Apparatus

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sensors Mode-S transponder

A246CB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N246FE · BOEING 767-300 · operated by BOEING CO

Hex
A246CB
Octal
50443313
Decimal
10,634,955
Country
US
Tail
N246FE
Type
B763
No current signal · last broadcast 22h ago
Flights observed
87
Distinct callsigns
20
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S A246CB.

Country allocation

The ICAO 24-bit address A246CB 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
FDX1359 FedEx Express 4 2026-04-15
FDX764 FedEx Express 3 2026-04-20
FDX1573 FedEx Express 3 2026-04-14
FDX1292 FedEx Express 3 2026-04-23
FDX916 FedEx Express 2 2026-05-10
FDX644 FedEx Express 2 2026-05-26
FDX52 FedEx Express 2 2026-05-28
FDX51 FedEx Express 2 2026-04-18
FDX251 FedEx Express 2 2026-05-27
FDX1874 FedEx Express 2 2026-04-30
FDX1609 FedEx Express 2 2026-05-29
FDX1542 FedEx Express 2 2026-04-17
FDX1463 FedEx Express 2 2026-04-15
FDX1447 FedEx Express 2 2026-05-01
FDX1313 FedEx Express 2 2026-05-07
FDX1312 FedEx Express 2 2026-04-24
FDX1209 FedEx Express 2 2026-05-05
FDX830 FedEx Express 1 2026-05-08
FDX746 FedEx Express 1 2026-05-03
FDX694 FedEx Express 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 FDX150 IND → YYZ May 29, 08:45 UTCMay 29, 09:45 UTC1h 0m
2026-05-29 FDX1609 DFW → IND May 29, 04:04 UTCMay 29, 05:41 UTC1h 37m
2026-05-29 FDX1609 DFW → IND May 29, 04:05 UTCMay 29, 05:45 UTC1h 40m
2026-05-28 FDX1401 MEM → DFW May 28, 09:25 UTCMay 28, 10:30 UTC1h 5m
2026-05-28 FDX52 SJU → MEM May 28, 03:30 UTCMay 28, 05:25 UTC1h 55m
2026-05-28 FDX52 SJU → MEM May 28, 01:50 UTCMay 28, 02:00 UTC10m
2026-05-27 FDX251 MEM → SJU May 27, 23:40 UTCMay 28, 00:00 UTC20m
2026-05-27 FDX251 MEM → SJU May 27, 20:20 UTCMay 27, 22:05 UTC1h 45m
2026-05-27 FDX455 LAX → MEM May 27, 12:15 UTCMay 27, 15:20 UTC3h 5m
2026-05-27 FDX1876 OAK → LAX May 27, 09:25 UTCMay 27, 10:15 UTC50m
2026-05-26 FDX540 MEM → SJC May 26, 20:50 UTCMay 27, 00:30 UTC3h 40m
2026-05-26 FDX644 JFK → MEM May 26, 12:08 UTCMay 26, 14:27 UTC2h 19m
2026-05-26 FDX644 JFK → MEM May 26, 12:10 UTCMay 26, 14:24 UTC2h 15m
2026-05-23 FDX1431 MEM → JFK May 23, 09:05 UTCMay 23, 11:00 UTC1h 55m
2026-05-23 FDX1261 MIA → MEM May 23, 00:45 UTCMay 23, 02:35 UTC1h 49m
2026-05-22 FDX1461 MEM → MIA May 22, 08:20 UTCMay 22, 10:10 UTC1h 50m
2026-05-22 FDX131 YMX → MEM May 22, 01:30 UTCMay 22, 04:10 UTC2h 40m
2026-05-21 FDX130 MEM → YMX May 21, 09:15 UTCMay 21, 11:15 UTC2h 0m
2026-05-21 FDX1223 SEA → MEM May 21, 01:55 UTCMay 21, 05:30 UTC3h 35m
2026-05-20 FDX397 OAK → SEA May 20, 20:00 UTCMay 21, 00:10 UTC4h 10m
2026-05-20 FDX694 BWI → MEM May 20, 12:05 UTCMay 20, 13:40 UTC1h 35m
2026-05-20 FDX1434 MEM → IAD May 20, 08:30 UTCMay 20, 10:05 UTC1h 35m
2026-05-20 FDX1358 MSP → MEM May 20, 02:40 UTCMay 20, 04:20 UTC1h 40m
2026-05-19 FDX1407 MEM → MSP May 19, 09:20 UTCMay 19, 10:50 UTC1h 30m
2026-05-19 FDX1276 JFK → MEM May 19, 02:30 UTCMay 19, 04:35 UTC2h 5m
2026-05-15 FDX1712 IND → JFK May 15, 08:35 UTCMay 15, 10:10 UTC1h 35m
2026-05-15 FDX1608 STL → IND May 15, 03:50 UTCMay 15, 04:25 UTC35m
2026-05-14 FDX1708 IND → STL May 14, 08:40 UTCMay 14, 09:15 UTC35m
2026-05-14 FDX1601 DFW → IND May 14, 02:40 UTCMay 14, 04:15 UTC1h 35m
2026-05-13 FDX1735 IND → DFW May 13, 07:40 UTCMay 13, 09:10 UTC1h 30m
2026-05-13 FDX1613 MCI → IND May 13, 03:40 UTCMay 13, 04:40 UTC1h 0m
2026-05-12 FDX1713 IND → MCI May 12, 08:50 UTCMay 12, 09:55 UTC1h 5m
2026-05-12 FDX1625 ELP → IND May 12, 02:45 UTCMay 12, 04:30 UTC1h 45m
2026-05-10 FDX916 MEM → ELP May 10, 23:05 UTCMay 11, 01:15 UTC2h 10m
2026-05-10 FDX916 MEM → ELP May 10, 23:02 UTCMay 11, 01:14 UTC2h 12m
2026-05-08 FDX830 MCO → MEM May 8, 11:40 UTCMay 8, 13:20 UTC1h 40m
2026-05-08 FDX1458 MEM → MCO May 8, 08:49 UTCMay 8, 10:14 UTC1h 25m
2026-05-08 FDX1213 BUR → MEM May 8, 01:59 UTCMay 8, 05:14 UTC3h 15m
2026-05-07 FDX1417 MEM → BUR May 7, 08:15 UTCMay 7, 11:45 UTC3h 30m
2026-05-07 FDX1313 MSY → MEM May 7, 02:30 UTCMay 7, 03:35 UTC1h 5m
2026-05-07 FDX1313 MSY → MEM May 7, 02:35 UTCMay 7, 03:35 UTC1h 0m
2026-05-06 FDX1453 MEM → MSY May 6, 09:45 UTCMay 6, 10:40 UTC55m
2026-05-06 FDX1238 BUR → MEM May 6, 03:15 UTCMay 6, 04:40 UTC1h 25m
2026-05-05 FDX1437 MEM → MKE May 5, 09:25 UTCMay 5, 10:45 UTC1h 20m
2026-05-05 FDX1209 MCO → MEM May 5, 02:05 UTCMay 5, 03:50 UTC1h 45m
2026-05-05 FDX1209 MCO → MEM May 5, 02:01 UTCMay 5, 03:52 UTC1h 51m
2026-05-03 FDX746 MEM → MCO May 3, 20:40 UTCMay 3, 22:09 UTC1h 30m
2026-05-02 FDX1205 ORD → MEM May 2, 02:25 UTCMay 2, 03:40 UTC1h 15m
2026-05-01 FDX1447 MEM → ORD May 1, 07:55 UTCMay 1, 09:05 UTC1h 10m
2026-05-01 FDX1447 MEM → ORD May 1, 07:54 UTCMay 1, 09:05 UTC1h 11m

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 N246FE page for operator, model, and routing details .

Mode-S A246CB frequently asked

What is Mode-S code A246CB?
A246CB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N246FE.
Where is Mode-S A246CB registered?
Mode-S code A246CB 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 A246CB broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A246CB, octal 50443313, decimal 10,634,955.
What flights does A246CB operate?
Mode-S A246CB has broadcast 20 distinct callsigns, including FDX1359, FDX764, FDX1573, FDX1292, FDX916.