Apparatus

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sensors Mode-S transponder

A15EE6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N188FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A15EE6
Octal
50257346
Decimal
10,575,590
Country
US
Tail
N188FE
Type
B763
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
231
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A15EE6.

Country allocation

The ICAO 24-bit address A15EE6 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
FDX1426 - 7 2026-06-17
FDX51 FedEx Express 6 2026-07-25
FDX1240 - 6 2026-07-17
FDX1378 FedEx Express 5 2026-07-22
FDX52 FedEx Express 4 2026-04-18
FDX434 FedEx Express 4 2026-06-17
FDX258 - 4 2026-07-22
FDX1440 FedEx Express 4 2026-06-05
FDX1273 FedEx Express 4 2026-05-28
FDX62 FedEx Express 3 2026-07-25
FDX476 FedEx Express 3 2026-06-11
FDX367 FedEx Express 3 2026-05-27
FDX2210 FedEx Express 3 2026-06-03
FDX1738 FedEx Express 3 2026-06-11
FDX1712 - 3 2026-06-26
FDX1650 FedEx Express 3 2026-04-17
FDX1622 - 3 2026-06-26
FDX1497 - 3 2026-07-09
FDX1404 FedEx Express 3 2026-04-16
FDX1229 FedEx Express 3 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FDX936 ROC → EWR Jul 26, 20:40 UTCJul 26, 21:30 UTC50m
2026-07-25 FDX62 SJU → MEM Jul 25, 14:00 UTCJul 25, 17:40 UTC3h 40m
2026-07-25 FDX51 MEM → SJU Jul 25, 12:00 UTCJul 25, 12:25 UTC25m
2026-07-25 FDX51 MEM → SJU Jul 25, 08:40 UTCJul 25, 10:30 UTC1h 50m
2026-07-25 FDX51 MEM → SJU Jul 25, 08:38 UTCJul 25, 12:19 UTC3h 41m
2026-07-24 FDX455 LAX → MEM Jul 24, 13:45 UTCJul 24, 17:00 UTC3h 15m
2026-07-23 FDX944 MEM → LAX Jul 23, 20:05 UTCJul 23, 23:05 UTC3h 0m
2026-07-23 FDX2361 SDF → MEM Jul 23, 04:05 UTCJul 23, 04:55 UTC50m
2026-07-22 FDX722 MEM → SDF Jul 22, 22:55 UTCJul 22, 23:45 UTC50m
2026-07-22 FDX258 - Jul 22, 10:20 UTCJul 22, 21:00 UTC10h 40m
2026-07-22 FDX1378 BUF → MEM Jul 22, 02:35 UTCJul 22, 03:45 UTC1h 10m
2026-07-22 FDX1378 BUF → MEM Jul 22, 00:35 UTCJul 22, 01:25 UTC50m
2026-07-21 FDX1425 - Jul 21, 08:20 UTCJul 21, 09:20 UTC1h 0m
2026-07-21 FDX1378 BUF → MEM Jul 21, 02:50 UTCJul 21, 04:00 UTC1h 10m
2026-07-21 FDX1378 BUF → MEM Jul 21, 00:40 UTCJul 21, 01:25 UTC45m
2026-07-17 FDX1416 - Jul 17, 11:10 UTCJul 17, 11:50 UTC40m
2026-07-17 FDX1416 - Jul 17, 08:35 UTCJul 17, 10:05 UTC1h 30m
2026-07-17 FDX1240 LAS → MEM Jul 17, 02:45 UTCJul 17, 05:39 UTC2h 55m
2026-07-16 FDX1840 OAK → LAS Jul 16, 23:00 UTCJul 17, 00:06 UTC1h 6m
2026-07-16 FDX1840 OAK → LAS Jul 16, 22:59 UTCJul 17, 00:10 UTC1h 10m
2026-07-16 FDX1841 - Jul 16, 03:30 UTCJul 16, 06:30 UTC3h 0m
2026-07-15 FDX1841 OAK → AFW Jul 15, 22:35 UTCJul 16, 01:25 UTC2h 50m
2026-07-14 FDX1419 - Jul 14, 09:10 UTCJul 14, 12:35 UTC3h 25m
2026-07-14 FDX1235 - Jul 14, 01:40 UTCJul 14, 04:00 UTC2h 20m
2026-07-10 FDX1435 - Jul 10, 08:25 UTCJul 10, 10:25 UTC2h 0m
2026-07-10 FDX1253 - Jul 10, 01:55 UTCJul 10, 03:50 UTC1h 55m
2026-07-09 FDX1497 - Jul 9, 08:35 UTCJul 9, 10:20 UTC1h 45m
2026-07-09 FDX1497 MEM → ABE Jul 9, 08:30 UTCJul 9, 10:15 UTC1h 45m
2026-07-09 FDX1212 - Jul 9, 01:05 UTCJul 9, 03:35 UTC2h 30m
2026-07-08 FDX1412 - Jul 8, 08:25 UTCJul 8, 10:40 UTC2h 15m
2026-07-08 FDX1346 - Jul 8, 02:15 UTCJul 8, 03:45 UTC1h 30m
2026-07-07 FDX1552 - Jul 7, 09:10 UTCJul 7, 10:25 UTC1h 15m
2026-07-07 FDX1216 - Jul 7, 01:50 UTCJul 7, 05:25 UTC3h 35m
2026-07-03 FDX1857 OAK → PDX Jul 3, 09:35 UTCJul 3, 10:52 UTC1h 17m
2026-07-03 FDX1857 OAK → PDX Jul 3, 09:35 UTCJul 3, 10:50 UTC1h 15m
2026-07-03 FDX1804 SLC → OAK Jul 3, 03:15 UTCJul 3, 04:40 UTC1h 25m
2026-07-03 FDX1804 SLC → OAK Jul 3, 03:15 UTCJul 3, 04:45 UTC1h 30m
2026-07-02 FDX945 - Jul 2, 21:05 UTCJul 2, 23:55 UTC2h 50m
2026-07-02 FDX693 - Jul 2, 11:55 UTCJul 2, 13:45 UTC1h 50m
2026-07-02 FDX693 MIA → MEM Jul 2, 11:55 UTCJul 2, 13:51 UTC1h 56m
2026-07-02 FDX1707 - Jul 2, 08:10 UTCJul 2, 10:20 UTC2h 10m
2026-07-02 FDX1635 - Jul 2, 02:45 UTCJul 2, 03:50 UTC1h 5m
2026-07-01 FDX1492 - Jul 1, 09:05 UTCJul 1, 10:15 UTC1h 10m
2026-07-01 FDX1492 MEM → CLT Jul 1, 09:02 UTCJul 1, 10:15 UTC1h 13m
2026-07-01 FDX1268 OAK → MEM Jul 1, 02:00 UTCJul 1, 05:30 UTC3h 30m
2026-06-30 FDX568 - Jun 30, 20:40 UTCJul 1, 00:20 UTC3h 40m
2026-06-30 FDX644 - Jun 30, 12:40 UTCJun 30, 14:40 UTC2h 0m
2026-06-30 FDX1431 - Jun 30, 08:15 UTCJun 30, 10:20 UTC2h 5m
2026-06-30 FDX2209 MCO → MEM Jun 30, 01:45 UTCJun 30, 03:25 UTC1h 40m
2026-06-28 FDX746 - Jun 28, 20:34 UTCJun 28, 22:10 UTC1h 35m

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 N188FE page for operator, model, and routing details .

Mode-S A15EE6 frequently asked

What is Mode-S code A15EE6?
A15EE6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N188FE.
Where is Mode-S A15EE6 registered?
Mode-S code A15EE6 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 A15EE6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A15EE6, octal 50257346, decimal 10,575,590.
What flights does A15EE6 operate?
Mode-S A15EE6 has broadcast 20 distinct callsigns, including FDX1426, FDX51, FDX1240, FDX1378, FDX52.