Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

899051

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18666

Hex
899051
Octal
42310121
Decimal
9,015,377
Country
TW
Tail
B-18666
Type
B738
No current signal · last broadcast 11h ago
Flights observed
276
Distinct callsigns
20
Country
TW
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 899051.

Country allocation

The ICAO 24-bit address 899051 falls within the block assigned to Taiwan (TW) by ICAO Annex 10, Volume III. Every aircraft registered in Taiwan 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
MDA1261 Mandarin Airlines 14 2026-06-01
MDA1277 Mandarin Airlines 11 2026-06-02
MDA1262 Mandarin Airlines 11 2026-06-02
MDA7901 Mandarin Airlines 10 2026-06-02
MDA372 Mandarin Airlines 10 2026-06-02
MDA371 Mandarin Airlines 10 2026-06-02
MDA1278 Mandarin Airlines 10 2026-06-02
MDA7902 Mandarin Airlines 9 2026-06-02
B16868 - 6 2026-04-24
MDA392 Mandarin Airlines 4 2026-05-14
MDA391 Mandarin Airlines 4 2026-05-14
MDA385 Mandarin Airlines 4 2026-05-23
MDA374 Mandarin Airlines 4 2026-05-28
MDA367 Mandarin Airlines 4 2026-05-14
MDA310 Mandarin Airlines 4 2026-05-10
MDA309 Mandarin Airlines 4 2026-05-10
MDA1271 Mandarin Airlines 4 2026-05-29
MDA396 Mandarin Airlines 3 2026-05-29
MDA395 Mandarin Airlines 3 2026-05-29
MDA386 Mandarin Airlines 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 MDA1278 KNH → TSA Jun 2, 12:20 UTCJun 2, 12:55 UTC35m
2026-06-02 MDA1277 TSA → KNH Jun 2, 09:45 UTCJun 2, 10:35 UTC50m
2026-06-02 MDA372 MZG → TSA Jun 2, 07:55 UTCJun 2, 08:45 UTC50m
2026-06-02 MDA371 TSA → MZG Jun 2, 06:25 UTCJun 2, 07:10 UTC45m
2026-06-02 MDA7902 LZN → TSA Jun 2, 04:45 UTCJun 2, 05:10 UTC25m
2026-06-02 MDA7901 TSA → LZN Jun 2, 03:00 UTCJun 2, 03:30 UTC30m
2026-06-02 MDA1262 KNH → TSA Jun 2, 01:10 UTCJun 2, 01:50 UTC40m
2026-06-01 MDA1261 TSA → KNH Jun 1, 23:00 UTCJun 1, 23:45 UTC45m
2026-06-01 MDA1278 KNH → TSA Jun 1, 12:00 UTCJun 1, 12:35 UTC35m
2026-06-01 MDA1277 TSA → KNH Jun 1, 09:45 UTCJun 1, 10:25 UTC40m
2026-06-01 MDA372 MZG → TSA Jun 1, 07:30 UTCJun 1, 08:15 UTC45m
2026-06-01 MDA371 TSA → MZG Jun 1, 06:00 UTCJun 1, 06:45 UTC45m
2026-06-01 MDA7902 LZN → TSA Jun 1, 04:55 UTCJun 1, 05:15 UTC20m
2026-06-01 MDA7901 TSA → LZN Jun 1, 03:10 UTCJun 1, 03:25 UTC15m
2026-06-01 MDA1262 KNH → TSA Jun 1, 01:20 UTCJun 1, 01:55 UTC35m
2026-05-31 MDA1261 TSA → KNH May 31, 22:55 UTCMay 31, 23:45 UTC50m
2026-05-31 MDA1278 KNH → TSA May 31, 11:50 UTCMay 31, 12:30 UTC40m
2026-05-31 MDA1277 TSA → KNH May 31, 09:40 UTCMay 31, 10:25 UTC45m
2026-05-30 MDA1261 TSA → KNH May 30, 23:00 UTCMay 30, 23:50 UTC50m
2026-05-30 MDA1278 KNH → TSA May 30, 12:05 UTCMay 30, 12:40 UTC35m
2026-05-30 MDA1277 TSA → KNH May 30, 09:45 UTCMay 30, 10:25 UTC40m
2026-05-30 MDA372 MZG → TSA May 30, 07:40 UTCMay 30, 08:20 UTC40m
2026-05-30 MDA371 TSA → MZG May 30, 06:05 UTCMay 30, 06:50 UTC45m
2026-05-30 MDA7902 LZN → TSA May 30, 04:50 UTCMay 30, 05:05 UTC15m
2026-05-30 MDA7901 TSA → LZN May 30, 02:45 UTCMay 30, 03:05 UTC20m
2026-05-30 MDA1262 KNH → TSA May 30, 01:15 UTCMay 30, 01:50 UTC35m
2026-05-29 MDA1261 TSA → KNH May 29, 22:50 UTCMay 29, 23:35 UTC45m
2026-05-29 MDA396 TTT → TSA May 29, 12:40 UTCMay 29, 13:05 UTC25m
2026-05-29 MDA395 TSA → TTT May 29, 10:30 UTCMay 29, 10:45 UTC15m
2026-05-29 MDA1272 KNH → TSA May 29, 08:45 UTCMay 29, 09:25 UTC40m
2026-05-29 MDA1271 TSA → KNH May 29, 06:20 UTCMay 29, 07:10 UTC50m
2026-05-29 MDA2368 MZG → TSA May 29, 04:30 UTCMay 29, 05:10 UTC40m
2026-05-29 MDA2367 TSA → MZG May 29, 02:50 UTCMay 29, 03:40 UTC50m
2026-05-29 MDA2362 MZG → TSA May 29, 01:15 UTCMay 29, 01:55 UTC40m
2026-05-28 MDA2361 TSA → MZG May 28, 23:35 UTCMay 29, 00:30 UTC55m
2026-05-28 MDA1280 KNH → TSA May 28, 12:50 UTCMay 28, 13:25 UTC35m
2026-05-28 MDA1279 TSA → KNH May 28, 10:45 UTCMay 28, 11:30 UTC45m
2026-05-28 MDA374 MZG → TSA May 28, 09:00 UTCMay 28, 09:40 UTC40m
2026-05-28 MDA373 TSA → MZG May 28, 07:25 UTCMay 28, 08:10 UTC45m
2026-05-28 MDA370 MZG → TSA May 28, 05:40 UTCMay 28, 06:30 UTC50m
2026-05-28 MDA369 TSA → MZG May 28, 04:00 UTCMay 28, 04:45 UTC45m
2026-05-28 MDA1262 KNH → TSA May 28, 02:05 UTCMay 28, 03:00 UTC55m
2026-05-27 MDA1261 TSA → KNH May 27, 23:45 UTCMay 28, 00:30 UTC45m
2026-05-27 MDA2376 MZG → TSA May 27, 11:10 UTCMay 27, 12:00 UTC50m
2026-05-27 MDA2375 TSA → MZG May 27, 09:35 UTCMay 27, 10:20 UTC45m
2026-05-27 MDA2372 MZG → TSA May 27, 07:55 UTCMay 27, 08:45 UTC50m
2026-05-27 MDA2371 TSA → MZG May 27, 06:20 UTCMay 27, 07:05 UTC45m
2026-05-27 MDA2368 MZG → TSA May 27, 04:34 UTCMay 27, 05:24 UTC50m
2026-05-27 MDA2367 TSA → MZG May 27, 02:59 UTCMay 27, 03:45 UTC45m
2026-05-27 MDA2362 MZG → TSA May 27, 01:09 UTCMay 27, 02:04 UTC55m

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 B-18666 page for operator, model, and routing details .

Mode-S 899051 frequently asked

What is Mode-S code 899051?
899051 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18666.
Where is Mode-S 899051 registered?
Mode-S code 899051 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899051 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899051, octal 42310121, decimal 9,015,377.
What flights does 899051 operate?
Mode-S 899051 has broadcast 20 distinct callsigns, including MDA1261, MDA1277, MDA1262, MDA7901, MDA372.