Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A8F63B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N677FE · AIRBUS A-300-600 · operated by FEDERAL EXPRESS CORP

Hex
A8F63B
Octal
52173073
Decimal
11,073,083
Country
US
Tail
N677FE
Type
A306
No current signal · last broadcast Jul 25, 12:05 UTC
Flights observed
153
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 12:05 UTC

Last known position

Most recent position reported by Mode-S A8F63B.

Country allocation

The ICAO 24-bit address A8F63B 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
FDX1303 - 8 2026-07-09
FDX1564 - 7 2026-07-02
FDX2266 - 5 2026-07-07
FDX1366 - 5 2026-07-16
FDX2639 FedEx Express 4 2026-06-26
FDX1571 - 4 2026-07-08
FDX1465 - 4 2026-07-03
FDX1295 - 4 2026-07-11
FDX1105 - 4 2026-07-14
FDX3608 - 3 2026-07-14
FDX1715 - 3 2026-06-25
FDX1526 FedEx Express 3 2026-05-21
FDX152 - 3 2026-06-24
FDX1517 - 3 2026-07-11
FDX1489 FedEx Express 3 2026-07-23
FDX1478 FedEx Express 3 2026-07-25
FDX1473 - 3 2026-07-16
FDX134 FedEx Express 3 2026-05-25
FDX1322 FedEx Express 3 2026-06-04
FDX1289 FedEx Express 3 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1478 MEM → MSN Jul 25, 11:45 UTCJul 25, 12:05 UTC20m
2026-07-25 FDX1478 MEM → MSN Jul 25, 09:15 UTCJul 25, 10:35 UTC1h 20m
2026-07-25 FDX121 YYC → MEM Jul 25, 00:10 UTCJul 25, 03:10 UTC3h 0m
2026-07-24 FDX120 MEM → YEG Jul 24, 09:45 UTCJul 24, 13:25 UTC3h 40m
2026-07-24 FDX1289 PBI → MEM Jul 24, 02:00 UTCJul 24, 03:45 UTC1h 45m
2026-07-23 FDX1489 MEM → PBI Jul 23, 08:45 UTCJul 23, 10:25 UTC1h 40m
2026-07-23 FDX121 YYC → MEM Jul 23, 00:00 UTCJul 23, 03:10 UTC3h 10m
2026-07-22 FDX120 MEM → YEG Jul 22, 11:10 UTCJul 22, 14:15 UTC3h 5m
2026-07-22 FDX2338 - Jul 22, 01:25 UTCJul 22, 03:15 UTC1h 50m
2026-07-21 FDX1433 - Jul 21, 09:35 UTCJul 21, 11:15 UTC1h 40m
2026-07-21 FDX1383 - Jul 21, 06:25 UTCJul 21, 07:10 UTC45m
2026-07-21 FDX1383 TYS → MEM Jul 21, 06:21 UTCJul 21, 07:09 UTC48m
2026-07-21 FDX983 MEM → LAX Jul 21, 04:00 UTCJul 21, 04:50 UTC50m
2026-07-17 FDX1206 BOS → MEM Jul 17, 00:50 UTCJul 17, 03:20 UTC2h 30m
2026-07-16 FDX1473 OLV → BOS Jul 16, 08:30 UTCJul 16, 10:50 UTC2h 20m
2026-07-16 FDX1366 - Jul 16, 02:20 UTCJul 16, 05:35 UTC3h 15m
2026-07-15 FDX1366 - Jul 15, 22:35 UTCJul 16, 00:45 UTC2h 10m
2026-07-15 FDX1709 IND → PDX Jul 15, 08:25 UTCJul 15, 12:00 UTC3h 35m
2026-07-14 FDX3608 DEN → IND Jul 14, 13:05 UTCJul 14, 15:10 UTC2h 5m
2026-07-14 FDX1162 - Jul 14, 08:35 UTCJul 14, 10:00 UTC1h 25m
2026-07-14 FDX1105 - Jul 14, 03:45 UTCJul 14, 04:25 UTC40m
2026-07-14 FDX1105 - Jul 14, 01:05 UTCJul 14, 01:55 UTC50m
2026-07-11 FDX1517 - Jul 11, 11:35 UTCJul 11, 12:35 UTC1h 0m
2026-07-11 FDX1517 - Jul 11, 09:55 UTCJul 11, 10:35 UTC40m
2026-07-11 FDX1295 - Jul 11, 02:45 UTCJul 11, 04:55 UTC2h 10m
2026-07-11 FDX1295 - Jul 11, 00:45 UTCJul 11, 01:45 UTC1h 0m
2026-07-10 FDX1495 - Jul 10, 09:45 UTCJul 10, 12:55 UTC3h 10m
2026-07-10 FDX1380 - Jul 10, 05:15 UTCJul 10, 06:45 UTC1h 30m
2026-07-10 FDX1380 RIC → MEM Jul 10, 05:12 UTCJul 10, 06:45 UTC1h 33m
2026-07-10 FDX980 - Jul 10, 02:20 UTCJul 10, 03:55 UTC1h 35m
2026-07-09 FDX1303 - Jul 9, 02:20 UTCJul 9, 04:25 UTC2h 5m
2026-07-09 FDX1303 MDT → MEM Jul 9, 02:18 UTCJul 9, 04:07 UTC1h 49m
2026-07-08 FDX1571 - Jul 8, 08:50 UTCJul 8, 10:25 UTC1h 35m
2026-07-08 FDX1571 MEM → MDT Jul 8, 08:49 UTCJul 8, 10:25 UTC1h 36m
2026-07-07 FDX2266 - Jul 7, 00:55 UTCJul 7, 02:35 UTC1h 40m
2026-07-03 FDX1465 - Jul 3, 09:00 UTCJul 3, 10:40 UTC1h 40m
2026-07-03 FDX1303 - Jul 3, 02:20 UTCJul 3, 04:00 UTC1h 40m
2026-07-03 FDX1303 MDT → MEM Jul 3, 02:15 UTCJul 3, 04:01 UTC1h 46m
2026-07-02 FDX1564 - Jul 2, 11:55 UTCJul 2, 12:25 UTC30m
2026-07-02 FDX1564 SWF → MDT Jul 2, 11:50 UTCJul 2, 12:27 UTC37m
2026-07-02 FDX1564 - Jul 2, 08:45 UTCJul 2, 10:45 UTC2h 0m
2026-07-02 FDX1289 - Jul 2, 02:00 UTCJul 2, 03:40 UTC1h 40m
2026-07-01 FDX1489 - Jul 1, 09:15 UTCJul 1, 11:00 UTC1h 45m
2026-07-01 FDX1285 - Jul 1, 02:55 UTCJul 1, 03:40 UTC45m
2026-06-30 FDX1746 - Jun 30, 09:05 UTCJun 30, 09:50 UTC45m
2026-06-30 FDX2679 IAD → IND Jun 30, 03:20 UTCJun 30, 04:25 UTC1h 5m
2026-06-26 FDX1755 - Jun 26, 09:05 UTCJun 26, 10:05 UTC1h 0m
2026-06-26 FDX2639 ORF → RIC Jun 26, 04:10 UTCJun 26, 04:50 UTC40m
2026-06-25 FDX1715 - Jun 25, 09:05 UTCJun 25, 09:45 UTC40m
2026-06-25 FDX153 YMX → IND Jun 25, 02:10 UTCJun 25, 03:59 UTC1h 50m

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 N677FE page for operator, model, and routing details .

Mode-S A8F63B frequently asked

What is Mode-S code A8F63B?
A8F63B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N677FE.
Where is Mode-S A8F63B registered?
Mode-S code A8F63B 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 A8F63B broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 12:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8F63B, octal 52173073, decimal 11,073,083.
What flights does A8F63B operate?
Mode-S A8F63B has broadcast 20 distinct callsigns, including FDX1303, FDX1564, FDX2266, FDX1366, FDX2639.