Apparatus

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sensors Mode-S transponder

ADF3E9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N99885 · CESSNA 172 Skyhawk · operated by AZ2025 LLC

Hex
ADF3E9
Octal
53371751
Decimal
11,400,169
Country
US
Tail
N99885
Type
C172
No current signal · last broadcast 2h ago
Flights observed
133
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S ADF3E9.

Country allocation

The ICAO 24-bit address ADF3E9 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
OZN969 - 133 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 OZN969 - May 29, 21:20 UTCMay 29, 22:55 UTC1h 35m
2026-05-29 OZN969 - May 29, 15:55 UTCMay 29, 18:15 UTC2h 20m
2026-05-29 OZN969 TMB → TMB May 29, 13:30 UTCMay 29, 14:25 UTC55m
2026-05-29 OZN969 TMB → TMB May 29, 11:40 UTCMay 29, 12:45 UTC1h 5m
2026-05-28 OZN969 TMB → TMB May 28, 19:40 UTCMay 28, 20:45 UTC1h 5m
2026-05-25 OZN969 TMB → TMB May 25, 21:24 UTCMay 25, 23:00 UTC1h 35m
2026-05-25 OZN969 - May 25, 15:50 UTCMay 25, 16:45 UTC55m
2026-05-25 OZN969 TMB → TMB May 25, 11:25 UTCMay 25, 12:30 UTC1h 5m
2026-05-24 OZN969 - May 24, 15:50 UTCMay 24, 16:55 UTC1h 5m
2026-05-24 OZN969 TMB → TMB May 24, 13:35 UTCMay 24, 14:35 UTC1h 0m
2026-05-24 OZN969 TMB → TMB May 24, 11:35 UTCMay 24, 12:40 UTC1h 5m
2026-05-23 OZN969 TMB → TMB May 23, 19:40 UTCMay 23, 20:40 UTC1h 0m
2026-05-23 OZN969 - May 23, 15:50 UTCMay 23, 16:45 UTC55m
2026-05-23 OZN969 TMB → TMB May 23, 11:30 UTCMay 23, 12:40 UTC1h 10m
2026-05-22 OZN969 TMB → TMB May 22, 19:40 UTCMay 22, 20:45 UTC1h 5m
2026-05-22 OZN969 - May 22, 17:40 UTCMay 22, 18:40 UTC1h 0m
2026-05-22 OZN969 - May 22, 15:40 UTCMay 22, 16:50 UTC1h 10m
2026-05-22 OZN969 TMB → TMB May 22, 13:25 UTCMay 22, 14:25 UTC1h 0m
2026-05-22 OZN969 TMB → TMB May 22, 11:35 UTCMay 22, 12:20 UTC45m
2026-05-21 OZN969 - May 21, 17:50 UTCMay 21, 20:10 UTC2h 20m
2026-05-21 OZN969 - May 21, 13:45 UTCMay 21, 15:55 UTC2h 10m
2026-05-20 OZN969 TMB → TMB May 20, 19:45 UTCMay 20, 20:50 UTC1h 5m
2026-05-20 OZN969 TMB → TMB May 20, 15:25 UTCMay 20, 16:50 UTC1h 25m
2026-05-19 OZN969 TMB → TMB May 19, 11:35 UTCMay 19, 11:40 UTC5m
2026-05-19 OZN969 - May 19, 11:20 UTCMay 19, 11:30 UTC10m
2026-05-18 OZN969 TMB → TMB May 18, 17:40 UTCMay 18, 18:45 UTC1h 4m
2026-05-18 OZN969 TMB → TMB May 18, 15:25 UTCMay 18, 16:45 UTC1h 20m
2026-05-18 OZN969 - May 18, 14:05 UTCMay 18, 14:35 UTC30m
2026-05-18 OZN969 TMB → TMB May 18, 13:45 UTCMay 18, 14:00 UTC15m
2026-05-18 OZN969 TMB → TMB May 18, 13:35 UTCMay 18, 13:40 UTC5m
2026-05-18 OZN969 TMB → TMB May 18, 11:35 UTCMay 18, 12:35 UTC1h 0m
2026-05-17 OZN969 TMB → TMB May 17, 19:55 UTCMay 17, 20:40 UTC45m
2026-05-17 OZN969 TMB → TMB May 17, 18:10 UTCMay 17, 19:01 UTC50m
2026-05-17 OZN969 - May 17, 13:35 UTCMay 17, 14:50 UTC1h 15m
2026-05-16 OZN969 - May 16, 19:30 UTCMay 16, 20:35 UTC1h 5m
2026-05-16 OZN969 - May 16, 17:35 UTCMay 16, 18:50 UTC1h 15m
2026-05-16 OZN969 TMB → TMB May 16, 16:05 UTCMay 16, 16:45 UTC40m
2026-05-16 OZN969 TMB → TMB May 16, 13:55 UTCMay 16, 14:46 UTC50m
2026-05-16 OZN969 TMB → TMB May 16, 01:00 UTCMay 16, 02:15 UTC1h 15m
2026-05-15 OZN969 TMB → TMB May 15, 19:50 UTCMay 15, 20:55 UTC1h 5m
2026-05-15 OZN969 - May 15, 15:55 UTCMay 15, 16:50 UTC55m
2026-05-14 OZN969 - May 14, 21:50 UTCMay 14, 23:05 UTC1h 15m
2026-05-14 OZN969 - May 14, 17:45 UTCMay 14, 18:50 UTC1h 5m
2026-05-14 OZN969 TMB → TMB May 14, 14:01 UTCMay 14, 16:30 UTC2h 30m
2026-05-13 OZN969 TMB → TMB May 13, 21:25 UTCMay 13, 22:25 UTC1h 0m
2026-05-13 OZN969 - May 13, 19:55 UTCMay 13, 20:40 UTC45m
2026-05-13 OZN969 - May 13, 13:40 UTCMay 13, 15:55 UTC2h 15m
2026-05-12 OZN969 TMB → TMB May 12, 19:25 UTCMay 12, 20:25 UTC1h 0m
2026-05-12 OZN969 TMB → TMB May 12, 15:40 UTCMay 12, 16:45 UTC1h 5m
2026-05-12 OZN969 - May 12, 13:51 UTCMay 12, 14:35 UTC45m

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 N99885 page for operator, model, and routing details .

Mode-S ADF3E9 frequently asked

What is Mode-S code ADF3E9?
ADF3E9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N99885.
Where is Mode-S ADF3E9 registered?
Mode-S code ADF3E9 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 ADF3E9 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF3E9, octal 53371751, decimal 11,400,169.
What flights does ADF3E9 operate?
Mode-S ADF3E9 has broadcast 1 distinct callsign, including OZN969.