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sensors Mode-S transponder

A9E8CE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to PR-VBY · BOEING 737-700 · operated by ALASKA AIRLINES INC

Hex
A9E8CE
Octal
52364316
Decimal
11,135,182
Country
US
Tail
PR-VBY
Type
B737
Broadcasting now · callsign ASA228 · 38,000 ft
Flights observed
437
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Current position

A9E8CE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A9E8CE 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
ASA62 - 9 2026-07-22
ASA404 - 6 2026-07-12
ASA270 - 6 2026-07-19
ASA266 - 6 2026-07-02
ASA508 Alaska Airlines 5 2026-07-24
ASA435 Alaska Airlines 5 2026-04-17
ASA373 - 5 2026-06-19
ASA293 Alaska Airlines 5 2026-07-25
ASA786 - 4 2026-06-29
ASA56 - 4 2026-06-17
ASA49 Alaska Airlines 4 2026-07-22
ASA455 - 4 2026-06-18
ASA238 Alaska Airlines 4 2026-06-04
ASA204 - 4 2026-07-11
ASA1332 Alaska Airlines 4 2026-07-19
ASA715 Alaska Airlines 3 2026-06-05
ASA693 - 3 2026-07-01
ASA69 Alaska Airlines 3 2026-06-06
ASA657 Alaska Airlines 3 2026-05-02
ASA558 Alaska Airlines 3 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA325 ORD → PDX Jul 26, 20:00 UTCJul 26, 21:30 UTC1h 30m
2026-07-26 ASA324 SEA → SJC Jul 26, 18:05 UTCJul 26, 18:10 UTC5m
2026-07-26 ASA324 SEA → SJC Jul 26, 14:50 UTCJul 26, 18:10 UTC3h 20m
2026-07-26 ASA324 SEA → SJC Jul 26, 14:48 UTCJul 26, 17:48 UTC3h 0m
2026-07-26 ASA525 LAX → SEA Jul 26, 02:45 UTCJul 26, 03:55 UTC1h 10m
2026-07-25 ASA1385 SJC → SEA Jul 25, 23:45 UTCJul 26, 01:35 UTC1h 50m
2026-07-25 ASA293 EWR → SFO Jul 25, 21:31 UTCJul 25, 22:08 UTC37m
2026-07-25 ASA293 EWR → SFO Jul 25, 21:35 UTCJul 25, 22:15 UTC40m
2026-07-25 ASA449 TPA → SFO Jul 25, 19:32 UTCJul 25, 20:05 UTC33m
2026-07-25 ASA449 TPA → SFO Jul 25, 19:35 UTCJul 25, 20:10 UTC35m
2026-07-25 ASA1426 LAX → ZIH Jul 25, 16:10 UTCJul 25, 17:50 UTC1h 40m
2026-07-25 ASA1310 SFO → DAL Jul 25, 03:20 UTCJul 25, 05:10 UTC1h 50m
2026-07-24 ASA508 CVG → SEA Jul 24, 21:20 UTCJul 25, 01:55 UTC4h 35m
2026-07-24 ASA508 CVG → SEA Jul 24, 21:28 UTCJul 25, 01:49 UTC4h 21m
2026-07-24 ASA508 CVG → SEA Jul 24, 16:25 UTCJul 24, 20:05 UTC3h 40m
2026-07-24 ASA557 PDX → LAX Jul 24, 11:20 UTCJul 24, 14:30 UTC3h 10m
2026-07-24 ASA557 PDX → LAX Jul 24, 11:23 UTCJul 24, 14:20 UTC2h 57m
2026-07-24 ASA556 SFO → IAD Jul 24, 02:05 UTCJul 24, 04:40 UTC2h 35m
2026-07-24 ASA556 SFO → IAD Jul 24, 02:01 UTCJul 24, 04:35 UTC2h 34m
2026-07-23 ASA641 TUS → SEA Jul 23, 21:45 UTCJul 24, 00:20 UTC2h 35m
2026-07-23 ASA648 SEA → TUS Jul 23, 17:40 UTCJul 23, 20:15 UTC2h 35m
2026-07-23 ASA453 - Jul 23, 11:35 UTCJul 23, 15:40 UTC4h 5m
2026-07-23 ASA1573 SEA → IAH Jul 23, 01:50 UTCJul 23, 05:35 UTC3h 45m
2026-07-23 ASA1573 SEA → IAH Jul 23, 01:46 UTCJul 23, 05:27 UTC3h 41m
2026-07-22 ASA62 - Jul 22, 21:35 UTCJul 22, 23:05 UTC1h 30m
2026-07-22 ASA62 - Jul 22, 19:45 UTCJul 22, 20:10 UTC25m
2026-07-22 ASA62 - Jul 22, 17:50 UTCJul 22, 18:05 UTC15m
2026-07-22 ASA62 - Jul 22, 15:20 UTCJul 22, 16:30 UTC1h 10m
2026-07-22 ASA50 BRW → ANC Jul 22, 12:10 UTCJul 22, 13:10 UTC1h 0m
2026-07-22 ASA49 SNA → PDX Jul 22, 00:10 UTCJul 22, 01:00 UTC50m
2026-07-22 ASA49 SNA → PDX Jul 22, 00:09 UTCJul 22, 05:46 UTC5h 37m
2026-07-21 ASA433 IAD → SFO Jul 21, 18:15 UTCJul 21, 21:20 UTC3h 5m
2026-07-21 ASA1473 KOA → SEA Jul 21, 13:40 UTCJul 21, 15:50 UTC2h 10m
2026-07-21 ASA1348 SEA → PHL Jul 21, 00:05 UTCJul 21, 02:30 UTC2h 25m
2026-07-20 ASA580 PSP → SEA Jul 20, 20:45 UTCJul 20, 22:40 UTC1h 55m
2026-07-20 ASA426 SEA → JFK Jul 20, 17:00 UTCJul 20, 19:15 UTC2h 15m
2026-07-20 ASA607 TPA → SFO Jul 20, 13:15 UTCJul 20, 15:15 UTC2h 0m
2026-07-19 ASA1332 SAN → BOI Jul 19, 23:58 UTCJul 20, 04:47 UTC4h 49m
2026-07-19 ASA270 - Jul 19, 16:20 UTCJul 19, 21:55 UTC5h 35m
2026-07-19 ASA270 ONT → HNL Jul 19, 16:31 UTCJul 19, 21:35 UTC5h 4m
2026-07-19 ASA1332 SAN → BOI Jul 19, 03:50 UTCJul 19, 04:35 UTC45m
2026-07-18 ASA1332 SAN → BOI Jul 18, 23:40 UTCJul 19, 00:00 UTC20m
2026-07-18 ASA270 ONT → HNL Jul 18, 16:31 UTCJul 18, 21:47 UTC5h 16m
2026-07-18 ASA270 - Jul 18, 16:20 UTCJul 18, 21:45 UTC5h 25m
2026-07-18 ASA489 SEA → ONT Jul 18, 04:25 UTCJul 18, 06:40 UTC2h 15m
2026-07-17 ASA313 - Jul 17, 22:29 UTCJul 18, 02:45 UTC4h 15m
2026-07-17 ASA313 SEA → DTW Jul 17, 16:34 UTCJul 17, 20:20 UTC3h 45m
2026-07-17 ASA620 SEA → DEN Jul 17, 13:25 UTCJul 17, 14:50 UTC1h 25m
2026-07-17 ASA628 SEA → SFO Jul 17, 04:48 UTCJul 17, 06:30 UTC1h 42m
2026-07-17 ASA628 - Jul 17, 04:44 UTCJul 17, 05:30 UTC45m

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 PR-VBY page for operator, model, and routing details .

Mode-S A9E8CE frequently asked

What is Mode-S code A9E8CE?
A9E8CE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to PR-VBY.
Where is Mode-S A9E8CE registered?
Mode-S code A9E8CE 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 A9E8CE broadcasting right now?
Yes. Mode-S A9E8CE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9E8CE, octal 52364316, decimal 11,135,182.
What flights does A9E8CE operate?
Mode-S A9E8CE has broadcast 20 distinct callsigns, including ASA62, ASA404, ASA270, ASA266, ASA508.