Apparatus

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sensors Mode-S transponder

AC99EC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9106Y · PIPER PA-28-140/150/160/180 · operated by REGION FLYERS LLC

Hex
AC99EC
Octal
53114754
Decimal
11,311,596
Country
US
Tail
N9106Y
Type
P28A
Broadcasting now · callsign N9106Y · 3,250 ft
Flights observed
103
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Current position

AC99EC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC99EC 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
N9106Y - 103 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N9106Y VPZ → VPZ Jul 13, 23:10 UTCJul 14, 00:00 UTC50m
2026-07-13 N9106Y - Jul 13, 21:25 UTCJul 13, 22:05 UTC40m
2026-07-13 N9106Y - Jul 13, 19:40 UTCJul 13, 20:30 UTC50m
2026-07-13 N9106Y - Jul 13, 14:55 UTCJul 13, 16:10 UTC1h 15m
2026-07-10 N9106Y - Jul 10, 17:35 UTCJul 10, 19:15 UTC1h 40m
2026-07-10 N9106Y - Jul 10, 16:05 UTCJul 10, 16:25 UTC20m
2026-07-10 N9106Y - Jul 10, 15:00 UTCJul 10, 15:15 UTC15m
2026-07-09 N9106Y VPZ → VPZ Jul 9, 20:15 UTCJul 9, 21:25 UTC1h 10m
2026-07-08 N9106Y - Jul 8, 20:45 UTCJul 8, 22:00 UTC1h 15m
2026-07-08 N9106Y VPZ → VPZ Jul 8, 17:00 UTCJul 8, 18:25 UTC1h 25m
2026-07-08 N9106Y - Jul 8, 14:05 UTCJul 8, 16:05 UTC2h 0m
2026-07-07 N9106Y - Jul 7, 21:45 UTCJul 7, 22:45 UTC1h 0m
2026-07-07 N9106Y VPZ → VPZ Jul 7, 16:55 UTCJul 7, 18:20 UTC1h 25m
2026-07-07 N9106Y - Jul 7, 14:35 UTCJul 7, 15:30 UTC55m
2026-07-07 N9106Y - Jul 7, 12:20 UTCJul 7, 13:35 UTC1h 15m
2026-07-06 N9106Y VPZ → VPZ Jul 6, 22:15 UTCJul 6, 23:25 UTC1h 10m
2026-07-06 N9106Y VPZ → VPZ Jul 6, 20:00 UTCJul 6, 21:20 UTC1h 20m
2026-07-06 N9106Y - Jul 6, 14:55 UTCJul 6, 16:10 UTC1h 15m
2026-07-03 N9106Y - Jul 3, 17:40 UTCJul 3, 18:50 UTC1h 10m
2026-07-02 N9106Y - Jul 2, 22:10 UTCJul 2, 23:25 UTC1h 15m
2026-07-02 N9106Y - Jul 2, 19:55 UTCJul 2, 20:55 UTC1h 0m
2026-07-02 N9106Y - Jul 2, 14:50 UTCJul 2, 15:25 UTC35m
2026-07-01 N9106Y - Jul 1, 18:10 UTCJul 1, 19:00 UTC50m
2026-07-01 N9106Y - Jul 1, 12:05 UTCJul 1, 12:55 UTC50m
2026-06-30 N9106Y - Jun 30, 20:05 UTCJun 30, 21:05 UTC1h 0m
2026-06-30 N9106Y - Jun 30, 18:05 UTCJun 30, 19:10 UTC1h 5m
2026-06-30 N9106Y - Jun 30, 16:40 UTCJun 30, 17:20 UTC40m
2026-06-30 N9106Y - Jun 30, 13:30 UTCJun 30, 14:15 UTC45m
2026-06-28 N9106Y VPZ → VPZ Jun 28, 19:04 UTCJun 28, 20:09 UTC1h 5m
2026-06-27 N9106Y VPZ → VPZ Jun 27, 18:20 UTCJun 27, 19:24 UTC1h 5m
2026-06-27 N9106Y VPZ → VPZ Jun 27, 16:10 UTCJun 27, 16:59 UTC50m
2026-06-27 N9106Y - Jun 27, 14:09 UTCJun 27, 15:10 UTC1h 0m
2026-06-26 N9106Y - Jun 26, 13:55 UTCJun 26, 15:20 UTC1h 25m
2026-06-13 N9106Y - Jun 13, 14:20 UTCJun 13, 15:05 UTC45m
2026-06-12 N9106Y - Jun 12, 23:15 UTCJun 12, 23:40 UTC25m
2026-06-12 N9106Y - Jun 12, 19:00 UTCJun 12, 20:15 UTC1h 15m
2026-06-12 N9106Y - Jun 12, 16:55 UTCJun 12, 17:45 UTC50m
2026-06-11 N9106Y VPZ → VPZ Jun 11, 17:55 UTCJun 11, 19:10 UTC1h 15m
2026-06-11 N9106Y VPZ → VPZ Jun 11, 15:10 UTCJun 11, 16:00 UTC50m
2026-06-09 N9106Y VPZ → VPZ Jun 9, 20:00 UTCJun 9, 20:35 UTC35m
2026-06-08 N9106Y VPZ → VPZ Jun 8, 18:00 UTCJun 8, 18:25 UTC25m
2026-06-08 N9106Y - Jun 8, 15:00 UTCJun 8, 16:10 UTC1h 10m
2026-06-07 N9106Y VPZ → VPZ Jun 7, 18:45 UTCJun 7, 19:20 UTC35m
2026-06-07 N9106Y - Jun 7, 16:35 UTCJun 7, 17:30 UTC55m
2026-06-07 N9106Y - Jun 7, 13:45 UTCJun 7, 15:05 UTC1h 20m
2026-06-06 N9106Y - Jun 6, 19:40 UTCJun 6, 20:19 UTC40m
2026-06-06 N9106Y - Jun 6, 14:59 UTCJun 6, 16:04 UTC1h 5m
2026-06-04 N9106Y - Jun 4, 21:10 UTCJun 4, 22:40 UTC1h 30m
2026-06-04 N9106Y - Jun 4, 18:55 UTCJun 4, 20:00 UTC1h 5m
2026-05-30 N9106Y - May 30, 18:50 UTCMay 30, 19:40 UTC50m

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 N9106Y page for operator, model, and routing details .

Mode-S AC99EC frequently asked

What is Mode-S code AC99EC?
AC99EC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9106Y.
Where is Mode-S AC99EC registered?
Mode-S code AC99EC 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 AC99EC broadcasting right now?
Yes. Mode-S AC99EC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC99EC, octal 53114754, decimal 11,311,596.
What flights does AC99EC operate?
Mode-S AC99EC has broadcast 1 distinct callsign, including N9106Y.