sensors Mode-S transponder

ADB29C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N982AK · BOEING 737 MAX 9 · operated by ALASKA AIRLINES INC

Hex
ADB29C
Octal
53331234
Decimal
11,383,452
Country
US
Tail
N982AK
Type
B39M
No current signal · last broadcast 13h ago
Flights observed
10
Distinct callsigns
5
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S ADB29C.

Country allocation

The ICAO 24-bit address ADB29C 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 5 distinct

Callsign Airline Flights Last seen
ASA282 - 4 2026-04-13
ASA436 - 3 2026-04-14
ASA597 Alaska Airlines 1 2026-04-13
ASA433 - 1 2026-04-12
ASA233 - 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 ASA436 - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 ASA436 - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 ASA436 - Apr 14, 05:15 UTCApr 14, 07:10 UTC1h 55m
2026-04-13 ASA233 - Apr 13, 14:40 UTCApr 13, 15:20 UTC40m
2026-04-13 ASA282 - Apr 13, 11:55 UTCApr 13, 12:15 UTC20m
2026-04-13 ASA282 - Apr 13, 11:25 UTCApr 13, 12:15 UTC50m
2026-04-13 ASA282 - Apr 13, 07:18 UTCApr 13, 12:17 UTC4h 59m
2026-04-13 ASA282 - Apr 13, 07:18 UTCApr 13, 12:18 UTC5h 0m
2026-04-13 ASA597 ORD → SFO Apr 13, 02:25 UTCApr 13, 02:50 UTC25m
2026-04-12 ASA433 - Apr 12, 17:15 UTCApr 12, 18:25 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 N982AK page for operator, model, and routing details .

Mode-S ADB29C frequently asked

What is Mode-S code ADB29C?
ADB29C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N982AK.
Where is Mode-S ADB29C registered?
Mode-S code ADB29C 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 ADB29C broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADB29C, octal 53331234, decimal 11,383,452.
What flights does ADB29C operate?
Mode-S ADB29C has broadcast 5 distinct callsigns, including ASA282, ASA436, ASA597, ASA433, ASA233.