VNY → VNY Jul 11, 23:20 UTCJul 11, 23:55 UTC35m
2026-07-11 N57PU VNY → VNY Jul 11, 17:20 UTCJul 11, 17:35 UTC15m
2026-07-11 N57PU VNY → VNY Jul 11, 16:40 UTCJul 11, 17:15 UTC35m
2026-07-07 N57PU - Jul 7, 16:10 UTCJul 7, 16:20 UTC10m
2026-07-07 N57PU - Jul 7, 14:45 UTCJul 7, 15:05 UTC20m
2026-07-06 N57PU - Jul 6, 17:50 UTCJul 6, 18:55 UTC1h 5m
2026-07-04 N57PU VNY → VNY Jul 4, 04:45 UTCJul 4, 05:05 UTC20m
2026-06-23 N57PU VNY → VNY Jun 23, 06:34 UTCJun 23, 06:55 UTC20m
2026-06-22 N57PU VNY → VNY Jun 22, 23:35 UTCJun 22, 23:55 UTC20m
2026-06-21 N57PU - Jun 21, 18:39 UTCJun 21, 22:00 UTC3h 20m
2026-06-21 N57PU - Jun 21, 17:35 UTCJun 21, 18:00 UTC25m
2026-06-21 N57PU - Jun 21, 14:15 UTCJun 21, 16:14 UTC2h 0m
2026-06-20 N57PU - Jun 20, 14:29 UTCJun 20, 14:59 UTC30m
2026-06-18 N57PU - Jun 18, 17:40 UTCJun 18, 20:05 UTC2h 25m
2026-06-18 N57PU - Jun 18, 13:40 UTCJun 18, 16:35 UTC2h 55m
2026-06-16 N57PU - Jun 16, 15:40 UTCJun 16, 17:45 UTC2h 5m
2026-06-14 N57PU - Jun 14, 08:45 UTCJun 14, 09:00 UTC15m
2026-06-14 N57PU - Jun 14, 02:20 UTCJun 14, 02:40 UTC20m
2026-06-13 N57PU VNY → VNY Jun 13, 16:35 UTCJun 13, 17:25 UTC50m
2026-06-12 N57PU - Jun 12, 22:55 UTCJun 12, 23:15 UTC20m
2026-05-30 N57PU - May 30, 14:45 UTCMay 30, 15:00 UTC15m
2026-05-21 N57PU VNY → VNY May 21, 14:15 UTCMay 21, 15:10 UTC55m
2026-05-19 N57PU VNY → VNY May 19, 16:45 UTCMay 19, 18:15 UTC1h 30m
2026-05-14 N57PU - May 14, 22:15 UTCMay 14, 22:25 UTC10m
2026-05-14 N57PU - May 14, 21:05 UTCMay 14, 21:20 UTC15m
2026-05-14 N57PU VNY → VNY May 14, 20:05 UTCMay 14, 20:10 UTC5m
2026-05-14 N57PU - May 14, 18:25 UTCMay 14, 19:05 UTC40m
2026-05-14 N57PU WHP → VNY May 14, 17:15 UTCMay 14, 17:30 UTC15m
2026-05-14 N57PU VNY → WHP May 14, 16:55 UTCMay 14, 17:10 UTC15m
2026-05-10 N57PU - May 10, 22:45 UTCMay 11, 00:15 UTC1h 30m
2026-05-09 N57PU - May 9, 23:05 UTCMay 9, 23:40 UTC35m
2026-05-09 N57PU - May 9, 19:25 UTCMay 9, 20:00 UTC35m
2026-05-09 N57PU VNY → VNY May 9, 17:25 UTCMay 9, 18:30 UTC1h 5m
2026-05-08 N57PU - May 8, 23:10 UTCMay 9, 00:10 UTC1h 0m
2026-05-08 N57PU - May 8, 17:50 UTCMay 8, 18:40 UTC50m
2026-05-07 N57PU - May 7, 04:40 UTCMay 7, 06:25 UTC1h 45m
2026-05-05 N57PU - May 5, 20:01 UTCMay 5, 21:10 UTC1h 10m
2026-05-04 N57PU VNY → VNY May 4, 20:15 UTCMay 4, 20:55 UTC40m
2026-05-03 N57PU VNY → VNY May 3, 22:39 UTCMay 4, 00:19 UTC1h 40m

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 N57PU page for operator, model, and routing details .

Mode-S A74D68 frequently asked

What is Mode-S code A74D68?
A74D68 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N57PU.
Where is Mode-S A74D68 registered?
Mode-S code A74D68 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 A74D68 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A74D68, octal 51646550, decimal 10,964,328.
What flights does A74D68 operate?
Mode-S A74D68 has broadcast 1 distinct callsign, including N57PU.