Apparatus

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sensors Mode-S transponder

AAAC25

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N787SP · CESSNA 172 Skyhawk · operated by SIERRA TANGO VENTURES LLC

Hex
AAAC25
Octal
52526045
Decimal
11,185,189
Country
US
Tail
N787SP
Type
C172
No current signal · last broadcast 7h ago
Flights observed
198
Distinct callsigns
1
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S AAAC25.

Country allocation

The ICAO 24-bit address AAAC25 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
N787SP - 198 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N787SP RHV → RHV Jul 18, 00:04 UTCJul 18, 01:15 UTC1h 10m
2026-07-17 N787SP - Jul 17, 03:50 UTCJul 17, 04:54 UTC1h 5m
2026-07-16 N787SP - Jul 16, 22:49 UTCJul 16, 23:44 UTC55m
2026-07-16 N787SP - Jul 16, 20:29 UTCJul 16, 20:45 UTC15m
2026-07-16 N787SP - Jul 16, 19:05 UTCJul 16, 19:50 UTC45m
2026-07-16 N787SP RHV → RHV Jul 16, 16:35 UTCJul 16, 18:10 UTC1h 35m
2026-07-15 N787SP RHV → RHV Jul 15, 21:50 UTCJul 15, 22:50 UTC1h 0m
2026-07-15 N787SP - Jul 15, 16:55 UTCJul 15, 17:55 UTC1h 0m
2026-07-09 N787SP RHV → RHV Jul 9, 23:05 UTCJul 9, 23:40 UTC35m
2026-07-09 N787SP RHV → RHV Jul 9, 20:30 UTCJul 9, 21:25 UTC55m
2026-07-09 N787SP RHV → RHV Jul 9, 18:20 UTCJul 9, 18:35 UTC15m
2026-07-09 N787SP RHV → RHV Jul 9, 17:25 UTCJul 9, 18:15 UTC50m
2026-07-08 N787SP - Jul 8, 22:20 UTCJul 8, 23:30 UTC1h 10m
2026-07-08 N787SP RHV → RHV Jul 8, 19:45 UTCJul 8, 20:45 UTC1h 0m
2026-07-07 N787SP RHV → RHV Jul 7, 19:45 UTCJul 7, 21:05 UTC1h 20m
2026-07-07 N787SP RHV → RHV Jul 7, 00:30 UTCJul 7, 01:50 UTC1h 20m
2026-07-06 N787SP RHV → RHV Jul 6, 19:55 UTCJul 6, 21:20 UTC1h 25m
2026-07-05 N787SP - Jul 5, 16:05 UTCJul 5, 16:40 UTC35m
2026-07-04 N787SP RHV → RHV Jul 4, 22:50 UTCJul 5, 00:20 UTC1h 30m
2026-07-04 N787SP - Jul 4, 03:30 UTCJul 4, 05:05 UTC1h 35m
2026-07-03 N787SP - Jul 3, 22:10 UTCJul 3, 22:55 UTC45m
2026-07-03 N787SP RHV → SAC Jul 3, 20:40 UTCJul 3, 22:05 UTC1h 25m
2026-07-03 N787SP RHV → RHV Jul 3, 18:15 UTCJul 3, 19:10 UTC55m
2026-07-02 N787SP RHV → RHV Jul 2, 21:15 UTCJul 2, 22:45 UTC1h 30m
2026-07-02 N787SP RHV → RHV Jul 2, 18:00 UTCJul 2, 18:15 UTC15m
2026-07-02 N787SP RHV → RHV Jul 2, 17:40 UTCJul 2, 17:55 UTC15m
2026-06-29 N787SP - Jun 29, 18:14 UTCJun 29, 19:15 UTC1h 0m
2026-06-28 N787SP RHV → RHV Jun 28, 19:49 UTCJun 28, 21:20 UTC1h 30m
2026-06-27 N787SP - Jun 27, 20:09 UTCJun 27, 22:04 UTC1h 55m
2026-06-26 N787SP - Jun 26, 17:40 UTCJun 26, 18:29 UTC50m
2026-06-26 N787SP RHV → RHV Jun 26, 05:10 UTCJun 26, 05:24 UTC15m
2026-06-26 N787SP RHV → RHV Jun 26, 04:50 UTCJun 26, 04:59 UTC10m
2026-06-25 N787SP RHV → RHV Jun 25, 23:19 UTCJun 25, 23:55 UTC35m
2026-06-25 N787SP RHV → RHV Jun 25, 22:45 UTCJun 25, 23:14 UTC30m
2026-06-25 N787SP RHV → RHV Jun 25, 20:39 UTCJun 25, 21:25 UTC45m
2026-06-25 N787SP RHV → RHV Jun 25, 18:59 UTCJun 25, 19:44 UTC45m
2026-06-25 N787SP - Jun 25, 16:05 UTCJun 25, 17:14 UTC1h 10m
2026-06-25 N787SP - Jun 25, 00:09 UTCJun 25, 01:24 UTC1h 15m
2026-06-22 N787SP - Jun 22, 20:14 UTCJun 22, 20:30 UTC15m
2026-06-18 N787SP - Jun 18, 20:15 UTCJun 18, 21:30 UTC1h 15m
2026-06-17 N787SP - Jun 17, 19:45 UTCJun 17, 20:05 UTC20m
2026-06-17 N787SP - Jun 17, 18:40 UTCJun 17, 19:10 UTC30m
2026-06-17 N787SP RHV → RHV Jun 17, 15:35 UTCJun 17, 16:55 UTC1h 20m
2026-06-17 N787SP RHV → RHV Jun 17, 01:25 UTCJun 17, 02:50 UTC1h 25m
2026-06-16 N787SP RHV → RHV Jun 16, 20:45 UTCJun 16, 21:55 UTC1h 10m
2026-06-16 N787SP RHV → RHV Jun 16, 16:30 UTCJun 16, 18:05 UTC1h 35m
2026-06-16 N787SP - Jun 16, 02:15 UTCJun 16, 02:34 UTC20m
2026-06-16 N787SP - Jun 16, 00:50 UTCJun 16, 01:30 UTC40m
2026-06-15 N787SP - Jun 15, 21:04 UTCJun 15, 21:25 UTC20m
2026-06-15 N787SP - Jun 15, 19:30 UTCJun 15, 20:30 UTC1h 0m

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 N787SP page for operator, model, and routing details .

Mode-S AAAC25 frequently asked

What is Mode-S code AAAC25?
AAAC25 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N787SP.
Where is Mode-S AAAC25 registered?
Mode-S code AAAC25 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 AAAC25 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAAC25, octal 52526045, decimal 11,185,189.
What flights does AAAC25 operate?
Mode-S AAAC25 has broadcast 1 distinct callsign, including N787SP.