Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A27201

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N257FE · operated by FEDERAL EXPRESS CORP

Hex
A27201
Octal
50471001
Decimal
10,646,017
Country
US
Tail
N257FE
Type
B763
No current signal · last broadcast 8h ago
Flights observed
109
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A27201.

Country allocation

The ICAO 24-bit address A27201 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
FDX1508 FedEx Express 4 2026-04-18
FDX1889 FedEx Express 3 2026-05-30
FDX1476 FedEx Express 3 2026-04-16
FDX1379 FedEx Express 3 2026-04-15
FDX1247 FedEx Express 3 2026-04-18
FDX980 FedEx Express 2 2026-05-07
FDX944 FedEx Express 2 2026-04-19
FDX936 FedEx Express 2 2026-05-18
FDX874 FedEx Express 2 2026-05-24
FDX716 FedEx Express 2 2026-05-06
FDX711 FedEx Express 2 2026-04-15
FDX568 FedEx Express 2 2026-04-23
FDX1853 FedEx Express 2 2026-05-27
FDX1838 FedEx Express 2 2026-05-27
FDX1804 FedEx Express 2 2026-05-07
FDX1707 FedEx Express 2 2026-04-15
FDX1628 FedEx Express 2 2026-05-28
FDX1610 FedEx Express 2 2026-05-19
FDX1552 FedEx Express 2 2026-05-01
FDX1537 FedEx Express 2 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 FDX1537 MEM → HRL Jun 2, 10:50 UTCJun 2, 12:20 UTC1h 30m
2026-06-02 FDX1537 MEM → HRL Jun 2, 10:45 UTCJun 2, 12:20 UTC1h 35m
2026-06-02 FDX1222 SAN → MEM Jun 2, 02:40 UTCJun 2, 05:50 UTC3h 10m
2026-05-30 FDX1889 OAK → SAN May 30, 11:25 UTCMay 30, 11:45 UTC20m
2026-05-30 FDX1889 OAK → SAN May 30, 11:21 UTCMay 30, 11:43 UTC22m
2026-05-30 FDX1889 OAK → SAN May 30, 09:25 UTCMay 30, 10:15 UTC50m
2026-05-29 FDX1468 MEM → OAK May 29, 08:40 UTCMay 29, 12:20 UTC3h 40m
2026-05-29 FDX1223 SEA → MEM May 29, 02:10 UTCMay 29, 05:55 UTC3h 45m
2026-05-28 FDX3884 OAK → SEA May 28, 22:40 UTCMay 29, 00:10 UTC1h 30m
2026-05-28 FDX3824 SEA → OAK May 28, 14:50 UTCMay 28, 16:20 UTC1h 30m
2026-05-28 FDX1717 IND → SEA May 28, 08:30 UTCMay 28, 12:20 UTC3h 50m
2026-05-28 FDX1628 DEN → IND May 28, 03:17 UTCMay 28, 05:13 UTC1h 56m
2026-05-28 FDX1628 DEN → IND May 28, 03:20 UTCMay 28, 05:15 UTC1h 55m
2026-05-27 FDX3702 IND → OAK May 27, 21:05 UTCMay 27, 23:30 UTC2h 25m
2026-05-27 FDX3646 ONT → IND May 27, 13:40 UTCMay 27, 17:10 UTC3h 30m
2026-05-27 FDX1853 OAK → ONT May 27, 10:00 UTCMay 27, 10:55 UTC55m
2026-05-27 FDX1838 SEA → OAK May 27, 03:55 UTCMay 27, 05:28 UTC1h 33m
2026-05-27 FDX1838 SEA → OAK May 27, 03:59 UTCMay 27, 05:29 UTC1h 30m
2026-05-26 FDX397 OAK → SEA May 26, 19:34 UTCMay 26, 23:14 UTC3h 40m
2026-05-26 FDX613 ELP → MEM May 26, 13:54 UTCMay 26, 15:45 UTC1h 50m
2026-05-24 FDX916 MEM → ELP May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 FDX874 RIC → MEM May 24, 13:10 UTCMay 24, 15:20 UTC2h 10m
2026-05-24 FDX874 RIC → MEM May 24, 13:10 UTCMay 24, 15:29 UTC2h 19m
2026-05-23 FDX3901 LAX → EWR May 23, 13:55 UTCMay 23, 18:40 UTC4h 45m
2026-05-23 FDX1876 OAK → LAX May 23, 10:05 UTCMay 23, 11:00 UTC55m
2026-05-22 FDX1806 DFW → OAK May 22, 03:55 UTCMay 22, 07:00 UTC3h 5m
2026-05-21 FDX1723 IND → DFW May 21, 08:30 UTCMay 21, 10:15 UTC1h 45m
2026-05-21 FDX1603 ATL → IND May 21, 03:25 UTCMay 21, 04:20 UTC55m
2026-05-20 FDX1774 IND → ATL May 20, 08:55 UTCMay 20, 10:00 UTC1h 5m
2026-05-20 FDX1629 CLT → IND May 20, 02:30 UTCMay 20, 04:40 UTC2h 11m
2026-05-19 FDX1759 IND → TPA May 19, 08:45 UTCMay 19, 10:35 UTC1h 50m
2026-05-19 FDX1610 BOS → IND May 19, 02:14 UTCMay 19, 04:09 UTC1h 55m
2026-05-19 FDX1610 BOS → IND May 19, 02:15 UTCMay 19, 04:15 UTC2h 0m
2026-05-18 FDX936 ROC → EWR May 18, 00:00 UTCMay 18, 00:45 UTC45m
2026-05-17 FDX936 ROC → EWR May 17, 20:45 UTCMay 17, 22:35 UTC1h 50m
2026-05-16 FDX421 EWR → MEM May 16, 11:31 UTCMay 16, 13:35 UTC2h 5m
2026-05-15 FDX1700 IND → EWR May 15, 07:55 UTCMay 15, 09:20 UTC1h 25m
2026-05-14 FDX3647 OAK → IND May 14, 13:30 UTCMay 14, 17:25 UTC3h 55m
2026-05-14 FDX1419 MEM → OAK May 14, 07:45 UTCMay 14, 11:20 UTC3h 35m
2026-05-14 FDX1281 GSP → MEM May 14, 02:05 UTCMay 14, 03:10 UTC1h 5m
2026-05-13 FDX1506 MEM → GSP May 13, 09:25 UTCMay 13, 10:15 UTC50m
2026-05-13 FDX1365 DFW → MEM May 13, 04:00 UTCMay 13, 05:00 UTC1h 0m
2026-05-12 FDX1136 LRD → AFW May 12, 21:45 UTCMay 12, 22:45 UTC1h 0m
2026-05-12 FDX1155 AFW → IAH May 12, 10:35 UTCMay 12, 11:25 UTC50m
2026-05-12 FDX1155 AFW → IAH May 12, 08:35 UTCMay 12, 09:15 UTC40m
2026-05-12 FDX1107 ORD → AFW May 12, 04:15 UTCMay 12, 06:00 UTC1h 45m
2026-05-12 FDX1107 ORD → AFW May 12, 04:14 UTCMay 12, 05:55 UTC1h 41m
2026-05-09 FDX1220 DEN → MEM May 9, 03:15 UTCMay 9, 04:55 UTC1h 40m
2026-05-08 FDX1420 MEM → DEN May 8, 09:04 UTCMay 8, 11:05 UTC2h 0m
2026-05-08 FDX1380 LAX → MEM May 8, 01:29 UTCMay 8, 03:24 UTC1h 55m

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 N257FE page for operator, model, and routing details .

Mode-S A27201 frequently asked

What is Mode-S code A27201?
A27201 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N257FE.
Where is Mode-S A27201 registered?
Mode-S code A27201 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 A27201 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27201, octal 50471001, decimal 10,646,017.
What flights does A27201 operate?
Mode-S A27201 has broadcast 20 distinct callsigns, including FDX1508, FDX1889, FDX1476, FDX1379, FDX1247.