Apparatus

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sensors Mode-S transponder

0900F1

ICAO 24-bit transponder address · allocated to Angola

Currently assigned to D2-TEK · BOEING 777-300ER

Hex
0900F1
Octal
02200361
Decimal
590,065
Country
AO
Tail
D2-TEK
Type
B77W
Transponder active on ground
Flights observed
96
Distinct callsigns
6
Country
AO
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 0900F1.

Country allocation

The ICAO 24-bit address 0900F1 falls within the block assigned to Angola (AO) by ICAO Annex 10, Volume III. Every aircraft registered in Angola 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
DTA651 TAAG Angola Airlines 40 2026-05-29
DTA650 TAAG Angola Airlines 40 2026-05-29
DTA653 TAAG Angola Airlines 7 2026-05-10
DTA652 TAAG Angola Airlines 7 2026-05-10
DTA578 TAAG Angola Airlines 1 2026-05-04
DTA577 TAAG Angola Airlines 1 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DTA650 LAD → LIS May 29, 23:00 UTCMay 29, 23:25 UTC25m
2026-05-29 DTA651 LIS → LAD May 29, 09:05 UTCMay 29, 15:45 UTC6h 40m
2026-05-28 DTA650 LAD → LIS May 28, 23:25 UTCMay 29, 06:30 UTC7h 5m
2026-05-28 DTA651 LIS → LAD May 28, 09:30 UTCMay 28, 16:15 UTC6h 45m
2026-05-27 DTA650 LAD → LIS May 27, 23:05 UTCMay 28, 06:00 UTC6h 55m
2026-05-27 DTA651 LIS → LAD May 27, 08:55 UTCMay 27, 15:35 UTC6h 40m
2026-05-26 DTA650 LAD → LIS May 26, 22:54 UTCMay 27, 05:55 UTC7h 0m
2026-05-26 DTA651 LIS → LAD May 26, 08:59 UTCMay 26, 15:39 UTC6h 40m
2026-05-25 DTA650 LAD → LIS May 25, 23:14 UTCMay 26, 06:10 UTC6h 55m
2026-05-25 DTA651 LIS → LAD May 25, 08:50 UTCMay 25, 15:35 UTC6h 45m
2026-05-24 DTA650 LAD → LIS May 24, 23:00 UTCMay 25, 05:50 UTC6h 50m
2026-05-24 DTA651 LIS → LAD May 24, 09:00 UTCMay 24, 15:35 UTC6h 35m
2026-05-23 DTA650 LAD → LIS May 23, 22:50 UTCMay 24, 05:50 UTC7h 0m
2026-05-23 DTA651 LIS → LAD May 23, 08:55 UTCMay 23, 15:35 UTC6h 40m
2026-05-22 DTA650 LAD → LIS May 22, 23:05 UTCMay 23, 06:10 UTC7h 4m
2026-05-22 DTA651 LIS → LAD May 22, 08:45 UTCMay 22, 15:25 UTC6h 40m
2026-05-21 DTA650 LAD → LIS May 21, 22:55 UTCMay 22, 05:45 UTC6h 50m
2026-05-21 DTA651 LIS → LAD May 21, 08:40 UTCMay 21, 15:25 UTC6h 45m
2026-05-20 DTA650 LAD → LIS May 20, 22:55 UTCMay 21, 05:45 UTC6h 50m
2026-05-20 DTA651 LIS → LAD May 20, 08:45 UTCMay 20, 15:25 UTC6h 40m
2026-05-19 DTA650 LAD → LIS May 19, 23:15 UTCMay 20, 06:10 UTC6h 56m
2026-05-19 DTA651 LIS → LAD May 19, 08:40 UTCMay 19, 15:20 UTC6h 40m
2026-05-18 DTA650 LAD → LIS May 18, 22:55 UTCMay 19, 05:55 UTC7h 0m
2026-05-17 DTA651 LIS → LAD May 17, 09:25 UTCMay 17, 16:10 UTC6h 45m
2026-05-16 DTA650 LAD → LIS May 16, 23:10 UTCMay 17, 06:10 UTC7h 0m
2026-05-16 DTA651 LIS → LAD May 16, 09:51 UTCMay 16, 16:20 UTC6h 30m
2026-05-15 DTA650 LAD → LIS May 15, 23:15 UTCMay 16, 06:20 UTC7h 6m
2026-05-15 DTA651 LIS → LAD May 15, 08:50 UTCMay 15, 15:50 UTC6h 59m
2026-05-14 DTA650 LAD → LIS May 14, 23:10 UTCMay 15, 05:55 UTC6h 45m
2026-05-14 DTA651 LIS → LAD May 14, 08:55 UTCMay 14, 15:55 UTC7h 0m
2026-05-13 DTA650 LAD → LIS May 13, 23:00 UTCMay 14, 05:55 UTC6h 55m
2026-05-13 DTA651 LIS → LAD May 13, 08:20 UTCMay 13, 15:15 UTC6h 55m
2026-05-12 DTA650 LAD → LIS May 12, 22:55 UTCMay 13, 05:55 UTC7h 0m
2026-05-12 DTA651 LIS → LAD May 12, 08:50 UTCMay 12, 15:40 UTC6h 50m
2026-05-12 DTA650 LAD → LIS May 12, 05:05 UTCMay 12, 06:05 UTC1h 0m
2026-05-10 DTA653 LIS → LAD May 10, 22:20 UTCMay 11, 05:05 UTC6h 45m
2026-05-10 DTA652 LAD → LIS May 10, 12:34 UTCMay 10, 19:24 UTC6h 50m
2026-05-09 DTA653 LIS → LAD May 9, 22:00 UTCMay 10, 04:50 UTC6h 50m
2026-05-09 DTA652 LAD → LIS May 9, 12:25 UTCMay 9, 19:25 UTC7h 0m
2026-05-08 DTA653 LIS → LAD May 8, 22:25 UTCMay 9, 05:20 UTC6h 55m
2026-05-08 DTA652 LAD → LIS May 8, 12:34 UTCMay 8, 19:40 UTC7h 5m
2026-05-06 DTA653 LIS → LAD May 6, 22:00 UTCMay 7, 05:00 UTC7h 0m
2026-05-06 DTA652 LAD → LIS May 6, 12:30 UTCMay 6, 19:05 UTC6h 34m
2026-05-05 DTA653 LIS → LAD May 5, 21:50 UTCMay 6, 04:40 UTC6h 50m
2026-05-05 DTA652 LAD → LIS May 5, 12:20 UTCMay 5, 19:25 UTC7h 5m
2026-05-04 DTA578 JNB → LAD May 4, 15:00 UTCMay 4, 15:25 UTC25m
2026-05-04 DTA577 LAD → JNB May 4, 11:25 UTCMay 4, 12:05 UTC40m
2026-05-03 DTA651 LIS → LAD May 3, 08:40 UTCMay 3, 15:25 UTC6h 45m
2026-05-02 DTA650 LAD → LIS May 2, 23:20 UTCMay 3, 06:20 UTC6h 59m
2026-05-02 DTA651 LIS → LAD May 2, 08:55 UTCMay 2, 15:40 UTC6h 45m

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 D2-TEK page for operator, model, and routing details .

Mode-S 0900F1 frequently asked

What is Mode-S code 0900F1?
0900F1 is an ICAO 24-bit transponder address. Allocated to Angola. Assigned to D2-TEK.
Where is Mode-S 0900F1 registered?
Mode-S code 0900F1 is allocated to Angola (AO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0900F1 broadcasting right now?
Mode-S 0900F1 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0900F1, octal 02200361, decimal 590,065.
What flights does 0900F1 operate?
Mode-S 0900F1 has broadcast 6 distinct callsigns, including DTA651, DTA650, DTA653, DTA652, DTA578.