Apparatus

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sensors Mode-S transponder

ACF49D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N934AZ · operated by N934AZ

Hex
ACF49D
Octal
53172235
Decimal
11,334,813
Country
US
Tail
N934AZ
No current signal · last broadcast 14h ago
Flights observed
332
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S ACF49D.

Country allocation

The ICAO 24-bit address ACF49D 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
OZN934 - 332 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 OZN934 TMB → TMB Jul 17, 15:55 UTCJul 17, 16:34 UTC40m
2026-07-17 OZN934 - Jul 17, 13:45 UTCJul 17, 15:00 UTC1h 15m
2026-07-17 OZN934 TMB → TMB Jul 17, 11:30 UTCJul 17, 12:40 UTC1h 10m
2026-07-16 OZN934 TMB → TMB Jul 16, 15:30 UTCJul 16, 16:49 UTC1h 20m
2026-07-16 OZN934 TMB → TMB Jul 16, 13:45 UTCJul 16, 14:50 UTC1h 5m
2026-07-15 OZN934 - Jul 15, 18:30 UTCJul 15, 19:40 UTC1h 10m
2026-07-14 OZN934 - Jul 14, 22:30 UTCJul 14, 23:40 UTC1h 9m
2026-07-14 OZN934 - Jul 14, 17:50 UTCJul 14, 18:30 UTC40m
2026-07-14 OZN934 - Jul 14, 14:15 UTCJul 14, 14:55 UTC40m
2026-07-14 OZN934 - Jul 14, 13:40 UTCJul 14, 14:10 UTC30m
2026-07-14 OZN934 TMB → TMB Jul 14, 11:35 UTCJul 14, 12:45 UTC1h 10m
2026-07-14 OZN934 - Jul 14, 00:50 UTCJul 14, 02:05 UTC1h 15m
2026-07-13 OZN934 TMB → TMB Jul 13, 21:45 UTCJul 14, 00:10 UTC2h 25m
2026-07-13 OZN934 TMB → TMB Jul 13, 13:20 UTCJul 13, 14:40 UTC1h 20m
2026-07-13 OZN934 TMB → TMB Jul 13, 11:25 UTCJul 13, 12:15 UTC50m
2026-07-12 OZN934 TMB → TMB Jul 12, 21:45 UTCJul 12, 22:40 UTC55m
2026-07-12 OZN934 TMB → TMB Jul 12, 19:25 UTCJul 12, 20:35 UTC1h 10m
2026-07-12 OZN934 TMB → TMB Jul 12, 17:40 UTCJul 12, 18:40 UTC1h 0m
2026-07-12 OZN934 TMB → TMB Jul 12, 13:40 UTCJul 12, 14:40 UTC1h 0m
2026-07-11 OZN934 - Jul 11, 22:01 UTCJul 12, 00:35 UTC2h 35m
2026-07-11 OZN934 TMB → APF Jul 11, 19:50 UTCJul 11, 20:45 UTC55m
2026-07-11 OZN934 TMB → TMB Jul 11, 16:05 UTCJul 11, 16:55 UTC50m
2026-07-11 OZN934 - Jul 11, 11:30 UTCJul 11, 13:35 UTC2h 5m
2026-07-10 OZN934 TMB → TMB Jul 10, 19:30 UTCJul 10, 20:30 UTC1h 0m
2026-07-10 OZN934 TMB → TMB Jul 10, 15:50 UTCJul 10, 16:45 UTC55m
2026-07-10 OZN934 TMB → TMB Jul 10, 11:45 UTCJul 10, 14:10 UTC2h 25m
2026-07-09 OZN934 TMB → TMB Jul 9, 23:50 UTCJul 10, 01:35 UTC1h 45m
2026-07-09 OZN934 TMB → TMB Jul 9, 19:35 UTCJul 9, 20:45 UTC1h 10m
2026-07-09 OZN934 TMB → TMB Jul 9, 16:00 UTCJul 9, 16:45 UTC45m
2026-07-09 OZN934 - Jul 9, 13:50 UTCJul 9, 14:50 UTC1h 0m
2026-07-09 OZN934 TMB → TMB Jul 9, 11:35 UTCJul 9, 12:45 UTC1h 10m
2026-07-08 OZN934 - Jul 8, 19:40 UTCJul 8, 20:35 UTC55m
2026-07-08 OZN934 - Jul 8, 16:00 UTCJul 8, 18:05 UTC2h 5m
2026-07-08 OZN934 TMB → TMB Jul 8, 13:35 UTCJul 8, 14:45 UTC1h 10m
2026-07-07 OZN934 TMB → TMB Jul 7, 19:40 UTCJul 7, 20:30 UTC50m
2026-07-04 OZN934 TMB → TMB Jul 4, 11:40 UTCJul 4, 12:40 UTC1h 0m
2026-07-03 OZN934 - Jul 3, 15:40 UTCJul 3, 16:45 UTC1h 5m
2026-07-03 OZN934 TMB → TMB Jul 3, 13:30 UTCJul 3, 14:50 UTC1h 20m
2026-07-03 OZN934 TMB → TMB Jul 3, 11:40 UTCJul 3, 12:45 UTC1h 5m
2026-07-02 OZN934 TMB → TMB Jul 2, 21:40 UTCJul 2, 22:55 UTC1h 15m
2026-07-02 OZN934 TMB → TMB Jul 2, 13:45 UTCJul 2, 15:55 UTC2h 10m
2026-07-02 OZN934 TMB → TMB Jul 2, 12:30 UTCJul 2, 12:55 UTC25m
2026-07-02 OZN934 TMB → TMB Jul 2, 12:15 UTCJul 2, 12:25 UTC10m
2026-07-01 OZN934 TMB → TMB Jul 1, 23:45 UTCJul 2, 01:20 UTC1h 35m
2026-07-01 OZN934 - Jul 1, 21:30 UTCJul 1, 21:40 UTC10m
2026-07-01 OZN934 - Jul 1, 19:30 UTCJul 1, 20:10 UTC40m
2026-07-01 OZN934 - Jul 1, 15:55 UTCJul 1, 16:30 UTC35m
2026-07-01 OZN934 - Jul 1, 13:45 UTCJul 1, 14:25 UTC40m
2026-07-01 OZN934 TMB → TMB Jul 1, 11:30 UTCJul 1, 12:40 UTC1h 10m
2026-06-30 OZN934 - Jun 30, 18:00 UTCJun 30, 18:55 UTC55m

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 N934AZ page for operator, model, and routing details .

Mode-S ACF49D frequently asked

What is Mode-S code ACF49D?
ACF49D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N934AZ.
Where is Mode-S ACF49D registered?
Mode-S code ACF49D 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 ACF49D broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF49D, octal 53172235, decimal 11,334,813.
What flights does ACF49D operate?
Mode-S ACF49D has broadcast 1 distinct callsign, including OZN934.