Apparatus

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sensors Mode-S transponder

ADD324

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N990FD · BOEING 757-200 · operated by FEDERAL EXPRESS CORP

Hex
ADD324
Octal
53351444
Decimal
11,391,780
Country
US
Tail
N990FD
Type
B752
No current signal · last broadcast Jul 25, 10:40 UTC
Flights observed
123
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 10:40 UTC

Last known position

Most recent position reported by Mode-S ADD324.

Country allocation

The ICAO 24-bit address ADD324 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
FDX1757 - 6 2026-06-24
FDX1667 - 6 2026-06-18
FDX1640 FedEx Express 5 2026-05-21
FDX1254 FedEx Express 5 2026-07-25
FDX1767 - 4 2026-06-17
FDX1606 - 3 2026-06-17
FDX1498 FedEx Express 3 2026-05-15
FDX1442 FedEx Express 3 2026-06-06
FDX1323 FedEx Express 3 2026-07-23
FDX1058 FedEx Express 3 2026-06-04
FDX3705 FedEx Express 2 2026-05-26
FDX1780 FedEx Express 2 2026-05-08
FDX1727 - 2 2026-06-25
FDX1714 - 2 2026-06-26
FDX1702 - 2 2026-06-18
FDX1662 - 2 2026-06-26
FDX1661 FedEx Express 2 2026-05-01
FDX1582 FedEx Express 2 2026-05-13
FDX1578 FedEx Express 2 2026-07-25
FDX1562 FedEx Express 2 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1578 MEM → BUF Jul 25, 08:55 UTCJul 25, 10:40 UTC1h 45m
2026-07-25 FDX1578 MEM → BUF Jul 25, 08:52 UTCJul 25, 10:36 UTC1h 44m
2026-07-25 FDX1254 PVD → MEM Jul 25, 01:55 UTCJul 25, 04:15 UTC2h 20m
2026-07-25 FDX1254 PVD → MEM Jul 25, 01:55 UTCJul 25, 04:14 UTC2h 19m
2026-07-25 FDX1254 PVD → MEM Jul 25, 00:40 UTCJul 25, 00:55 UTC15m
2026-07-24 FDX1454 MEM → PVD Jul 24, 08:25 UTCJul 24, 10:35 UTC2h 10m
2026-07-24 FDX1305 ICT → MEM Jul 24, 03:25 UTCJul 24, 04:25 UTC1h 0m
2026-07-23 FDX1559 MEM → ICT Jul 23, 08:35 UTCJul 23, 09:00 UTC25m
2026-07-23 FDX1559 MEM → ICT Jul 23, 07:20 UTCJul 23, 08:05 UTC45m
2026-07-23 FDX1323 DAY → MEM Jul 23, 03:10 UTCJul 23, 04:20 UTC1h 10m
2026-07-23 FDX1323 DAY → MEM Jul 23, 03:08 UTCJul 23, 04:20 UTC1h 12m
2026-07-22 FDX1474 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 FDX1254 PVD → MEM Jul 22, 03:25 UTCJul 22, 04:45 UTC1h 20m
2026-07-22 FDX1254 PVD → MEM Jul 22, 00:55 UTCJul 22, 02:35 UTC1h 40m
2026-07-21 FDX1454 - Jul 21, 09:05 UTCJul 21, 11:25 UTC2h 20m
2026-07-21 FDX1211 DSM → MEM Jul 21, 03:45 UTCJul 21, 04:55 UTC1h 10m
2026-07-18 FDX1500 - Jul 18, 11:25 UTCJul 18, 11:45 UTC20m
2026-07-18 FDX1500 - Jul 18, 09:15 UTCJul 18, 10:20 UTC1h 5m
2026-07-18 FDX1347 - Jul 18, 01:50 UTCJul 18, 04:00 UTC2h 11m
2026-07-17 FDX1570 - Jul 17, 08:30 UTCJul 17, 10:35 UTC2h 5m
2026-07-17 FDX1231 - Jul 17, 02:05 UTCJul 17, 03:55 UTC1h 50m
2026-07-16 FDX1544 - Jul 16, 09:30 UTCJul 16, 11:15 UTC1h 45m
2026-07-15 FDX1332 - Jul 15, 02:20 UTCJul 15, 04:50 UTC2h 30m
2026-07-14 FDX1487 - Jul 14, 09:35 UTCJul 14, 11:15 UTC1h 40m
2026-07-14 FDX1487 MEM → COS Jul 14, 09:31 UTCJul 14, 11:15 UTC1h 44m
2026-07-12 FDX9040 - Jul 12, 18:40 UTCJul 12, 19:30 UTC50m
2026-06-29 FDX9042 - Jun 29, 14:09 UTCJun 29, 14:54 UTC45m
2026-06-27 FDX1558 - Jun 27, 11:55 UTCJun 27, 13:15 UTC1h 20m
2026-06-27 FDX1558 - Jun 27, 09:34 UTCJun 27, 10:45 UTC1h 10m
2026-06-27 FDX1269 - Jun 27, 01:54 UTCJun 27, 03:25 UTC1h 30m
2026-06-26 FDX1714 - Jun 26, 09:24 UTCJun 26, 10:05 UTC40m
2026-06-26 FDX1714 IND → FNT Jun 26, 09:21 UTCJun 26, 10:00 UTC39m
2026-06-26 FDX1662 - Jun 26, 02:50 UTCJun 26, 04:24 UTC1h 35m
2026-06-25 FDX1727 - Jun 25, 08:04 UTCJun 25, 09:29 UTC1h 25m
2026-06-25 FDX2640 BNA → IND Jun 25, 02:49 UTCJun 25, 03:34 UTC45m
2026-06-24 FDX1757 - Jun 24, 11:14 UTCJun 24, 12:20 UTC1h 5m
2026-06-24 FDX1757 IND → MSY Jun 24, 08:35 UTCJun 24, 10:04 UTC1h 30m
2026-06-19 FDX1643 - Jun 19, 03:09 UTCJun 19, 03:49 UTC40m
2026-06-18 FDX1702 - Jun 18, 09:35 UTCJun 18, 10:20 UTC45m
2026-06-18 FDX1702 IND → GRR Jun 18, 09:31 UTCJun 18, 10:09 UTC38m
2026-06-18 FDX1667 - Jun 18, 02:40 UTCJun 18, 04:25 UTC1h 45m
2026-06-18 FDX1667 - Jun 18, 00:20 UTCJun 18, 00:50 UTC30m
2026-06-17 FDX1767 - Jun 17, 11:15 UTCJun 17, 11:45 UTC30m
2026-06-17 FDX1767 - Jun 17, 08:30 UTCJun 17, 09:40 UTC1h 10m
2026-06-17 FDX1606 - Jun 17, 02:35 UTCJun 17, 03:15 UTC40m
2026-06-17 FDX1606 FNT → IND Jun 17, 02:33 UTCJun 17, 03:15 UTC42m
2026-06-16 FDX1469 - Jun 16, 08:55 UTCJun 16, 10:20 UTC1h 25m
2026-06-16 FDX1232 CLT → MEM Jun 16, 02:20 UTCJun 16, 04:45 UTC2h 25m
2026-06-14 FDX981 MEM → LAX Jun 14, 23:50 UTCJun 15, 01:55 UTC2h 5m
2026-06-13 FDX1381 TPA → MEM Jun 13, 04:10 UTCJun 13, 06:15 UTC2h 5m

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 N990FD page for operator, model, and routing details .

Mode-S ADD324 frequently asked

What is Mode-S code ADD324?
ADD324 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N990FD.
Where is Mode-S ADD324 registered?
Mode-S code ADD324 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 ADD324 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 10:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADD324, octal 53351444, decimal 11,391,780.
What flights does ADD324 operate?
Mode-S ADD324 has broadcast 20 distinct callsigns, including FDX1757, FDX1667, FDX1640, FDX1254, FDX1767.