Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A27816

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N25836 · CESSNA 152 · operated by HILLSBORO AERO ACADEMY LLC

Hex
A27816
Octal
50474026
Decimal
10,647,574
Country
US
Tail
N25836
Type
C152
No current signal · last broadcast Jul 26, 04:05 UTC
Flights observed
224
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 04:05 UTC

Last known position

Most recent position reported by Mode-S A27816.

Country allocation

The ICAO 24-bit address A27816 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
N25836 - 224 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N25836 - Jul 26, 03:45 UTCJul 26, 04:05 UTC20m
2026-07-25 N25836 HIO → HIO Jul 25, 22:25 UTCJul 26, 00:15 UTC1h 50m
2026-07-25 N25836 - Jul 25, 20:15 UTCJul 25, 21:15 UTC1h 0m
2026-07-25 N25836 - Jul 25, 03:40 UTCJul 25, 05:40 UTC2h 0m
2026-07-25 N25836 - Jul 25, 00:15 UTCJul 25, 01:15 UTC1h 0m
2026-07-23 N25836 - Jul 23, 21:55 UTCJul 23, 23:45 UTC1h 50m
2026-07-23 N25836 HIO → HIO Jul 23, 21:40 UTCJul 23, 21:45 UTC5m
2026-07-22 N25836 - Jul 22, 14:50 UTCJul 22, 15:25 UTC35m
2026-07-21 N25836 - Jul 21, 23:05 UTCJul 22, 00:30 UTC1h 25m
2026-07-21 N25836 - Jul 21, 18:20 UTCJul 21, 19:15 UTC55m
2026-07-21 N25836 - Jul 21, 16:30 UTCJul 21, 17:10 UTC40m
2026-07-21 N25836 - Jul 21, 00:30 UTCJul 21, 02:15 UTC1h 45m
2026-07-20 N25836 - Jul 20, 22:10 UTCJul 20, 23:05 UTC55m
2026-07-19 N25836 - Jul 19, 00:35 UTCJul 19, 02:10 UTC1h 35m
2026-07-18 N25836 - Jul 18, 22:40 UTCJul 18, 23:45 UTC1h 5m
2026-07-18 N25836 - Jul 18, 21:15 UTCJul 18, 22:05 UTC50m
2026-07-18 N25836 - Jul 18, 19:35 UTCJul 18, 20:00 UTC25m
2026-07-18 N25836 - Jul 18, 17:10 UTCJul 18, 18:30 UTC1h 20m
2026-07-18 N25836 - Jul 18, 03:15 UTCJul 18, 04:35 UTC1h 20m
2026-07-18 N25836 - Jul 18, 01:15 UTCJul 18, 01:39 UTC25m
2026-07-17 N25836 HIO → OLM Jul 17, 23:20 UTCJul 18, 00:29 UTC1h 10m
2026-07-17 N25836 - Jul 17, 05:15 UTCJul 17, 07:14 UTC2h 0m
2026-07-16 N25836 - Jul 16, 01:50 UTCJul 16, 03:15 UTC1h 25m
2026-07-15 N25836 - Jul 15, 22:10 UTCJul 15, 23:45 UTC1h 35m
2026-07-14 N25836 - Jul 14, 20:05 UTCJul 14, 22:15 UTC2h 10m
2026-07-08 N25836 - Jul 8, 00:20 UTCJul 8, 02:25 UTC2h 5m
2026-07-07 N25836 - Jul 7, 21:00 UTCJul 7, 23:00 UTC2h 0m
2026-07-07 N25836 - Jul 7, 18:55 UTCJul 7, 20:05 UTC1h 10m
2026-07-07 N25836 - Jul 7, 01:25 UTCJul 7, 02:00 UTC35m
2026-07-06 N25836 - Jul 6, 20:20 UTCJul 6, 21:50 UTC1h 30m
2026-07-06 N25836 HIO → HIO Jul 6, 17:35 UTCJul 6, 19:10 UTC1h 35m
2026-07-06 N25836 - Jul 6, 15:05 UTCJul 6, 16:25 UTC1h 20m
2026-07-06 N25836 - Jul 6, 01:30 UTCJul 6, 04:05 UTC2h 35m
2026-07-05 N25836 HIO → PAE Jul 5, 21:45 UTCJul 5, 23:40 UTC1h 55m
2026-07-05 N25836 - Jul 5, 17:15 UTCJul 5, 19:10 UTC1h 55m
2026-07-04 N25836 HIO → HIO Jul 4, 20:15 UTCJul 4, 23:10 UTC2h 55m
2026-07-04 N25836 HIO → HIO Jul 4, 16:05 UTCJul 4, 16:30 UTC25m
2026-07-04 N25836 - Jul 4, 05:20 UTCJul 4, 07:30 UTC2h 10m
2026-07-04 N25836 - Jul 4, 02:50 UTCJul 4, 03:55 UTC1h 5m
2026-07-03 N25836 - Jul 3, 23:25 UTCJul 4, 01:55 UTC2h 30m
2026-07-03 N25836 SLE → HIO Jul 3, 01:20 UTCJul 3, 03:10 UTC1h 50m
2026-07-02 N25836 - Jul 2, 22:30 UTCJul 2, 23:55 UTC1h 25m
2026-07-02 N25836 - Jul 2, 19:50 UTCJul 2, 21:20 UTC1h 30m
2026-07-02 N25836 HIO → HIO Jul 2, 14:35 UTCJul 2, 15:55 UTC1h 20m
2026-07-02 N25836 HIO → HIO Jul 2, 03:45 UTCJul 2, 05:20 UTC1h 35m
2026-07-02 N25836 HIO → HIO Jul 2, 00:15 UTCJul 2, 02:10 UTC1h 55m
2026-07-01 N25836 HIO → HIO Jul 1, 18:05 UTCJul 1, 19:30 UTC1h 25m
2026-07-01 N25836 - Jul 1, 02:20 UTCJul 1, 04:05 UTC1h 45m
2026-06-30 N25836 - Jun 30, 23:05 UTCJul 1, 00:30 UTC1h 25m
2026-06-30 N25836 - Jun 30, 20:20 UTCJun 30, 21:30 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 N25836 page for operator, model, and routing details .

Mode-S A27816 frequently asked

What is Mode-S code A27816?
A27816 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N25836.
Where is Mode-S A27816 registered?
Mode-S code A27816 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 A27816 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 04:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27816, octal 50474026, decimal 10,647,574.
What flights does A27816 operate?
Mode-S A27816 has broadcast 1 distinct callsign, including N25836.