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sensors Mode-S transponder

A67F38

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N518AS · BOEING 737-800 · operated by ALASKA AIRLINES INC

Hex
A67F38
Octal
51477470
Decimal
10,911,544
Country
US
Tail
N518AS
Type
B738
No current signal · last broadcast 5h ago
Flights observed
384
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A67F38.

Country allocation

The ICAO 24-bit address A67F38 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
ASA3 Alaska Airlines 8 2026-05-30
ASA10 Alaska Airlines 7 2026-05-30
ASA395 Alaska Airlines 6 2026-04-20
ASA303 Alaska Airlines 6 2026-06-09
ASA771 Alaska Airlines 5 2026-04-20
ASA702 Alaska Airlines 5 2026-06-10
ASA264 Alaska Airlines 5 2026-06-07
ASA759 Alaska Airlines 4 2026-05-11
ASA741 Alaska Airlines 4 2026-05-04
ASA712 - 4 2026-07-07
ASA658 Alaska Airlines 4 2026-04-17
ASA648 - 4 2026-06-28
ASA634 Alaska Airlines 4 2026-04-17
ASA61 - 4 2026-07-09
ASA1618 Alaska Airlines 4 2026-07-06
ASA1478 Alaska Airlines 4 2026-04-28
ASA14 Alaska Airlines 4 2026-05-08
ASA1325 Alaska Airlines 4 2026-06-16
ASA786 Alaska Airlines 3 2026-05-02
ASA781 - 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ASA2 - Jul 13, 21:15 UTCJul 14, 01:50 UTC4h 35m
2026-07-13 ASA1311 SJC → SEA Jul 13, 17:39 UTCJul 13, 18:48 UTC1h 9m
2026-07-13 ASA1311 SJC → SEA Jul 13, 17:30 UTCJul 13, 19:05 UTC1h 35m
2026-07-13 ASA1448 SEA → SJC Jul 13, 14:25 UTCJul 13, 16:20 UTC1h 55m
2026-07-13 ASA54 - Jul 13, 09:35 UTCJul 13, 12:40 UTC3h 5m
2026-07-13 ASA1532 PHX → ANC Jul 13, 02:01 UTCJul 13, 07:05 UTC5h 5m
2026-07-12 ASA731 - Jul 12, 22:00 UTCJul 13, 00:01 UTC2h 0m
2026-07-12 ASA731 PDX → PHX Jul 12, 22:05 UTCJul 13, 00:38 UTC2h 33m
2026-07-12 ASA1467 LAS → PDX Jul 12, 18:21 UTCJul 12, 20:03 UTC1h 42m
2026-07-12 ASA1467 - Jul 12, 18:20 UTCJul 12, 20:05 UTC1h 45m
2026-07-12 ASA627 PDX → LAS Jul 12, 14:40 UTCJul 12, 16:45 UTC2h 5m
2026-07-12 ASA1787 - Jul 12, 00:45 UTCJul 12, 06:01 UTC5h 15m
2026-07-12 ASA1787 PHL → PHL Jul 12, 00:25 UTCJul 12, 00:40 UTC15m
2026-07-11 ASA442 SEA → PHL Jul 11, 18:15 UTCJul 11, 22:50 UTC4h 35m
2026-07-09 ASA272 ANC → SEA Jul 9, 23:50 UTCJul 10, 03:00 UTC3h 10m
2026-07-09 ASA61 - Jul 9, 21:30 UTCJul 9, 22:10 UTC40m
2026-07-09 ASA61 - Jul 9, 20:10 UTCJul 9, 20:45 UTC35m
2026-07-09 ASA61 - Jul 9, 17:45 UTCJul 9, 17:55 UTC10m
2026-07-09 ASA61 - Jul 9, 14:25 UTCJul 9, 16:25 UTC2h 0m
2026-07-09 ASA611 PHX → SEA Jul 9, 02:55 UTCJul 9, 05:25 UTC2h 30m
2026-07-08 ASA746 - Jul 8, 01:20 UTCJul 8, 03:35 UTC2h 15m
2026-07-07 ASA712 - Jul 7, 21:20 UTCJul 7, 23:15 UTC1h 55m
2026-07-07 ASA712 SNA → PDX Jul 7, 21:18 UTCJul 7, 23:17 UTC1h 59m
2026-07-07 ASA588 - Jul 7, 17:50 UTCJul 7, 19:55 UTC2h 5m
2026-07-07 ASA1641 RNO → PDX Jul 7, 15:05 UTCJul 7, 16:10 UTC1h 5m
2026-07-07 ASA1616 PDX → RNO Jul 7, 01:40 UTCJul 7, 02:50 UTC1h 10m
2026-07-06 ASA1402 - Jul 6, 22:30 UTCJul 7, 00:30 UTC2h 0m
2026-07-06 ASA1402 SAN → PDX Jul 6, 22:30 UTCJul 7, 00:26 UTC1h 56m
2026-07-06 ASA1618 SAN → DEN Jul 6, 18:55 UTCJul 6, 20:55 UTC2h 0m
2026-07-06 ASA1618 SAN → DEN Jul 6, 14:15 UTCJul 6, 16:00 UTC1h 45m
2026-07-05 ASA474 - Jul 5, 23:45 UTCJul 6, 04:25 UTC4h 40m
2026-07-05 ASA434 - Jul 5, 16:55 UTCJul 5, 22:00 UTC5h 5m
2026-07-05 ASA1623 SJC → SAN Jul 5, 14:25 UTCJul 5, 15:30 UTC1h 5m
2026-07-05 ASA1624 - Jul 5, 00:50 UTCJul 5, 01:50 UTC1h 0m
2026-07-04 ASA551 - Jul 4, 20:00 UTCJul 4, 22:40 UTC2h 40m
2026-07-04 ASA340 SEA → DFW Jul 4, 15:00 UTCJul 4, 18:15 UTC3h 15m
2026-07-03 ASA326 TPA → SEA Jul 3, 23:10 UTCJul 4, 04:40 UTC5h 30m
2026-07-03 ASA262 SEA → TPA Jul 3, 16:40 UTCJul 3, 21:45 UTC5h 5m
2026-07-03 ASA1529 SEA → RDU Jul 3, 12:10 UTCJul 3, 14:00 UTC1h 50m
2026-07-03 ASA1529 SEA → RDU Jul 3, 12:06 UTCJul 3, 14:40 UTC2h 34m
2026-07-03 ASA1526 SEA → MSY Jul 3, 03:05 UTCJul 3, 05:30 UTC2h 25m
2026-07-03 ASA430 PDX → SEA Jul 3, 00:50 UTCJul 3, 01:14 UTC24m
2026-07-03 ASA430 PDX → SEA Jul 3, 00:45 UTCJul 3, 01:25 UTC40m
2026-07-02 ASA712 - Jul 2, 21:15 UTCJul 2, 23:25 UTC2h 10m
2026-07-02 ASA588 - Jul 2, 17:45 UTCJul 2, 20:00 UTC2h 15m
2026-07-02 ASA1641 RNO → PDX Jul 2, 15:10 UTCJul 2, 16:20 UTC1h 10m
2026-07-02 ASA1616 PDX → RNO Jul 2, 01:15 UTCJul 2, 02:20 UTC1h 5m
2026-07-01 ASA325 ORD → PDX Jul 1, 19:55 UTCJul 1, 23:45 UTC3h 50m
2026-07-01 ASA324 - Jul 1, 14:10 UTCJul 1, 17:45 UTC3h 35m
2026-06-30 ASA646 DFW → PDX Jun 30, 23:05 UTCJul 1, 02:45 UTC3h 40m

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 N518AS page for operator, model, and routing details .

Mode-S A67F38 frequently asked

What is Mode-S code A67F38?
A67F38 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N518AS.
Where is Mode-S A67F38 registered?
Mode-S code A67F38 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 A67F38 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A67F38, octal 51477470, decimal 10,911,544.
What flights does A67F38 operate?
Mode-S A67F38 has broadcast 20 distinct callsigns, including ASA3, ASA10, ASA395, ASA303, ASA771.