Apparatus

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sensors Mode-S transponder

A29EF4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N268Z · operated by MEWMEW INVESTMENT II LLC

Hex
A29EF4
Octal
50517364
Decimal
10,657,524
Country
US
Tail
N268Z
Type
C172
No current signal · last broadcast 13h ago
Flights observed
263
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A29EF4.

Country allocation

The ICAO 24-bit address A29EF4 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
N268Z - 263 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N268Z PAO → PAO Jul 17, 22:29 UTCJul 17, 23:25 UTC55m
2026-07-17 N268Z PAO → PAO Jul 17, 19:15 UTCJul 17, 20:00 UTC45m
2026-07-17 N268Z PAO → PAO Jul 17, 02:34 UTCJul 17, 03:39 UTC1h 5m
2026-07-16 N268Z - Jul 16, 22:05 UTCJul 16, 22:35 UTC30m
2026-07-16 N268Z - Jul 16, 17:45 UTCJul 16, 18:15 UTC30m
2026-07-16 N268Z PAO → PAO Jul 16, 00:50 UTCJul 16, 02:15 UTC1h 25m
2026-07-15 N268Z PAO → PAO Jul 15, 20:25 UTCJul 15, 21:10 UTC45m
2026-07-15 N268Z PAO → PAO Jul 15, 20:05 UTCJul 15, 20:10 UTC5m
2026-07-15 N268Z PAO → PAO Jul 15, 17:40 UTCJul 15, 18:40 UTC1h 0m
2026-07-15 N268Z PAO → PAO Jul 15, 14:55 UTCJul 15, 15:45 UTC50m
2026-07-14 N268Z PAO → PAO Jul 14, 17:55 UTCJul 14, 18:40 UTC45m
2026-07-13 N268Z PAO → PAO Jul 13, 20:50 UTCJul 13, 22:30 UTC1h 40m
2026-07-13 N268Z PAO → PAO Jul 13, 17:05 UTCJul 13, 17:40 UTC35m
2026-07-13 N268Z PAO → PAO Jul 13, 00:55 UTCJul 13, 01:55 UTC1h 0m
2026-07-12 N268Z RHV → PAO Jul 12, 22:05 UTCJul 12, 22:50 UTC45m
2026-07-12 N268Z PAO → RHV Jul 12, 21:40 UTCJul 12, 21:55 UTC15m
2026-07-12 N268Z PAO → PAO Jul 12, 17:30 UTCJul 12, 18:50 UTC1h 20m
2026-07-11 N268Z PAO → PAO Jul 11, 23:50 UTCJul 12, 00:01 UTC10m
2026-07-11 N268Z - Jul 11, 23:35 UTCJul 11, 23:45 UTC10m
2026-07-11 N268Z PAO → PAO Jul 11, 22:30 UTCJul 11, 23:30 UTC1h 0m
2026-07-11 N268Z SQL → PAO Jul 11, 20:00 UTCJul 11, 21:00 UTC1h 0m
2026-07-11 N268Z PAO → SQL Jul 11, 19:35 UTCJul 11, 19:55 UTC20m
2026-07-09 N268Z - Jul 9, 00:00 UTCJul 9, 02:10 UTC2h 10m
2026-07-08 N268Z PAO → SBA Jul 8, 18:25 UTCJul 8, 20:20 UTC1h 55m
2026-07-07 N268Z PAO → PAO Jul 7, 23:15 UTCJul 7, 23:45 UTC30m
2026-07-07 N268Z PAO → PAO Jul 7, 21:00 UTCJul 7, 21:50 UTC50m
2026-07-06 N268Z PAO → PAO Jul 6, 21:20 UTCJul 6, 22:15 UTC55m
2026-07-06 N268Z PAO → PAO Jul 6, 19:25 UTCJul 6, 20:15 UTC50m
2026-07-05 N268Z PAO → PAO Jul 5, 22:30 UTCJul 5, 23:25 UTC55m
2026-07-05 N268Z - Jul 5, 20:05 UTCJul 5, 20:15 UTC10m
2026-07-05 N268Z PAO → HWD Jul 5, 19:10 UTCJul 5, 19:50 UTC40m
2026-07-04 N268Z PAO → PAO Jul 4, 22:00 UTCJul 4, 22:50 UTC50m
2026-07-03 N268Z PAO → PAO Jul 3, 19:55 UTCJul 3, 22:30 UTC2h 35m
2026-07-02 N268Z PAO → PAO Jul 2, 19:30 UTCJul 2, 21:00 UTC1h 30m
2026-07-01 N268Z PAO → PAO Jul 1, 21:30 UTCJul 1, 22:50 UTC1h 20m
2026-06-30 N268Z PAO → PAO Jun 30, 19:00 UTCJun 30, 20:20 UTC1h 20m
2026-06-30 N268Z PAO → PAO Jun 30, 02:15 UTCJun 30, 03:05 UTC50m
2026-06-29 N268Z PAO → PAO Jun 29, 21:39 UTCJun 29, 22:39 UTC1h 0m
2026-06-28 N268Z PAO → PAO Jun 28, 21:30 UTCJun 28, 22:20 UTC50m
2026-06-28 N268Z PAO → PAO Jun 28, 17:50 UTCJun 28, 19:49 UTC2h 0m
2026-06-28 N268Z PAO → PAO Jun 28, 01:50 UTCJun 28, 03:05 UTC1h 15m
2026-06-27 N268Z PAO → PAO Jun 27, 21:55 UTCJun 27, 23:10 UTC1h 15m
2026-06-26 N268Z PAO → PAO Jun 26, 23:39 UTCJun 27, 00:14 UTC35m
2026-06-26 N268Z NUQ → PAO Jun 26, 19:20 UTCJun 26, 19:24 UTC5m
2026-06-26 N268Z PAO → PAO Jun 26, 18:54 UTCJun 26, 19:14 UTC20m
2026-06-26 N268Z - Jun 26, 05:55 UTCJun 26, 06:50 UTC55m
2026-06-26 N268Z PAO → SAC Jun 26, 04:55 UTCJun 26, 05:44 UTC50m
2026-06-25 N268Z PAO → PAO Jun 25, 21:05 UTCJun 25, 22:10 UTC1h 5m
2026-06-25 N268Z PAO → PAO Jun 25, 18:00 UTCJun 25, 18:19 UTC20m
2026-06-25 N268Z - Jun 25, 17:44 UTCJun 25, 17:49 UTC5m

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 N268Z page for operator, model, and routing details .

Mode-S A29EF4 frequently asked

What is Mode-S code A29EF4?
A29EF4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N268Z.
Where is Mode-S A29EF4 registered?
Mode-S code A29EF4 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 A29EF4 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29EF4, octal 50517364, decimal 10,657,524.
What flights does A29EF4 operate?
Mode-S A29EF4 has broadcast 1 distinct callsign, including N268Z.