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
Broadcasting now · callsign FDX1222 · 15,400 ft
Flights observed
155
Distinct callsigns
20
Country
US
Last broadcast
14h ago

Current position

A313B4 is currently broadcasting. Map zoomed to live position.

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
FDX131 - 3 2026-06-23
FDX130 - 3 2026-06-22
FDX67 FedEx Express 2 2026-05-30
FDX613 - 2 2026-06-14
FDX3629 FedEx Express 2 2026-05-06
FDX331 - 2 2026-07-14
FDX257 FedEx Express 2 2026-06-03
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
FDX1476 FedEx Express 2 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 FDX1754 - Jul 17, 08:20 UTCJul 17, 11:45 UTC3h 25m
2026-07-16 FDX1618 MSP → IND Jul 16, 02:50 UTCJul 16, 04:10 UTC1h 20m
2026-07-15 FDX1718 - Jul 15, 09:15 UTCJul 15, 10:25 UTC1h 10m
2026-07-15 FDX2684 - Jul 15, 03:30 UTCJul 15, 06:00 UTC2h 30m
2026-07-14 FDX331 - Jul 14, 21:45 UTCJul 14, 23:30 UTC1h 44m
2026-07-14 FDX331 MEM → FLL Jul 14, 21:40 UTCJul 14, 23:33 UTC1h 53m
2026-07-14 FDX9131 - Jul 14, 05:35 UTCJul 14, 08:05 UTC2h 30m
2026-07-12 FDX9129 - Jul 12, 17:50 UTCJul 12, 19:45 UTC1h 55m
2026-06-24 FDX9130 - Jun 24, 02:34 UTCJun 24, 05:05 UTC2h 30m
2026-06-23 FDX830 - Jun 23, 11:54 UTCJun 23, 13:29 UTC1h 35m
2026-06-23 FDX1458 - Jun 23, 08:50 UTCJun 23, 10:15 UTC1h 25m
2026-06-23 FDX131 - Jun 23, 01:35 UTCJun 23, 04:05 UTC2h 30m
2026-06-22 FDX130 OLV → YMX Jun 22, 07:34 UTCJun 22, 09:45 UTC2h 10m
2026-06-21 FDX108 - Jun 21, 10:34 UTCJun 21, 16:44 UTC6h 10m
2026-06-20 FDX157 ANC → NRT Jun 20, 09:39 UTCJun 20, 16:09 UTC6h 30m
2026-06-20 FDX1243 - Jun 20, 02:29 UTCJun 20, 03:39 UTC1h 10m
2026-06-19 FDX1729 - Jun 19, 08:24 UTCJun 19, 09:24 UTC1h 0m
2026-06-18 FDX3648 OAK → IND Jun 18, 12:05 UTCJun 18, 15:50 UTC3h 45m
2026-06-18 FDX1806 DFW → OAK Jun 18, 04:00 UTCJun 18, 07:00 UTC3h 0m
2026-06-17 FDX1723 IND → DFW Jun 17, 08:50 UTCJun 17, 10:25 UTC1h 35m
2026-06-17 FDX1631 - Jun 17, 02:45 UTCJun 17, 03:30 UTC45m
2026-06-16 FDX361 - Jun 16, 22:20 UTCJun 16, 23:35 UTC1h 15m
2026-06-16 FDX415 ONT → MEM Jun 16, 12:10 UTCJun 16, 15:05 UTC2h 55m
2026-06-14 FDX394 MEM → ONT Jun 14, 22:10 UTCJun 15, 01:45 UTC3h 35m
2026-06-14 FDX613 - Jun 14, 14:25 UTCJun 14, 15:45 UTC1h 20m
2026-06-14 FDX613 - Jun 14, 12:05 UTCJun 14, 13:05 UTC1h 0m
2026-06-13 FDX1499 MEM → ELP Jun 13, 10:05 UTCJun 13, 12:10 UTC2h 5m
2026-06-13 FDX1220 - Jun 13, 03:00 UTCJun 13, 04:40 UTC1h 40m
2026-06-12 FDX1420 MEM → DEN Jun 12, 09:40 UTCJun 12, 11:40 UTC2h 0m
2026-06-12 FDX2204 LAX → MEM Jun 12, 03:20 UTCJun 12, 04:55 UTC1h 35m
2026-06-11 FDX711 MEM → IAD Jun 11, 20:40 UTCJun 11, 22:10 UTC1h 30m
2026-06-11 FDX416 BOS → MEM Jun 11, 12:30 UTCJun 11, 14:50 UTC2h 20m
2026-06-11 FDX1710 IND → BOS Jun 11, 08:35 UTCJun 11, 10:15 UTC1h 40m
2026-06-11 FDX1603 ATL → IND Jun 11, 03:20 UTCJun 11, 04:25 UTC1h 5m
2026-06-10 FDX1421 MEM → ATL Jun 10, 08:00 UTCJun 10, 08:50 UTC50m
2026-06-10 FDX1334 ABQ → MEM Jun 10, 02:05 UTCJun 10, 04:00 UTC1h 55m
2026-06-10 FDX1334 ABQ → MEM Jun 10, 02:04 UTCJun 10, 04:00 UTC1h 56m
2026-06-09 FDX1583 MEM → ABQ Jun 9, 10:00 UTCJun 9, 12:00 UTC2h 0m
2026-06-09 FDX2345 SDF → MEM Jun 9, 03:35 UTCJun 9, 04:25 UTC50m
2026-06-08 FDX722 MEM → SDF Jun 8, 23:30 UTCJun 9, 00:20 UTC50m
2026-06-08 FDX64 SJU → MEM Jun 8, 15:25 UTCJun 8, 19:10 UTC3h 45m
2026-06-07 FDX51 MEM → SJU Jun 7, 20:35 UTCJun 8, 00:35 UTC4h 0m
2026-06-06 FDX647 JFK → MEM Jun 6, 22:15 UTCJun 7, 01:00 UTC2h 45m
2026-06-06 FDX1406 MEM → BOS Jun 6, 17:05 UTCJun 6, 19:34 UTC2h 30m
2026-06-06 FDX1227 AUS → MEM Jun 6, 02:45 UTCJun 6, 04:00 UTC1h 15m
2026-06-06 FDX1227 AUS → MEM Jun 6, 02:45 UTCJun 6, 04:00 UTC1h 15m
2026-06-05 FDX1432 MEM → CLT Jun 5, 09:10 UTCJun 5, 10:15 UTC1h 5m
2026-06-05 FDX1432 MEM → CLT Jun 5, 09:00 UTCJun 5, 10:14 UTC1h 14m
2026-06-05 FDX1208 GEG → MEM Jun 5, 01:40 UTCJun 5, 05:00 UTC3h 20m
2026-06-04 FDX1476 MEM → GEG Jun 4, 08:55 UTCJun 4, 12:15 UTC3h 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 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?
Yes. Mode-S A313B4 is currently airborne.
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.