Apparatus

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sensors Mode-S transponder

A1701B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N192FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A1701B
Octal
50270033
Decimal
10,579,995
Country
US
Tail
N192FE
Type
B763
No current signal · last broadcast 3h ago
Flights observed
100
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A1701B.

Country allocation

The ICAO 24-bit address A1701B 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
FDX980 FedEx Express 2 2026-05-06
FDX979 FedEx Express 2 2026-05-21
FDX944 - 2 2026-04-13
FDX764 FedEx Express 2 2026-04-14
FDX701 FedEx Express 2 2026-04-23
FDX653 FedEx Express 2 2026-05-03
FDX630 FedEx Express 2 2026-04-25
FDX434 FedEx Express 2 2026-04-23
FDX1806 FedEx Express 2 2026-04-17
FDX1801 FedEx Express 2 2026-04-18
FDX1759 FedEx Express 2 2026-04-15
FDX1723 FedEx Express 2 2026-04-16
FDX1721 FedEx Express 2 2026-05-29
FDX1650 FedEx Express 2 2026-05-29
FDX1629 FedEx Express 2 2026-04-16
FDX1426 FedEx Express 2 2026-04-23
FDX1417 FedEx Express 2 2026-04-28
FDX1411 FedEx Express 2 2026-05-05
FDX1406 FedEx Express 2 2026-05-13
FDX139 FedEx Express 2 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 FDX421 EWR → MEM May 30, 11:20 UTCMay 30, 13:30 UTC2h 10m
2026-05-29 FDX1721 IND → EWR May 29, 08:30 UTCMay 29, 09:55 UTC1h 25m
2026-05-29 FDX1650 LAX → IND May 29, 02:30 UTCMay 29, 06:00 UTC3h 30m
2026-05-28 FDX1508 MEM → LAX May 28, 09:20 UTCMay 28, 12:50 UTC3h 30m
2026-05-28 FDX1201 DFW → MEM May 28, 02:25 UTCMay 28, 03:25 UTC1h 0m
2026-05-27 FDX1471 MEM → DFW May 27, 08:10 UTCMay 27, 09:05 UTC55m
2026-05-27 FDX1335 DTW → MEM May 27, 02:14 UTCMay 27, 03:45 UTC1h 30m
2026-05-24 FDX505 MEM → DTW May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-23 FDX1355 ONT → MEM May 23, 02:40 UTCMay 23, 05:45 UTC3h 5m
2026-05-22 FDX1853 OAK → ONT May 22, 09:35 UTCMay 22, 10:30 UTC55m
2026-05-22 FDX1837 PHX → OAK May 22, 03:30 UTCMay 22, 04:55 UTC1h 25m
2026-05-21 FDX979 MEM → PHX May 21, 23:50 UTCMay 22, 01:10 UTC1h 20m
2026-05-21 FDX979 MEM → PHX May 21, 19:30 UTCMay 21, 21:50 UTC2h 20m
2026-05-21 FDX841 SEA → MEM May 21, 12:00 UTCMay 21, 15:00 UTC3h 0m
2026-05-20 FDX307 MEM → ORF May 20, 22:00 UTCMay 21, 01:20 UTC3h 20m
2026-05-20 FDX455 LAX → MEM May 20, 12:00 UTCMay 20, 15:05 UTC3h 5m
2026-05-20 FDX1876 OAK → LAX May 20, 09:10 UTCMay 20, 10:00 UTC50m
2026-05-19 FDX540 MEM → SJC May 19, 21:15 UTCMay 20, 01:05 UTC3h 50m
2026-05-19 FDX1210 TPA → MEM May 19, 02:15 UTCMay 19, 03:55 UTC1h 40m
2026-05-16 FDX1410 MEM → TPA May 16, 08:55 UTCMay 16, 10:16 UTC1h 20m
2026-05-16 FDX1208 GEG → MEM May 16, 01:45 UTCMay 16, 05:00 UTC3h 15m
2026-05-15 FDX1476 MEM → GEG May 15, 08:30 UTCMay 15, 12:10 UTC3h 40m
2026-05-15 FDX139 YVR → MEM May 15, 01:20 UTCMay 15, 04:50 UTC3h 30m
2026-05-15 FDX139 YVR → MEM May 15, 01:17 UTCMay 15, 04:51 UTC3h 34m
2026-05-14 FDX142 MEM → YVR May 14, 09:30 UTCMay 14, 13:45 UTC4h 15m
2026-05-14 FDX1220 DEN → MEM May 14, 03:10 UTCMay 14, 04:55 UTC1h 45m
2026-05-13 FDX529 MEM → DEN May 13, 21:05 UTCMay 13, 23:05 UTC2h 0m
2026-05-13 FDX657 BDL → MEM May 13, 12:35 UTCMay 13, 15:15 UTC2h 40m
2026-05-13 FDX1406 MEM → BOS May 13, 08:15 UTCMay 13, 10:25 UTC2h 10m
2026-05-13 FDX1219 SJC → MEM May 13, 02:00 UTCMay 13, 05:35 UTC3h 35m
2026-05-12 FDX3724 IND → OAK May 12, 19:30 UTCMay 12, 23:25 UTC3h 55m
2026-05-12 FDX3609 EWR → IND May 12, 11:55 UTCMay 12, 13:30 UTC1h 35m
2026-05-12 FDX1721 IND → EWR May 12, 08:35 UTCMay 12, 10:00 UTC1h 25m
2026-05-12 FDX1608 STL → IND May 12, 04:15 UTCMay 12, 04:50 UTC35m
2026-05-09 FDX1523 MEM → STL May 9, 09:35 UTCMay 9, 10:15 UTC40m
2026-05-08 FDX1609 DFW → IND May 8, 16:15 UTCMay 8, 17:10 UTC55m
2026-05-07 FDX1136 LRD → AFW May 7, 22:10 UTCMay 7, 22:59 UTC49m
2026-05-07 FDX1537 MEM → HRL May 7, 09:55 UTCMay 7, 11:45 UTC1h 50m
2026-05-07 FDX1380 LAX → MEM May 7, 01:35 UTCMay 7, 03:50 UTC2h 15m
2026-05-07 FDX1380 LAX → MEM May 7, 01:34 UTCMay 7, 03:32 UTC1h 58m
2026-05-06 FDX980 MEM → DFW May 6, 21:55 UTCMay 6, 23:35 UTC1h 40m
2026-05-06 FDX980 MEM → DFW May 6, 21:53 UTCMay 6, 23:35 UTC1h 42m
2026-05-06 FDX416 BOS → MEM May 6, 13:50 UTCMay 6, 16:45 UTC2h 55m
2026-05-06 FDX1406 MEM → BOS May 6, 10:05 UTCMay 6, 12:05 UTC2h 0m
2026-05-06 FDX1378 BUF → MEM May 6, 02:05 UTCMay 6, 03:05 UTC59m
2026-05-05 FDX1411 MEM → IAH May 5, 11:45 UTCMay 5, 12:35 UTC50m
2026-05-05 FDX1411 MEM → IAH May 5, 09:20 UTCMay 5, 10:25 UTC1h 5m
2026-05-05 FDX1204 LAX → MEM May 5, 03:20 UTCMay 5, 05:05 UTC1h 45m
2026-05-03 FDX787 MEM → PHL May 3, 21:05 UTCMay 3, 22:34 UTC1h 30m
2026-05-03 FDX653 DTW → MEM May 3, 13:55 UTCMay 3, 15:25 UTC1h 30m

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 N192FE page for operator, model, and routing details .

Mode-S A1701B frequently asked

What is Mode-S code A1701B?
A1701B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N192FE.
Where is Mode-S A1701B registered?
Mode-S code A1701B 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 A1701B 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 A1701B, octal 50270033, decimal 10,579,995.
What flights does A1701B operate?
Mode-S A1701B has broadcast 20 distinct callsigns, including FDX980, FDX979, FDX944, FDX764, FDX701.