Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A9A7C4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N721FD · AIRBUS A-300-200 · operated by FEDERAL EXPRESS CORP

Hex
A9A7C4
Octal
52323704
Decimal
11,118,532
Country
US
Tail
N721FD
Type
A30B
No current signal · last broadcast 4h ago
Flights observed
118
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A9A7C4.

Country allocation

The ICAO 24-bit address A9A7C4 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
FDX1489 FedEx Express 5 2026-05-27
FDX1465 - 5 2026-07-10
FDX1473 FedEx Express 4 2026-05-29
FDX1289 FedEx Express 4 2026-05-28
FDX1206 FedEx Express 4 2026-06-02
FDX2639 FedEx Express 3 2026-06-16
FDX1703 FedEx Express 3 2026-06-11
FDX1685 - 3 2026-07-03
FDX1528 - 3 2026-07-09
FDX1435 FedEx Express 3 2026-05-22
FDX1418 - 3 2026-07-11
FDX137 FedEx Express 3 2026-05-07
FDX134 FedEx Express 3 2026-05-06
FDX1328 - 3 2026-07-10
FDX1286 - 3 2026-06-27
FDX1272 FedEx Express 3 2026-05-09
FDX1266 FedEx Express 3 2026-05-19
FDX1218 - 3 2026-07-14
FDX568 FedEx Express 2 2026-06-02
FDX1747 FedEx Express 2 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FDX1218 DTW → MEM Jul 14, 02:40 UTCJul 14, 04:05 UTC1h 25m
2026-07-11 FDX1418 - Jul 11, 09:20 UTCJul 11, 10:40 UTC1h 20m
2026-07-11 FDX2266 - Jul 11, 01:10 UTCJul 11, 02:55 UTC1h 45m
2026-07-10 FDX1465 - Jul 10, 08:25 UTCJul 10, 10:00 UTC1h 35m
2026-07-10 FDX1328 - Jul 10, 01:30 UTCJul 10, 03:25 UTC1h 55m
2026-07-09 FDX1528 - Jul 9, 09:00 UTCJul 9, 10:45 UTC1h 45m
2026-07-09 FDX1328 - Jul 9, 01:45 UTCJul 9, 03:45 UTC2h 0m
2026-07-08 FDX1528 - Jul 8, 08:50 UTCJul 8, 10:30 UTC1h 40m
2026-07-08 FDX1328 - Jul 8, 01:40 UTCJul 8, 03:40 UTC2h 0m
2026-07-07 FDX1528 - Jul 7, 09:35 UTCJul 7, 11:15 UTC1h 40m
2026-07-07 FDX1389 - Jul 7, 01:00 UTCJul 7, 04:30 UTC3h 30m
2026-07-06 FDX989 - Jul 6, 02:55 UTCJul 6, 06:40 UTC3h 45m
2026-07-04 FDX808 - Jul 4, 13:00 UTCJul 4, 16:35 UTC3h 35m
2026-07-03 FDX1709 - Jul 3, 08:20 UTCJul 3, 12:20 UTC4h 0m
2026-07-03 FDX1709 IND → PDX Jul 3, 08:15 UTCJul 3, 12:20 UTC4h 5m
2026-07-03 FDX1685 ATL → IND Jul 3, 02:25 UTCJul 3, 03:50 UTC1h 25m
2026-07-02 FDX1685 - Jul 2, 03:50 UTCJul 2, 04:45 UTC55m
2026-07-01 FDX2338 ORF → MEM Jul 1, 01:35 UTCJul 1, 03:10 UTC1h 35m
2026-06-30 FDX1433 - Jun 30, 09:40 UTCJun 30, 11:20 UTC1h 40m
2026-06-27 FDX1286 - Jun 27, 04:44 UTCJun 27, 04:59 UTC15m
2026-06-27 FDX1286 DFW → MEM Jun 27, 04:45 UTCJun 27, 05:51 UTC1h 6m
2026-06-27 FDX1286 - Jun 27, 02:35 UTCJun 27, 03:25 UTC50m
2026-06-26 FDX1459 - Jun 26, 09:35 UTCJun 26, 11:05 UTC1h 30m
2026-06-25 FDX1251 - Jun 25, 02:54 UTCJun 25, 04:04 UTC1h 10m
2026-06-24 FDX336 - Jun 24, 22:35 UTCJun 24, 23:50 UTC1h 15m
2026-06-24 FDX1285 TYS → MEM Jun 24, 02:51 UTCJun 24, 03:46 UTC55m
2026-06-24 FDX1746 - Jun 24, 00:40 UTCJun 24, 01:24 UTC45m
2026-06-23 FDX1685 LAX → IND Jun 23, 02:45 UTCJun 23, 04:35 UTC1h 50m
2026-06-17 FDX1747 IND → BDL Jun 17, 12:05 UTCJun 17, 12:45 UTC40m
2026-06-17 FDX1747 IND → BDL Jun 17, 08:50 UTCJun 17, 10:20 UTC1h 30m
2026-06-17 FDX2679 IAD → IND Jun 17, 03:15 UTCJun 17, 04:30 UTC1h 15m
2026-06-16 FDX1755 IND → IAD Jun 16, 08:49 UTCJun 16, 09:55 UTC1h 5m
2026-06-16 FDX2639 ORF → RIC Jun 16, 04:20 UTCJun 16, 05:00 UTC40m
2026-06-12 FDX1715 IND → BNA Jun 12, 10:00 UTCJun 12, 10:45 UTC45m
2026-06-12 FDX1605 OAK → IND Jun 12, 02:20 UTCJun 12, 04:55 UTC2h 35m
2026-06-11 FDX1703 IND → ATL Jun 11, 07:25 UTCJun 11, 08:30 UTC1h 5m
2026-06-11 FDX1703 IND → ATL Jun 11, 07:25 UTCJun 11, 08:25 UTC1h 0m
2026-06-11 FDX1605 OAK → IND Jun 11, 02:25 UTCJun 11, 03:25 UTC1h 0m
2026-06-10 FDX1703 IND → ATL Jun 10, 07:30 UTCJun 10, 08:30 UTC1h 0m
2026-06-10 FDX2639 ORF → RIC Jun 10, 04:05 UTCJun 10, 05:00 UTC55m
2026-06-10 FDX2639 ORF → RIC Jun 10, 04:02 UTCJun 10, 04:54 UTC52m
2026-06-09 FDX1715 IND → BNA Jun 9, 09:05 UTCJun 9, 09:45 UTC40m
2026-06-09 FDX1630 BWI → IND Jun 9, 02:45 UTCJun 9, 04:10 UTC1h 25m
2026-06-05 FDX1482 MEM → BWI Jun 5, 08:40 UTCJun 5, 10:20 UTC1h 40m
2026-06-05 FDX1482 MEM → BWI Jun 5, 08:35 UTCJun 5, 10:14 UTC1h 39m
2026-06-04 FDX1268 OAK → MEM Jun 4, 02:10 UTCJun 4, 05:55 UTC3h 45m
2026-06-02 FDX568 MEM → SEA Jun 2, 21:00 UTCJun 3, 00:40 UTC3h 40m
2026-06-02 FDX568 MEM → SEA Jun 2, 20:55 UTCJun 3, 00:39 UTC3h 44m
2026-06-02 FDX1206 BOS → MEM Jun 2, 00:35 UTCJun 2, 03:10 UTC2h 35m
2026-05-29 FDX1473 MEM → BOS May 29, 08:50 UTCMay 29, 11:10 UTC2h 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 N721FD page for operator, model, and routing details .

Mode-S A9A7C4 frequently asked

What is Mode-S code A9A7C4?
A9A7C4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N721FD.
Where is Mode-S A9A7C4 registered?
Mode-S code A9A7C4 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 A9A7C4 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9A7C4, octal 52323704, decimal 11,118,532.
What flights does A9A7C4 operate?
Mode-S A9A7C4 has broadcast 20 distinct callsigns, including FDX1489, FDX1465, FDX1473, FDX1289, FDX1206.