Apparatus

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sensors Mode-S transponder

A90770

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N681FE · AIRBUS A-300-600 · operated by FEDERAL EXPRESS CORPORATION, ATTN: MANAGER FAA & INDUSTRY AFFAIRS

Hex
A90770
Octal
52203560
Decimal
11,077,488
Country
US
Tail
N681FE
Type
A306
No current signal · last broadcast 3d ago
Flights observed
42
Distinct callsigns
20
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A90770.

Country allocation

The ICAO 24-bit address A90770 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
FDX1564 FedEx Express 3 2026-05-12
FDX1217 FedEx Express 3 2026-04-23
FDX1730 FedEx Express 2 2026-04-22
FDX1630 FedEx Express 2 2026-04-17
FDX1517 FedEx Express 2 2026-05-20
FDX1478 FedEx Express 2 2026-05-07
FDX1366 FedEx Express 2 2026-05-28
FDX1330 FedEx Express 2 2026-05-08
FDX1303 FedEx Express 2 2026-05-16
FDX121 FedEx Express 2 2026-05-29
FDX120 FedEx Express 2 2026-05-29
FDX1105 FedEx Express 2 2026-05-21
FDX3608 FedEx Express 1 2026-05-21
FDX1709 FedEx Express 1 2026-05-27
FDX1571 FedEx Express 1 2026-05-15
FDX1548 FedEx Express 1 2026-05-13
FDX1526 FedEx Express 1 2026-05-14
FDX1489 FedEx Express 1 2026-05-28
FDX1486 FedEx Express 1 2026-05-06
FDX1482 FedEx Express 1 2026-04-16

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-05-29 FDX121 YYC → MEM May 29, 23:55 UTCMay 30, 03:25 UTC3h 30m
2026-05-29 FDX120 MEM → YEG May 29, 09:55 UTCMay 29, 13:10 UTC3h 15m
2026-05-29 FDX1289 PBI → MEM May 29, 02:15 UTCMay 29, 03:55 UTC1h 40m
2026-05-28 FDX1489 MEM → PBI May 28, 09:30 UTCMay 28, 11:30 UTC2h 0m
2026-05-28 FDX1366 PDX → SNA May 28, 02:35 UTCMay 28, 05:35 UTC3h 0m
2026-05-27 FDX1366 PDX → SNA May 27, 22:30 UTCMay 28, 00:30 UTC2h 0m
2026-05-27 FDX1709 PDX → OAK May 27, 08:35 UTCMay 27, 12:10 UTC3h 35m
2026-05-21 FDX3608 DEN → IND May 21, 13:30 UTCMay 21, 15:25 UTC1h 55m
2026-05-21 FDX1162 AFW → DEN May 21, 08:35 UTCMay 21, 10:05 UTC1h 30m
2026-05-21 FDX1105 IAH → AFW May 21, 03:30 UTCMay 21, 04:10 UTC40m
2026-05-21 FDX1105 IAH → AFW May 21, 01:05 UTCMay 21, 01:50 UTC45m
2026-05-20 FDX1517 MEM → LRD May 20, 10:25 UTCMay 20, 12:10 UTC1h 45m
2026-05-20 FDX1517 MEM → LRD May 20, 10:20 UTCMay 20, 12:10 UTC1h 50m
2026-05-20 FDX121 YYC → MEM May 20, 00:10 UTCMay 20, 03:35 UTC3h 25m
2026-05-19 FDX120 MEM → YEG May 19, 10:05 UTCMay 19, 14:05 UTC4h 0m
2026-05-16 FDX1303 MDT → MEM May 16, 02:35 UTCMay 16, 04:20 UTC1h 45m
2026-05-15 FDX1571 MEM → MDT May 15, 09:15 UTCMay 15, 11:00 UTC1h 45m
2026-05-15 FDX1350 BFM → MEM May 15, 02:25 UTCMay 15, 03:10 UTC45m
2026-05-14 FDX1526 MEM → BFM May 14, 09:00 UTCMay 14, 09:55 UTC55m
2026-05-13 FDX1548 MEM → GTF May 13, 09:40 UTCMay 13, 17:35 UTC7h 55m
2026-05-13 FDX1303 MDT → MEM May 13, 02:05 UTCMay 13, 03:55 UTC1h 50m
2026-05-12 FDX1564 MEM → SWF May 12, 12:30 UTCMay 12, 13:05 UTC35m
2026-05-12 FDX1564 MEM → SWF May 12, 08:45 UTCMay 12, 10:45 UTC2h 0m
2026-05-12 FDX1564 MEM → SWF May 12, 08:44 UTCMay 12, 10:45 UTC2h 1m
2026-05-08 FDX1330 MSN → MEM May 8, 02:14 UTCMay 8, 03:35 UTC1h 20m
2026-05-07 FDX1478 MEM → MSN May 7, 09:30 UTCMay 7, 10:40 UTC1h 10m
2026-05-07 FDX1237 EWR → MEM May 7, 03:25 UTCMay 7, 05:00 UTC1h 35m
2026-05-06 FDX1486 MEM → LCK May 6, 10:35 UTCMay 6, 11:35 UTC1h 0m
2026-05-06 FDX137 YWG → MEM May 6, 00:50 UTCMay 6, 03:05 UTC2h 14m
2026-05-05 FDX134 MEM → YWG May 5, 09:35 UTCMay 5, 12:00 UTC2h 25m
2026-05-05 FDX1235 BDL → MEM May 5, 01:55 UTCMay 5, 04:20 UTC2h 25m
2026-05-01 FDX1435 MEM → BDL May 1, 08:40 UTCMay 1, 10:40 UTC2h 0m
2026-05-01 FDX1330 MSN → MEM May 1, 02:20 UTCMay 1, 03:30 UTC1h 10m
2026-04-30 FDX1478 MEM → MSN Apr 30, 09:05 UTCApr 30, 10:30 UTC1h 25m
2026-04-23 FDX1217 BWI → MEM Apr 23, 02:25 UTCApr 23, 04:20 UTC1h 55m
2026-04-22 FDX1730 IND → BWI Apr 22, 09:05 UTCApr 22, 10:20 UTC1h 15m
2026-04-17 FDX1630 BWI → IND Apr 17, 03:20 UTCApr 17, 04:15 UTC55m
2026-04-17 FDX1630 BWI → IND Apr 17, 02:59 UTCApr 17, 03:15 UTC15m
2026-04-16 FDX1482 MEM → BWI Apr 16, 09:10 UTCApr 16, 10:45 UTC1h 35m
2026-04-16 FDX1217 BWI → MEM Apr 16, 03:09 UTCApr 16, 04:40 UTC1h 30m
2026-04-16 FDX1217 BWI → MEM Apr 16, 02:30 UTCApr 16, 03:04 UTC35m
2026-04-15 FDX1730 IND → BWI Apr 15, 09:00 UTCApr 15, 10:00 UTC1h 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 N681FE page for operator, model, and routing details .

Mode-S A90770 frequently asked

What is Mode-S code A90770?
A90770 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N681FE.
Where is Mode-S A90770 registered?
Mode-S code A90770 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 A90770 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A90770, octal 52203560, decimal 11,077,488.
What flights does A90770 operate?
Mode-S A90770 has broadcast 20 distinct callsigns, including FDX1564, FDX1217, FDX1730, FDX1630, FDX1517.