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sensors Mode-S transponder

ADDA1B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N992AK · BEECH 99 Airliner · operated by LAKE CLARK AIR INC

Hex
ADDA1B
Octal
53355033
Decimal
11,393,563
Country
US
Tail
N992AK
Type
BE99
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
234
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S ADDA1B.

Country allocation

The ICAO 24-bit address ADDA1B 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
N992AK - 234 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N992AK - Jul 26, 20:50 UTCJul 26, 22:45 UTC1h 55m
2026-07-26 N992AK - Jul 26, 16:25 UTCJul 26, 18:25 UTC2h 0m
2026-07-26 N992AK - Jul 26, 01:45 UTCJul 26, 02:30 UTC45m
2026-07-25 N992AK - Jul 25, 23:40 UTCJul 26, 00:30 UTC50m
2026-07-25 N992AK - Jul 25, 21:20 UTCJul 25, 22:15 UTC55m
2026-07-25 N992AK - Jul 25, 19:05 UTCJul 25, 19:30 UTC25m
2026-07-25 N992AK - Jul 25, 17:40 UTCJul 25, 18:25 UTC45m
2026-07-25 N992AK - Jul 25, 15:40 UTCJul 25, 16:20 UTC40m
2026-07-25 N992AK - Jul 25, 00:45 UTCJul 25, 02:35 UTC1h 50m
2026-07-24 N992AK - Jul 24, 17:50 UTCJul 24, 19:35 UTC1h 45m
2026-07-23 N992AK - Jul 23, 22:50 UTCJul 23, 23:20 UTC30m
2026-07-23 N992AK - Jul 23, 21:30 UTCJul 23, 22:40 UTC1h 10m
2026-07-23 N992AK - Jul 23, 18:25 UTCJul 23, 19:00 UTC35m
2026-07-23 N992AK - Jul 23, 17:30 UTCJul 23, 18:10 UTC40m
2026-07-23 N992AK - Jul 23, 15:55 UTCJul 23, 16:30 UTC35m
2026-07-23 N992AK - Jul 23, 02:05 UTCJul 23, 03:20 UTC1h 15m
2026-07-23 N992AK - Jul 23, 01:20 UTCJul 23, 01:30 UTC10m
2026-07-22 N992AK - Jul 22, 20:25 UTCJul 22, 22:40 UTC2h 15m
2026-07-20 N992AK - Jul 20, 17:35 UTCJul 20, 18:45 UTC1h 10m
2026-07-20 N992AK - Jul 20, 15:25 UTCJul 20, 16:10 UTC45m
2026-07-19 N992AK - Jul 19, 01:40 UTCJul 19, 02:30 UTC50m
2026-07-18 N992AK - Jul 18, 23:45 UTCJul 19, 00:35 UTC50m
2026-07-18 N992AK - Jul 18, 21:30 UTCJul 18, 22:25 UTC55m
2026-07-18 N992AK - Jul 18, 20:00 UTCJul 18, 20:45 UTC45m
2026-07-18 N992AK ENA → MRI Jul 18, 02:25 UTCJul 18, 02:45 UTC20m
2026-07-18 N992AK - Jul 18, 01:54 UTCJul 18, 02:19 UTC25m
2026-07-18 N992AK - Jul 18, 00:19 UTCJul 18, 00:45 UTC25m
2026-07-17 N992AK - Jul 17, 21:50 UTCJul 17, 22:35 UTC45m
2026-07-17 N992AK - Jul 17, 15:44 UTCJul 17, 16:44 UTC1h 0m
2026-07-15 N992AK - Jul 15, 22:35 UTCJul 16, 00:15 UTC1h 40m
2026-07-15 N992AK - Jul 15, 16:30 UTCJul 15, 18:25 UTC1h 55m
2026-07-15 N992AK - Jul 15, 00:00 UTCJul 15, 01:45 UTC1h 45m
2026-07-14 N992AK - Jul 14, 16:00 UTCJul 14, 18:10 UTC2h 10m
2026-07-14 N992AK - Jul 14, 02:15 UTCJul 14, 02:45 UTC30m
2026-07-13 N992AK - Jul 13, 23:00 UTCJul 13, 23:30 UTC30m
2026-07-13 N992AK - Jul 13, 17:25 UTCJul 13, 18:15 UTC50m
2026-07-13 N992AK - Jul 13, 15:15 UTCJul 13, 15:50 UTC35m
2026-07-13 N992AK - Jul 13, 02:15 UTCJul 13, 03:01 UTC45m
2026-07-13 N992AK - Jul 13, 00:05 UTCJul 13, 01:10 UTC1h 5m
2026-07-12 N992AK - Jul 12, 21:35 UTCJul 12, 22:15 UTC40m
2026-07-12 N992AK - Jul 12, 18:50 UTCJul 12, 19:50 UTC1h 0m
2026-07-12 N992AK - Jul 12, 17:25 UTCJul 12, 18:15 UTC50m
2026-07-12 N992AK - Jul 12, 15:45 UTCJul 12, 16:40 UTC55m
2026-07-12 N992AK - Jul 12, 02:30 UTCJul 12, 03:15 UTC45m
2026-07-12 N992AK - Jul 12, 01:00 UTCJul 12, 01:25 UTC25m
2026-07-12 N992AK - Jul 12, 00:15 UTCJul 12, 00:45 UTC30m
2026-07-11 N992AK - Jul 11, 21:15 UTCJul 11, 21:25 UTC10m
2026-07-11 N992AK - Jul 11, 19:15 UTCJul 11, 20:55 UTC1h 40m
2026-07-11 N992AK - Jul 11, 17:35 UTCJul 11, 18:20 UTC45m
2026-07-11 N992AK - Jul 11, 15:10 UTCJul 11, 15:40 UTC30m

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 N992AK page for operator, model, and routing details .

Mode-S ADDA1B frequently asked

What is Mode-S code ADDA1B?
ADDA1B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N992AK.
Where is Mode-S ADDA1B registered?
Mode-S code ADDA1B 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 ADDA1B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADDA1B, octal 53355033, decimal 11,393,563.
What flights does ADDA1B operate?
Mode-S ADDA1B has broadcast 1 distinct callsign, including N992AK.