Apparatus

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sensors Mode-S transponder

AD036B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N938AK · BOEING 737 MAX 9 · operated by BANK OF UTAH TRUSTEE

Hex
AD036B
Octal
53201553
Decimal
11,338,603
Country
US
Tail
N938AK
Type
B39M
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
419
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S AD036B.

Country allocation

The ICAO 24-bit address AD036B 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
ASA1470 Alaska Airlines 7 2026-06-10
ASA272 Alaska Airlines 6 2026-04-29
ASA94 Alaska Airlines 5 2026-06-28
ASA67 Alaska Airlines 5 2026-06-14
ASA40 Alaska Airlines 5 2026-04-29
ASA1332 - 5 2026-07-12
ASA95 Alaska Airlines 4 2026-05-20
ASA646 Alaska Airlines 4 2026-04-24
ASA625 Alaska Airlines 4 2026-05-30
ASA561 Alaska Airlines 4 2026-05-01
ASA405 Alaska Airlines 4 2026-07-02
ASA23 Alaska Airlines 4 2026-04-18
ASA222 - 4 2026-06-19
ASA656 - 3 2026-07-14
ASA605 Alaska Airlines 3 2026-06-08
ASA595 Alaska Airlines 3 2026-06-07
ASA517 - 3 2026-06-15
ASA421 - 3 2026-07-12
ASA397 Alaska Airlines 3 2026-04-18
ASA396 Alaska Airlines 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA1825 PDX → ONT Jul 26, 15:45 UTCJul 26, 21:50 UTC6h 5m
2026-07-26 ASA1543 LAX → SEA Jul 26, 08:15 UTCJul 26, 09:10 UTC55m
2026-07-26 ASA1543 LAX → SEA Jul 26, 08:15 UTCJul 26, 13:47 UTC5h 32m
2026-07-26 ASA667 SEA → RDM Jul 26, 03:55 UTCJul 26, 06:55 UTC3h 1m
2026-07-25 ASA391 SAN → PDX Jul 25, 21:05 UTCJul 26, 02:00 UTC4h 55m
2026-07-25 ASA391 SAN → PDX Jul 25, 21:03 UTCJul 26, 01:42 UTC4h 39m
2026-07-25 ASA385 BOS → SEA Jul 25, 15:15 UTCJul 25, 19:05 UTC3h 50m
2026-07-24 ASA641 TUS → SEA Jul 24, 21:50 UTCJul 25, 00:25 UTC2h 35m
2026-07-24 ASA648 SEA → TUS Jul 24, 17:45 UTCJul 24, 20:25 UTC2h 40m
2026-07-24 ASA519 FLL → SEA Jul 24, 12:15 UTCJul 24, 16:05 UTC3h 50m
2026-07-24 ASA520 SEA → FLL Jul 24, 06:20 UTCJul 24, 09:50 UTC3h 30m
2026-07-24 ASA544 PDX → SFO Jul 24, 01:45 UTCJul 24, 04:30 UTC2h 45m
2026-07-23 ASA1438 SAN → SJD Jul 23, 22:20 UTCJul 23, 23:20 UTC1h 0m
2026-07-23 ASA1437 SFO → LAX Jul 23, 20:10 UTCJul 23, 21:05 UTC55m
2026-07-23 ASA1541 MSP → ANC Jul 23, 12:55 UTCJul 23, 18:40 UTC5h 45m
2026-07-23 ASA1540 SEA → ANC Jul 23, 06:00 UTCJul 23, 10:30 UTC4h 30m
2026-07-23 ASA352 ANC → SEA Jul 23, 02:15 UTCJul 23, 03:15 UTC1h 0m
2026-07-22 ASA351 LAX → SEA Jul 22, 23:45 UTCJul 23, 00:35 UTC50m
2026-07-22 ASA1825 PDX → ONT Jul 22, 15:45 UTCJul 22, 21:55 UTC6h 10m
2026-07-22 ASA1825 PDX → ONT Jul 22, 15:41 UTCJul 22, 21:38 UTC5h 57m
2026-07-22 ASA1543 - Jul 22, 10:20 UTCJul 22, 12:30 UTC2h 10m
2026-07-21 ASA86 - Jul 21, 23:55 UTCJul 22, 03:40 UTC3h 45m
2026-07-21 ASA44 - Jul 21, 21:35 UTCJul 21, 22:30 UTC55m
2026-07-21 ASA43 - Jul 21, 19:10 UTCJul 21, 20:00 UTC50m
2026-07-21 ASA767 PDX → SFO Jul 21, 01:50 UTCJul 21, 04:50 UTC3h 0m
2026-07-20 ASA1464 SEA → LAX Jul 20, 22:20 UTCJul 20, 23:45 UTC1h 25m
2026-07-20 ASA1328 SEA → SFO Jul 20, 19:00 UTCJul 20, 20:45 UTC1h 45m
2026-07-20 ASA377 ATL → SEA Jul 20, 11:20 UTCJul 20, 15:50 UTC4h 30m
2026-07-19 ASA727 SEA → ATL Jul 19, 23:35 UTCJul 20, 03:50 UTC4h 15m
2026-07-19 ASA676 LAS → SEA Jul 19, 19:46 UTCJul 19, 21:27 UTC1h 41m
2026-07-19 ASA676 - Jul 19, 19:30 UTCJul 19, 20:45 UTC1h 15m
2026-07-19 ASA1628 PDX → LAS Jul 19, 16:10 UTCJul 19, 18:00 UTC1h 50m
2026-07-19 ASA609 LAX → PDX Jul 19, 10:00 UTCJul 19, 13:10 UTC3h 10m
2026-07-19 ASA667 SEA → ANC Jul 19, 05:25 UTCJul 19, 08:35 UTC3h 10m
2026-07-18 ASA391 YYZ → SEA Jul 18, 21:55 UTCJul 19, 02:35 UTC4h 40m
2026-07-18 ASA385 SEA → YYZ Jul 18, 16:15 UTCJul 18, 20:15 UTC4h 0m
2026-07-18 ASA98 ANC → SEA Jul 18, 10:15 UTCJul 18, 13:05 UTC2h 50m
2026-07-18 ASA1899 LAX → ANC Jul 18, 02:45 UTCJul 18, 07:30 UTC4h 46m
2026-07-17 ASA534 - Jul 17, 23:30 UTCJul 18, 01:00 UTC1h 30m
2026-07-17 ASA437 - Jul 17, 18:29 UTCJul 17, 19:49 UTC1h 20m
2026-07-17 ASA437 LAX → PVR Jul 17, 18:37 UTCJul 17, 21:02 UTC2h 25m
2026-07-17 ASA496 SEA → LAX Jul 17, 04:20 UTCJul 17, 06:40 UTC2h 20m
2026-07-17 ASA408 - Jul 17, 00:35 UTCJul 17, 02:34 UTC2h 0m
2026-07-16 ASA487 - Jul 16, 20:39 UTCJul 16, 22:59 UTC2h 20m
2026-07-16 ASA451 MSY → SEA Jul 16, 12:25 UTCJul 16, 16:55 UTC4h 30m
2026-07-16 ASA490 SEA → MSY Jul 16, 06:25 UTCJul 16, 10:40 UTC4h 15m
2026-07-15 ASA304 BOS → SEA Jul 15, 22:45 UTCJul 16, 04:30 UTC5h 45m
2026-07-15 ASA306 SEA → BOS Jul 15, 16:05 UTCJul 15, 20:50 UTC4h 45m
2026-07-15 ASA501 - Jul 15, 02:10 UTCJul 15, 05:10 UTC3h 0m
2026-07-15 ASA501 MCI → SEA Jul 15, 02:06 UTCJul 15, 05:01 UTC2h 55m

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 N938AK page for operator, model, and routing details .

Mode-S AD036B frequently asked

What is Mode-S code AD036B?
AD036B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N938AK.
Where is Mode-S AD036B registered?
Mode-S code AD036B 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 AD036B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD036B, octal 53201553, decimal 11,338,603.
What flights does AD036B operate?
Mode-S AD036B has broadcast 20 distinct callsigns, including ASA1470, ASA272, ASA94, ASA67, ASA40.