Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD3C1F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N952AK · BOEING 737 MAX 9 · operated by BANK OF UTAH TRUSTEE

Hex
AD3C1F
Octal
53236037
Decimal
11,353,119
Country
US
Tail
N952AK
Type
B39M
No current signal · last broadcast 2h ago
Flights observed
371
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AD3C1F.

Country allocation

The ICAO 24-bit address AD3C1F 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
ASA708 Alaska Airlines 7 2026-05-15
ASA707 Alaska Airlines 6 2026-05-15
ASA626 - 5 2026-06-22
ASA561 Alaska Airlines 5 2026-05-28
ASA560 Alaska Airlines 5 2026-06-02
ASA507 Alaska Airlines 5 2026-07-02
ASA763 Alaska Airlines 4 2026-05-09
ASA557 Alaska Airlines 4 2026-06-16
ASA441 Alaska Airlines 4 2026-04-14
ASA440 Alaska Airlines 4 2026-04-15
ASA267 Alaska Airlines 4 2026-05-22
ASA266 - 4 2026-07-13
ASA246 - 4 2026-06-19
ASA204 Alaska Airlines 4 2026-06-11
ASA18 - 4 2026-07-08
ASA90 Alaska Airlines 3 2026-06-23
ASA764 Alaska Airlines 3 2026-05-09
ASA706 - 3 2026-07-05
ASA655 - 3 2026-07-07
ASA576 Alaska Airlines 3 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASA767 SEA → ANC Jul 14, 01:30 UTCJul 14, 04:55 UTC3h 25m
2026-07-13 ASA363 - Jul 13, 20:30 UTCJul 13, 23:30 UTC3h 0m
2026-07-13 ASA432 DEN → ANC Jul 13, 13:50 UTCJul 13, 19:10 UTC5h 20m
2026-07-13 ASA1619 - Jul 13, 03:25 UTCJul 13, 05:25 UTC2h 0m
2026-07-13 ASA266 - Jul 13, 01:10 UTCJul 13, 01:55 UTC45m
2026-07-12 ASA266 - Jul 12, 20:55 UTCJul 12, 21:00 UTC5m
2026-07-12 ASA693 - Jul 12, 18:45 UTCJul 12, 18:50 UTC5m
2026-07-12 ASA693 - Jul 12, 14:10 UTCJul 12, 14:40 UTC30m
2026-07-12 ASA619 SEA → SFO Jul 12, 02:35 UTCJul 12, 04:35 UTC2h 0m
2026-07-11 ASA567 - Jul 11, 21:50 UTCJul 11, 23:50 UTC2h 0m
2026-07-11 ASA567 ONT → SEA Jul 11, 21:50 UTCJul 11, 23:40 UTC1h 50m
2026-07-11 ASA565 SEA → ONT Jul 11, 18:21 UTCJul 11, 20:31 UTC2h 10m
2026-07-11 ASA565 SEA → ONT Jul 11, 18:15 UTCJul 11, 20:30 UTC2h 15m
2026-07-11 ASA670 RDU → SEA Jul 11, 11:15 UTCJul 11, 16:35 UTC5h 20m
2026-07-11 ASA677 - Jul 11, 04:45 UTCJul 11, 09:15 UTC4h 30m
2026-07-10 ASA348 ATL → SEA Jul 10, 14:05 UTCJul 10, 18:40 UTC4h 35m
2026-07-10 ASA464 SEA → ATL Jul 10, 07:00 UTCJul 10, 11:25 UTC4h 25m
2026-07-09 ASA17 - Jul 9, 01:10 UTCJul 9, 06:35 UTC5h 25m
2026-07-08 ASA18 PDX → JFK Jul 8, 18:25 UTCJul 8, 23:20 UTC4h 55m
2026-07-08 ASA562 BUR → PDX Jul 8, 14:20 UTCJul 8, 16:05 UTC1h 45m
2026-07-08 ASA559 PDX → BUR Jul 8, 01:10 UTCJul 8, 03:05 UTC1h 55m
2026-07-07 ASA1302 - Jul 7, 22:40 UTCJul 7, 23:50 UTC1h 10m
2026-07-07 ASA655 SEA → SFO Jul 7, 19:22 UTCJul 7, 21:01 UTC1h 39m
2026-07-07 ASA655 SEA → SFO Jul 7, 19:25 UTCJul 7, 21:10 UTC1h 45m
2026-07-07 ASA1327 SFO → SEA Jul 7, 16:20 UTCJul 7, 18:00 UTC1h 40m
2026-07-07 ASA1327 SFO → SEA Jul 7, 16:27 UTCJul 7, 17:50 UTC1h 23m
2026-07-07 ASA1601 LAX → SFO Jul 7, 04:25 UTCJul 7, 05:25 UTC1h 0m
2026-07-06 ASA1406 - Jul 6, 23:45 UTCJul 7, 01:00 UTC1h 15m
2026-07-06 ASA546 - Jul 6, 19:35 UTCJul 6, 20:35 UTC1h 0m
2026-07-06 ASA546 SAN → SJD Jul 6, 19:30 UTCJul 6, 21:21 UTC1h 51m
2026-07-06 ASA673 GEG → SAN Jul 6, 15:20 UTCJul 6, 17:50 UTC2h 30m
2026-07-06 ASA1342 SEA → GEG Jul 6, 03:10 UTCJul 6, 03:45 UTC35m
2026-07-05 ASA503 LAX → SEA Jul 5, 21:51 UTCJul 6, 01:37 UTC3h 46m
2026-07-05 ASA503 LAX → SEA Jul 5, 21:45 UTCJul 6, 01:35 UTC3h 50m
2026-07-05 ASA422 SEA → AUS Jul 5, 16:50 UTCJul 5, 20:15 UTC3h 25m
2026-07-05 ASA491 RDU → SEA Jul 5, 13:35 UTCJul 5, 15:05 UTC1h 30m
2026-07-05 ASA706 - Jul 5, 02:30 UTCJul 5, 02:40 UTC10m
2026-07-05 ASA706 SEA → OAK Jul 5, 00:40 UTCJul 5, 02:20 UTC1h 40m
2026-07-04 ASA381 DEN → SEA Jul 4, 19:10 UTCJul 4, 21:40 UTC2h 30m
2026-07-04 ASA375 SEA → DEN Jul 4, 15:20 UTCJul 4, 17:25 UTC2h 5m
2026-07-03 ASA337 ORD → SEA Jul 3, 23:30 UTCJul 4, 03:30 UTC4h 0m
2026-07-03 ASA429 SEA → ORD Jul 3, 18:10 UTCJul 3, 21:45 UTC3h 35m
2026-07-03 ASA554 PDX → ORD Jul 3, 12:15 UTCJul 3, 15:40 UTC3h 25m
2026-07-03 ASA553 SEA → OKC Jul 3, 02:10 UTCJul 3, 05:20 UTC3h 10m
2026-07-02 ASA507 SNA → SEA Jul 2, 20:40 UTCJul 3, 00:45 UTC4h 5m
2026-07-02 ASA507 SNA → SEA Jul 2, 15:50 UTCJul 2, 19:25 UTC3h 35m
2026-07-02 ASA1337 LAX → PVR Jul 2, 00:45 UTCJul 2, 06:20 UTC5h 35m
2026-07-01 ASA219 SEA → BOS Jul 1, 17:50 UTCJul 1, 22:50 UTC5h 0m
2026-07-01 ASA75 - Jul 1, 11:45 UTCJul 1, 13:45 UTC2h 0m
2026-07-01 ASA75 ANC → SEA Jul 1, 11:45 UTCJul 1, 14:34 UTC2h 49m

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 N952AK page for operator, model, and routing details .

Mode-S AD3C1F frequently asked

What is Mode-S code AD3C1F?
AD3C1F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N952AK.
Where is Mode-S AD3C1F registered?
Mode-S code AD3C1F 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 AD3C1F broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3C1F, octal 53236037, decimal 11,353,119.
What flights does AD3C1F operate?
Mode-S AD3C1F has broadcast 20 distinct callsigns, including ASA708, ASA707, ASA626, ASA561, ASA560.