Apparatus

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sensors Mode-S transponder

A25522

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N24998 · CESSNA 152 · operated by AIRPLANES AND HELICOPTERS OF OREGON LLC

Hex
A25522
Octal
50452442
Decimal
10,638,626
Country
US
Tail
N24998
Type
C152
No current signal · last broadcast 6h ago
Flights observed
97
Distinct callsigns
1
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A25522.

Country allocation

The ICAO 24-bit address A25522 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
N24998 - 97 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 N24998 OAK → OAK May 29, 23:20 UTCMay 29, 23:35 UTC15m
2026-05-29 N24998 - May 29, 03:15 UTCMay 29, 04:10 UTC55m
2026-05-28 N24998 OAK → OAK May 28, 20:00 UTCMay 28, 21:05 UTC1h 5m
2026-05-28 N24998 - May 28, 16:50 UTCMay 28, 18:05 UTC1h 15m
2026-05-28 N24998 OAK → OAK May 28, 01:00 UTCMay 28, 02:10 UTC1h 10m
2026-05-27 N24998 CCR → OAK May 27, 23:10 UTCMay 27, 23:30 UTC20m
2026-05-27 N24998 OAK → CCR May 27, 21:55 UTCMay 27, 22:20 UTC25m
2026-05-27 N24998 - May 27, 19:35 UTCMay 27, 21:00 UTC1h 25m
2026-05-27 N24998 - May 27, 00:25 UTCMay 27, 00:55 UTC30m
2026-05-25 N24998 OAK → OAK May 25, 23:10 UTCMay 25, 23:35 UTC25m
2026-05-25 N24998 - May 25, 18:25 UTCMay 25, 19:15 UTC50m
2026-05-24 N24998 - May 24, 23:05 UTCMay 24, 23:46 UTC41m
2026-05-24 N24998 OAK → OAK May 24, 16:50 UTCMay 24, 17:55 UTC1h 5m
2026-05-24 N24998 - May 24, 00:30 UTCMay 24, 01:55 UTC1h 25m
2026-05-23 N24998 - May 23, 21:35 UTCMay 23, 22:40 UTC1h 5m
2026-05-23 N24998 OAK → OAK May 23, 18:00 UTCMay 23, 19:05 UTC1h 5m
2026-05-22 N24998 - May 22, 21:50 UTCMay 22, 22:55 UTC1h 5m
2026-05-22 N24998 OAK → OAK May 22, 18:55 UTCMay 22, 20:15 UTC1h 20m
2026-05-22 N24998 OAK → OAK May 22, 03:05 UTCMay 22, 03:15 UTC10m
2026-05-22 N24998 - May 22, 01:40 UTCMay 22, 02:50 UTC1h 10m
2026-05-21 N24998 OAK → OAK May 21, 22:45 UTCMay 21, 23:45 UTC1h 0m
2026-05-21 N24998 - May 21, 19:10 UTCMay 21, 20:25 UTC1h 15m
2026-05-20 N24998 - May 20, 22:00 UTCMay 20, 23:35 UTC1h 35m
2026-05-20 N24998 - May 20, 18:40 UTCMay 20, 20:20 UTC1h 40m
2026-05-19 N24998 OAK → OAK May 19, 23:00 UTCMay 20, 00:05 UTC1h 5m
2026-05-19 N24998 - May 19, 17:40 UTCMay 19, 19:35 UTC1h 55m
2026-05-19 N24998 OAK → OAK May 19, 00:10 UTCMay 19, 02:00 UTC1h 50m
2026-05-18 N24998 - May 18, 02:00 UTCMay 18, 02:40 UTC40m
2026-05-17 N24998 OAK → OAK May 17, 23:05 UTCMay 18, 00:15 UTC1h 10m
2026-05-17 N24998 OAK → OAK May 17, 19:50 UTCMay 17, 21:01 UTC1h 10m
2026-05-16 N24998 OAK → OAK May 16, 22:50 UTCMay 17, 00:05 UTC1h 15m
2026-05-16 N24998 OAK → OAK May 16, 19:40 UTCMay 16, 20:20 UTC40m
2026-05-16 N24998 - May 16, 02:20 UTCMay 16, 03:00 UTC40m
2026-05-15 N24998 - May 15, 21:55 UTCMay 15, 22:40 UTC45m
2026-05-15 N24998 - May 15, 18:55 UTCMay 15, 20:20 UTC1h 25m
2026-05-15 N24998 - May 15, 00:40 UTCMay 15, 02:30 UTC1h 50m
2026-05-14 N24998 OAK → OAK May 14, 21:20 UTCMay 14, 21:55 UTC35m
2026-05-14 N24998 OAK → OAK May 14, 18:15 UTCMay 14, 19:00 UTC45m
2026-05-14 N24998 - May 14, 04:25 UTCMay 14, 04:51 UTC25m
2026-05-14 N24998 OAK → OAK May 14, 02:45 UTCMay 14, 04:20 UTC1h 35m
2026-05-13 N24998 OAK → OAK May 13, 21:45 UTCMay 13, 23:15 UTC1h 30m
2026-05-13 N24998 - May 13, 19:20 UTCMay 13, 19:45 UTC25m
2026-05-13 N24998 - May 13, 18:50 UTCMay 13, 19:15 UTC25m
2026-05-10 N24998 - May 10, 19:09 UTCMay 10, 19:19 UTC10m
2026-05-09 N24998 OAK → OAK May 9, 16:40 UTCMay 9, 17:35 UTC55m
2026-05-08 N24998 OAK → OAK May 8, 00:44 UTCMay 8, 01:45 UTC1h 0m
2026-05-07 N24998 - May 7, 21:35 UTCMay 7, 22:59 UTC1h 24m
2026-05-07 N24998 OAK → OAK May 7, 04:05 UTCMay 7, 04:55 UTC50m
2026-05-07 N24998 OAK → OAK May 7, 03:50 UTCMay 7, 04:00 UTC10m
2026-05-07 N24998 OAK → OAK May 7, 00:55 UTCMay 7, 01:55 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 N24998 page for operator, model, and routing details .

Mode-S A25522 frequently asked

What is Mode-S code A25522?
A25522 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N24998.
Where is Mode-S A25522 registered?
Mode-S code A25522 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 A25522 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A25522, octal 50452442, decimal 10,638,626.
What flights does A25522 operate?
Mode-S A25522 has broadcast 1 distinct callsign, including N24998.