Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7705C1

ICAO 24-bit transponder address · allocated to Sri Lanka

Currently assigned to 4R-ANA · AIRBUS A-320neo

Hex
7705C1
Octal
35602701
Decimal
7,800,257
Country
LK
Tail
4R-ANA
Type
A20N
No current signal · last broadcast 11h ago
Flights observed
115
Distinct callsigns
20
Country
LK
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 7705C1.

Country allocation

The ICAO 24-bit address 7705C1 falls within the block assigned to Sri Lanka (LK) by ICAO Annex 10, Volume III. Every aircraft registered in Sri Lanka 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
ALK182 SriLankan Airlines 13 2026-05-28
ALK884 SriLankan Airlines 12 2026-05-23
ALK181 SriLankan Airlines 12 2026-05-28
ALK885 SriLankan Airlines 8 2026-05-23
ALK880 SriLankan Airlines 8 2026-05-26
ALK144 SriLankan Airlines 7 2026-05-28
ALK143 SriLankan Airlines 7 2026-05-28
ALK195 SriLankan Airlines 5 2026-05-11
ALK196 SriLankan Airlines 4 2026-05-11
ALK364 SriLankan Airlines 3 2026-04-26
ALK318 SriLankan Airlines 3 2026-05-01
ALK191 SriLankan Airlines 3 2026-05-15
ALK166 SriLankan Airlines 3 2026-05-07
ALK881 SriLankan Airlines 2 2026-05-19
ALK365 SriLankan Airlines 2 2026-04-26
ALK315 SriLankan Airlines 2 2026-05-04
ALK314 SriLankan Airlines 2 2026-05-04
ALK192 SriLankan Airlines 2 2026-05-16
ALK152 SriLankan Airlines 2 2026-05-22
ALK405 SriLankan Airlines 1 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ALK403 BKK → CMB May 30, 01:00 UTCMay 30, 01:20 UTC20m
2026-05-29 ALK402 CMB → BKK May 29, 16:10 UTCMay 29, 23:15 UTC7h 5m
2026-05-29 ALK171 CMB → BLR May 29, 01:10 UTCMay 29, 15:00 UTC13h 50m
2026-05-28 ALK144 BOM → CMB May 28, 16:15 UTCMay 28, 22:55 UTC6h 40m
2026-05-28 ALK144 BOM → CMB May 28, 15:35 UTCMay 28, 15:45 UTC10m
2026-05-28 ALK143 CMB → BOM May 28, 13:55 UTCMay 28, 14:30 UTC35m
2026-05-28 ALK182 KTM → CMB May 28, 07:35 UTCMay 28, 13:00 UTC5h 25m
2026-05-28 ALK181 CMB → KTM May 28, 04:20 UTCMay 28, 05:55 UTC1h 35m
2026-05-27 ALK182 KTM → CMB May 27, 08:35 UTCMay 28, 05:55 UTC21h 20m
2026-05-26 ALK181 CMB → KTM May 26, 18:34 UTCMay 27, 06:25 UTC11h 50m
2026-05-26 ALK880 CMB → CAN May 26, 13:50 UTCMay 26, 14:00 UTC10m
2026-05-26 ALK880 CMB → CAN May 26, 00:54 UTCMay 26, 12:20 UTC11h 25m
2026-05-25 ALK182 KTM → CMB May 25, 07:50 UTCMay 25, 23:19 UTC15h 29m
2026-05-25 ALK181 CMB → KTM May 25, 04:25 UTCMay 25, 06:05 UTC1h 40m
2026-05-24 ALK181 CMB → KTM May 24, 07:05 UTCMay 25, 06:05 UTC23h 0m
2026-05-23 ALK885 CAN → CMB May 23, 21:45 UTCMay 24, 05:35 UTC7h 50m
2026-05-23 ALK884 CMB → CAN May 23, 17:30 UTCMay 23, 17:50 UTC20m
2026-05-23 ALK884 CMB → CAN May 23, 15:15 UTCMay 23, 16:00 UTC45m
2026-05-22 ALK152 KHI → CMB May 22, 11:20 UTCMay 23, 05:10 UTC17h 50m
2026-05-22 ALK152 KHI → CMB May 22, 08:40 UTCMay 23, 05:10 UTC20h 29m
2026-05-21 ALK885 CAN → CMB May 21, 21:30 UTCMay 22, 06:20 UTC8h 50m
2026-05-21 ALK884 CMB → CAN May 21, 17:20 UTCMay 21, 17:35 UTC15m
2026-05-21 ALK884 CMB → CAN May 21, 15:00 UTCMay 21, 15:45 UTC45m
2026-05-21 ALK182 KTM → CMB May 21, 07:40 UTCMay 21, 07:50 UTC10m
2026-05-19 ALK881 CAN → CMB May 19, 18:50 UTCMay 19, 20:55 UTC2h 5m
2026-05-19 ALK880 CMB → CAN May 19, 13:25 UTCMay 19, 13:40 UTC15m
2026-05-19 ALK880 CMB → CAN May 19, 11:20 UTCMay 19, 11:55 UTC35m
2026-05-19 ALK162 TRV → CMB May 19, 04:55 UTCMay 19, 05:10 UTC15m
2026-05-19 ALK161 CMB → TRV May 19, 03:00 UTCMay 19, 03:30 UTC30m
2026-05-18 ALK218 DOH → CMB May 18, 13:15 UTCMay 18, 23:55 UTC10h 39m
2026-05-17 ALK182 KTM → CMB May 17, 10:00 UTCMay 17, 10:15 UTC15m
2026-05-17 ALK182 KTM → CMB May 17, 07:45 UTCMay 17, 07:55 UTC10m
2026-05-16 ALK885 CAN → CMB May 16, 21:15 UTCMay 17, 04:45 UTC7h 30m
2026-05-16 ALK884 CMB → CAN May 16, 17:15 UTCMay 16, 17:25 UTC10m
2026-05-16 ALK192 DEL → CMB May 16, 00:15 UTCMay 16, 15:35 UTC15h 21m
2026-05-15 ALK191 CMB → DEL May 15, 19:55 UTCMay 15, 22:30 UTC2h 35m
2026-05-13 ALK405 BKK → CMB May 13, 08:30 UTCMay 13, 08:55 UTC25m
2026-05-13 ALK404 CMB → BKK May 13, 05:35 UTCMay 13, 06:05 UTC30m
2026-05-12 ALK881 CAN → CMB May 12, 20:25 UTCMay 12, 21:10 UTC45m
2026-05-12 ALK880 CMB → CAN May 12, 16:25 UTCMay 12, 16:40 UTC15m
2026-05-12 ALK880 CMB → CAN May 12, 07:15 UTCMay 12, 15:01 UTC7h 45m
2026-05-11 ALK196 DEL → CMB May 11, 13:35 UTCMay 12, 05:30 UTC15h 56m
2026-05-11 ALK195 CMB → DEL May 11, 09:20 UTCMay 11, 12:00 UTC2h 40m
2026-05-10 ALK182 KTM → CMB May 10, 07:45 UTCMay 10, 10:10 UTC2h 25m
2026-05-09 ALK181 CMB → KTM May 9, 21:34 UTCMay 10, 06:00 UTC8h 25m
2026-05-09 ALK884 CMB → CAN May 9, 17:15 UTCMay 9, 17:35 UTC20m
2026-05-09 ALK192 DEL → CMB May 9, 00:40 UTCMay 9, 15:50 UTC15h 10m
2026-05-08 ALK191 CMB → DEL May 8, 08:40 UTCMay 8, 23:15 UTC14h 35m
2026-05-07 ALK885 CAN → CMB May 7, 22:20 UTCMay 8, 21:05 UTC22h 45m
2026-05-07 ALK885 CAN → CMB May 7, 20:55 UTCMay 8, 16:55 UTC20h 0m

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 4R-ANA page for operator, model, and routing details .

Mode-S 7705C1 frequently asked

What is Mode-S code 7705C1?
7705C1 is an ICAO 24-bit transponder address. Allocated to Sri Lanka. Assigned to 4R-ANA.
Where is Mode-S 7705C1 registered?
Mode-S code 7705C1 is allocated to Sri Lanka (LK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7705C1 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 7705C1, octal 35602701, decimal 7,800,257.
What flights does 7705C1 operate?
Mode-S 7705C1 has broadcast 20 distinct callsigns, including ALK182, ALK884, ALK181, ALK885, ALK880.