sensors Mode-S transponder

89666D

ICAO 24-bit transponder address · allocated to United Arab Emirates

Currently assigned to A6-FQL · BOEING 737 MAX 8

Hex
89666D
Octal
42263155
Decimal
9,004,653
Country
AE
Tail
A6-FQL
Type
B38M
No current signal · last broadcast 17h ago
Flights observed
6
Distinct callsigns
6
Country
AE
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 89666D.

Country allocation

The ICAO 24-bit address 89666D falls within the block assigned to United Arab Emirates (AE) by ICAO Annex 10, Volume III. Every aircraft registered in United Arab Emirates 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 6 distinct

Callsign Airline Flights Last seen
FDB9ST - 1 2026-04-13
FDB827 Fly Dubai 1 2026-04-13
FDB74X - 1 2026-04-14
FDB5LK - 1 2026-04-13
FDB570 - 1 2026-04-13
FDB569 Fly Dubai 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 FDB74X - Apr 14, 08:45 UTCApr 14, 09:05 UTC20m
2026-04-13 FDB827 DXB → MED Apr 13, 17:40 UTCApr 13, 19:00 UTC1h 20m
2026-04-13 FDB5LK - Apr 13, 13:55 UTCApr 13, 14:30 UTC35m
2026-04-13 FDB9ST - Apr 13, 08:20 UTCApr 13, 08:40 UTC20m
2026-04-13 FDB570 - Apr 13, 00:25 UTCApr 13, 01:05 UTC40m
2026-04-12 FDB569 DXB → CMB Apr 12, 17:45 UTCApr 12, 18:45 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 A6-FQL page for operator, model, and routing details .

Mode-S 89666D frequently asked

What is Mode-S code 89666D?
89666D is an ICAO 24-bit transponder address. Allocated to United Arab Emirates. Assigned to A6-FQL.
Where is Mode-S 89666D registered?
Mode-S code 89666D is allocated to United Arab Emirates (AE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89666D broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89666D, octal 42263155, decimal 9,004,653.
What flights does 89666D operate?
Mode-S 89666D has broadcast 6 distinct callsigns, including FDB9ST, FDB827, FDB74X, FDB5LK, FDB570.