Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA94D0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N781FX · operated by FEDERAL EXPRESS CORP

Hex
AA94D0
Octal
52512320
Decimal
11,179,216
Country
US
Tail
N781FX
No current signal · last broadcast Jul 24, 17:35 UTC
Flights observed
167
Distinct callsigns
14
Country
US
Last broadcast
Jul 24, 17:35 UTC

Last known position

Most recent position reported by Mode-S AA94D0.

Country allocation

The ICAO 24-bit address AA94D0 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 14 distinct

Callsign Airline Flights Last seen
CFS8731 Empire Airlines 30 2026-07-24
CFS4731 Empire Airlines 30 2026-07-24
CFS7658 - 29 2026-06-17
CFS8658 - 19 2026-06-17
CFS7204 Empire Airlines 16 2026-07-22
CFS7255 - 9 2026-07-15
CFS4255 - 7 2026-07-13
CFS8737 Empire Airlines 5 2026-04-23
CFS7744 Empire Airlines 5 2026-04-23
CFS7804 Empire Airlines 4 2026-04-21
CFS4804 Empire Airlines 4 2026-04-21
CFS408 Empire Airlines 4 2026-05-30
CFS4204 Empire Airlines 3 2026-07-20
CFS8204 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CFS4731 ACV → RDD Jul 24, 16:50 UTCJul 24, 17:35 UTC45m
2026-07-24 CFS8731 SMF → ACV Jul 24, 14:45 UTCJul 24, 15:30 UTC45m
2026-07-23 CFS4731 ACV → RDD Jul 23, 17:00 UTCJul 23, 17:40 UTC40m
2026-07-23 CFS8731 SMF → ACV Jul 23, 14:50 UTCJul 23, 15:35 UTC45m
2026-07-22 CFS7204 RDD → SMF Jul 22, 23:30 UTCJul 23, 00:10 UTC40m
2026-07-22 CFS4731 ACV → RDD Jul 22, 21:35 UTCJul 22, 21:50 UTC15m
2026-07-22 CFS8731 SMF → ACV Jul 22, 16:15 UTCJul 22, 16:55 UTC40m
2026-07-21 CFS7204 RDD → SMF Jul 21, 23:15 UTCJul 21, 23:55 UTC40m
2026-07-21 CFS4731 - Jul 21, 21:40 UTCJul 21, 22:00 UTC20m
2026-07-21 CFS8731 - Jul 21, 16:00 UTCJul 21, 16:35 UTC35m
2026-07-20 CFS7204 RDD → SMF Jul 20, 23:20 UTCJul 21, 00:00 UTC39m
2026-07-20 CFS4204 SMF → RDD Jul 20, 21:00 UTCJul 20, 21:35 UTC35m
2026-07-17 CFS4731 - Jul 17, 16:44 UTCJul 17, 17:25 UTC40m
2026-07-17 CFS8731 - Jul 17, 14:35 UTCJul 17, 15:10 UTC35m
2026-07-16 CFS4731 - Jul 16, 17:30 UTCJul 16, 18:15 UTC45m
2026-07-16 CFS8731 - Jul 16, 15:30 UTCJul 16, 16:09 UTC40m
2026-07-15 CFS7204 - Jul 15, 23:25 UTCJul 16, 00:00 UTC35m
2026-07-15 CFS4731 - Jul 15, 21:35 UTCJul 15, 21:50 UTC15m
2026-07-15 CFS8731 - Jul 15, 16:00 UTCJul 15, 16:45 UTC45m
2026-07-15 CFS7255 RDD → SMF Jul 15, 01:25 UTCJul 15, 02:00 UTC35m
2026-07-14 CFS8204 SMF → RDD Jul 14, 15:35 UTCJul 14, 16:10 UTC35m
2026-07-14 CFS7255 RDD → SMF Jul 14, 01:20 UTCJul 14, 02:00 UTC40m
2026-07-13 CFS4255 SMF → RDD Jul 13, 22:05 UTCJul 13, 22:45 UTC40m
2026-07-11 CFS4204 - Jul 11, 17:25 UTCJul 11, 18:05 UTC40m
2026-07-11 CFS8204 SMF → RDD Jul 11, 16:00 UTCJul 11, 16:35 UTC35m
2026-07-10 CFS4731 - Jul 10, 18:00 UTCJul 10, 18:40 UTC40m
2026-07-10 CFS8731 - Jul 10, 15:50 UTCJul 10, 16:25 UTC35m
2026-07-09 CFS4731 - Jul 9, 19:35 UTCJul 9, 20:15 UTC40m
2026-07-09 CFS8731 - Jul 9, 16:50 UTCJul 9, 17:25 UTC35m
2026-07-08 CFS7204 RDD → SMF Jul 8, 23:35 UTCJul 9, 00:10 UTC35m
2026-07-08 CFS4731 - Jul 8, 21:20 UTCJul 8, 21:40 UTC20m
2026-07-08 CFS8731 - Jul 8, 16:15 UTCJul 8, 17:00 UTC45m
2026-07-07 CFS7204 RDD → SMF Jul 7, 23:25 UTCJul 8, 00:00 UTC35m
2026-07-07 CFS4731 - Jul 7, 21:40 UTCJul 7, 21:55 UTC15m
2026-07-07 CFS8731 - Jul 7, 15:45 UTCJul 7, 16:25 UTC40m
2026-07-07 CFS7255 RDD → SMF Jul 7, 01:25 UTCJul 7, 02:00 UTC35m
2026-07-06 CFS4255 SMF → RDD Jul 6, 22:50 UTCJul 6, 23:25 UTC35m
2026-07-03 CFS4731 - Jul 3, 17:10 UTCJul 3, 17:50 UTC40m
2026-07-03 CFS8731 - Jul 3, 15:05 UTCJul 3, 15:50 UTC45m
2026-07-02 CFS4731 - Jul 2, 17:20 UTCJul 2, 18:00 UTC40m
2026-07-02 CFS8731 - Jul 2, 15:20 UTCJul 2, 16:05 UTC45m
2026-07-01 CFS7204 RDD → SMF Jul 1, 23:25 UTCJul 2, 00:00 UTC35m
2026-07-01 CFS4731 - Jul 1, 21:30 UTCJul 1, 21:45 UTC15m
2026-07-01 CFS8731 - Jul 1, 16:05 UTCJul 1, 16:50 UTC45m
2026-06-30 CFS7204 RDD → SMF Jun 30, 23:15 UTCJun 30, 23:55 UTC40m
2026-06-30 CFS4731 - Jun 30, 21:35 UTCJun 30, 21:55 UTC20m
2026-06-30 CFS8731 - Jun 30, 15:45 UTCJun 30, 16:30 UTC45m
2026-06-30 CFS7255 RDD → SMF Jun 30, 01:14 UTCJun 30, 01:55 UTC41m
2026-06-29 CFS4255 SMF → RDD Jun 29, 23:05 UTCJun 29, 23:39 UTC35m
2026-06-26 CFS4731 - Jun 26, 17:35 UTCJun 26, 18:15 UTC40m

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 N781FX page for operator, model, and routing details .

Mode-S AA94D0 frequently asked

What is Mode-S code AA94D0?
AA94D0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N781FX.
Where is Mode-S AA94D0 registered?
Mode-S code AA94D0 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 AA94D0 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 17:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA94D0, octal 52512320, decimal 11,179,216.
What flights does AA94D0 operate?
Mode-S AA94D0 has broadcast 14 distinct callsigns, including CFS8731, CFS4731, CFS7658, CFS8658, CFS7204.