sensors Mode-S transponder

515309

ICAO 24-bit transponder address · allocated to Tajikistan

Currently assigned to EY-777 · BOEING 737-800

Hex
515309
Octal
24251411
Decimal
5,329,673
Country
TJ
Tail
EY-777
Type
B738
No current signal · last broadcast 16h ago
Flights observed
52
Distinct callsigns
20
Country
TJ
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 515309.

Country allocation

The ICAO 24-bit address 515309 falls within the block assigned to Tajikistan (TJ) by ICAO Annex 10, Volume III. Every aircraft registered in Tajikistan 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
SMR103 Somon Air 10 2026-05-29
SMR121 Somon Air 6 2026-05-01
SMR104 Somon Air 4 2026-05-29
SMR6424 - 3 2026-05-18
SMR6410 - 3 2026-05-11
SMR224 - 3 2026-05-04
SMR122 Somon Air 3 2026-05-02
SMR6420 - 2 2026-05-16
SMR6418 - 2 2026-05-15
SMR209 Somon Air 2 2026-05-19
SMR109 Somon Air 2 2026-04-13
SMR6425 Somon Air 1 2026-05-18
SMR6422 Somon Air 1 2026-05-16
SMR6416 - 1 2026-05-13
SMR6411 Somon Air 1 2026-05-11
SMR6407 Somon Air 1 2026-05-09
SMR6402 Somon Air 1 2026-05-07
SMR214 Somon Air 1 2026-05-21
SMR213 Somon Air 1 2026-05-03
SMR110 - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SMR104 IST → DYU May 29, 08:05 UTCMay 29, 10:00 UTC1h 55m
2026-05-29 SMR103 DYU → IST May 29, 05:55 UTCMay 29, 06:25 UTC30m
2026-05-29 SMR103 DYU → IST May 29, 03:50 UTCMay 29, 05:15 UTC1h 25m
2026-05-26 SMR104 IST → DYU May 26, 08:30 UTCMay 26, 10:29 UTC2h 0m
2026-05-26 SMR103 DYU → IST May 26, 06:14 UTCMay 26, 06:25 UTC10m
2026-05-25 SMR103 DYU → IST May 25, 11:10 UTCMay 26, 05:30 UTC18h 19m
2026-05-21 SMR214 KJA → DYU May 21, 08:35 UTCMay 21, 13:50 UTC5h 15m
2026-05-19 SMR209 DYU → SVX May 19, 09:00 UTCMay 19, 21:00 UTC12h 0m
2026-05-18 SMR6425 DWC → JED May 18, 19:55 UTCMay 18, 20:10 UTC15m
2026-05-18 SMR6424 - May 18, 01:15 UTCMay 18, 01:40 UTC25m
2026-05-17 SMR6424 - May 17, 04:30 UTCMay 18, 01:40 UTC21h 10m
2026-05-17 SMR6424 - May 17, 02:20 UTCMay 18, 01:40 UTC23h 20m
2026-05-16 SMR6422 JED → DYU May 16, 20:30 UTCMay 17, 04:30 UTC8h 0m
2026-05-16 SMR6420 - May 16, 02:25 UTCMay 16, 16:05 UTC13h 41m
2026-05-15 SMR6420 - May 15, 17:30 UTCMay 16, 16:05 UTC22h 36m
2026-05-15 SMR6418 - May 15, 01:25 UTCMay 15, 17:35 UTC16h 9m
2026-05-14 SMR6418 - May 14, 04:55 UTCMay 15, 04:05 UTC23h 10m
2026-05-13 SMR6416 - May 13, 16:00 UTCMay 14, 05:00 UTC13h 0m
2026-05-13 - - May 13, 01:35 UTCMay 13, 16:00 UTC14h 25m
2026-05-12 - - May 12, 16:05 UTCMay 13, 01:40 UTC9h 35m
2026-05-11 SMR6411 DYU → KRW May 11, 16:20 UTCMay 12, 16:05 UTC23h 46m
2026-05-11 SMR6410 - May 11, 01:05 UTCMay 11, 16:35 UTC15h 30m
2026-05-10 SMR6410 - May 10, 20:05 UTCMay 11, 16:35 UTC20h 30m
2026-05-10 SMR6410 - May 10, 15:55 UTCMay 11, 01:34 UTC9h 40m
2026-05-09 SMR6407 DYU → KRW May 9, 20:34 UTCMay 10, 20:05 UTC23h 30m
2026-05-07 SMR6402 JED → DYU May 7, 01:30 UTCMay 7, 16:10 UTC14h 40m
2026-05-06 SMR106 DXB → DYU May 6, 01:40 UTCMay 6, 02:01 UTC20m
2026-05-05 SMR209 DYU → SVX May 5, 09:00 UTCMay 5, 20:40 UTC11h 40m
2026-05-04 SMR224 - May 4, 10:20 UTCMay 5, 09:10 UTC22h 51m
2026-05-04 SMR224 - May 4, 06:40 UTCMay 4, 11:15 UTC4h 35m
2026-05-03 SMR224 - May 3, 12:20 UTCMay 4, 11:15 UTC22h 55m
2026-05-03 SMR213 DYU → KJA May 3, 08:45 UTCMay 4, 07:15 UTC22h 30m
2026-05-02 SMR122 MUC → DYU May 2, 18:20 UTCMay 3, 12:45 UTC18h 24m
2026-05-02 SMR122 MUC → DYU May 2, 17:45 UTCMay 3, 12:45 UTC18h 59m
2026-05-01 SMR121 TZX → MUC May 1, 10:05 UTCMay 2, 03:50 UTC17h 45m
2026-04-30 SMR103 DYU → IST Apr 30, 11:55 UTCMay 1, 05:15 UTC17h 20m
2026-04-30 SMR103 DYU → IST Apr 30, 08:20 UTCMay 1, 05:15 UTC20h 55m
2026-04-30 SMR103 DYU → IST Apr 30, 08:10 UTCMay 1, 05:15 UTC21h 5m
2026-04-21 SMR104 IST → DYU Apr 21, 10:05 UTCApr 21, 11:00 UTC55m
2026-04-20 SMR103 DYU → IST Apr 20, 10:20 UTCApr 21, 05:10 UTC18h 51m
2026-04-20 SMR103 DYU → IST Apr 20, 09:50 UTCApr 21, 05:10 UTC19h 20m
2026-04-20 SMR103 DYU → IST Apr 20, 06:55 UTCApr 21, 05:10 UTC22h 16m
2026-04-18 SMR122 - Apr 18, 16:20 UTCApr 18, 20:05 UTC3h 45m
2026-04-18 SMR121 TZX → MUC Apr 18, 03:25 UTCApr 18, 04:15 UTC50m
2026-04-18 SMR121 TZX → MUC Apr 18, 02:25 UTCApr 18, 03:20 UTC55m
2026-04-18 SMR121 TZX → MUC Apr 18, 00:50 UTCApr 18, 01:15 UTC25m
2026-04-17 SMR121 TZX → MUC Apr 17, 23:25 UTCApr 18, 00:05 UTC40m
2026-04-17 SMR121 TZX → MUC Apr 17, 22:50 UTCApr 17, 23:20 UTC30m
2026-04-14 SMR104 - Apr 14, 09:10 UTCApr 14, 09:50 UTC40m
2026-04-13 SMR110 - Apr 13, 11:15 UTCApr 13, 11:50 UTC35m

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 EY-777 page for operator, model, and routing details .

Mode-S 515309 frequently asked

What is Mode-S code 515309?
515309 is an ICAO 24-bit transponder address. Allocated to Tajikistan. Assigned to EY-777.
Where is Mode-S 515309 registered?
Mode-S code 515309 is allocated to Tajikistan (TJ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 515309 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 515309, octal 24251411, decimal 5,329,673.
What flights does 515309 operate?
Mode-S 515309 has broadcast 20 distinct callsigns, including SMR103, SMR121, SMR104, SMR6424, SMR6410.