Apparatus

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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
Broadcasting now · callsign ASA776 · 30,000 ft
Flights observed
434
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

A67F38 is currently broadcasting. Map zoomed to live position.

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 - 9 2026-07-20
ASA10 Alaska Airlines 8 2026-07-20
ASA14 Alaska Airlines 7 2026-07-26
ASA395 Alaska Airlines 6 2026-04-20
ASA303 Alaska Airlines 6 2026-06-09
ASA264 Alaska Airlines 6 2026-07-22
ASA1618 Alaska Airlines 6 2026-07-25
ASA1478 Alaska Airlines 6 2026-07-24
ASA771 Alaska Airlines 5 2026-04-20
ASA702 Alaska Airlines 5 2026-06-10
ASA324 - 5 2026-07-17
ASA15 Alaska Airlines 5 2026-07-26
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
ASA1616 Alaska Airlines 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA14 JFK → SFO Jul 26, 20:15 UTCJul 26, 22:00 UTC1h 45m
2026-07-26 ASA15 EWR → SEA Jul 26, 13:35 UTCJul 26, 18:10 UTC4h 35m
2026-07-25 ASA14 JFK → SFO Jul 25, 21:40 UTCJul 26, 02:05 UTC4h 25m
2026-07-25 ASA1618 SAN → DEN Jul 25, 17:50 UTCJul 25, 19:45 UTC1h 55m
2026-07-25 ASA1618 SAN → DEN Jul 25, 14:15 UTCJul 25, 16:15 UTC2h 0m
2026-07-25 ASA1466 PDX → SFO Jul 25, 01:15 UTCJul 25, 04:55 UTC3h 40m
2026-07-25 ASA1466 PDX → SFO Jul 25, 01:13 UTCJul 25, 04:55 UTC3h 42m
2026-07-24 ASA1478 SEA → SAN Jul 24, 19:55 UTCJul 24, 23:40 UTC3h 45m
2026-07-24 ASA1478 SEA → SAN Jul 24, 19:54 UTCJul 24, 23:29 UTC3h 35m
2026-07-24 ASA15 EWR → SEA Jul 24, 13:15 UTCJul 24, 18:00 UTC4h 45m
2026-07-23 ASA14 JFK → SFO Jul 23, 20:05 UTCJul 24, 00:35 UTC4h 30m
2026-07-23 ASA256 SJC → PDX Jul 23, 13:00 UTCJul 23, 18:35 UTC5h 35m
2026-07-23 ASA436 SEA → LAX Jul 23, 05:35 UTCJul 23, 10:10 UTC4h 35m
2026-07-23 ASA589 DAL → SEA Jul 23, 01:20 UTCJul 23, 03:25 UTC2h 5m
2026-07-22 ASA264 PDX → SJC Jul 22, 22:10 UTCJul 23, 00:20 UTC2h 10m
2026-07-22 ASA1355 SFO → SEA Jul 22, 19:15 UTCJul 22, 21:00 UTC1h 45m
2026-07-22 ASA1355 SFO → SEA Jul 22, 19:13 UTCJul 22, 21:06 UTC1h 53m
2026-07-22 ASA524 LAX → PDX Jul 22, 01:30 UTCJul 22, 03:55 UTC2h 25m
2026-07-21 ASA555 MSP → SEA Jul 21, 20:00 UTCJul 21, 23:25 UTC3h 25m
2026-07-21 ASA555 MSP → SEA Jul 21, 16:00 UTCJul 21, 18:45 UTC2h 45m
2026-07-20 ASA3 DCA → SEA Jul 20, 22:00 UTCJul 21, 03:10 UTC5h 9m
2026-07-20 ASA10 PDX → DCA Jul 20, 16:30 UTCJul 20, 20:35 UTC4h 5m
2026-07-20 ASA650 PHX → PDX Jul 20, 04:15 UTCJul 20, 06:25 UTC2h 10m
2026-07-20 ASA744 SEA → PHX Jul 20, 00:30 UTCJul 20, 03:05 UTC2h 35m
2026-07-19 ASA579 SAN → SEA Jul 19, 18:30 UTCJul 19, 22:40 UTC4h 10m
2026-07-19 ASA578 LAX → PDX Jul 19, 13:20 UTCJul 19, 16:45 UTC3h 25m
2026-07-18 ASA510 MSP → SEA Jul 18, 22:00 UTCJul 19, 01:20 UTC3h 20m
2026-07-18 ASA1429 SJD → SFO Jul 18, 17:40 UTCJul 18, 20:25 UTC2h 45m
2026-07-18 ASA1643 - Jul 18, 15:10 UTCJul 18, 16:20 UTC1h 10m
2026-07-18 ASA1616 PDX → RNO Jul 18, 01:10 UTCJul 18, 02:14 UTC1h 5m
2026-07-17 ASA325 - Jul 17, 20:04 UTCJul 17, 23:50 UTC3h 45m
2026-07-17 ASA324 - Jul 17, 18:00 UTCJul 17, 18:15 UTC15m
2026-07-17 ASA324 - Jul 17, 14:35 UTCJul 17, 18:15 UTC3h 40m
2026-07-17 ASA324 PDX → ORD Jul 17, 14:31 UTCJul 17, 17:42 UTC3h 11m
2026-07-17 ASA710 OGG → SFO Jul 17, 12:15 UTCJul 17, 13:05 UTC50m
2026-07-17 ASA566 - Jul 17, 04:04 UTCJul 17, 06:05 UTC2h 0m
2026-07-16 ASA1638 TPA → SAN Jul 16, 22:19 UTCJul 17, 02:39 UTC4h 20m
2026-07-16 ASA1638 TPA → SAN Jul 16, 22:18 UTCJul 17, 02:39 UTC4h 21m
2026-07-16 ASA1639 - Jul 16, 16:05 UTCJul 16, 20:29 UTC4h 25m
2026-07-16 ASA1617 DEN → SAN Jul 16, 12:25 UTCJul 16, 14:15 UTC1h 50m
2026-07-16 ASA1617 DEN → SAN Jul 16, 12:20 UTCJul 16, 14:14 UTC1h 54m
2026-07-16 ASA1619 - Jul 16, 03:10 UTCJul 16, 05:05 UTC1h 55m
2026-07-16 ASA266 - Jul 16, 00:55 UTCJul 16, 01:40 UTC45m
2026-07-15 ASA266 - Jul 15, 20:45 UTCJul 15, 20:55 UTC10m
2026-07-15 ASA693 - Jul 15, 19:05 UTCJul 15, 19:20 UTC15m
2026-07-15 ASA693 - Jul 15, 14:20 UTCJul 15, 14:55 UTC35m
2026-07-15 ASA291 - Jul 15, 05:15 UTCJul 15, 06:20 UTC1h 5m
2026-07-15 ASA780 - Jul 15, 01:15 UTCJul 15, 03:45 UTC2h 30m
2026-07-14 ASA549 - Jul 14, 19:40 UTCJul 14, 23:10 UTC3h 29m
2026-07-14 ASA1 DCA → SEA Jul 14, 12:15 UTCJul 14, 17:10 UTC4h 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 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?
Yes. Mode-S A67F38 is currently airborne.
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, ASA14, ASA395, ASA303.