Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A28355

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N261GL · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A28355
Octal
50501525
Decimal
10,650,453
Country
US
Tail
N261GL
Type
B190
No current signal · last broadcast 3h ago
Flights observed
70
Distinct callsigns
13
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A28355.

Country allocation

The ICAO 24-bit address A28355 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
AIP1407 Alpine Air Express 13 2026-05-16
AIP1522 Alpine Air Express 12 2026-04-24
AIP1541 Alpine Air Express 10 2026-05-30
AIP1408 Alpine Air Express 10 2026-05-16
AIP1542 Alpine Air Express 9 2026-05-29
AIP1521 Alpine Air Express 9 2026-04-24
AIP308 Alpine Air Express 1 2026-04-24
AIP1604 Alpine Air Express 1 2026-05-01
AIP1603 Alpine Air Express 1 2026-05-01
AIP1578 Alpine Air Express 1 2026-04-30
AIP1577 Alpine Air Express 1 2026-05-01
AIP1566 Alpine Air Express 1 2026-05-23
AIP1565 Alpine Air Express 1 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AIP1541 BIS → FAR May 30, 00:40 UTCMay 30, 01:05 UTC25m
2026-05-29 AIP1542 FAR → DIK May 29, 12:05 UTCMay 29, 12:40 UTC35m
2026-05-29 AIP1541 BIS → FAR May 29, 00:35 UTCMay 29, 01:00 UTC25m
2026-05-28 AIP1542 FAR → DIK May 28, 12:00 UTCMay 28, 12:35 UTC35m
2026-05-28 AIP1541 BIS → FAR May 28, 00:40 UTCMay 28, 01:00 UTC20m
2026-05-27 AIP1542 FAR → DIK May 27, 12:20 UTCMay 27, 12:55 UTC35m
2026-05-27 AIP1541 BIS → FAR May 27, 00:25 UTCMay 27, 00:49 UTC25m
2026-05-26 AIP1542 FAR → DIK May 26, 21:29 UTCMay 26, 21:59 UTC30m
2026-05-23 AIP1566 XWA → FAR May 23, 14:55 UTCMay 23, 15:30 UTC35m
2026-05-23 AIP1565 FAR → XWA May 23, 12:25 UTCMay 23, 12:45 UTC20m
2026-05-23 AIP1541 BIS → FAR May 23, 00:35 UTCMay 23, 01:05 UTC30m
2026-05-22 AIP1542 FAR → DIK May 22, 11:40 UTCMay 22, 12:10 UTC30m
2026-05-22 AIP1541 BIS → FAR May 22, 00:45 UTCMay 22, 01:10 UTC25m
2026-05-21 AIP1542 FAR → DIK May 21, 11:40 UTCMay 21, 12:15 UTC35m
2026-05-21 AIP1541 BIS → FAR May 21, 00:25 UTCMay 21, 00:50 UTC25m
2026-05-20 AIP1542 FAR → DIK May 20, 12:30 UTCMay 20, 13:05 UTC35m
2026-05-20 AIP1541 BIS → FAR May 20, 00:30 UTCMay 20, 00:55 UTC25m
2026-05-19 AIP1542 FAR → DIK May 19, 13:00 UTCMay 19, 13:35 UTC35m
2026-05-19 AIP1541 BIS → FAR May 19, 00:50 UTCMay 19, 01:15 UTC25m
2026-05-18 AIP1542 FAR → DIK May 18, 21:30 UTCMay 18, 22:00 UTC30m
2026-05-16 AIP1407 MOT → FAR May 16, 14:16 UTCMay 16, 14:46 UTC30m
2026-05-16 AIP1408 FAR → XWA May 16, 12:21 UTCMay 16, 13:05 UTC45m
2026-05-15 AIP1407 MOT → FAR May 15, 23:30 UTCMay 16, 00:00 UTC30m
2026-05-15 AIP1408 FAR → XWA May 15, 11:50 UTCMay 15, 12:30 UTC40m
2026-05-14 AIP1407 MOT → FAR May 14, 23:30 UTCMay 15, 00:05 UTC35m
2026-05-14 AIP1408 FAR → XWA May 14, 12:35 UTCMay 14, 13:05 UTC30m
2026-05-13 AIP1407 MOT → FAR May 13, 23:30 UTCMay 14, 00:05 UTC35m
2026-05-13 AIP1408 FAR → XWA May 13, 12:15 UTCMay 13, 12:55 UTC40m
2026-05-12 AIP1407 MOT → FAR May 12, 23:30 UTCMay 13, 00:05 UTC35m
2026-05-12 AIP1408 FAR → XWA May 12, 12:40 UTCMay 12, 13:20 UTC40m
2026-05-11 AIP1407 MOT → FAR May 11, 21:45 UTCMay 11, 22:35 UTC49m
2026-05-09 AIP1407 MOT → FAR May 9, 14:20 UTCMay 9, 14:45 UTC25m
2026-05-09 AIP1408 FAR → XWA May 9, 12:40 UTCMay 9, 13:15 UTC35m
2026-05-08 AIP1407 MOT → FAR May 8, 23:30 UTCMay 9, 00:05 UTC35m
2026-05-08 AIP1408 FAR → XWA May 8, 12:10 UTCMay 8, 12:49 UTC40m
2026-05-07 AIP1407 MOT → FAR May 7, 23:34 UTCMay 8, 00:05 UTC30m
2026-05-07 AIP1408 FAR → XWA May 7, 12:30 UTCMay 7, 13:05 UTC35m
2026-05-06 AIP1407 MOT → FAR May 6, 23:30 UTCMay 7, 00:00 UTC30m
2026-05-06 AIP1408 FAR → XWA May 6, 12:45 UTCMay 6, 13:20 UTC35m
2026-05-05 AIP1407 MOT → FAR May 5, 23:30 UTCMay 6, 00:01 UTC30m
2026-05-05 AIP1408 FAR → XWA May 5, 12:30 UTCMay 5, 13:05 UTC35m
2026-05-04 AIP1407 MOT → FAR May 4, 23:25 UTCMay 4, 23:55 UTC30m
2026-05-04 AIP1407 MOT → FAR May 4, 21:40 UTCMay 4, 22:20 UTC40m
2026-05-02 AIP1541 BIS → FAR May 2, 21:35 UTCMay 2, 22:30 UTC55m
2026-05-01 AIP1604 RAP → FSD May 1, 14:10 UTCMay 1, 15:05 UTC55m
2026-05-01 AIP1603 FSD → RAP May 1, 11:35 UTCMay 1, 12:35 UTC1h 0m
2026-05-01 AIP1577 ABR → FSD May 1, 00:35 UTCMay 1, 01:05 UTC30m
2026-04-30 AIP1578 FSD → ABR Apr 30, 11:30 UTCApr 30, 12:05 UTC35m
2026-04-24 AIP308 - Apr 24, 14:30 UTCApr 24, 15:40 UTC1h 10m
2026-04-24 AIP1522 ICT → GCK Apr 24, 12:40 UTCApr 24, 13:10 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 N261GL page for operator, model, and routing details .

Mode-S A28355 frequently asked

What is Mode-S code A28355?
A28355 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N261GL.
Where is Mode-S A28355 registered?
Mode-S code A28355 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 A28355 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A28355, octal 50501525, decimal 10,650,453.
What flights does A28355 operate?
Mode-S A28355 has broadcast 13 distinct callsigns, including AIP1407, AIP1522, AIP1541, AIP1408, AIP1542.