Apparatus

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sensors Mode-S transponder

AD4404

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N954FD · BOEING 757-200 · operated by FEDERAL EXPRESS CORP

Hex
AD4404
Octal
53242004
Decimal
11,355,140
Country
US
Tail
N954FD
Type
B752
No current signal · last broadcast 2h ago
Flights observed
102
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AD4404.

Country allocation

The ICAO 24-bit address AD4404 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 20 distinct

Callsign Airline Flights Last seen
FDX1926 - 8 2026-07-14
FDX1989 - 7 2026-07-10
FDX1073 - 7 2026-07-02
FDX1254 - 6 2026-06-17
FDX1058 - 6 2026-07-02
FDX1454 - 5 2026-06-16
FDX1901 - 3 2026-06-18
FDX1540 - 3 2026-06-17
FDX1521 FedEx Express 3 2026-06-11
FDX1339 FedEx Express 3 2026-05-02
FDX1316 FedEx Express 3 2026-05-16
FDX1232 FedEx Express 3 2026-06-09
FDX1123 - 3 2026-07-01
FDX1040 - 3 2026-06-30
FDX1950 FedEx Express 2 2026-05-28
FDX1767 FedEx Express 2 2026-05-15
FDX1757 FedEx Express 2 2026-05-22
FDX1727 FedEx Express 2 2026-05-13
FDX1662 FedEx Express 2 2026-05-14
FDX1457 FedEx Express 2 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FDX1926 BOS → EWR Jul 14, 02:45 UTCJul 14, 03:20 UTC35m
2026-07-10 FDX1989 EWR → BOS Jul 10, 08:00 UTCJul 10, 08:30 UTC30m
2026-07-10 FDX1926 BOS → EWR Jul 10, 02:45 UTCJul 10, 03:40 UTC55m
2026-07-10 FDX1926 BOS → EWR Jul 10, 02:45 UTCJul 10, 03:30 UTC45m
2026-07-09 FDX1989 EWR → BNH Jul 9, 07:50 UTCJul 9, 08:25 UTC35m
2026-07-09 FDX1926 BOS → EWR Jul 9, 02:35 UTCJul 9, 03:20 UTC45m
2026-07-08 FDX1989 EWR → BOS Jul 8, 08:00 UTCJul 8, 08:30 UTC30m
2026-07-08 FDX1989 EWR → BOS Jul 8, 07:55 UTCJul 8, 08:33 UTC38m
2026-07-08 FDX1926 BOS → EWR Jul 8, 02:50 UTCJul 8, 03:40 UTC50m
2026-07-08 FDX1926 BOS → EWR Jul 8, 02:46 UTCJul 8, 03:33 UTC47m
2026-07-07 FDX1989 EWR → BOS Jul 7, 08:10 UTCJul 7, 08:40 UTC30m
2026-07-02 FDX1073 - Jul 2, 08:35 UTCJul 2, 09:35 UTC1h 0m
2026-07-02 FDX1058 - Jul 2, 04:30 UTCJul 2, 06:30 UTC2h 0m
2026-07-02 FDX1058 - Jul 2, 02:20 UTCJul 2, 02:35 UTC15m
2026-07-01 FDX1123 EWR → AFW Jul 1, 03:35 UTCJul 1, 06:25 UTC2h 50m
2026-07-01 FDX1123 EWR → AFW Jul 1, 03:33 UTCJul 1, 06:26 UTC2h 53m
2026-06-30 FDX1073 - Jun 30, 09:00 UTCJun 30, 10:05 UTC1h 5m
2026-06-30 FDX1073 GSO → EWR Jun 30, 08:55 UTCJun 30, 10:07 UTC1h 12m
2026-06-30 FDX1040 - Jun 30, 02:55 UTCJun 30, 03:45 UTC50m
2026-06-26 FDX1926 - Jun 26, 02:34 UTCJun 26, 03:15 UTC40m
2026-06-25 FDX1989 EWR → BOS Jun 25, 08:09 UTCJun 25, 08:45 UTC35m
2026-06-24 FDX1073 - Jun 24, 08:09 UTCJun 24, 09:09 UTC1h 0m
2026-06-24 FDX1073 GSO → EWR Jun 24, 08:05 UTCJun 24, 09:06 UTC1h 1m
2026-06-24 FDX1058 - Jun 24, 04:20 UTCJun 24, 06:20 UTC2h 0m
2026-06-24 FDX1058 - Jun 24, 02:49 UTCJun 24, 03:04 UTC15m
2026-06-23 FDX1123 - Jun 23, 03:45 UTCJun 23, 06:44 UTC3h 0m
2026-06-18 FDX1901 IAD → EWR Jun 18, 03:19 UTCJun 18, 04:00 UTC41m
2026-06-18 FDX1901 IAD → EWR Jun 18, 03:20 UTCJun 18, 04:05 UTC45m
2026-06-17 FDX1540 - Jun 17, 08:35 UTCJun 17, 10:00 UTC1h 25m
2026-06-17 FDX1540 MEM → IAD Jun 17, 08:33 UTCJun 17, 10:02 UTC1h 29m
2026-06-17 FDX1254 - Jun 17, 04:15 UTCJun 17, 05:25 UTC1h 10m
2026-06-17 FDX1254 - Jun 17, 01:50 UTCJun 17, 03:20 UTC1h 30m
2026-06-16 FDX1454 - Jun 16, 08:44 UTCJun 16, 10:40 UTC1h 55m
2026-06-16 FDX1454 MEM → PVD Jun 16, 08:39 UTCJun 16, 10:37 UTC1h 58m
2026-06-16 FDX2349 TLH → MEM Jun 16, 03:00 UTCJun 16, 04:00 UTC1h 0m
2026-06-13 FDX1481 MEM → TLH Jun 13, 09:20 UTCJun 13, 10:15 UTC55m
2026-06-13 FDX1270 - Jun 13, 03:45 UTCJun 13, 04:35 UTC49m
2026-06-12 FDX1441 MEM → LFT Jun 12, 09:35 UTCJun 12, 10:15 UTC40m
2026-06-12 FDX1441 MEM → LFT Jun 12, 09:29 UTCJun 12, 10:20 UTC51m
2026-06-12 FDX1321 EWR → MEM Jun 12, 02:25 UTCJun 12, 03:55 UTC1h 30m
2026-06-11 FDX1521 MEM → FSD Jun 11, 11:30 UTCJun 11, 13:05 UTC1h 35m
2026-06-11 FDX1254 PVD → MEM Jun 11, 03:30 UTCJun 11, 04:40 UTC1h 10m
2026-06-11 FDX1254 PVD → MEM Jun 11, 00:55 UTCJun 11, 02:35 UTC1h 40m
2026-06-10 FDX1454 MEM → PVD Jun 10, 09:00 UTCJun 10, 11:10 UTC2h 10m
2026-06-10 FDX1332 COS → MEM Jun 10, 03:15 UTCJun 10, 05:00 UTC1h 45m
2026-06-09 FDX1487 MEM → COS Jun 9, 09:25 UTCJun 9, 11:20 UTC1h 55m
2026-06-09 FDX1232 CLT → MEM Jun 9, 02:20 UTCJun 9, 04:25 UTC2h 5m
2026-06-09 FDX1232 CLT → MEM Jun 9, 02:15 UTCJun 9, 04:15 UTC2h 0m
2026-06-05 FDX1073 GSO → EWR Jun 5, 08:10 UTCJun 5, 09:15 UTC1h 5m
2026-06-05 FDX1040 EWR → GSO Jun 5, 03:00 UTCJun 5, 03:55 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 N954FD page for operator, model, and routing details .

Mode-S AD4404 frequently asked

What is Mode-S code AD4404?
AD4404 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N954FD.
Where is Mode-S AD4404 registered?
Mode-S code AD4404 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 AD4404 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 AD4404, octal 53242004, decimal 11,355,140.
What flights does AD4404 operate?
Mode-S AD4404 has broadcast 20 distinct callsigns, including FDX1926, FDX1989, FDX1073, FDX1254, FDX1058.