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sensors Mode-S transponder

ACFB6E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9356H · CESSNA 172 Skyhawk · operated by QUAD CITIES AERO LLC

Hex
ACFB6E
Octal
53175556
Decimal
11,336,558
Country
US
Tail
N9356H
Type
C172
No current signal · last broadcast 5d ago
Flights observed
177
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S ACFB6E.

Country allocation

The ICAO 24-bit address ACFB6E 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
N9356H - 177 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N9356H - Jul 24, 23:55 UTCJul 25, 00:40 UTC45m
2026-07-24 N9356H - Jul 24, 21:55 UTCJul 24, 22:30 UTC35m
2026-07-24 N9356H - Jul 24, 18:40 UTCJul 24, 18:50 UTC10m
2026-07-24 N9356H - Jul 24, 13:45 UTCJul 24, 14:00 UTC15m
2026-07-23 N9356H - Jul 23, 23:35 UTCJul 24, 00:45 UTC1h 10m
2026-07-23 N9356H - Jul 23, 20:50 UTCJul 23, 22:20 UTC1h 30m
2026-07-23 N9356H - Jul 23, 15:35 UTCJul 23, 16:50 UTC1h 15m
2026-07-23 N9356H - Jul 23, 13:25 UTCJul 23, 14:20 UTC55m
2026-07-23 N9356H - Jul 23, 11:30 UTCJul 23, 12:25 UTC55m
2026-07-22 N9356H - Jul 22, 20:55 UTCJul 22, 23:55 UTC3h 0m
2026-07-22 N9356H - Jul 22, 17:35 UTCJul 22, 19:20 UTC1h 45m
2026-07-22 N9356H - Jul 22, 15:35 UTCJul 22, 16:20 UTC45m
2026-07-22 N9356H - Jul 22, 12:10 UTCJul 22, 13:10 UTC1h 0m
2026-07-21 N9356H - Jul 21, 17:40 UTCJul 21, 18:25 UTC45m
2026-07-21 N9356H - Jul 21, 15:15 UTCJul 21, 16:30 UTC1h 15m
2026-07-18 N9356H - Jul 18, 18:15 UTCJul 18, 18:45 UTC30m
2026-07-18 N9356H - Jul 18, 16:40 UTCJul 18, 17:15 UTC35m
2026-07-18 N9356H - Jul 18, 14:25 UTCJul 18, 15:45 UTC1h 20m
2026-07-18 N9356H - Jul 18, 12:20 UTCJul 18, 12:55 UTC35m
2026-07-17 N9356H - Jul 17, 16:55 UTCJul 17, 17:35 UTC40m
2026-07-17 N9356H - Jul 17, 14:39 UTCJul 17, 15:44 UTC1h 5m
2026-07-17 N9356H - Jul 17, 12:25 UTCJul 17, 13:40 UTC1h 15m
2026-07-16 N9356H - Jul 16, 02:20 UTCJul 16, 04:05 UTC1h 45m
2026-07-15 N9356H - Jul 15, 23:35 UTCJul 16, 00:30 UTC55m
2026-07-15 N9356H - Jul 15, 21:30 UTCJul 15, 22:20 UTC50m
2026-07-15 N9356H - Jul 15, 15:30 UTCJul 15, 16:20 UTC50m
2026-07-15 N9356H - Jul 15, 13:40 UTCJul 15, 14:05 UTC25m
2026-07-14 N9356H - Jul 14, 19:40 UTCJul 14, 20:35 UTC55m
2026-07-14 N9356H - Jul 14, 12:35 UTCJul 14, 13:00 UTC25m
2026-07-13 N9356H - Jul 13, 23:20 UTCJul 14, 00:25 UTC1h 5m
2026-07-13 N9356H - Jul 13, 13:35 UTCJul 13, 14:15 UTC40m
2026-07-11 N9356H - Jul 11, 20:10 UTCJul 11, 21:15 UTC1h 5m
2026-07-11 N9356H - Jul 11, 17:40 UTCJul 11, 18:20 UTC40m
2026-07-11 N9356H - Jul 11, 14:35 UTCJul 11, 15:45 UTC1h 10m
2026-07-09 N9356H - Jul 9, 23:10 UTCJul 10, 00:05 UTC55m
2026-07-08 N9356H - Jul 8, 15:30 UTCJul 8, 18:20 UTC2h 50m
2026-07-08 N9356H - Jul 8, 13:35 UTCJul 8, 14:40 UTC1h 5m
2026-07-08 N9356H - Jul 8, 11:50 UTCJul 8, 12:40 UTC50m
2026-07-07 N9356H - Jul 7, 18:20 UTCJul 7, 19:30 UTC1h 10m
2026-07-07 N9356H - Jul 7, 13:35 UTCJul 7, 14:15 UTC40m
2026-07-06 N9356H - Jul 6, 16:05 UTCJul 6, 16:25 UTC20m
2026-07-06 N9356H - Jul 6, 11:30 UTCJul 6, 12:35 UTC1h 5m
2026-07-02 N9356H - Jul 2, 18:50 UTCJul 2, 20:10 UTC1h 20m
2026-07-02 N9356H - Jul 2, 14:25 UTCJul 2, 15:00 UTC35m
2026-07-01 N9356H - Jul 1, 18:45 UTCJul 1, 18:55 UTC10m
2026-07-01 N9356H - Jul 1, 14:35 UTCJul 1, 15:35 UTC1h 0m
2026-07-01 N9356H - Jul 1, 12:15 UTCJul 1, 13:05 UTC50m
2026-07-01 N9356H - Jul 1, 01:25 UTCJul 1, 02:30 UTC1h 5m
2026-06-30 N9356H - Jun 30, 21:35 UTCJun 30, 23:05 UTC1h 30m
2026-06-29 N9356H - Jun 29, 17:45 UTCJun 29, 18:55 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 N9356H page for operator, model, and routing details .

Mode-S ACFB6E frequently asked

What is Mode-S code ACFB6E?
ACFB6E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9356H.
Where is Mode-S ACFB6E registered?
Mode-S code ACFB6E 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 ACFB6E broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACFB6E, octal 53175556, decimal 11,336,558.
What flights does ACFB6E operate?
Mode-S ACFB6E has broadcast 1 distinct callsign, including N9356H.