Apparatus

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sensors Mode-S transponder

A17B5F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N195GL · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A17B5F
Octal
50275537
Decimal
10,582,879
Country
US
Tail
N195GL
Type
B190
No current signal · last broadcast 3d ago
Flights observed
140
Distinct callsigns
13
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A17B5F.

Country allocation

The ICAO 24-bit address A17B5F 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 13 distinct

Callsign Airline Flights Last seen
AIP1563 Alpine Air Express 35 2026-07-24
AIP1564 Alpine Air Express 25 2026-07-25
AIP1407 Alpine Air Express 25 2026-07-18
AIP1408 - 19 2026-07-18
AIP1541 Alpine Air Express 10 2026-07-25
AIP1542 Alpine Air Express 7 2026-07-25
AIP1588 - 4 2026-06-19
AIP1587 - 4 2026-06-20
AIP1566 - 3 2026-06-29
AIP1565 - 3 2026-06-29
AIP1604 Alpine Air Express 2 2026-05-15
AIP1603 Alpine Air Express 2 2026-05-15
AIP1577 Alpine Air Express 1 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AIP1541 BIS → FAR Jul 25, 20:55 UTCJul 25, 21:45 UTC50m
2026-07-25 AIP1541 BIS → FAR Jul 25, 18:00 UTCJul 25, 18:25 UTC25m
2026-07-25 AIP1542 FAR → DIK Jul 25, 12:40 UTCJul 25, 13:15 UTC35m
2026-07-25 AIP1564 TVF → FAR Jul 25, 01:10 UTCJul 25, 01:25 UTC15m
2026-07-24 AIP1563 BIS → TVF Jul 24, 15:40 UTCJul 24, 16:10 UTC30m
2026-07-24 AIP1563 BIS → TVF Jul 24, 12:05 UTCJul 24, 12:45 UTC40m
2026-07-24 AIP1564 TVF → FAR Jul 24, 00:25 UTCJul 24, 00:40 UTC15m
2026-07-23 AIP1563 BIS → TVF Jul 23, 22:50 UTCJul 23, 23:15 UTC25m
2026-07-23 AIP1563 BIS → TVF Jul 23, 11:55 UTCJul 23, 12:20 UTC25m
2026-07-23 AIP1564 TVF → FAR Jul 23, 00:15 UTCJul 23, 00:30 UTC15m
2026-07-22 AIP1563 BIS → TVF Jul 22, 22:35 UTCJul 22, 23:10 UTC35m
2026-07-22 AIP1563 BIS → TVF Jul 22, 12:05 UTCJul 22, 12:35 UTC30m
2026-07-22 AIP1564 TVF → FAR Jul 22, 00:25 UTCJul 22, 00:35 UTC10m
2026-07-21 AIP1563 BIS → TVF Jul 21, 22:40 UTCJul 21, 23:05 UTC25m
2026-07-21 AIP1563 BIS → TVF Jul 21, 12:30 UTCJul 21, 13:00 UTC30m
2026-07-21 AIP1564 - Jul 21, 00:05 UTCJul 21, 00:20 UTC15m
2026-07-20 AIP1564 - Jul 20, 22:00 UTCJul 20, 22:15 UTC15m
2026-07-18 AIP1407 MOT → FAR Jul 18, 14:00 UTCJul 18, 14:35 UTC35m
2026-07-18 AIP1408 - Jul 18, 12:25 UTCJul 18, 13:05 UTC40m
2026-07-17 AIP1407 MOT → FAR Jul 17, 23:14 UTCJul 17, 23:55 UTC40m
2026-07-17 AIP1408 - Jul 17, 11:39 UTCJul 17, 12:19 UTC40m
2026-07-16 AIP1407 - Jul 16, 23:29 UTCJul 16, 23:59 UTC30m
2026-07-16 AIP1408 - Jul 16, 11:54 UTCJul 16, 12:30 UTC35m
2026-07-15 AIP1407 - Jul 15, 23:25 UTCJul 16, 00:05 UTC40m
2026-07-15 AIP1407 - Jul 15, 11:45 UTCJul 15, 12:25 UTC40m
2026-07-11 AIP1407 - Jul 11, 14:40 UTCJul 11, 15:05 UTC25m
2026-07-11 AIP1408 - Jul 11, 13:00 UTCJul 11, 13:40 UTC40m
2026-07-10 AIP1407 - Jul 10, 23:15 UTCJul 10, 23:50 UTC35m
2026-07-10 AIP1408 - Jul 10, 12:50 UTCJul 10, 13:30 UTC40m
2026-07-09 AIP1407 MOT → FAR Jul 9, 23:20 UTCJul 9, 23:55 UTC35m
2026-07-09 AIP1408 - Jul 9, 12:05 UTCJul 9, 12:40 UTC35m
2026-07-08 AIP1407 MOT → FAR Jul 8, 23:25 UTCJul 9, 00:00 UTC35m
2026-07-08 AIP1408 - Jul 8, 12:10 UTCJul 8, 12:45 UTC35m
2026-07-07 AIP1407 MOT → FAR Jul 7, 23:20 UTCJul 8, 00:00 UTC40m
2026-07-07 AIP1408 - Jul 7, 11:40 UTCJul 7, 12:20 UTC40m
2026-07-06 AIP1407 MOT → FAR Jul 6, 23:25 UTCJul 7, 00:00 UTC35m
2026-07-06 AIP1407 MOT → FAR Jul 6, 21:20 UTCJul 6, 21:55 UTC35m
2026-07-03 AIP1407 MOT → FAR Jul 3, 23:15 UTCJul 3, 23:55 UTC40m
2026-07-03 AIP1408 - Jul 3, 12:00 UTCJul 3, 12:35 UTC35m
2026-07-02 AIP1407 MOT → FAR Jul 2, 23:25 UTCJul 3, 00:05 UTC40m
2026-07-02 AIP1408 - Jul 2, 11:50 UTCJul 2, 12:30 UTC40m
2026-07-01 AIP1407 MOT → FAR Jul 1, 23:25 UTCJul 2, 00:00 UTC35m
2026-07-01 AIP1408 - Jul 1, 12:10 UTCJul 1, 12:45 UTC35m
2026-06-30 AIP1407 MOT → FAR Jun 30, 23:25 UTCJul 1, 00:00 UTC35m
2026-06-30 AIP1408 - Jun 30, 13:00 UTCJun 30, 13:40 UTC40m
2026-06-29 AIP1566 - Jun 29, 23:49 UTCJun 30, 00:30 UTC40m
2026-06-29 AIP1565 - Jun 29, 21:30 UTCJun 29, 22:00 UTC30m
2026-06-27 AIP1541 - Jun 27, 00:29 UTCJun 27, 00:50 UTC20m
2026-06-26 AIP1542 - Jun 26, 14:35 UTCJun 26, 15:10 UTC35m
2026-06-26 AIP1541 - Jun 26, 00:35 UTCJun 26, 00:55 UTC20m

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 N195GL page for operator, model, and routing details .

Mode-S A17B5F frequently asked

What is Mode-S code A17B5F?
A17B5F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N195GL.
Where is Mode-S A17B5F registered?
Mode-S code A17B5F 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 A17B5F broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17B5F, octal 50275537, decimal 10,582,879.
What flights does A17B5F operate?
Mode-S A17B5F has broadcast 13 distinct callsigns, including AIP1563, AIP1564, AIP1407, AIP1408, AIP1541.