Apparatus

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sensors Mode-S transponder

704B21

ICAO 24-bit transponder address · allocated to Myanmar

Currently assigned to XY-AJO · ATR-72-600

Hex
704B21
Octal
34045441
Decimal
7,359,265
Country
MM
Tail
XY-AJO
Type
AT76
No current signal · last broadcast 5h ago
Flights observed
45
Distinct callsigns
7
Country
MM
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 704B21.

Country allocation

The ICAO 24-bit address 704B21 falls within the block assigned to Myanmar (MM) by ICAO Annex 10, Volume III. Every aircraft registered in Myanmar 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 7 distinct

Callsign Airline Flights Last seen
MYP675 - 21 2026-06-24
MYP677 - 18 2026-06-24
MYP958 Mann Yadanarpon Airlines 2 2026-05-26
MYP963 - 1 2026-04-25
MYP959 - 1 2026-05-26
MYP676 - 1 2026-06-07
MYP222 Mann Yadanarpon Airlines 1 2026-05-27

Recent flights last 45

DateFlightRouteTakeoffLandingDuration
2026-06-24 MYP677 - Jun 24, 11:24 UTCJun 24, 11:39 UTC15m
2026-06-24 MYP675 - Jun 24, 05:09 UTCJun 24, 05:24 UTC15m
2026-06-23 MYP677 - Jun 23, 10:59 UTCJun 23, 11:19 UTC20m
2026-06-23 MYP675 - Jun 23, 05:29 UTCJun 23, 05:39 UTC10m
2026-06-22 MYP675 - Jun 22, 06:25 UTCJun 22, 06:39 UTC15m
2026-06-21 MYP677 - Jun 21, 11:59 UTCJun 21, 12:14 UTC15m
2026-06-20 MYP677 - Jun 20, 10:44 UTCJun 20, 11:05 UTC20m
2026-06-20 MYP675 - Jun 20, 04:29 UTCJun 20, 04:44 UTC15m
2026-06-19 MYP677 - Jun 19, 10:54 UTCJun 19, 11:09 UTC15m
2026-06-18 MYP677 - Jun 18, 12:05 UTCJun 18, 12:20 UTC15m
2026-06-18 MYP675 - Jun 18, 05:20 UTCJun 18, 05:35 UTC15m
2026-06-17 MYP677 - Jun 17, 11:20 UTCJun 17, 11:40 UTC20m
2026-06-17 MYP675 - Jun 17, 04:55 UTCJun 17, 05:10 UTC15m
2026-06-15 MYP677 - Jun 15, 11:30 UTCJun 15, 11:49 UTC20m
2026-06-15 MYP675 - Jun 15, 05:04 UTCJun 15, 05:20 UTC15m
2026-06-14 MYP677 - Jun 14, 11:00 UTCJun 14, 11:15 UTC15m
2026-06-14 MYP675 - Jun 14, 04:40 UTCJun 14, 04:55 UTC15m
2026-06-13 MYP677 - Jun 13, 10:55 UTCJun 13, 11:10 UTC15m
2026-06-13 MYP675 - Jun 13, 04:30 UTCJun 13, 04:45 UTC15m
2026-06-12 MYP677 - Jun 12, 11:20 UTCJun 12, 11:35 UTC15m
2026-06-12 MYP675 - Jun 12, 04:40 UTCJun 12, 04:50 UTC10m
2026-06-11 MYP677 - Jun 11, 11:55 UTCJun 11, 12:15 UTC20m
2026-06-11 MYP675 - Jun 11, 05:10 UTCJun 11, 05:25 UTC15m
2026-06-10 MYP677 - Jun 10, 11:50 UTCJun 10, 12:10 UTC20m
2026-06-10 MYP675 - Jun 10, 05:10 UTCJun 10, 05:25 UTC15m
2026-06-09 MYP677 - Jun 9, 11:25 UTCJun 9, 11:45 UTC20m
2026-06-09 MYP675 - Jun 9, 05:50 UTCJun 9, 06:00 UTC10m
2026-06-08 MYP675 - Jun 8, 06:35 UTCJun 8, 06:50 UTC15m
2026-06-07 MYP677 - Jun 7, 11:40 UTCJun 7, 11:55 UTC15m
2026-06-07 MYP676 - Jun 7, 08:30 UTCJun 7, 08:40 UTC10m
2026-06-07 MYP675 - Jun 7, 06:00 UTCJun 7, 06:20 UTC20m
2026-06-07 MYP675 - Jun 7, 04:55 UTCJun 7, 05:10 UTC15m
2026-06-01 MYP677 - Jun 1, 11:45 UTCJun 1, 12:00 UTC15m
2026-05-27 MYP222 THL → HEH May 27, 03:39 UTCMay 27, 03:54 UTC15m
2026-05-26 MYP959 - May 26, 11:20 UTCMay 26, 11:34 UTC15m
2026-05-26 MYP958 KHM → MDL May 26, 08:24 UTCMay 26, 08:39 UTC15m
2026-05-22 MYP675 - May 22, 05:35 UTCMay 22, 05:50 UTC15m
2026-05-20 MYP675 - May 20, 05:05 UTCMay 20, 05:15 UTC10m
2026-05-14 MYP677 - May 14, 15:35 UTCMay 14, 15:50 UTC15m
2026-05-14 MYP675 - May 14, 08:50 UTCMay 14, 09:00 UTC10m
2026-05-10 MYP958 KHM → MDL May 10, 11:10 UTCMay 10, 11:20 UTC10m
2026-05-08 MYP675 - May 8, 04:29 UTCMay 8, 04:44 UTC15m
2026-05-03 MYP677 - May 3, 11:40 UTCMay 3, 12:00 UTC20m
2026-04-30 MYP675 - Apr 30, 05:00 UTCApr 30, 05:10 UTC10m
2026-04-25 MYP963 - Apr 25, 08:30 UTCApr 25, 08:45 UTC15m

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 XY-AJO page for operator, model, and routing details .

Mode-S 704B21 frequently asked

What is Mode-S code 704B21?
704B21 is an ICAO 24-bit transponder address. Allocated to Myanmar. Assigned to XY-AJO.
Where is Mode-S 704B21 registered?
Mode-S code 704B21 is allocated to Myanmar (MM). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 704B21 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 704B21, octal 34045441, decimal 7,359,265.
What flights does 704B21 operate?
Mode-S 704B21 has broadcast 7 distinct callsigns, including MYP675, MYP677, MYP958, MYP963, MYP959.