Apparatus

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sensors Mode-S transponder

A313B4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N298FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A313B4
Octal
50611664
Decimal
10,687,412
Country
US
Tail
N298FE
Type
B763
No current signal · last broadcast 4h ago
Flights observed
101
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A313B4.

Country allocation

The ICAO 24-bit address A313B4 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
FDX1742 FedEx Express 5 2026-05-07
FDX1865 FedEx Express 4 2026-05-29
FDX1508 FedEx Express 4 2026-05-01
FDX1438 FedEx Express 4 2026-06-02
FDX3901 - 3 2026-04-15
FDX1803 FedEx Express 3 2026-05-06
FDX67 FedEx Express 2 2026-05-30
FDX3629 FedEx Express 2 2026-05-06
FDX1838 FedEx Express 2 2026-05-09
FDX1837 FedEx Express 2 2026-04-21
FDX1804 FedEx Express 2 2026-05-29
FDX1759 FedEx Express 2 2026-05-22
FDX1717 FedEx Express 2 2026-05-14
FDX169 FedEx Express 2 2026-05-09
FDX1466 FedEx Express 2 2026-05-19
FDX1446 - 2 2026-04-14
FDX1431 FedEx Express 2 2026-05-15
FDX1417 FedEx Express 2 2026-04-23
FDX139 FedEx Express 2 2026-05-12
FDX1375 FedEx Express 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 FDX3646 ONT → IND Jun 2, 14:00 UTCJun 2, 17:25 UTC3h 25m
2026-06-02 FDX1438 MEM → ONT Jun 2, 09:15 UTCJun 2, 12:30 UTC3h 15m
2026-06-02 FDX131 YMX → MEM Jun 2, 01:30 UTCJun 2, 04:09 UTC2h 39m
2026-06-02 FDX131 YMX → MEM Jun 2, 01:30 UTCJun 2, 04:10 UTC2h 40m
2026-06-01 FDX130 MEM → YMX Jun 1, 12:50 UTCJun 1, 13:40 UTC50m
2026-06-01 FDX130 MEM → YMX Jun 1, 06:30 UTCJun 1, 08:45 UTC2h 15m
2026-05-30 FDX168 MTY → MEM May 30, 23:55 UTCMay 31, 01:11 UTC1h 16m
2026-05-30 FDX67 MEM → MTY May 30, 09:35 UTCMay 30, 11:35 UTC2h 0m
2026-05-30 FDX1262 PHX → MEM May 30, 02:45 UTCMay 30, 05:05 UTC2h 20m
2026-05-29 FDX1865 OAK → PHX May 29, 10:05 UTCMay 29, 11:25 UTC1h 20m
2026-05-29 FDX1804 SLC → OAK May 29, 05:40 UTCMay 29, 06:15 UTC35m
2026-05-29 FDX1804 SLC → OAK May 29, 03:15 UTCMay 29, 03:40 UTC25m
2026-05-28 FDX945 MEM → SLC May 28, 21:15 UTCMay 28, 23:50 UTC2h 35m
2026-05-28 FDX1238 BUR → MEM May 28, 02:35 UTCMay 28, 03:50 UTC1h 15m
2026-05-27 FDX1437 MEM → MKE May 27, 09:35 UTCMay 27, 10:50 UTC1h 15m
2026-05-27 FDX1208 GEG → MEM May 27, 01:32 UTCMay 27, 04:59 UTC3h 27m
2026-05-23 FDX1476 MEM → GEG May 23, 08:50 UTCMay 23, 12:15 UTC3h 25m
2026-05-23 FDX1210 TPA → MEM May 23, 02:20 UTCMay 23, 03:45 UTC1h 24m
2026-05-22 FDX1759 IND → TPA May 22, 08:55 UTCMay 22, 10:45 UTC1h 50m
2026-05-22 FDX1759 IND → TPA May 22, 08:54 UTCMay 22, 10:45 UTC1h 51m
2026-05-22 FDX1654 SAN → IND May 22, 02:35 UTCMay 22, 06:05 UTC3h 30m
2026-05-21 FDX1422 MEM → SAN May 21, 09:20 UTCMay 21, 12:35 UTC3h 15m
2026-05-21 FDX54 MTY → MEM May 21, 02:25 UTCMay 21, 04:45 UTC2h 20m
2026-05-20 FDX53 MEM → TLC May 20, 09:55 UTCMay 20, 12:05 UTC2h 10m
2026-05-20 FDX1375 TUL → MEM May 20, 03:20 UTCMay 20, 04:10 UTC50m
2026-05-19 FDX1466 MEM → TUL May 19, 09:30 UTCMay 19, 11:00 UTC1h 30m
2026-05-19 FDX1344 TUS → MEM May 19, 02:05 UTCMay 19, 04:45 UTC2h 40m
2026-05-16 FDX1414 MEM → TUS May 16, 09:45 UTCMay 16, 12:25 UTC2h 40m
2026-05-16 FDX1292 JFK → MEM May 16, 02:55 UTCMay 16, 05:05 UTC2h 10m
2026-05-15 FDX1431 MEM → JFK May 15, 07:55 UTCMay 15, 09:55 UTC2h 0m
2026-05-15 FDX1223 SEA → MEM May 15, 01:55 UTCMay 15, 05:25 UTC3h 30m
2026-05-14 FDX3884 OAK → SEA May 14, 21:45 UTCMay 14, 23:25 UTC1h 40m
2026-05-14 FDX3824 SEA → OAK May 14, 14:25 UTCMay 14, 16:00 UTC1h 35m
2026-05-14 FDX1717 IND → SEA May 14, 08:05 UTCMay 14, 12:20 UTC4h 15m
2026-05-14 FDX1635 CLT → IND May 14, 02:45 UTCMay 14, 03:55 UTC1h 10m
2026-05-13 FDX1492 MEM → CLT May 13, 09:00 UTCMay 13, 10:05 UTC1h 5m
2026-05-13 FDX1375 TUL → MEM May 13, 02:10 UTCMay 13, 02:55 UTC45m
2026-05-12 FDX1466 MEM → TUL May 12, 09:25 UTCMay 12, 10:15 UTC50m
2026-05-12 FDX139 YVR → MEM May 12, 04:50 UTCMay 12, 05:10 UTC20m
2026-05-12 FDX139 YVR → MEM May 12, 02:55 UTCMay 12, 03:40 UTC45m
2026-05-11 FDX242 MEM → MIA May 11, 08:15 UTCMay 11, 12:30 UTC4h 15m
2026-05-10 FDX598A ANC → MEM May 10, 02:30 UTCMay 10, 08:20 UTC5h 50m
2026-05-09 FDX169 ANC → NRT May 9, 10:10 UTCMay 9, 14:15 UTC4h 5m
2026-05-09 FDX169 ANC → NRT May 9, 10:15 UTCMay 9, 14:20 UTC4h 5m
2026-05-09 FDX1838 SEA → OAK May 9, 03:58 UTCMay 9, 05:34 UTC1h 36m
2026-05-09 FDX1838 SEA → OAK May 9, 04:00 UTCMay 9, 05:35 UTC1h 35m
2026-05-08 FDX1717 IND → SEA May 8, 08:24 UTCMay 8, 12:30 UTC4h 5m
2026-05-07 FDX3617 SEA → IND May 7, 12:55 UTCMay 7, 16:25 UTC3h 30m
2026-05-07 FDX1742 IND → LAX May 7, 07:00 UTCMay 7, 10:50 UTC3h 50m
2026-05-07 FDX1610 BOS → IND May 7, 02:15 UTCMay 7, 04:30 UTC2h 15m

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 N298FE page for operator, model, and routing details .

Mode-S A313B4 frequently asked

What is Mode-S code A313B4?
A313B4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N298FE.
Where is Mode-S A313B4 registered?
Mode-S code A313B4 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 A313B4 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 A313B4, octal 50611664, decimal 10,687,412.
What flights does A313B4 operate?
Mode-S A313B4 has broadcast 20 distinct callsigns, including FDX1742, FDX1865, FDX1508, FDX1438, FDX3901.