Apparatus

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sensors Mode-S transponder

A9C1C5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N728FD · AIRBUS A-300-200 · operated by FEDERAL EXPRESS CORPORATION

Hex
A9C1C5
Octal
52340705
Decimal
11,125,189
Country
US
Tail
N728FD
Type
A30B
Transponder active on ground
Flights observed
127
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 12:05 UTC

Last known position

Most recent position reported by Mode-S A9C1C5.

Country allocation

The ICAO 24-bit address A9C1C5 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
FDX1433 FedEx Express 9 2026-07-25
FDX1564 - 7 2026-07-01
FDX1583 - 5 2026-07-02
FDX1330 - 5 2026-07-16
FDX2266 FedEx Express 4 2026-07-25
FDX1465 FedEx Express 4 2026-07-24
FDX134 FedEx Express 4 2026-07-22
FDX1334 - 4 2026-07-03
FDX1257 FedEx Express 4 2026-07-24
FDX2338 FedEx Express 3 2026-06-23
FDX1479 - 3 2026-07-23
FDX1478 - 3 2026-07-15
FDX137 FedEx Express 3 2026-07-23
FDX1345 FedEx Express 3 2026-04-16
FDX1318 FedEx Express 3 2026-05-16
FDX1303 - 3 2026-07-02
FDX1218 - 3 2026-07-18
FDX988 FedEx Express 2 2026-06-10
FDX819 FedEx Express 2 2026-04-14
FDX336 FedEx Express 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1433 MEM → RDU Jul 25, 11:35 UTCJul 25, 12:00 UTC25m
2026-07-25 FDX1433 MEM → RDU Jul 25, 11:31 UTCJul 25, 11:59 UTC28m
2026-07-25 FDX1433 MEM → RDU Jul 25, 09:10 UTCJul 25, 10:40 UTC1h 30m
2026-07-25 FDX2266 RSW → MEM Jul 25, 01:15 UTCJul 25, 03:00 UTC1h 45m
2026-07-24 FDX1465 MEM → RSW Jul 24, 08:30 UTCJul 24, 10:10 UTC1h 40m
2026-07-24 FDX1257 RSW → MEM Jul 24, 03:15 UTCJul 24, 03:50 UTC35m
2026-07-23 FDX1479 - Jul 23, 09:30 UTCJul 23, 10:05 UTC35m
2026-07-23 FDX137 YWG → MEM Jul 23, 00:55 UTCJul 23, 03:00 UTC2h 5m
2026-07-22 FDX134 MEM → YWG Jul 22, 11:10 UTCJul 22, 13:10 UTC2h 0m
2026-07-22 FDX1272 OKC → MEM Jul 22, 02:40 UTCJul 22, 03:50 UTC1h 10m
2026-07-21 FDX1472 - Jul 21, 10:00 UTCJul 21, 11:00 UTC1h 0m
2026-07-18 FDX1218 - Jul 18, 02:35 UTCJul 18, 03:55 UTC1h 21m
2026-07-17 FDX1579 MEM → STL Jul 17, 07:50 UTCJul 17, 09:10 UTC1h 20m
2026-07-17 FDX1579 MEM → STL Jul 17, 07:47 UTCJul 17, 09:12 UTC1h 25m
2026-07-17 FDX1286 - Jul 17, 02:45 UTCJul 17, 04:25 UTC1h 40m
2026-07-17 FDX1286 LBB → MEM Jul 17, 02:43 UTCJul 17, 04:22 UTC1h 39m
2026-07-16 FDX1459 - Jul 16, 08:50 UTCJul 16, 10:10 UTC1h 20m
2026-07-16 FDX1330 - Jul 16, 02:10 UTCJul 16, 03:25 UTC1h 15m
2026-07-16 FDX1330 MSN → MEM Jul 16, 02:07 UTCJul 16, 03:24 UTC1h 17m
2026-07-15 FDX1478 - Jul 15, 09:15 UTCJul 15, 10:25 UTC1h 10m
2026-07-15 FDX121 - Jul 15, 00:00 UTCJul 15, 03:25 UTC3h 25m
2026-07-14 FDX120 - Jul 14, 09:55 UTCJul 14, 13:25 UTC3h 30m
2026-07-14 FDX1322 - Jul 14, 03:20 UTCJul 14, 04:40 UTC1h 20m
2026-07-10 FDX1536 - Jul 10, 08:25 UTCJul 10, 09:45 UTC1h 20m
2026-07-10 FDX2266 - Jul 10, 01:15 UTCJul 10, 03:00 UTC1h 45m
2026-07-09 FDX1465 - Jul 9, 08:35 UTCJul 9, 10:15 UTC1h 40m
2026-07-09 FDX1465 MEM → RSW Jul 9, 08:30 UTCJul 9, 10:10 UTC1h 40m
2026-07-09 FDX1257 - Jul 9, 03:40 UTCJul 9, 04:30 UTC50m
2026-07-08 FDX1479 - Jul 8, 09:20 UTCJul 8, 10:00 UTC40m
2026-07-08 FDX2237 - Jul 8, 03:40 UTCJul 8, 04:55 UTC1h 15m
2026-07-07 FDX1486 - Jul 7, 09:40 UTCJul 7, 10:40 UTC1h 0m
2026-07-07 FDX1257 - Jul 7, 03:35 UTCJul 7, 04:20 UTC45m
2026-07-07 FDX1257 SHV → MEM Jul 7, 03:30 UTCJul 7, 04:16 UTC46m
2026-07-03 FDX1479 - Jul 3, 09:15 UTCJul 3, 09:55 UTC40m
2026-07-03 FDX1334 - Jul 3, 02:10 UTCJul 3, 05:45 UTC3h 35m
2026-07-02 FDX1583 - Jul 2, 12:40 UTCJul 2, 12:55 UTC15m
2026-07-02 FDX1583 - Jul 2, 10:50 UTCJul 2, 12:05 UTC1h 15m
2026-07-02 FDX1303 - Jul 2, 02:25 UTCJul 2, 04:15 UTC1h 50m
2026-07-01 FDX1564 - Jul 1, 12:00 UTCJul 1, 12:35 UTC35m
2026-07-01 FDX1564 - Jul 1, 08:45 UTCJul 1, 10:50 UTC2h 5m
2026-07-01 FDX1334 ABQ → MEM Jul 1, 03:55 UTCJul 1, 05:55 UTC2h 0m
2026-06-30 FDX1583 - Jun 30, 11:15 UTCJun 30, 13:15 UTC2h 0m
2026-06-30 FDX2266 RSW → MEM Jun 30, 01:35 UTCJun 30, 03:21 UTC1h 46m
2026-06-30 FDX2266 RSW → MEM Jun 30, 01:35 UTCJun 30, 03:20 UTC1h 45m
2026-06-27 FDX1465 - Jun 27, 09:09 UTCJun 27, 10:40 UTC1h 30m
2026-06-24 FDX1330 - Jun 24, 02:24 UTCJun 24, 03:35 UTC1h 10m
2026-06-23 FDX1478 - Jun 23, 09:24 UTCJun 23, 10:39 UTC1h 15m
2026-06-23 FDX2338 ORF → MEM Jun 23, 02:04 UTCJun 23, 03:49 UTC1h 45m
2026-06-20 FDX1433 - Jun 20, 11:54 UTCJun 20, 12:24 UTC30m
2026-06-20 FDX1433 - Jun 20, 09:34 UTCJun 20, 10:59 UTC1h 25m

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 N728FD page for operator, model, and routing details .

Mode-S A9C1C5 frequently asked

What is Mode-S code A9C1C5?
A9C1C5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N728FD.
Where is Mode-S A9C1C5 registered?
Mode-S code A9C1C5 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 A9C1C5 broadcasting right now?
Mode-S A9C1C5 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9C1C5, octal 52340705, decimal 11,125,189.
What flights does A9C1C5 operate?
Mode-S A9C1C5 has broadcast 20 distinct callsigns, including FDX1433, FDX1564, FDX1583, FDX1330, FDX2266.