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sensors Mode-S transponder

ADC5A6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N987FD · BOEING 757-200 · operated by FEDERAL EXPRESS CORP

Hex
ADC5A6
Octal
53342646
Decimal
11,388,326
Country
US
Tail
N987FD
Type
B752
No current signal · last broadcast Jul 25, 10:35 UTC
Flights observed
149
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 10:35 UTC

Last known position

Most recent position reported by Mode-S ADC5A6.

Country allocation

The ICAO 24-bit address ADC5A6 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
FDX1777 FedEx Express 8 2026-07-23
FDX1291 - 7 2026-07-09
FDX1329 - 6 2026-07-11
FDX1727 FedEx Express 4 2026-05-20
FDX1544 - 4 2026-07-09
FDX1491 - 4 2026-07-08
FDX1481 - 4 2026-07-15
FDX1464 - 4 2026-07-16
FDX1211 FedEx Express 4 2026-05-30
FDX2349 - 3 2026-07-16
FDX1677 - 3 2026-07-17
FDX1662 FedEx Express 3 2026-05-21
FDX1559 FedEx Express 3 2026-04-16
FDX1502 - 3 2026-06-19
FDX1357 FedEx Express 3 2026-07-24
FDX1339 - 3 2026-07-15
FDX1296 - 3 2026-07-02
FDX1231 - 3 2026-07-10
FDX380 FedEx Express 2 2026-04-15
FDX1901 FedEx Express 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1570 MEM → ALB Jul 25, 08:40 UTCJul 25, 10:35 UTC1h 55m
2026-07-25 FDX1293 RST → MEM Jul 25, 02:35 UTCJul 25, 03:55 UTC1h 20m
2026-07-24 FDX1493 MEM → RST Jul 24, 09:35 UTCJul 24, 10:55 UTC1h 20m
2026-07-24 FDX1493 MEM → RST Jul 24, 09:30 UTCJul 24, 10:55 UTC1h 25m
2026-07-24 FDX1357 IND → MEM Jul 24, 05:00 UTCJul 24, 06:15 UTC1h 15m
2026-07-24 FDX1357 IND → MEM Jul 24, 01:55 UTCJul 24, 03:20 UTC1h 25m
2026-07-23 FDX1777 IND → CID Jul 23, 10:10 UTCJul 23, 10:35 UTC25m
2026-07-23 FDX1777 IND → CID Jul 23, 08:30 UTCJul 23, 09:20 UTC50m
2026-07-23 FDX2640 BNA → IND Jul 23, 03:00 UTCJul 23, 03:40 UTC40m
2026-07-22 FDX2380 MSY → BNA Jul 22, 12:50 UTCJul 22, 13:55 UTC1h 5m
2026-07-22 FDX1757 MSY → ATL Jul 22, 08:35 UTCJul 22, 10:23 UTC1h 48m
2026-07-21 FDX1661 SLC → IND Jul 21, 02:15 UTCJul 21, 05:10 UTC2h 55m
2026-07-17 FDX1770 - Jul 17, 08:10 UTCJul 17, 10:55 UTC2h 45m
2026-07-17 FDX1677 - Jul 17, 03:30 UTCJul 17, 04:20 UTC50m
2026-07-16 FDX1464 - Jul 16, 09:30 UTCJul 16, 10:35 UTC1h 5m
2026-07-16 FDX2349 - Jul 16, 03:00 UTCJul 16, 03:55 UTC55m
2026-07-15 FDX1481 - Jul 15, 08:20 UTCJul 15, 09:20 UTC1h 0m
2026-07-15 FDX1339 - Jul 15, 02:15 UTCJul 15, 03:30 UTC1h 15m
2026-07-14 FDX1539 - Jul 14, 09:40 UTCJul 14, 10:50 UTC1h 10m
2026-07-14 FDX1310 - Jul 14, 01:50 UTCJul 14, 03:15 UTC1h 25m
2026-07-14 FDX1310 - Jul 14, 01:20 UTCJul 14, 01:45 UTC25m
2026-07-11 FDX1564 - Jul 11, 08:55 UTCJul 11, 11:00 UTC2h 5m
2026-07-11 FDX1329 - Jul 11, 02:50 UTCJul 11, 04:15 UTC1h 25m
2026-07-11 FDX1329 FSD → MEM Jul 11, 02:46 UTCJul 11, 04:13 UTC1h 27m
2026-07-11 FDX1329 ATW → FSD Jul 11, 01:00 UTCJul 11, 02:00 UTC1h 0m
2026-07-10 FDX1477 - Jul 10, 09:30 UTCJul 10, 11:05 UTC1h 35m
2026-07-10 FDX1231 - Jul 10, 02:05 UTCJul 10, 03:50 UTC1h 45m
2026-07-09 FDX1544 - Jul 9, 09:40 UTCJul 9, 11:35 UTC1h 55m
2026-07-09 FDX1291 - Jul 9, 01:15 UTCJul 9, 03:55 UTC2h 40m
2026-07-08 FDX1491 - Jul 8, 08:20 UTCJul 8, 10:30 UTC2h 10m
2026-07-08 FDX1357 - Jul 8, 02:15 UTCJul 8, 04:20 UTC2h 5m
2026-07-07 FDX1777 CID → DSM Jul 7, 10:30 UTCJul 7, 10:55 UTC25m
2026-07-07 FDX1777 - Jul 7, 08:55 UTCJul 7, 09:45 UTC50m
2026-07-07 FDX1606 - Jul 7, 02:40 UTCJul 7, 03:25 UTC45m
2026-07-03 FDX1469 MEM → FNT Jul 3, 08:55 UTCJul 3, 10:20 UTC1h 25m
2026-07-03 FDX1288 - Jul 3, 03:25 UTCJul 3, 04:15 UTC50m
2026-07-03 FDX1288 BHM → MEM Jul 3, 03:21 UTCJul 3, 04:15 UTC54m
2026-07-02 FDX1488 - Jul 2, 09:40 UTCJul 2, 10:15 UTC35m
2026-07-02 FDX1296 - Jul 2, 01:40 UTCJul 2, 03:20 UTC1h 40m
2026-07-01 FDX1578 - Jul 1, 09:05 UTCJul 1, 10:50 UTC1h 45m
2026-07-01 FDX1362 - Jul 1, 02:15 UTCJul 1, 03:30 UTC1h 15m
2026-06-30 FDX1451 - Jun 30, 10:05 UTCJun 30, 11:30 UTC1h 25m
2026-06-30 FDX2278 MCO → MEM Jun 30, 00:49 UTCJun 30, 02:15 UTC1h 26m
2026-06-26 FDX1586 MEM → EWR Jun 26, 08:24 UTCJun 26, 09:55 UTC1h 30m
2026-06-26 FDX1386 EWR → MEM Jun 26, 02:44 UTCJun 26, 04:45 UTC2h 0m
2026-06-25 FDX1409 - Jun 25, 07:45 UTCJun 25, 09:10 UTC1h 25m
2026-06-25 FDX2349 TLH → MEM Jun 25, 02:59 UTCJun 25, 03:59 UTC1h 0m
2026-06-20 FDX1481 - Jun 20, 09:09 UTCJun 20, 10:09 UTC1h 0m
2026-06-20 FDX1481 MEM → TLH Jun 20, 09:06 UTCJun 20, 10:05 UTC59m
2026-06-20 FDX1302 - Jun 20, 04:09 UTCJun 20, 05:24 UTC1h 15m

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 N987FD page for operator, model, and routing details .

Mode-S ADC5A6 frequently asked

What is Mode-S code ADC5A6?
ADC5A6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N987FD.
Where is Mode-S ADC5A6 registered?
Mode-S code ADC5A6 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 ADC5A6 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 10:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADC5A6, octal 53342646, decimal 11,388,326.
What flights does ADC5A6 operate?
Mode-S ADC5A6 has broadcast 20 distinct callsigns, including FDX1777, FDX1291, FDX1329, FDX1727, FDX1544.