Apparatus

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sensors Mode-S transponder

899017

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18780 · BOEING 777-200LR

Hex
899017
Octal
42310027
Decimal
9,015,319
Country
TW
Tail
B-18780
Type
B77L
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
270
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 899017.

Country allocation

The ICAO 24-bit address 899017 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
CAL5663 - 15 2026-07-26
CAL5310 - 15 2026-07-19
CAL5381 - 12 2026-07-18
CAL5309 China Airlines 12 2026-07-20
CAL5382 - 10 2026-07-17
CAL5346 - 9 2026-07-15
CAL5153 - 9 2026-06-30
CAL5345 - 8 2026-07-16
CAL5162 - 8 2026-06-26
CAL5522 China Airlines 7 2026-07-26
CAL5236 China Airlines 7 2026-05-25
CAL5161 - 7 2026-06-27
CAL5686 - 6 2026-07-02
CAL5685 - 6 2026-07-01
CAL5165 - 6 2026-06-17
CAL5154 - 6 2026-06-29
CAL5823 - 5 2026-07-25
CAL5312 China Airlines 5 2026-06-10
CAL5311 China Airlines 5 2026-06-11
CAL5235 China Airlines 5 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL5522 FRA → TPE Jul 26, 13:55 UTCJul 26, 21:45 UTC7h 50m
2026-07-26 CAL5663 DEL → FRA Jul 26, 02:15 UTCJul 26, 09:55 UTC7h 41m
2026-07-25 CAL5663 TPE → DEL Jul 25, 18:05 UTCJul 26, 00:20 UTC6h 15m
2026-07-25 CAL5824 HKG → TPE Jul 25, 11:50 UTCJul 25, 13:15 UTC1h 25m
2026-07-25 CAL5823 TPE → HKG Jul 25, 07:00 UTCJul 25, 09:20 UTC2h 20m
2026-07-25 CAL5137 LAX → TPE Jul 25, 03:55 UTCJul 25, 04:15 UTC20m
2026-07-24 CAL5137 LAX → TPE Jul 24, 15:30 UTCJul 25, 02:30 UTC11h 0m
2026-07-24 CAL5138 TPE → LAX Jul 24, 01:50 UTCJul 24, 12:35 UTC10h 45m
2026-07-24 CAL5138 TPE → LAX Jul 24, 00:25 UTCJul 24, 00:35 UTC10m
2026-07-23 CAL5826 HKG → TPE Jul 23, 19:25 UTCJul 23, 20:45 UTC1h 20m
2026-07-23 CAL5825 TPE → HKG Jul 23, 15:45 UTCJul 23, 17:05 UTC1h 20m
2026-07-23 CAL5838 HKG → TPE Jul 23, 11:55 UTCJul 23, 13:20 UTC1h 25m
2026-07-23 CAL5837 TPE → HKG Jul 23, 07:00 UTCJul 23, 08:15 UTC1h 15m
2026-07-23 CAL5225 ORD → ANC Jul 23, 01:05 UTCJul 23, 01:30 UTC25m
2026-07-22 CAL5225 ORD → ANC Jul 22, 15:45 UTCJul 22, 23:50 UTC8h 5m
2026-07-22 CAL5225 ORD → ANC Jul 22, 10:20 UTCJul 22, 13:05 UTC2h 45m
2026-07-21 CAL5226 - Jul 21, 23:05 UTCJul 22, 04:00 UTC4h 55m
2026-07-21 CAL5226 - Jul 21, 14:20 UTCJul 21, 21:05 UTC6h 45m
2026-07-21 CAL5226 - Jul 21, 12:40 UTCJul 21, 12:55 UTC15m
2026-07-21 CAL5836 HKG → TPE Jul 21, 01:15 UTCJul 21, 02:45 UTC1h 30m
2026-07-20 CAL5835 TPE → HKG Jul 20, 20:45 UTCJul 20, 22:00 UTC1h 15m
2026-07-20 CAL5309 JFK → ANC Jul 20, 09:00 UTCJul 20, 18:10 UTC9h 10m
2026-07-19 CAL5309 JFK → ANC Jul 19, 23:50 UTCJul 20, 06:55 UTC7h 5m
2026-07-19 CAL5310 YYZ → JFK Jul 19, 19:50 UTCJul 19, 20:55 UTC1h 5m
2026-07-19 CAL5310 ANC → YYZ Jul 19, 12:30 UTCJul 19, 17:55 UTC5h 25m
2026-07-19 CAL5310 TPE → ANC Jul 19, 00:35 UTCJul 19, 09:25 UTC8h 50m
2026-07-18 CAL5381 - Jul 18, 21:10 UTCJul 18, 21:35 UTC25m
2026-07-18 CAL5381 - Jul 18, 10:00 UTCJul 18, 20:00 UTC10h 0m
2026-07-18 CAL5381 - Jul 18, 02:25 UTCJul 18, 07:50 UTC5h 26m
2026-07-17 CAL5382 - Jul 17, 19:45 UTCJul 18, 00:19 UTC4h 35m
2026-07-17 CAL5382 - Jul 17, 04:49 UTCJul 17, 17:15 UTC12h 25m
2026-07-16 CAL5345 - Jul 16, 23:44 UTCJul 17, 00:10 UTC25m
2026-07-16 CAL5345 - Jul 16, 12:00 UTCJul 16, 22:40 UTC10h 40m
2026-07-16 CAL5345 - Jul 16, 04:40 UTCJul 16, 08:45 UTC4h 5m
2026-07-15 CAL5346 - Jul 15, 22:15 UTCJul 16, 02:35 UTC4h 20m
2026-07-15 CAL5346 - Jul 15, 10:10 UTCJul 15, 20:20 UTC10h 10m
2026-07-15 CAL5346 - Jul 15, 08:40 UTCJul 15, 08:50 UTC10m
2026-07-15 CAL5117 - Jul 15, 03:00 UTCJul 15, 03:20 UTC20m
2026-07-14 CAL5117 - Jul 14, 14:45 UTCJul 15, 01:45 UTC10h 59m
2026-07-13 CAL5118 - Jul 13, 23:20 UTCJul 14, 11:45 UTC12h 25m
2026-07-13 CAL5115 - Jul 13, 19:30 UTCJul 13, 20:00 UTC30m
2026-07-13 CAL5115 - Jul 13, 07:25 UTCJul 13, 18:30 UTC11h 5m
2026-07-12 CAL5116 - Jul 12, 16:01 UTCJul 13, 04:20 UTC12h 20m
2026-07-12 CAL5705 NRT → TPE Jul 12, 09:20 UTCJul 12, 12:05 UTC2h 45m
2026-07-10 CAL5706 - Jul 10, 06:15 UTCJul 10, 09:00 UTC2h 45m
2026-07-09 CAL5522 FRA → TPE Jul 9, 14:55 UTCJul 10, 03:40 UTC12h 45m
2026-07-09 CAL5663 - Jul 9, 03:40 UTCJul 9, 11:55 UTC8h 15m
2026-07-08 CAL5663 - Jul 8, 19:35 UTCJul 9, 01:45 UTC6h 10m
2026-07-08 CAL5834 HKG → TPE Jul 8, 15:50 UTCJul 8, 17:05 UTC1h 15m
2026-07-08 CAL5833 - Jul 8, 12:25 UTCJul 8, 13:40 UTC1h 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-18780 page for operator, model, and routing details .

Mode-S 899017 frequently asked

What is Mode-S code 899017?
899017 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18780.
Where is Mode-S 899017 registered?
Mode-S code 899017 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899017 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899017, octal 42310027, decimal 9,015,319.
What flights does 899017 operate?
Mode-S 899017 has broadcast 20 distinct callsigns, including CAL5663, CAL5310, CAL5381, CAL5309, CAL5382.