Apparatus

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sensors Mode-S transponder

A8AAF4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N658FE · AIRBUS A-300-600 · operated by FEDERAL EXPRESS CORP

Hex
A8AAF4
Octal
52125364
Decimal
11,053,812
Country
US
Tail
N658FE
Type
A306
No current signal · last broadcast 3h ago
Flights observed
72
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A8AAF4.

Country allocation

The ICAO 24-bit address A8AAF4 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
FDX1486 FedEx Express 5 2026-05-28
FDX1237 FedEx Express 4 2026-05-29
FDX1583 FedEx Express 3 2026-05-27
FDX1500 FedEx Express 3 2026-05-23
FDX1334 FedEx Express 3 2026-05-28
FDX533 FedEx Express 2 2026-05-11
FDX1715 FedEx Express 2 2026-05-01
FDX1682 FedEx Express 2 2026-05-06
FDX1564 FedEx Express 2 2026-05-14
FDX1536 FedEx Express 2 2026-04-23
FDX1528 FedEx Express 2 2026-04-16
FDX1345 FedEx Express 2 2026-05-27
FDX1328 FedEx Express 2 2026-04-17
FDX1318 FedEx Express 2 2026-05-23
FDX1313 FedEx Express 2 2026-05-30
FDX1309 FedEx Express 2 2026-04-16
FDX1303 FedEx Express 2 2026-05-22
FDX1245 FedEx Express 2 2026-04-28
FDX1218 FedEx Express 2 2026-05-20
FDX1217 FedEx Express 2 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 FDX1313 MSY → MEM May 30, 04:15 UTCMay 30, 05:00 UTC45m
2026-05-30 FDX1313 MSY → MEM May 30, 02:40 UTCMay 30, 03:05 UTC25m
2026-05-29 FDX1453 MEM → MSY May 29, 08:45 UTCMay 29, 09:40 UTC55m
2026-05-29 FDX1237 EWR → MEM May 29, 03:35 UTCMay 29, 04:50 UTC1h 15m
2026-05-28 FDX1486 MEM → LCK May 28, 09:40 UTCMay 28, 10:50 UTC1h 10m
2026-05-28 FDX1334 ABQ → MEM May 28, 02:15 UTCMay 28, 04:15 UTC2h 0m
2026-05-27 FDX1583 MEM → ABQ May 27, 10:20 UTCMay 27, 12:25 UTC2h 5m
2026-05-27 FDX1345 SFO → MEM May 27, 02:49 UTCMay 27, 03:59 UTC1h 10m
2026-05-23 FDX1500 CID → DSM May 23, 11:25 UTCMay 23, 11:50 UTC25m
2026-05-23 FDX1500 CID → DSM May 23, 11:22 UTCMay 23, 11:49 UTC27m
2026-05-23 FDX1500 CID → DSM May 23, 09:15 UTCMay 23, 10:20 UTC1h 5m
2026-05-23 FDX1318 LRD → SHV May 23, 03:20 UTCMay 23, 03:55 UTC35m
2026-05-23 FDX1318 LRD → SHV May 23, 01:05 UTCMay 23, 02:05 UTC1h 0m
2026-05-22 FDX1517 MEM → LRD May 22, 09:55 UTCMay 22, 11:40 UTC1h 45m
2026-05-22 FDX1303 MDT → MEM May 22, 02:15 UTCMay 22, 04:00 UTC1h 45m
2026-05-21 FDX1571 MEM → MDT May 21, 09:00 UTCMay 21, 10:35 UTC1h 35m
2026-05-20 FDX1218 DTW → MEM May 20, 03:10 UTCMay 20, 04:40 UTC1h 31m
2026-05-20 FDX1218 DTW → MEM May 20, 03:08 UTCMay 20, 04:37 UTC1h 29m
2026-05-19 FDX1418 MEM → DTW May 19, 09:00 UTCMay 19, 10:20 UTC1h 20m
2026-05-16 FDX1295 CPR → MEM May 16, 01:15 UTCMay 16, 05:51 UTC4h 36m
2026-05-15 FDX1495 MEM → BOI May 15, 09:15 UTCMay 15, 12:25 UTC3h 10m
2026-05-15 FDX1303 MDT → MEM May 15, 02:15 UTCMay 15, 04:00 UTC1h 45m
2026-05-14 FDX1564 MEM → SWF May 14, 11:35 UTCMay 14, 12:05 UTC30m
2026-05-14 FDX1564 MEM → SWF May 14, 08:30 UTCMay 14, 10:31 UTC2h 0m
2026-05-14 FDX137 YWG → MEM May 14, 00:45 UTCMay 14, 02:40 UTC1h 55m
2026-05-13 FDX134 MEM → YWG May 13, 09:50 UTCMay 13, 12:35 UTC2h 45m
2026-05-12 FDX1315 ELP → MEM May 12, 02:45 UTCMay 12, 04:20 UTC1h 35m
2026-05-11 FDX533 MEM → ELP May 11, 02:15 UTCMay 11, 03:50 UTC1h 35m
2026-05-10 FDX533 MEM → ELP May 10, 22:20 UTCMay 10, 23:50 UTC1h 30m
2026-05-09 FDX1267 SDF → MEM May 9, 01:59 UTCMay 9, 04:37 UTC2h 38m
2026-05-08 FDX1548 MEM → GTF May 8, 09:04 UTCMay 9, 04:35 UTC19h 30m
2026-05-08 FDX1237 EWR → MEM May 8, 02:39 UTCMay 8, 04:04 UTC1h 25m
2026-05-07 FDX1486 MEM → LCK May 7, 09:25 UTCMay 7, 10:25 UTC1h 0m
2026-05-07 FDX1217 BWI → MEM May 7, 02:25 UTCMay 7, 04:30 UTC2h 5m
2026-05-07 FDX1217 BWI → MEM May 7, 02:20 UTCMay 7, 04:30 UTC2h 10m
2026-05-06 FDX1730 IND → BWI May 6, 09:00 UTCMay 6, 10:05 UTC1h 5m
2026-05-06 FDX1682 BNA → IND May 6, 02:10 UTCMay 6, 04:00 UTC1h 50m
2026-05-05 FDX1682 BNA → IND May 5, 23:45 UTCMay 6, 00:25 UTC40m
2026-05-05 FDX1747 IND → BDL May 5, 12:00 UTCMay 5, 13:30 UTC1h 30m
2026-05-05 FDX1639 RIC → IND May 5, 04:30 UTCMay 5, 05:20 UTC50m
2026-05-01 FDX1715 IND → BNA May 1, 09:05 UTCMay 1, 09:45 UTC40m
2026-05-01 FDX1715 IND → BNA May 1, 09:03 UTCMay 1, 09:45 UTC42m
2026-05-01 FDX153 YOW → IND May 1, 02:20 UTCMay 1, 04:05 UTC1h 45m
2026-04-30 FDX152 BUF → YOW Apr 30, 08:45 UTCApr 30, 10:10 UTC1h 25m
2026-04-30 FDX1630 BWI → IND Apr 30, 02:50 UTCApr 30, 04:20 UTC1h 30m
2026-04-29 FDX1482 MEM → BWI Apr 29, 09:35 UTCApr 29, 11:10 UTC1h 35m
2026-04-29 FDX1237 EWR → MEM Apr 29, 05:09 UTCApr 29, 06:29 UTC1h 20m
2026-04-28 FDX1486 MEM → LCK Apr 28, 10:35 UTCApr 28, 11:40 UTC1h 5m
2026-04-28 FDX1245 CAE → MEM Apr 28, 03:05 UTCApr 28, 04:30 UTC1h 25m
2026-04-28 FDX1245 CAE → MEM Apr 28, 03:04 UTCApr 28, 04:29 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 N658FE page for operator, model, and routing details .

Mode-S A8AAF4 frequently asked

What is Mode-S code A8AAF4?
A8AAF4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N658FE.
Where is Mode-S A8AAF4 registered?
Mode-S code A8AAF4 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 A8AAF4 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8AAF4, octal 52125364, decimal 11,053,812.
What flights does A8AAF4 operate?
Mode-S A8AAF4 has broadcast 20 distinct callsigns, including FDX1486, FDX1237, FDX1583, FDX1500, FDX1334.