Apparatus

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sensors Mode-S transponder

AC912E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N909FX · ATR-42-300 · operated by FEDERAL EXPRESS CORP

Hex
AC912E
Octal
53110456
Decimal
11,309,358
Country
US
Tail
N909FX
Type
AT43
No current signal · last broadcast 27d ago
Flights observed
104
Distinct callsigns
8
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S AC912E.

Country allocation

The ICAO 24-bit address AC912E 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 8 distinct

Callsign Airline Flights Last seen
MTN8385 - 56 2026-07-24
MTN7519 - 27 2026-07-24
MTN8909 - 6 2026-05-14
MTN8508 - 4 2026-05-02
MTN7508 - 4 2026-05-01
N909FX - 3 2026-04-15
MTN7915 - 2 2026-06-26
MTN7909 - 2 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 MTN8385 - Jul 24, 09:35 UTCJul 24, 10:10 UTC35m
2026-07-24 MTN8385 MEM → TLH Jul 24, 06:55 UTCJul 24, 08:45 UTC1h 50m
2026-07-24 MTN7519 - Jul 24, 01:20 UTCJul 24, 02:45 UTC1h 25m
2026-07-23 MTN8385 - Jul 23, 09:35 UTCJul 23, 10:10 UTC35m
2026-07-23 MTN8385 - Jul 23, 07:00 UTCJul 23, 08:45 UTC1h 45m
2026-07-23 MTN7519 - Jul 23, 02:45 UTCJul 23, 04:15 UTC1h 30m
2026-07-22 MTN8385 - Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-22 MTN7519 - Jul 22, 03:15 UTCJul 22, 04:45 UTC1h 30m
2026-07-21 MTN8385 - Jul 21, 10:20 UTCJul 21, 10:55 UTC35m
2026-07-21 MTN8385 - Jul 21, 07:20 UTCJul 21, 09:10 UTC1h 50m
2026-07-21 MTN7519 - Jul 21, 01:50 UTCJul 21, 03:15 UTC1h 25m
2026-07-17 MTN8385 - Jul 17, 09:30 UTCJul 17, 10:15 UTC45m
2026-07-17 MTN8385 - Jul 17, 06:54 UTCJul 17, 08:40 UTC1h 45m
2026-07-17 MTN7519 CSG → MEM Jul 17, 01:39 UTCJul 17, 03:10 UTC1h 30m
2026-07-16 MTN8385 - Jul 16, 09:40 UTCJul 16, 10:20 UTC40m
2026-07-16 MTN8385 - Jul 16, 07:00 UTCJul 16, 08:40 UTC1h 40m
2026-07-16 MTN7519 - Jul 16, 01:35 UTCJul 16, 02:50 UTC1h 15m
2026-07-15 MTN8385 - Jul 15, 09:45 UTCJul 15, 10:25 UTC40m
2026-07-15 MTN8385 - Jul 15, 06:40 UTCJul 15, 08:25 UTC1h 45m
2026-07-15 MTN7519 - Jul 15, 02:05 UTCJul 15, 03:25 UTC1h 20m
2026-07-14 MTN8385 - Jul 14, 09:20 UTCJul 14, 10:00 UTC40m
2026-07-14 MTN8385 - Jul 14, 06:40 UTCJul 14, 08:25 UTC1h 45m
2026-07-14 MTN7519 - Jul 14, 01:35 UTCJul 14, 02:20 UTC45m
2026-07-10 MTN8385 - Jul 10, 09:50 UTCJul 10, 10:25 UTC35m
2026-07-10 MTN8385 - Jul 10, 06:55 UTCJul 10, 08:35 UTC1h 40m
2026-07-10 MTN7519 - Jul 10, 01:55 UTCJul 10, 03:15 UTC1h 20m
2026-07-09 MTN8385 - Jul 9, 09:25 UTCJul 9, 10:10 UTC45m
2026-07-09 MTN8385 - Jul 9, 06:40 UTCJul 9, 08:25 UTC1h 45m
2026-07-09 MTN7519 - Jul 9, 02:05 UTCJul 9, 03:40 UTC1h 35m
2026-07-08 MTN8385 - Jul 8, 09:40 UTCJul 8, 10:15 UTC35m
2026-07-08 MTN8385 - Jul 8, 06:40 UTCJul 8, 08:20 UTC1h 40m
2026-07-08 MTN7519 - Jul 8, 02:00 UTCJul 8, 03:25 UTC1h 25m
2026-07-07 MTN7909 - Jul 7, 23:50 UTCJul 8, 00:35 UTC45m
2026-07-07 MTN8385 - Jul 7, 07:00 UTCJul 7, 08:40 UTC1h 40m
2026-07-07 MTN7519 - Jul 7, 01:40 UTCJul 7, 03:00 UTC1h 20m
2026-07-03 MTN8385 - Jul 3, 09:40 UTCJul 3, 10:15 UTC35m
2026-07-03 MTN8385 - Jul 3, 06:55 UTCJul 3, 08:45 UTC1h 50m
2026-07-02 MTN7519 - Jul 2, 01:30 UTCJul 2, 02:45 UTC1h 15m
2026-07-01 MTN8385 - Jul 1, 09:40 UTCJul 1, 10:20 UTC40m
2026-07-01 MTN8385 - Jul 1, 06:50 UTCJul 1, 08:45 UTC1h 55m
2026-07-01 MTN7519 - Jul 1, 01:40 UTCJul 1, 03:00 UTC1h 20m
2026-06-30 MTN8385 - Jun 30, 10:10 UTCJun 30, 10:45 UTC35m
2026-06-30 MTN8385 - Jun 30, 07:10 UTCJun 30, 09:00 UTC1h 50m
2026-06-30 MTN7519 - Jun 30, 02:00 UTCJun 30, 03:30 UTC1h 30m
2026-06-26 MTN8385 - Jun 26, 09:50 UTCJun 26, 10:25 UTC35m
2026-06-26 MTN8385 - Jun 26, 06:54 UTCJun 26, 08:34 UTC1h 40m
2026-06-26 MTN7915 - Jun 26, 01:50 UTCJun 26, 03:20 UTC1h 30m
2026-06-25 MTN8385 - Jun 25, 09:45 UTCJun 25, 10:25 UTC40m
2026-06-25 MTN8385 - Jun 25, 07:00 UTCJun 25, 08:34 UTC1h 35m
2026-06-25 MTN7915 - Jun 25, 03:24 UTCJun 25, 04:45 UTC1h 20m

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 N909FX page for operator, model, and routing details .

Mode-S AC912E frequently asked

What is Mode-S code AC912E?
AC912E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N909FX.
Where is Mode-S AC912E registered?
Mode-S code AC912E 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 AC912E broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC912E, octal 53110456, decimal 11,309,358.
What flights does AC912E operate?
Mode-S AC912E has broadcast 8 distinct callsigns, including MTN8385, MTN7519, MTN8909, MTN8508, MTN7508.