Apparatus

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sensors Mode-S transponder

AC188C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N879HZ · CESSNA 172 Skyhawk · operated by MEWMEW INVESTMENT LLC

Hex
AC188C
Octal
53014214
Decimal
11,278,476
Country
US
Tail
N879HZ
Type
C172
No current signal · last broadcast 10h ago
Flights observed
211
Distinct callsigns
2
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S AC188C.

Country allocation

The ICAO 24-bit address AC188C 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 2 distinct

Callsign Airline Flights Last seen
N879HZ - 209 2026-07-23
NGF7124 - 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N879HZ PAO → PAO Jul 23, 00:05 UTCJul 23, 02:40 UTC2h 35m
2026-07-22 N879HZ PAO → PAO Jul 22, 18:10 UTCJul 22, 19:50 UTC1h 40m
2026-07-21 N879HZ - Jul 21, 21:50 UTCJul 21, 23:05 UTC1h 15m
2026-07-21 N879HZ - Jul 21, 20:50 UTCJul 21, 21:20 UTC30m
2026-07-21 N879HZ - Jul 21, 18:15 UTCJul 21, 18:50 UTC35m
2026-07-21 N879HZ - Jul 21, 17:20 UTCJul 21, 18:10 UTC50m
2026-07-18 N879HZ PAO → PAO Jul 18, 22:30 UTCJul 18, 22:40 UTC10m
2026-07-18 N879HZ PAO → PAO Jul 18, 22:10 UTCJul 18, 22:25 UTC15m
2026-07-18 N879HZ PAO → PAO Jul 18, 21:15 UTCJul 18, 21:25 UTC10m
2026-07-18 N879HZ - Jul 18, 19:25 UTCJul 18, 19:50 UTC25m
2026-07-18 N879HZ - Jul 18, 19:10 UTCJul 18, 19:20 UTC10m
2026-07-18 N879HZ - Jul 18, 18:35 UTCJul 18, 19:05 UTC30m
2026-07-18 N879HZ PAO → PAO Jul 18, 00:00 UTCJul 18, 00:04 UTC5m
2026-07-17 N879HZ - Jul 17, 23:39 UTCJul 17, 23:50 UTC10m
2026-07-17 N879HZ PAO → PAO Jul 17, 21:50 UTCJul 17, 23:20 UTC1h 30m
2026-07-17 N879HZ PAO → PAO Jul 17, 18:44 UTCJul 17, 19:00 UTC15m
2026-07-16 N879HZ PAO → PAO Jul 16, 18:59 UTCJul 16, 19:14 UTC15m
2026-07-16 N879HZ PAO → PAO Jul 16, 02:35 UTCJul 16, 02:40 UTC5m
2026-07-16 N879HZ PAO → PAO Jul 16, 02:05 UTCJul 16, 02:30 UTC25m
2026-07-16 N879HZ PAO → PAO Jul 16, 01:50 UTCJul 16, 02:00 UTC10m
2026-07-15 N879HZ PAO → PAO Jul 15, 21:10 UTCJul 15, 21:15 UTC5m
2026-07-14 N879HZ - Jul 14, 18:30 UTCJul 14, 19:00 UTC30m
2026-07-14 N879HZ - Jul 14, 18:15 UTCJul 14, 18:25 UTC10m
2026-07-14 N879HZ - Jul 14, 17:40 UTCJul 14, 18:10 UTC30m
2026-07-14 N879HZ PAO → PAO Jul 14, 17:20 UTCJul 14, 17:35 UTC15m
2026-07-13 N879HZ PAO → PAO Jul 13, 20:40 UTCJul 13, 20:55 UTC15m
2026-07-13 N879HZ PAO → PAO Jul 13, 18:40 UTCJul 13, 20:30 UTC1h 50m
2026-07-12 N879HZ PAO → PAO Jul 12, 16:45 UTCJul 12, 18:35 UTC1h 50m
2026-07-11 N879HZ PAO → PAO Jul 11, 21:00 UTCJul 11, 21:55 UTC55m
2026-07-11 N879HZ PAO → PAO Jul 11, 20:40 UTCJul 11, 20:50 UTC10m
2026-07-11 N879HZ - Jul 11, 20:20 UTCJul 11, 20:35 UTC15m
2026-07-11 N879HZ PAO → PAO Jul 11, 18:15 UTCJul 11, 19:40 UTC1h 25m
2026-07-10 N879HZ PAO → PAO Jul 10, 22:25 UTCJul 10, 22:55 UTC30m
2026-07-10 N879HZ PAO → PAO Jul 10, 20:20 UTCJul 10, 22:20 UTC2h 0m
2026-07-09 N879HZ - Jul 9, 21:55 UTCJul 9, 22:00 UTC5m
2026-07-09 N879HZ SQL → SQL Jul 9, 21:35 UTCJul 9, 21:50 UTC15m
2026-07-09 N879HZ SQL → SQL Jul 9, 21:20 UTCJul 9, 21:30 UTC10m
2026-07-09 N879HZ SQL → SQL Jul 9, 21:05 UTCJul 9, 21:10 UTC5m
2026-07-09 N879HZ PAO → SQL Jul 9, 20:55 UTCJul 9, 21:00 UTC5m
2026-07-09 N879HZ PAO → PAO Jul 9, 18:35 UTCJul 9, 20:00 UTC1h 25m
2026-07-08 N879HZ PAO → PAO Jul 8, 19:40 UTCJul 8, 22:40 UTC3h 0m
2026-07-08 N879HZ PAO → PAO Jul 8, 01:45 UTCJul 8, 01:50 UTC5m
2026-07-08 N879HZ PAO → PAO Jul 8, 01:05 UTCJul 8, 01:35 UTC30m
2026-07-07 N879HZ PAO → PAO Jul 7, 20:00 UTCJul 7, 21:40 UTC1h 40m
2026-07-07 N879HZ PAO → PAO Jul 7, 17:55 UTCJul 7, 18:00 UTC5m
2026-07-07 N879HZ PAO → PAO Jul 7, 17:35 UTCJul 7, 17:50 UTC15m
2026-07-07 N879HZ PAO → PAO Jul 7, 17:25 UTCJul 7, 17:30 UTC5m
2026-07-06 N879HZ PAO → PAO Jul 6, 20:40 UTCJul 6, 21:10 UTC30m
2026-07-06 N879HZ PAO → PAO Jul 6, 20:05 UTCJul 6, 20:25 UTC20m
2026-07-06 N879HZ - Jul 6, 17:25 UTCJul 6, 18:35 UTC1h 10m

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 N879HZ page for operator, model, and routing details .

Mode-S AC188C frequently asked

What is Mode-S code AC188C?
AC188C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N879HZ.
Where is Mode-S AC188C registered?
Mode-S code AC188C 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 AC188C broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC188C, octal 53014214, decimal 11,278,476.
What flights does AC188C operate?
Mode-S AC188C has broadcast 2 distinct callsigns, including N879HZ, NGF7124.