Apparatus

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sensors Mode-S transponder

ADF60E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N999WH · operated by RED WING SOARING ASSOCIATION

Hex
ADF60E
Octal
53373016
Decimal
11,400,718
Country
US
Tail
N999WH
Type
GLID
Broadcasting now · callsign N999WH · 3,400 ft
Flights observed
19
Distinct callsigns
1
Country
US
Last broadcast
21h ago

Current position

ADF60E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ADF60E 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 1 distinct

Callsign Airline Flights Last seen
N999WH - 19 2026-07-18

Recent flights last 19

DateFlightRouteTakeoffLandingDuration
2026-07-18 N999WH OEO → OEO Jul 18, 20:00 UTCJul 18, 21:20 UTC1h 20m
2026-07-18 N999WH OEO → OEO Jul 18, 17:25 UTCJul 18, 17:40 UTC15m
2026-07-18 N999WH OEO → OEO Jul 18, 16:30 UTCJul 18, 16:50 UTC20m
2026-07-12 N999WH - Jul 12, 19:50 UTCJul 12, 20:10 UTC20m
2026-07-11 N999WH - Jul 11, 20:50 UTCJul 11, 22:15 UTC1h 25m
2026-07-11 N999WH - Jul 11, 18:45 UTCJul 11, 19:10 UTC25m
2026-07-11 N999WH OEO → OEO Jul 11, 17:20 UTCJul 11, 17:55 UTC35m
2026-07-05 N999WH - Jul 5, 19:40 UTCJul 5, 20:45 UTC1h 5m
2026-07-05 N999WH - Jul 5, 17:45 UTCJul 5, 18:30 UTC45m
2026-06-27 N999WH OEO → OEO Jun 27, 20:44 UTCJun 27, 21:10 UTC25m
2026-06-27 N999WH OEO → OEO Jun 27, 19:34 UTCJun 27, 20:04 UTC30m
2026-06-27 N999WH OEO → OEO Jun 27, 17:49 UTCJun 27, 18:54 UTC1h 5m
2026-06-27 N999WH OEO → OEO Jun 27, 15:14 UTCJun 27, 15:45 UTC30m
2026-06-20 N999WH OEO → OEO Jun 20, 20:14 UTCJun 20, 23:19 UTC3h 5m
2026-06-13 N999WH - Jun 13, 18:00 UTCJun 13, 20:15 UTC2h 15m
2026-06-07 N999WH - Jun 7, 17:00 UTCJun 7, 17:15 UTC15m
2026-06-06 N999WH - Jun 6, 19:10 UTCJun 6, 21:25 UTC2h 15m
2026-05-08 N999WH - May 8, 20:00 UTCMay 8, 21:55 UTC1h 55m
2026-05-02 N999WH OEO → OEO May 2, 18:20 UTCMay 2, 21:35 UTC3h 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 N999WH page for operator, model, and routing details .

Mode-S ADF60E frequently asked

What is Mode-S code ADF60E?
ADF60E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N999WH.
Where is Mode-S ADF60E registered?
Mode-S code ADF60E 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 ADF60E broadcasting right now?
Yes. Mode-S ADF60E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF60E, octal 53373016, decimal 11,400,718.
What flights does ADF60E operate?
Mode-S ADF60E has broadcast 1 distinct callsign, including N999WH.