Apparatus

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sensors Mode-S transponder

899046

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18663 · BOEING 737-800

Hex
899046
Octal
42310106
Decimal
9,015,366
Country
TW
Tail
B-18663
Type
B738
Broadcasting now · callsign MDA1858 · 7,375 ft
Flights observed
362
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 14:30 UTC

Current position

899046 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 899046 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
CAL132 China Airlines 27 2026-07-24
CAL585 - 25 2026-07-12
CAL586 - 22 2026-07-12
CAL199 China Airlines 21 2026-07-26
CAL915 China Airlines 20 2026-06-12
CAL133 China Airlines 20 2026-07-24
CAL839 China Airlines 17 2026-07-25
CAL138 China Airlines 17 2026-07-23
CAL840 China Airlines 16 2026-07-25
CAL198 China Airlines 16 2026-07-26
CAL139 China Airlines 16 2026-07-23
CAL583 China Airlines 15 2026-07-26
CAL916 China Airlines 12 2026-06-12
CAL923 - 9 2026-07-16
CAL581 - 9 2026-06-22
CAL167 China Airlines 9 2026-07-24
CAL166 China Airlines 8 2026-07-23
CAL582 - 6 2026-07-03
CAL924 - 5 2026-07-16
CAL601 China Airlines 5 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL583 KHH → PVG Jul 26, 09:10 UTCJul 26, 14:20 UTC5h 10m
2026-07-26 CAL199 KMJ → KHH Jul 26, 05:25 UTCJul 26, 07:00 UTC1h 36m
2026-07-26 CAL199 KMJ → KHH Jul 26, 04:45 UTCJul 26, 04:55 UTC10m
2026-07-26 CAL198 KHH → KMJ Jul 26, 01:10 UTCJul 26, 02:15 UTC1h 5m
2026-07-25 CAL840 BKK → KHH Jul 25, 11:45 UTCJul 25, 15:15 UTC3h 30m
2026-07-25 CAL839 KHH → BKK Jul 25, 06:45 UTCJul 25, 10:10 UTC3h 25m
2026-07-25 CAL199 KMJ → KHH Jul 25, 04:30 UTCJul 25, 05:15 UTC45m
2026-07-25 CAL199 KMJ → KHH Jul 25, 03:05 UTCJul 25, 03:15 UTC10m
2026-07-24 CAL198 KHH → KMJ Jul 24, 23:20 UTCJul 25, 00:00 UTC40m
2026-07-24 CAL133 OKA → KHH Jul 24, 11:30 UTCJul 24, 12:15 UTC45m
2026-07-24 CAL132 KHH → OKA Jul 24, 09:20 UTCJul 24, 09:30 UTC10m
2026-07-24 CAL132 KHH → OKA Jul 24, 08:05 UTCJul 24, 08:25 UTC20m
2026-07-24 CAL167 KIX → KHH Jul 24, 03:25 UTCJul 24, 06:05 UTC2h 40m
2026-07-23 CAL166 KHH → KIX Jul 23, 23:05 UTCJul 24, 01:40 UTC2h 35m
2026-07-23 CAL583 KHH → PVG Jul 23, 08:55 UTCJul 23, 14:35 UTC5h 40m
2026-07-23 CAL139 FUK → KHH Jul 23, 03:20 UTCJul 23, 05:40 UTC2h 20m
2026-07-23 CAL138 KHH → FUK Jul 23, 00:55 UTCJul 23, 01:15 UTC20m
2026-07-22 CAL138 KHH → FUK Jul 22, 23:10 UTCJul 22, 23:50 UTC40m
2026-07-22 CAL167 KIX → KHH Jul 22, 03:45 UTCJul 22, 14:40 UTC10h 55m
2026-07-21 CAL166 KHH → KIX Jul 21, 23:20 UTCJul 22, 01:55 UTC2h 35m
2026-07-21 CAL133 OKA → KHH Jul 21, 11:55 UTCJul 21, 12:20 UTC25m
2026-07-21 CAL132 KHH → OKA Jul 21, 08:10 UTCJul 21, 08:40 UTC30m
2026-07-21 CAL139 FUK → KHH Jul 21, 03:35 UTCJul 21, 06:00 UTC2h 25m
2026-07-20 CAL138 KHH → FUK Jul 20, 23:05 UTCJul 21, 01:10 UTC2h 4m
2026-07-20 CAL583 KHH → PVG Jul 20, 09:00 UTCJul 20, 14:20 UTC5h 20m
2026-07-20 CAL167 KIX → KHH Jul 20, 03:35 UTCJul 20, 06:20 UTC2h 45m
2026-07-19 CAL166 KHH → KIX Jul 19, 23:15 UTCJul 20, 01:55 UTC2h 40m
2026-07-19 CAL583 KHH → KHH Jul 19, 08:55 UTCJul 19, 14:25 UTC5h 30m
2026-07-19 CAL199 - Jul 19, 06:05 UTCJul 19, 07:00 UTC55m
2026-07-19 CAL198 - Jul 19, 01:05 UTCJul 19, 01:45 UTC40m
2026-07-18 CAL758 - Jul 18, 13:45 UTCJul 18, 14:30 UTC45m
2026-07-18 CAL758 - Jul 18, 10:35 UTCJul 18, 10:45 UTC10m
2026-07-18 CAL757 - Jul 18, 05:25 UTCJul 18, 09:10 UTC3h 45m
2026-07-18 MDA984 HKG → KHH Jul 18, 02:45 UTCJul 18, 04:00 UTC1h 16m
2026-07-17 MDA983 - Jul 17, 23:55 UTCJul 18, 01:00 UTC1h 5m
2026-07-17 CAL7843 TPE → KHH Jul 17, 08:35 UTCJul 17, 09:20 UTC45m
2026-07-16 CAL924 HKG → TPE Jul 16, 13:40 UTCJul 16, 15:19 UTC1h 40m
2026-07-16 CAL923 - Jul 16, 10:59 UTCJul 16, 12:09 UTC1h 10m
2026-07-14 CAL862 - Jul 14, 23:50 UTCJul 15, 07:45 UTC7h 55m
2026-07-12 CAL7898 KHH → TPE Jul 12, 13:20 UTCJul 12, 14:05 UTC45m
2026-07-12 CAL133 - Jul 12, 11:50 UTCJul 12, 12:10 UTC20m
2026-07-12 CAL132 - Jul 12, 08:05 UTCJul 12, 08:25 UTC20m
2026-07-12 CAL586 - Jul 12, 04:30 UTCJul 12, 04:55 UTC25m
2026-07-12 CAL586 - Jul 12, 03:40 UTCJul 12, 03:50 UTC10m
2026-07-12 CAL585 - Jul 12, 01:25 UTCJul 12, 01:40 UTC15m
2026-07-12 CAL585 - Jul 12, 00:35 UTCJul 12, 00:50 UTC15m
2026-07-11 CAL3139 - Jul 11, 05:40 UTCJul 11, 08:05 UTC2h 25m
2026-07-09 CAL138 - Jul 9, 23:15 UTCJul 10, 01:15 UTC2h 0m
2026-07-09 CAL583 KHH → KHH Jul 9, 09:05 UTCJul 9, 14:40 UTC5h 35m
2026-07-09 CAL586 - Jul 9, 05:00 UTCJul 9, 06:05 UTC1h 5m

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-18663 page for operator, model, and routing details .

Mode-S 899046 frequently asked

What is Mode-S code 899046?
899046 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18663.
Where is Mode-S 899046 registered?
Mode-S code 899046 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899046 broadcasting right now?
Yes. Mode-S 899046 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899046, octal 42310106, decimal 9,015,366.
What flights does 899046 operate?
Mode-S 899046 has broadcast 20 distinct callsigns, including CAL132, CAL585, CAL586, CAL199, CAL915.