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 Jul 26, 22:30 UTC
Flights observed
182
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

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
FDX657 FedEx Express 4 2026-07-23
FDX1460 - 4 2026-07-03
FDX1212 FedEx Express 4 2026-07-25
FDX52 FedEx Express 3 2026-06-04
FDX398 FedEx Express 3 2026-07-23
FDX1421 - 3 2026-07-09
FDX1416 FedEx Express 3 2026-05-20
FDX1412 FedEx Express 3 2026-07-24
FDX1406 FedEx Express 3 2026-07-23
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FDX915 MEM → GEG Jul 26, 21:30 UTCJul 26, 22:30 UTC1h 0m
2026-07-26 FDX668 SEA → MEM Jul 26, 13:25 UTCJul 26, 16:50 UTC3h 25m
2026-07-25 FDX3954 SEA → LAX Jul 25, 19:05 UTCJul 26, 00:35 UTC5h 30m
2026-07-25 FDX3954 SEA → LAX Jul 25, 19:03 UTCJul 26, 00:34 UTC5h 31m
2026-07-25 FDX1402 MEM → EWR Jul 25, 08:05 UTCJul 25, 10:00 UTC1h 55m
2026-07-25 FDX1402 MEM → EWR Jul 25, 08:01 UTCJul 25, 09:55 UTC1h 54m
2026-07-25 FDX1212 MHT → MEM Jul 25, 03:10 UTCJul 25, 05:15 UTC2h 5m
2026-07-25 FDX1212 MHT → MEM Jul 25, 03:07 UTCJul 25, 05:14 UTC2h 7m
2026-07-25 FDX1212 MHT → MEM Jul 25, 01:00 UTCJul 25, 01:50 UTC50m
2026-07-24 FDX1412 MEM → MHT Jul 24, 08:10 UTCJul 24, 10:20 UTC2h 10m
2026-07-24 FDX1412 MEM → MHT Jul 24, 08:06 UTCJul 24, 10:20 UTC2h 14m
2026-07-24 FDX2200 FLL → MEM Jul 24, 02:45 UTCJul 24, 04:30 UTC1h 45m
2026-07-23 FDX398 MEM → ORD Jul 23, 22:05 UTCJul 23, 23:55 UTC1h 50m
2026-07-23 FDX398 MEM → ORD Jul 23, 21:59 UTCJul 23, 23:49 UTC1h 50m
2026-07-23 FDX657 BDL → MEM Jul 23, 12:05 UTCJul 23, 14:40 UTC2h 35m
2026-07-23 FDX1406 MEM → BOS Jul 23, 07:50 UTCJul 23, 09:55 UTC2h 5m
2026-07-23 FDX1365 DFW → MEM Jul 23, 04:35 UTCJul 23, 05:35 UTC1h 0m
2026-07-22 FDX1136 LRD → AFW Jul 22, 21:55 UTCJul 22, 22:50 UTC55m
2026-07-22 FDX1107 ORD → AFW Jul 22, 04:10 UTCJul 22, 05:25 UTC1h 15m
2026-07-21 FDX922 MEM → ORD Jul 21, 22:45 UTCJul 22, 00:30 UTC1h 45m
2026-07-21 FDX402 - Jul 21, 14:25 UTCJul 21, 17:40 UTC3h 15m
2026-07-21 FDX1476 - Jul 21, 09:00 UTCJul 21, 12:20 UTC3h 20m
2026-07-21 FDX2284 - Jul 21, 03:40 UTCJul 21, 04:35 UTC55m
2026-07-21 FDX2284 MCI → MEM Jul 21, 03:38 UTCJul 21, 04:35 UTC57m
2026-07-17 FDX1713 IND → MCI Jul 17, 08:49 UTCJul 17, 09:50 UTC1h 0m
2026-07-17 FDX1617 - Jul 17, 03:30 UTCJul 17, 05:10 UTC1h 40m
2026-07-16 FDX1732 - Jul 16, 08:25 UTCJul 16, 10:10 UTC1h 45m
2026-07-16 FDX1611 - Jul 16, 02:35 UTCJul 16, 03:10 UTC35m
2026-07-15 FDX505 - Jul 15, 21:00 UTCJul 15, 22:30 UTC1h 30m
2026-07-15 FDX830 - Jul 15, 11:35 UTCJul 15, 13:00 UTC1h 25m
2026-07-15 FDX1458 - Jul 15, 08:40 UTCJul 15, 10:05 UTC1h 25m
2026-07-15 FDX1247 - Jul 15, 04:15 UTCJul 15, 05:25 UTC1h 10m
2026-07-14 FDX1405 - Jul 14, 09:45 UTCJul 14, 11:05 UTC1h 20m
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

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 Jul 26, 22:30 UTC.
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, FDX657.