Apparatus

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sensors Mode-S transponder

899045

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18662 · BOEING 737-800

Hex
899045
Octal
42310105
Decimal
9,015,365
Country
TW
Tail
B-18662
Type
B738
No current signal · last broadcast 3h ago
Flights observed
406
Distinct callsigns
20
Country
TW
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 899045.

Country allocation

The ICAO 24-bit address 899045 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
MDA1276 - 49 2026-07-14
MDA1275 - 49 2026-07-14
CAL261 - 29 2026-07-13
CAL260 - 25 2026-07-13
MDA211 - 18 2026-07-13
MDA212 - 17 2026-07-14
MDA2070 - 15 2026-07-14
MDA2069 - 15 2026-07-14
MDA217 - 11 2026-07-04
MDA218 - 8 2026-07-08
MDA1858 - 7 2026-07-03
CAL923 China Airlines 7 2026-06-10
MDA2382 - 5 2026-06-27
MDA2381 - 5 2026-06-27
CAL139 - 5 2026-06-23
CAL138 - 5 2026-06-23
MDA798 - 4 2026-07-03
MDA797 - 4 2026-07-03
MDA769 Mandarin Airlines 4 2026-04-16
MDA356 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL7848 TSA → TPE Jul 14, 13:05 UTCJul 14, 13:25 UTC20m
2026-07-14 MDA1276 - Jul 14, 11:40 UTCJul 14, 12:15 UTC35m
2026-07-14 MDA1275 - Jul 14, 09:35 UTCJul 14, 10:05 UTC30m
2026-07-14 MDA2070 - Jul 14, 07:25 UTCJul 14, 08:15 UTC50m
2026-07-14 MDA2069 - Jul 14, 05:25 UTCJul 14, 05:55 UTC30m
2026-07-14 MDA212 - Jul 14, 02:55 UTCJul 14, 03:35 UTC40m
2026-07-13 MDA211 - Jul 13, 23:05 UTCJul 13, 23:35 UTC30m
2026-07-13 MDA1276 - Jul 13, 11:35 UTCJul 13, 12:05 UTC30m
2026-07-13 MDA1275 - Jul 13, 09:05 UTCJul 13, 09:40 UTC35m
2026-07-13 CAL261 GMP → TSA Jul 13, 05:10 UTCJul 13, 07:20 UTC2h 10m
2026-07-13 CAL260 TSA → GMP Jul 13, 01:30 UTCJul 13, 03:40 UTC2h 10m
2026-07-12 MDA1276 - Jul 12, 11:20 UTCJul 12, 11:50 UTC30m
2026-07-12 MDA1275 - Jul 12, 09:10 UTCJul 12, 09:40 UTC30m
2026-07-12 CAL261 GMP → TSA Jul 12, 05:35 UTCJul 12, 07:45 UTC2h 10m
2026-07-12 CAL260 - Jul 12, 03:25 UTCJul 12, 04:05 UTC40m
2026-07-12 CAL260 - Jul 12, 01:55 UTCJul 12, 02:25 UTC30m
2026-07-11 CAL2261 GMP → TSA Jul 11, 22:35 UTCJul 12, 00:50 UTC2h 15m
2026-07-10 CAL2260 TSA → GMP Jul 10, 04:40 UTCJul 10, 06:50 UTC2h 10m
2026-07-10 MDA212 - Jul 10, 02:30 UTCJul 10, 03:25 UTC55m
2026-07-09 MDA211 - Jul 9, 23:05 UTCJul 10, 00:10 UTC1h 5m
2026-07-09 MDA1276 - Jul 9, 11:30 UTCJul 9, 12:05 UTC35m
2026-07-09 MDA1275 - Jul 9, 09:05 UTCJul 9, 09:35 UTC30m
2026-07-09 CAL261 GMP → TSA Jul 9, 05:05 UTCJul 9, 07:15 UTC2h 10m
2026-07-09 CAL260 TSA → GMP Jul 9, 01:20 UTCJul 9, 03:35 UTC2h 15m
2026-07-08 MDA218 TSA → TSA Jul 8, 05:25 UTCJul 8, 12:30 UTC7h 5m
2026-07-07 MDA212 TSA → TSA Jul 7, 23:20 UTCJul 8, 03:25 UTC4h 5m
2026-07-07 MDA1276 - Jul 7, 11:20 UTCJul 7, 11:50 UTC30m
2026-07-07 MDA1275 - Jul 7, 09:10 UTCJul 7, 09:45 UTC35m
2026-07-07 MDA2070 - Jul 7, 07:40 UTCJul 7, 08:05 UTC25m
2026-07-07 MDA2069 - Jul 7, 05:20 UTCJul 7, 05:50 UTC30m
2026-07-07 MDA212 - Jul 7, 02:35 UTCJul 7, 03:25 UTC50m
2026-07-06 MDA211 - Jul 6, 23:10 UTCJul 6, 23:55 UTC45m
2026-07-06 MDA1276 - Jul 6, 11:35 UTCJul 6, 12:10 UTC35m
2026-07-06 MDA1275 - Jul 6, 09:15 UTCJul 6, 09:45 UTC30m
2026-07-06 CAL261 GMP → TSA Jul 6, 05:05 UTCJul 6, 07:15 UTC2h 10m
2026-07-06 CAL260 TSA → GMP Jul 6, 01:25 UTCJul 6, 03:40 UTC2h 15m
2026-07-05 MDA1276 - Jul 5, 11:20 UTCJul 5, 11:45 UTC25m
2026-07-05 MDA1275 - Jul 5, 09:15 UTCJul 5, 09:45 UTC30m
2026-07-05 CAL261 GMP → TSA Jul 5, 05:10 UTCJul 5, 07:15 UTC2h 5m
2026-07-05 CAL260 TSA → GMP Jul 5, 01:30 UTCJul 5, 03:40 UTC2h 10m
2026-07-04 MDA218 - Jul 4, 11:50 UTCJul 4, 12:15 UTC25m
2026-07-04 MDA217 - Jul 4, 05:45 UTCJul 4, 06:05 UTC20m
2026-07-04 MDA1276 - Jul 4, 03:25 UTCJul 4, 04:05 UTC40m
2026-07-04 MDA1275 - Jul 4, 01:10 UTCJul 4, 01:40 UTC30m
2026-07-03 CAL7853 - Jul 3, 23:10 UTCJul 3, 23:30 UTC20m
2026-07-03 MDA798 - Jul 3, 13:55 UTCJul 3, 14:15 UTC20m
2026-07-03 MDA355 - Jul 3, 12:20 UTCJul 3, 12:50 UTC30m
2026-07-03 MDA356 - Jul 3, 10:50 UTCJul 3, 11:15 UTC25m
2026-07-03 MDA797 - Jul 3, 09:20 UTCJul 3, 09:40 UTC20m
2026-07-03 MDA1858 - Jul 3, 00:25 UTCJul 3, 07:40 UTC7h 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 B-18662 page for operator, model, and routing details .

Mode-S 899045 frequently asked

What is Mode-S code 899045?
899045 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18662.
Where is Mode-S 899045 registered?
Mode-S code 899045 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899045 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899045, octal 42310105, decimal 9,015,365.
What flights does 899045 operate?
Mode-S 899045 has broadcast 20 distinct callsigns, including MDA1276, MDA1275, CAL261, CAL260, MDA211.