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sensors Mode-S transponder

A5E073

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N478SS · PILATUS PC-12 · operated by BOUTIQUE AIR INC

Hex
A5E073
Octal
51360163
Decimal
10,870,899
Country
US
Tail
N478SS
Type
PC12
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
364
Distinct callsigns
14
Country
US
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S A5E073.

Country allocation

The ICAO 24-bit address A5E073 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 14 distinct

Callsign Airline Flights Last seen
BTQ356 Boutique Air 59 2026-07-26
BTQ355 Boutique Air 58 2026-07-25
BTQ354 Boutique Air 58 2026-07-26
BTQ353 Boutique Air 58 2026-07-26
BTQ352 Boutique Air 58 2026-07-26
BTQ351 Boutique Air 58 2026-07-26
BTQ901 - 5 2026-06-29
BTQ903 Boutique Air 2 2026-04-29
BTQ702 Boutique Air 2 2026-04-30
BTQ701 Boutique Air 2 2026-04-30
BTQ987 - 1 2026-06-20
BTQ509 - 1 2026-06-04
BTQ102 Boutique Air 1 2026-04-29
BTQ101 Boutique Air 1 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BTQ354 PDX → PDT Jul 26, 20:55 UTCJul 26, 21:25 UTC30m
2026-07-26 BTQ353 PDT → PDX Jul 26, 16:50 UTCJul 26, 17:20 UTC30m
2026-07-26 BTQ352 PDX → PDT Jul 26, 15:00 UTCJul 26, 15:25 UTC25m
2026-07-26 BTQ351 PDT → PDX Jul 26, 13:25 UTCJul 26, 13:50 UTC25m
2026-07-26 BTQ356 PDX → PDT Jul 26, 00:15 UTCJul 26, 00:40 UTC25m
2026-07-25 BTQ355 PDT → PDX Jul 25, 22:40 UTCJul 25, 23:05 UTC25m
2026-07-25 BTQ354 PDX → PDT Jul 25, 20:55 UTCJul 25, 21:25 UTC30m
2026-07-25 BTQ353 PDT → PDX Jul 25, 16:50 UTCJul 25, 17:25 UTC35m
2026-07-25 BTQ352 PDX → PDT Jul 25, 15:05 UTCJul 25, 15:35 UTC30m
2026-07-25 BTQ351 PDT → PDX Jul 25, 13:10 UTCJul 25, 13:55 UTC45m
2026-07-25 BTQ356 PDX → PDT Jul 25, 00:30 UTCJul 25, 01:00 UTC30m
2026-07-24 BTQ355 PDT → PDX Jul 24, 22:55 UTCJul 24, 23:25 UTC30m
2026-07-24 BTQ354 PDX → PDT Jul 24, 21:05 UTCJul 24, 21:35 UTC30m
2026-07-24 BTQ353 PDT → PDX Jul 24, 16:40 UTCJul 24, 17:10 UTC30m
2026-07-24 BTQ352 - Jul 24, 14:55 UTCJul 24, 15:25 UTC30m
2026-07-24 BTQ351 - Jul 24, 13:25 UTCJul 24, 13:55 UTC30m
2026-07-24 BTQ356 PDX → PDT Jul 24, 00:20 UTCJul 24, 00:50 UTC30m
2026-07-23 BTQ355 PDT → PDX Jul 23, 22:45 UTCJul 23, 23:15 UTC30m
2026-07-23 BTQ354 PDX → PDT Jul 23, 21:10 UTCJul 23, 21:40 UTC30m
2026-07-23 BTQ353 PDT → PDX Jul 23, 16:50 UTCJul 23, 17:25 UTC35m
2026-07-23 BTQ352 - Jul 23, 15:05 UTCJul 23, 15:35 UTC30m
2026-07-23 BTQ351 - Jul 23, 13:25 UTCJul 23, 13:55 UTC30m
2026-07-23 BTQ356 PDX → PDT Jul 23, 01:00 UTCJul 23, 01:30 UTC30m
2026-07-22 BTQ355 PDT → PDX Jul 22, 22:50 UTCJul 22, 23:15 UTC25m
2026-07-22 BTQ354 PDX → PDT Jul 22, 21:00 UTCJul 22, 21:30 UTC30m
2026-07-22 BTQ353 PDT → PDX Jul 22, 16:45 UTCJul 22, 17:15 UTC30m
2026-07-22 BTQ352 - Jul 22, 14:55 UTCJul 22, 15:25 UTC30m
2026-07-22 BTQ351 - Jul 22, 13:15 UTCJul 22, 13:55 UTC40m
2026-07-22 BTQ356 PDX → PDT Jul 22, 00:10 UTCJul 22, 00:40 UTC30m
2026-07-21 BTQ355 PDT → PDX Jul 21, 22:45 UTCJul 21, 23:10 UTC25m
2026-07-21 BTQ354 - Jul 21, 20:50 UTCJul 21, 21:20 UTC30m
2026-07-21 BTQ353 PDT → PDX Jul 21, 16:55 UTCJul 21, 17:20 UTC25m
2026-07-21 BTQ352 - Jul 21, 14:45 UTCJul 21, 15:15 UTC30m
2026-07-21 BTQ351 - Jul 21, 13:10 UTCJul 21, 13:35 UTC25m
2026-07-21 BTQ356 - Jul 21, 00:10 UTCJul 21, 00:35 UTC25m
2026-07-20 BTQ355 PDT → PDX Jul 20, 22:45 UTCJul 20, 23:10 UTC25m
2026-07-20 BTQ354 - Jul 20, 20:40 UTCJul 20, 21:10 UTC30m
2026-07-20 BTQ353 - Jul 20, 16:40 UTCJul 20, 17:00 UTC20m
2026-07-20 BTQ352 - Jul 20, 14:55 UTCJul 20, 15:25 UTC30m
2026-07-20 BTQ351 - Jul 20, 13:20 UTCJul 20, 13:50 UTC30m
2026-07-20 BTQ356 - Jul 20, 00:10 UTCJul 20, 00:40 UTC30m
2026-07-19 BTQ355 PDT → PDX Jul 19, 22:40 UTCJul 19, 23:10 UTC30m
2026-07-19 BTQ354 - Jul 19, 20:50 UTCJul 19, 21:20 UTC30m
2026-07-19 BTQ353 - Jul 19, 16:35 UTCJul 19, 17:00 UTC25m
2026-07-19 BTQ352 - Jul 19, 14:50 UTCJul 19, 15:20 UTC30m
2026-07-19 BTQ351 - Jul 19, 13:20 UTCJul 19, 13:45 UTC25m
2026-07-19 BTQ356 - Jul 19, 00:20 UTCJul 19, 00:45 UTC25m
2026-07-18 BTQ355 PDT → PDX Jul 18, 22:40 UTCJul 18, 23:05 UTC25m
2026-07-18 BTQ354 - Jul 18, 20:55 UTCJul 18, 21:20 UTC25m
2026-07-18 BTQ353 - Jul 18, 16:45 UTCJul 18, 17:15 UTC30m

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 N478SS page for operator, model, and routing details .

Mode-S A5E073 frequently asked

What is Mode-S code A5E073?
A5E073 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N478SS.
Where is Mode-S A5E073 registered?
Mode-S code A5E073 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 A5E073 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5E073, octal 51360163, decimal 10,870,899.
What flights does A5E073 operate?
Mode-S A5E073 has broadcast 14 distinct callsigns, including BTQ356, BTQ355, BTQ354, BTQ353, BTQ352.