Apparatus

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sensors Mode-S transponder

70204B

ICAO 24-bit transponder address · allocated to Bangladesh

Currently assigned to S2-AHN · BOEING 777-300ER

Hex
70204B
Octal
34020113
Decimal
7,348,299
Country
BD
Tail
S2-AHN
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
168
Distinct callsigns
20
Country
BD
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 70204B.

Country allocation

The ICAO 24-bit address 70204B falls within the block assigned to Bangladesh (BD) by ICAO Annex 10, Volume III. Every aircraft registered in Bangladesh 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
BBC236 - 17 2026-06-25
BBC136 - 15 2026-07-12
BBC332 - 13 2026-06-30
BBC336 - 11 2026-07-12
BBC135 - 11 2026-07-12
BBC532 Biman Bangladesh Airlines 10 2026-05-15
BBC349 - 8 2026-07-08
BBC335 Biman Bangladesh Airlines 8 2026-07-07
BBC531 Biman Bangladesh Airlines 7 2026-06-02
BBC350 - 7 2026-07-08
BBC339 - 7 2026-07-10
BBC338 - 7 2026-06-25
BBC331 - 7 2026-06-30
BBC235 - 6 2026-07-13
BBC340 - 5 2026-07-05
BBC137 - 4 2026-06-25
BBC722 - 2 2026-07-09
BBC721 - 2 2026-07-05
BBC540 - 2 2026-07-06
BBC538 Biman Bangladesh Airlines 2 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BBC235 - Jul 13, 13:50 UTCJul 14, 00:45 UTC10h 55m
2026-07-13 BBC235 - Jul 13, 11:30 UTCJul 13, 11:45 UTC15m
2026-07-12 BBC336 - Jul 12, 14:20 UTCJul 13, 05:10 UTC14h 50m
2026-07-12 BBC135 - Jul 12, 12:30 UTCJul 12, 12:45 UTC15m
2026-07-12 BBC136 - Jul 12, 07:10 UTCJul 12, 07:40 UTC30m
2026-07-11 BBC136 - Jul 11, 13:50 UTCJul 12, 04:40 UTC14h 50m
2026-07-10 BBC339 - Jul 10, 21:20 UTCJul 11, 10:45 UTC13h 25m
2026-07-09 BBC339 - Jul 9, 20:50 UTCJul 10, 05:35 UTC8h 45m
2026-07-09 BBC722 - Jul 9, 05:25 UTCJul 9, 15:50 UTC10h 25m
2026-07-09 BBC121 - Jul 9, 02:35 UTCJul 9, 03:00 UTC25m
2026-07-08 BBC350 - Jul 8, 17:45 UTCJul 8, 22:45 UTC5h 0m
2026-07-08 BBC349 - Jul 8, 10:45 UTCJul 8, 15:25 UTC4h 40m
2026-07-08 BBC136 - Jul 8, 07:30 UTCJul 8, 08:05 UTC35m
2026-07-08 BBC136 - Jul 8, 01:25 UTCJul 8, 05:20 UTC3h 55m
2026-07-07 BBC335 DAC → JED Jul 7, 14:30 UTCJul 8, 01:20 UTC10h 50m
2026-07-06 BBC540 DAC → DAC Jul 6, 19:00 UTCJul 7, 07:50 UTC12h 50m
2026-07-05 BBC340 DAC → DAC Jul 5, 20:45 UTCJul 6, 10:20 UTC13h 35m
2026-07-05 BBC222 - Jul 5, 16:35 UTCJul 5, 16:55 UTC20m
2026-07-05 BBC721 - Jul 5, 04:30 UTCJul 5, 14:45 UTC10h 15m
2026-07-04 BBC350 DMM → DAC Jul 4, 17:00 UTCJul 4, 21:55 UTC4h 55m
2026-07-04 BBC349 - Jul 4, 09:45 UTCJul 4, 14:30 UTC4h 45m
2026-07-03 BBC336 - Jul 3, 14:00 UTCJul 4, 04:55 UTC14h 55m
2026-07-03 BBC135 - Jul 3, 12:00 UTCJul 3, 12:15 UTC15m
2026-07-03 BBC136 - Jul 3, 07:00 UTCJul 3, 07:25 UTC25m
2026-07-02 BBC335 DAC → JED Jul 2, 13:45 UTCJul 3, 05:25 UTC15h 40m
2026-07-01 BBC340 DAC → DAC Jul 1, 20:35 UTCJul 2, 10:05 UTC13h 30m
2026-07-01 BBC122 - Jul 1, 16:25 UTCJul 1, 16:50 UTC25m
2026-07-01 BBC721 - Jul 1, 04:15 UTCJul 1, 14:40 UTC10h 25m
2026-06-30 BBC332 - Jun 30, 12:35 UTCJun 30, 23:55 UTC11h 20m
2026-06-30 BBC331 - Jun 30, 08:45 UTCJun 30, 09:30 UTC45m
2026-06-29 BBC332 DAC → DAC Jun 29, 09:05 UTCJun 29, 23:54 UTC14h 50m
2026-06-28 BBC336 - Jun 28, 13:55 UTCJun 29, 04:34 UTC14h 40m
2026-06-28 BBC135 - Jun 28, 11:45 UTCJun 28, 11:59 UTC15m
2026-06-28 BBC136 - Jun 28, 06:30 UTCJun 28, 06:55 UTC25m
2026-06-27 BBC136 - Jun 27, 13:55 UTCJun 28, 04:20 UTC14h 25m
2026-06-26 BBC332 DAC → DAC Jun 26, 08:45 UTCJun 26, 23:30 UTC14h 45m
2026-06-25 BBC338 - Jun 25, 12:44 UTCJun 26, 03:05 UTC14h 20m
2026-06-25 BBC137 - Jun 25, 10:45 UTCJun 25, 11:04 UTC20m
2026-06-25 BBC236 - Jun 25, 06:25 UTCJun 25, 06:55 UTC30m
2026-06-24 BBC236 - Jun 24, 13:54 UTCJun 25, 04:25 UTC14h 30m
2026-06-24 BBC136 - Jun 24, 06:20 UTCJun 24, 06:50 UTC30m
2026-06-23 BBC136 - Jun 23, 14:19 UTCJun 24, 04:44 UTC14h 25m
2026-06-23 BBC236 - Jun 23, 06:24 UTCJun 23, 06:44 UTC20m
2026-06-22 BBC235 - Jun 22, 13:49 UTCJun 23, 04:14 UTC14h 25m
2026-06-22 BBC235 - Jun 22, 11:35 UTCJun 22, 11:44 UTC10m
2026-06-21 BBC336 - Jun 21, 13:54 UTCJun 22, 04:30 UTC14h 35m
2026-06-21 BBC135 - Jun 21, 11:49 UTCJun 21, 12:04 UTC15m
2026-06-21 BBC136 - Jun 21, 06:10 UTCJun 21, 06:35 UTC25m
2026-06-20 BBC136 - Jun 20, 13:39 UTCJun 21, 04:24 UTC14h 45m
2026-06-19 BBC332 - Jun 19, 09:14 UTCJun 20, 00:04 UTC14h 50m

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 S2-AHN page for operator, model, and routing details .

Mode-S 70204B frequently asked

What is Mode-S code 70204B?
70204B is an ICAO 24-bit transponder address. Allocated to Bangladesh. Assigned to S2-AHN.
Where is Mode-S 70204B registered?
Mode-S code 70204B is allocated to Bangladesh (BD). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 70204B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 70204B, octal 34020113, decimal 7,348,299.
What flights does 70204B operate?
Mode-S 70204B has broadcast 20 distinct callsigns, including BBC236, BBC136, BBC332, BBC336, BBC135.