Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A66CA5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N513AS · BOEING 737-800 · operated by UMB BANK NA TRUSTEE

Hex
A66CA5
Octal
51466245
Decimal
10,906,789
Country
US
Tail
N513AS
Type
B738
No current signal · last broadcast 1h ago
Flights observed
401
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A66CA5.

Country allocation

The ICAO 24-bit address A66CA5 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
ASA583 Alaska Airlines 6 2026-07-21
ASA1404 - 6 2026-07-16
ASA712 - 5 2026-07-13
ASA588 - 5 2026-07-13
ASA510 - 5 2026-07-11
ASA91 - 4 2026-07-20
ASA776 Alaska Airlines 4 2026-05-19
ASA770 Alaska Airlines 4 2026-05-14
ASA750 Alaska Airlines 4 2026-07-11
ASA702 Alaska Airlines 4 2026-05-31
ASA668 - 4 2026-07-13
ASA658 Alaska Airlines 4 2026-07-17
ASA64 - 4 2026-07-02
ASA5 - 4 2026-06-28
ASA346 Alaska Airlines 4 2026-07-20
ASA1355 - 4 2026-07-03
ASA1329 - 4 2026-07-03
ASA92 Alaska Airlines 3 2026-05-25
ASA9 Alaska Airlines 3 2026-06-03
ASA773 - 3 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 ASA605 SFO → LAS Jul 25, 01:20 UTCJul 25, 03:15 UTC1h 55m
2026-07-24 ASA674 SEA → YYZ Jul 24, 21:35 UTCJul 25, 00:00 UTC2h 25m
2026-07-24 ASA716 SFO → SAN Jul 24, 17:50 UTCJul 24, 20:10 UTC2h 20m
2026-07-24 ASA1643 RNO → PDX Jul 24, 15:20 UTCJul 24, 16:30 UTC1h 10m
2026-07-24 ASA1616 PDX → RNO Jul 24, 01:15 UTCJul 24, 02:20 UTC1h 5m
2026-07-23 ASA1315 LAX → PDX Jul 23, 21:45 UTCJul 23, 23:35 UTC1h 50m
2026-07-23 ASA695 SJC → PDX Jul 23, 17:55 UTCJul 23, 20:00 UTC2h 5m
2026-07-23 ASA1410 - Jul 23, 14:45 UTCJul 23, 15:55 UTC1h 10m
2026-07-23 ASA1410 SFO → PDX Jul 23, 14:41 UTCJul 23, 15:55 UTC1h 14m
2026-07-23 ASA788 KOA → SFO Jul 23, 02:00 UTCJul 23, 06:25 UTC4h 25m
2026-07-22 ASA258 - Jul 22, 18:45 UTCJul 23, 00:20 UTC5h 35m
2026-07-22 ASA795 DEN → PDX Jul 22, 15:10 UTCJul 22, 16:30 UTC1h 20m
2026-07-22 ASA795 DEN → PDX Jul 22, 15:09 UTCJul 22, 16:30 UTC1h 21m
2026-07-22 ASA1622 PDX → SMF Jul 22, 01:15 UTCJul 22, 02:25 UTC1h 10m
2026-07-21 ASA686 SFO → LAS Jul 21, 23:25 UTCJul 22, 00:00 UTC35m
2026-07-21 ASA548 MZT → SFO Jul 21, 19:50 UTCJul 21, 21:50 UTC2h 0m
2026-07-21 ASA548 MZT → SFO Jul 21, 19:45 UTCJul 21, 21:48 UTC2h 3m
2026-07-21 ASA759 SFO → LAS Jul 21, 16:20 UTCJul 21, 18:40 UTC2h 20m
2026-07-21 ASA583 SNA → PDX Jul 21, 01:02 UTCJul 21, 04:41 UTC3h 39m
2026-07-21 ASA583 SNA → PDX Jul 21, 00:40 UTCJul 21, 04:45 UTC4h 5m
2026-07-20 ASA346 SFO → FLL Jul 20, 19:30 UTCJul 20, 23:05 UTC3h 35m
2026-07-20 ASA651 - Jul 20, 15:15 UTCJul 20, 17:15 UTC2h 0m
2026-07-20 ASA91 - Jul 20, 05:55 UTCJul 20, 07:40 UTC1h 45m
2026-07-19 ASA572 RDU → SEA Jul 19, 22:15 UTCJul 20, 03:35 UTC5h 20m
2026-07-19 ASA572 RDU → SEA Jul 19, 15:55 UTCJul 19, 20:25 UTC4h 30m
2026-07-19 ASA296 LAX → SEA Jul 19, 00:20 UTCJul 19, 01:15 UTC55m
2026-07-18 ASA441 MSY → SEA Jul 18, 20:05 UTCJul 18, 21:05 UTC1h 0m
2026-07-18 ASA587 ORD → SEA Jul 18, 14:35 UTCJul 18, 18:30 UTC3h 55m
2026-07-18 ASA1724 ANC → ORD Jul 18, 06:10 UTCJul 18, 11:55 UTC5h 45m
2026-07-18 ASA1637 LAS → ANC Jul 18, 00:00 UTCJul 18, 04:50 UTC4h 51m
2026-07-17 ASA658 SEA → PHX Jul 17, 20:10 UTCJul 17, 22:25 UTC2h 15m
2026-07-17 ASA645 PHX → SEA Jul 17, 14:39 UTCJul 17, 17:09 UTC2h 30m
2026-07-17 ASA746 PDX → PHX Jul 17, 02:20 UTCJul 17, 04:59 UTC2h 40m
2026-07-17 ASA686 SEA → PDX Jul 17, 00:25 UTCJul 17, 00:55 UTC30m
2026-07-16 ASA471 - Jul 16, 17:35 UTCJul 16, 19:50 UTC2h 15m
2026-07-16 ASA471 SNA → SEA Jul 16, 17:50 UTCJul 16, 19:33 UTC1h 43m
2026-07-16 ASA1404 - Jul 16, 14:15 UTCJul 16, 16:25 UTC2h 10m
2026-07-16 ASA1404 PDX → SNA Jul 16, 14:12 UTCJul 16, 16:20 UTC2h 8m
2026-07-16 ASA710 GEG → PDX Jul 16, 12:09 UTCJul 16, 13:05 UTC55m
2026-07-16 ASA1614 - Jul 16, 04:40 UTCJul 16, 06:40 UTC2h 0m
2026-07-15 ASA751 - Jul 15, 03:45 UTCJul 15, 04:40 UTC55m
2026-07-14 ASA561 - Jul 14, 20:30 UTCJul 14, 21:25 UTC55m
2026-07-14 ASA560 - Jul 14, 18:30 UTCJul 14, 19:40 UTC1h 10m
2026-07-14 ASA687 - Jul 14, 16:25 UTCJul 14, 17:20 UTC55m
2026-07-14 ASA687 LAX → SFO Jul 14, 16:23 UTCJul 14, 17:11 UTC48m
2026-07-14 ASA1563 - Jul 14, 07:45 UTCJul 14, 12:35 UTC4h 50m
2026-07-14 ASA663 - Jul 14, 03:05 UTCJul 14, 06:25 UTC3h 20m
2026-07-14 ASA430 PDX → SEA Jul 14, 00:40 UTCJul 14, 01:05 UTC25m
2026-07-13 ASA712 - Jul 13, 21:25 UTCJul 13, 23:15 UTC1h 50m
2026-07-13 ASA588 - Jul 13, 17:50 UTCJul 13, 20:05 UTC2h 15m

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 N513AS page for operator, model, and routing details .

Mode-S A66CA5 frequently asked

What is Mode-S code A66CA5?
A66CA5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N513AS.
Where is Mode-S A66CA5 registered?
Mode-S code A66CA5 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 A66CA5 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A66CA5, octal 51466245, decimal 10,906,789.
What flights does A66CA5 operate?
Mode-S A66CA5 has broadcast 20 distinct callsigns, including ASA583, ASA1404, ASA712, ASA588, ASA510.