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sensors Mode-S transponder

ADBDC1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N985AK · BOEING 737 MAX 9 · operated by ALASKA AIRLINES INC

Hex
ADBDC1
Octal
53336701
Decimal
11,386,305
Country
US
Tail
N985AK
Type
B39M
Broadcasting now · callsign ASA371 · 37,000 ft
Flights observed
342
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Current position

ADBDC1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ADBDC1 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 20 distinct

Callsign Airline Flights Last seen
ASA670 Alaska Airlines 7 2026-07-18
ASA9716 - 5 2026-06-25
ASA507 Alaska Airlines 5 2026-07-08
ASA50 - 5 2026-07-16
ASA326 - 5 2026-07-11
ASA205 Alaska Airlines 5 2026-05-05
ASA9720 - 4 2026-06-28
ASA713 - 4 2026-06-29
ASA609 - 4 2026-07-14
ASA572 Alaska Airlines 4 2026-04-14
ASA334 - 4 2026-06-28
ASA313 Alaska Airlines 4 2026-07-24
ASA252 Alaska Airlines 4 2026-05-05
ASA9719 - 3 2026-06-27
ASA9718 - 3 2026-06-24
ASA9650 - 3 2026-06-23
ASA9649 - 3 2026-06-16
ASA9648 - 3 2026-06-28
ASA784 - 3 2026-07-07
ASA621 - 3 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA305 MIA → SEA Jul 26, 15:40 UTCJul 26, 20:50 UTC5h 10m
2026-07-25 ASA517 FLL → SEA Jul 25, 22:55 UTCJul 26, 04:40 UTC5h 45m
2026-07-25 ASA516 SEA → FLL Jul 25, 15:50 UTCJul 25, 21:10 UTC5h 20m
2026-07-25 ASA461 ANC → FAI Jul 25, 12:30 UTCJul 25, 13:40 UTC1h 10m
2026-07-25 ASA458 PDX → MCO Jul 25, 04:05 UTCJul 25, 04:55 UTC50m
2026-07-25 ASA458 PDX → MCO Jul 25, 04:01 UTCJul 25, 05:08 UTC1h 7m
2026-07-24 ASA313 SEA → DTW Jul 24, 21:45 UTCJul 25, 02:20 UTC4h 35m
2026-07-24 ASA313 SEA → DTW Jul 24, 16:45 UTCJul 24, 20:15 UTC3h 30m
2026-07-24 ASA387 MSP → SEA Jul 24, 11:20 UTCJul 24, 14:40 UTC3h 20m
2026-07-24 ASA386 SEA → MSP Jul 24, 02:15 UTCJul 24, 04:55 UTC2h 40m
2026-07-23 ASA402 - Jul 23, 21:30 UTCJul 24, 00:15 UTC2h 45m
2026-07-23 ASA402 CHS → SEA Jul 23, 21:27 UTCJul 24, 00:09 UTC2h 42m
2026-07-23 ASA79 SJC → PVR Jul 23, 16:30 UTCJul 23, 20:05 UTC3h 35m
2026-07-22 ASA1574 DFW → SEA Jul 22, 21:55 UTCJul 23, 01:30 UTC3h 35m
2026-07-22 ASA545 - Jul 22, 17:00 UTCJul 22, 19:40 UTC2h 40m
2026-07-22 ASA1470 ORD → SAN Jul 22, 11:35 UTCJul 22, 15:10 UTC3h 35m
2026-07-22 ASA649 LAS → PDX Jul 22, 01:35 UTCJul 22, 02:51 UTC1h 16m
2026-07-22 ASA649 LAS → PDX Jul 22, 01:05 UTCJul 22, 01:15 UTC10m
2026-07-21 ASA1386 PDX → BUR Jul 21, 22:05 UTCJul 22, 00:00 UTC1h 55m
2026-07-21 ASA1567 ANC → PDX Jul 21, 17:20 UTCJul 21, 20:35 UTC3h 15m
2026-07-21 ASA46 - Jul 21, 04:35 UTCJul 21, 05:25 UTC50m
2026-07-21 ASA46 BET → ANC Jul 21, 04:26 UTCJul 21, 05:20 UTC54m
2026-07-21 ASA45 ANC → BET Jul 21, 02:30 UTCJul 21, 03:10 UTC40m
2026-07-20 ASA1560 SEA → ANC Jul 20, 05:40 UTCJul 20, 08:40 UTC3h 0m
2026-07-19 ASA787 LAS → SEA Jul 19, 22:30 UTCJul 20, 03:35 UTC5h 5m
2026-07-19 ASA787 LAS → SEA Jul 19, 16:00 UTCJul 19, 20:25 UTC4h 25m
2026-07-19 ASA90 FAI → ANC Jul 19, 05:35 UTCJul 19, 06:25 UTC50m
2026-07-19 ASA90 FAI → ANC Jul 19, 01:15 UTCJul 19, 01:25 UTC10m
2026-07-18 ASA626 - Jul 18, 18:40 UTCJul 19, 00:00 UTC5h 20m
2026-07-18 ASA670 PDX → LAS Jul 18, 11:20 UTCJul 18, 16:25 UTC5h 5m
2026-07-18 ASA677 LAS → SEA Jul 18, 05:05 UTCJul 18, 09:35 UTC4h 30m
2026-07-17 ASA1506 BOS → SEA Jul 17, 20:25 UTCJul 18, 02:05 UTC5h 40m
2026-07-17 ASA1505 SEA → BNH Jul 17, 13:15 UTCJul 17, 17:55 UTC4h 40m
2026-07-17 ASA329 - Jul 17, 03:59 UTCJul 17, 07:40 UTC3h 40m
2026-07-17 ASA410 - Jul 17, 01:59 UTCJul 17, 02:15 UTC15m
2026-07-16 ASA410 SEA → ORD Jul 16, 22:35 UTCJul 17, 02:15 UTC3h 40m
2026-07-16 ASA410 SEA → ORD Jul 16, 22:28 UTCJul 17, 01:42 UTC3h 14m
2026-07-16 ASA47 BFI → SEA Jul 16, 18:50 UTCJul 16, 18:55 UTC5m
2026-07-16 ASA47 ANC → SEA Jul 16, 15:05 UTCJul 16, 18:55 UTC3h 50m
2026-07-16 ASA47 ANC → SEA Jul 16, 15:01 UTCJul 16, 18:33 UTC3h 32m
2026-07-16 ASA50 - Jul 16, 12:05 UTCJul 16, 13:00 UTC55m
2026-07-16 ASA50 - Jul 16, 07:40 UTCJul 16, 07:55 UTC15m
2026-07-16 ASA50 HNL → ANC Jul 16, 07:36 UTCJul 16, 12:58 UTC5h 22m
2026-07-16 ASA49 - Jul 16, 05:45 UTCJul 16, 06:05 UTC20m
2026-07-16 ASA49 - Jul 16, 00:20 UTCJul 16, 01:10 UTC50m
2026-07-15 ASA225 SEA → ANC Jul 15, 01:00 UTCJul 15, 04:00 UTC3h 0m
2026-07-14 ASA1305 - Jul 14, 20:55 UTCJul 14, 22:50 UTC1h 54m
2026-07-14 ASA1602 SFO → LAX Jul 14, 18:12 UTCJul 14, 19:00 UTC48m
2026-07-14 ASA1602 - Jul 14, 18:15 UTCJul 14, 19:10 UTC55m
2026-07-14 ASA526 PDX → SFO Jul 14, 15:35 UTCJul 14, 17:05 UTC1h 30m

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 N985AK page for operator, model, and routing details .

Mode-S ADBDC1 frequently asked

What is Mode-S code ADBDC1?
ADBDC1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N985AK.
Where is Mode-S ADBDC1 registered?
Mode-S code ADBDC1 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 ADBDC1 broadcasting right now?
Yes. Mode-S ADBDC1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADBDC1, octal 53336701, decimal 11,386,305.
What flights does ADBDC1 operate?
Mode-S ADBDC1 has broadcast 20 distinct callsigns, including ASA670, ASA9716, ASA507, ASA50, ASA326.