Apparatus

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sensors Mode-S transponder

A1087A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N166FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A1087A
Octal
50204172
Decimal
10,553,466
Country
US
Tail
N166FE
Type
B763
No current signal · last broadcast 4h ago
Flights observed
149
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A1087A.

Country allocation

The ICAO 24-bit address A1087A 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
FDX130 FedEx Express 8 2026-05-09
FDX131 FedEx Express 6 2026-05-10
FDX251 FedEx Express 5 2026-06-03
FDX1748 FedEx Express 5 2026-05-22
FDX1460 - 4 2026-07-03
FDX657 FedEx Express 3 2026-04-14
FDX52 FedEx Express 3 2026-06-04
FDX1421 - 3 2026-07-09
FDX1416 FedEx Express 3 2026-05-20
FDX1312 FedEx Express 3 2026-05-21
FDX1265 FedEx Express 3 2026-04-18
FDX1260 FedEx Express 3 2026-05-08
FDX1188 - 3 2026-07-10
FDX9131 - 2 2026-06-29
FDX9129 - 2 2026-06-27
FDX601 FedEx Express 2 2026-06-03
FDX550 FedEx Express 2 2026-05-26
FDX435 - 2 2026-07-12
FDX3629 FedEx Express 2 2026-05-23
FDX311 - 2 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FDX1314 - Jul 14, 03:00 UTCJul 14, 04:55 UTC1h 55m
2026-07-12 FDX192 - Jul 12, 21:25 UTCJul 13, 00:01 UTC2h 35m
2026-07-12 FDX435 OAK → MEM Jul 12, 11:19 UTCJul 12, 14:51 UTC3h 32m
2026-07-12 FDX435 - Jul 12, 11:20 UTCJul 12, 14:50 UTC3h 30m
2026-07-11 FDX311 - Jul 11, 22:05 UTCJul 12, 01:45 UTC3h 40m
2026-07-11 FDX311 MEM → OAK Jul 11, 22:04 UTCJul 12, 01:41 UTC3h 37m
2026-07-11 FDX613 - Jul 11, 13:25 UTCJul 11, 15:30 UTC2h 5m
2026-07-10 FDX1188 - Jul 10, 10:00 UTCJul 10, 10:50 UTC50m
2026-07-10 FDX1188 SAT → ELP Jul 10, 10:00 UTCJul 10, 11:03 UTC1h 3m
2026-07-10 FDX1188 - Jul 10, 08:25 UTCJul 10, 09:10 UTC45m
2026-07-10 FDX1124 ATL → AFW Jul 10, 03:05 UTCJul 10, 04:40 UTC1h 35m
2026-07-09 FDX1421 - Jul 9, 07:45 UTCJul 9, 08:30 UTC45m
2026-07-09 FDX1421 MEM → ATL Jul 9, 07:40 UTCJul 9, 08:32 UTC52m
2026-07-09 FDX1203 - Jul 9, 01:35 UTCJul 9, 03:05 UTC1h 30m
2026-07-09 FDX1203 PIT → MEM Jul 9, 01:32 UTCJul 9, 03:01 UTC1h 29m
2026-07-08 FDX1722 IND → PIT Jul 8, 08:35 UTCJul 8, 09:20 UTC45m
2026-07-08 FDX1678 PHX → IND Jul 8, 02:45 UTCJul 8, 05:45 UTC3h 0m
2026-07-07 FDX3711 - Jul 7, 20:40 UTCJul 7, 23:40 UTC3h 0m
2026-07-07 FDX3631 - Jul 7, 12:30 UTCJul 7, 14:15 UTC1h 45m
2026-07-07 FDX1410 - Jul 7, 09:05 UTCJul 7, 10:25 UTC1h 20m
2026-07-07 FDX2260 - Jul 7, 03:05 UTCJul 7, 04:05 UTC1h 0m
2026-07-03 FDX1460 - Jul 3, 09:15 UTCJul 3, 10:15 UTC1h 0m
2026-07-03 FDX1460 MEM → CVG Jul 3, 09:10 UTCJul 3, 10:10 UTC1h 0m
2026-07-03 FDX2200 - Jul 3, 02:50 UTCJul 3, 04:50 UTC2h 0m
2026-07-02 FDX398 - Jul 2, 22:30 UTCJul 3, 00:20 UTC1h 50m
2026-07-02 FDX1212 - Jul 2, 01:15 UTCJul 2, 03:30 UTC2h 15m
2026-07-01 FDX1412 - Jul 1, 08:25 UTCJul 1, 10:35 UTC2h 10m
2026-07-01 FDX2345 SDF → MEM Jul 1, 03:25 UTCJul 1, 04:05 UTC40m
2026-06-30 FDX1467 - Jun 30, 09:55 UTCJun 30, 10:45 UTC50m
2026-06-30 FDX1205 - Jun 30, 02:30 UTCJun 30, 03:40 UTC1h 10m
2026-06-29 FDX1443 MEM → RIC Jun 29, 22:19 UTCJun 29, 23:44 UTC1h 25m
2026-06-29 FDX9131 - Jun 29, 05:04 UTCJun 29, 07:34 UTC2h 30m
2026-06-29 FDX9131 MEX → MEM Jun 29, 05:02 UTCJun 29, 07:34 UTC2h 32m
2026-06-27 FDX9129 - Jun 27, 21:25 UTCJun 27, 21:50 UTC25m
2026-06-27 FDX9129 - Jun 27, 19:39 UTCJun 27, 20:24 UTC45m
2026-06-10 FDX9130 MEM → YMX Jun 10, 02:20 UTCJun 10, 04:45 UTC2h 25m
2026-06-09 FDX476 RDU → MEM Jun 9, 11:50 UTCJun 9, 13:15 UTC1h 25m
2026-06-09 FDX1738 IND → RDU Jun 9, 08:30 UTCJun 9, 09:35 UTC1h 5m
2026-06-09 FDX1678 PHX → IND Jun 9, 02:55 UTCJun 9, 05:45 UTC2h 50m
2026-06-06 FDX1403 MEM → PHX Jun 6, 09:39 UTCJun 6, 12:20 UTC2h 40m
2026-06-06 FDX1243 CLT → MEM Jun 6, 02:35 UTCJun 6, 03:45 UTC1h 10m
2026-06-05 FDX1729 IND → CLT Jun 5, 08:30 UTCJun 5, 09:35 UTC1h 5m
2026-06-05 FDX1638 RDU → IND Jun 5, 02:15 UTCJun 5, 03:20 UTC1h 5m
2026-06-04 FDX1449 MEM → RDU Jun 4, 08:55 UTCJun 4, 10:25 UTC1h 30m
2026-06-04 FDX52 SJU → MEM Jun 4, 03:10 UTCJun 4, 05:10 UTC2h 0m
2026-06-04 FDX52 SJU → MEM Jun 4, 01:20 UTCJun 4, 01:30 UTC10m
2026-06-03 FDX251 MEM → SJU Jun 3, 23:20 UTCJun 3, 23:40 UTC20m
2026-06-03 FDX251 MEM → SJU Jun 3, 20:15 UTCJun 3, 21:50 UTC1h 35m
2026-06-03 FDX601 PHX → MEM Jun 3, 12:00 UTCJun 3, 13:50 UTC1h 50m
2026-06-03 FDX601 PHX → MEM Jun 3, 11:56 UTCJun 3, 13:50 UTC1h 54m

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 N166FE page for operator, model, and routing details .

Mode-S A1087A frequently asked

What is Mode-S code A1087A?
A1087A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N166FE.
Where is Mode-S A1087A registered?
Mode-S code A1087A 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 A1087A 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 A1087A, octal 50204172, decimal 10,553,466.
What flights does A1087A operate?
Mode-S A1087A has broadcast 20 distinct callsigns, including FDX130, FDX131, FDX251, FDX1748, FDX1460.