Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
Broadcasting now · callsign DTA651 · 35,000 ft
Flights observed
157
Distinct callsigns
7
Country
AO
Last broadcast
3h ago

Current position

0900F1 is currently broadcasting. Map zoomed to live position.

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 7 distinct

Callsign Airline Flights Last seen
DTA651 - 68 2026-07-13
DTA650 - 68 2026-07-13
DTA653 - 9 2026-06-24
DTA652 - 9 2026-06-24
DTA578 TAAG Angola Airlines 1 2026-05-04
DTA577 TAAG Angola Airlines 1 2026-05-04
DTA075 - 1 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DTA650 - Jul 13, 22:55 UTCJul 14, 05:40 UTC6h 45m
2026-07-13 DTA651 - Jul 13, 09:20 UTCJul 13, 16:05 UTC6h 45m
2026-07-12 DTA650 - Jul 12, 23:10 UTCJul 13, 05:55 UTC6h 45m
2026-07-12 DTA651 - Jul 12, 08:25 UTCJul 12, 15:05 UTC6h 40m
2026-07-11 DTA650 - Jul 11, 22:55 UTCJul 12, 05:40 UTC6h 45m
2026-07-10 DTA651 - Jul 10, 08:35 UTCJul 10, 15:15 UTC6h 40m
2026-07-09 DTA650 - Jul 9, 23:10 UTCJul 10, 05:55 UTC6h 45m
2026-07-09 DTA651 - Jul 9, 09:05 UTCJul 9, 15:40 UTC6h 35m
2026-07-08 DTA650 - Jul 8, 22:50 UTCJul 9, 05:35 UTC6h 45m
2026-07-08 DTA651 - Jul 8, 08:50 UTCJul 8, 15:40 UTC6h 50m
2026-07-07 DTA650 - Jul 7, 22:55 UTCJul 8, 05:45 UTC6h 50m
2026-07-07 DTA651 - Jul 7, 08:50 UTCJul 7, 15:30 UTC6h 40m
2026-07-06 DTA650 - Jul 6, 23:00 UTCJul 7, 05:40 UTC6h 40m
2026-07-06 DTA651 - Jul 6, 08:55 UTCJul 6, 15:45 UTC6h 50m
2026-07-05 DTA650 - Jul 5, 23:00 UTCJul 6, 05:50 UTC6h 50m
2026-07-05 DTA651 - Jul 5, 08:45 UTCJul 5, 15:45 UTC7h 0m
2026-07-04 DTA650 - Jul 4, 22:55 UTCJul 5, 05:35 UTC6h 40m
2026-07-03 DTA651 - Jul 3, 08:50 UTCJul 3, 15:45 UTC6h 55m
2026-07-02 DTA650 - Jul 2, 23:05 UTCJul 3, 05:55 UTC6h 50m
2026-07-02 DTA651 - Jul 2, 08:50 UTCJul 2, 15:40 UTC6h 50m
2026-07-01 DTA650 - Jul 1, 22:45 UTCJul 2, 05:35 UTC6h 50m
2026-07-01 DTA651 - Jul 1, 08:35 UTCJul 1, 15:20 UTC6h 45m
2026-06-30 DTA650 - Jun 30, 23:00 UTCJul 1, 06:00 UTC7h 0m
2026-06-30 DTA651 - Jun 30, 08:45 UTCJun 30, 15:30 UTC6h 45m
2026-06-29 DTA650 - Jun 29, 22:59 UTCJun 30, 05:55 UTC6h 55m
2026-06-29 DTA651 - Jun 29, 09:40 UTCJun 29, 16:19 UTC6h 40m
2026-06-28 DTA650 - Jun 28, 22:45 UTCJun 29, 05:40 UTC6h 55m
2026-06-28 DTA651 - Jun 28, 08:25 UTCJun 28, 15:09 UTC6h 45m
2026-06-27 DTA650 - Jun 27, 22:49 UTCJun 28, 05:40 UTC6h 50m
2026-06-27 DTA651 - Jun 27, 08:39 UTCJun 27, 15:34 UTC6h 55m
2026-06-26 DTA650 - Jun 26, 23:15 UTCJun 27, 05:44 UTC6h 30m
2026-06-26 DTA651 - Jun 26, 08:40 UTCJun 26, 15:25 UTC6h 45m
2026-06-25 DTA650 - Jun 25, 22:49 UTCJun 26, 05:44 UTC6h 55m
2026-06-24 DTA653 - Jun 24, 22:35 UTCJun 25, 05:20 UTC6h 45m
2026-06-24 DTA652 - Jun 24, 12:25 UTCJun 24, 19:15 UTC6h 50m
2026-06-23 DTA653 - Jun 23, 21:59 UTCJun 24, 04:50 UTC6h 50m
2026-06-23 DTA652 - Jun 23, 12:29 UTCJun 23, 19:19 UTC6h 50m
2026-06-22 DTA651 - Jun 22, 09:19 UTCJun 22, 16:10 UTC6h 50m
2026-06-22 DTA650 - Jun 22, 00:20 UTCJun 22, 07:04 UTC6h 45m
2026-06-21 DTA651 - Jun 21, 08:30 UTCJun 21, 15:09 UTC6h 40m
2026-06-20 DTA650 - Jun 20, 22:45 UTCJun 21, 05:35 UTC6h 50m
2026-06-20 DTA651 - Jun 20, 08:29 UTCJun 20, 15:04 UTC6h 35m
2026-06-19 DTA650 - Jun 19, 22:49 UTCJun 20, 05:44 UTC6h 55m
2026-06-19 DTA651 - Jun 19, 08:54 UTCJun 19, 15:34 UTC6h 40m
2026-06-18 DTA650 - Jun 18, 22:50 UTCJun 19, 05:34 UTC6h 44m
2026-06-08 DTA075 - Jun 8, 20:25 UTCJun 8, 20:35 UTC10m
2026-06-07 DTA651 LIS → LAD Jun 7, 08:20 UTCJun 7, 14:55 UTC6h 35m
2026-06-06 DTA650 LAD → LIS Jun 6, 23:00 UTCJun 7, 06:05 UTC7h 5m
2026-06-06 DTA651 LIS → LAD Jun 6, 09:24 UTCJun 6, 16:04 UTC6h 40m
2026-06-05 DTA650 LAD → LIS Jun 5, 22:55 UTCJun 6, 05:50 UTC6h 55m

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?
Yes. Mode-S 0900F1 is currently airborne.
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 7 distinct callsigns, including DTA651, DTA650, DTA653, DTA652, DTA578.