Apparatus

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sensors Mode-S transponder

888129

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A869 · BOEING 787-9 Dreamliner

Hex
888129
Octal
42100451
Decimal
8,945,961
Country
VN
Tail
VN-A869
Type
B789
Broadcasting now · callsign HVN423 · 39,975 ft
Flights observed
246
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 22:15 UTC

Current position

888129 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 888129 falls within the block assigned to Vietnam (VN) by ICAO Annex 10, Volume III. Every aircraft registered in Vietnam 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
HVN422 Vietnam Airlines 44 2026-07-26
HVN423 Vietnam Airlines 30 2026-07-26
HVN973 Vietnam Airlines 9 2026-07-04
HVN972 - 8 2026-07-04
HVN311 Vietnam Airlines 7 2026-05-30
HVN310 Vietnam Airlines 7 2026-05-29
HVN980 Vietnam Airlines 6 2026-06-14
HVN981 Vietnam Airlines 5 2026-06-14
HVN414 Vietnam Airlines 5 2026-07-25
HVN244 - 5 2026-07-19
HVN221 - 5 2026-07-16
HVN215 - 5 2026-07-16
HVN791 Vietnam Airlines 4 2026-04-30
HVN790 Vietnam Airlines 4 2026-06-22
HVN780 Vietnam Airlines 4 2026-04-16
HVN415 Vietnam Airlines 4 2026-07-25
HVN408 - 4 2026-06-21
HVN263 Vietnam Airlines 4 2026-07-21
HVN219 Vietnam Airlines 4 2026-07-13
HVN253 - 3 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HVN422 SGN → PUS Jul 26, 21:15 UTCJul 26, 22:15 UTC1h 0m
2026-07-26 HVN7089 HPH → SGN Jul 26, 12:30 UTCJul 26, 12:40 UTC10m
2026-07-26 HVN7088 SGN → HPH Jul 26, 10:55 UTCJul 26, 11:10 UTC15m
2026-07-26 HVN423 PUS → SGN Jul 26, 01:15 UTCJul 26, 03:45 UTC2h 30m
2026-07-25 HVN422 SGN → PUS Jul 25, 22:35 UTCJul 25, 23:00 UTC25m
2026-07-25 HVN422 SGN → PUS Jul 25, 15:20 UTCJul 25, 21:25 UTC6h 5m
2026-07-25 HVN415 ICN → HAN Jul 25, 09:20 UTCJul 25, 10:00 UTC40m
2026-07-25 HVN414 HAN → ICN Jul 25, 07:05 UTCJul 25, 07:50 UTC45m
2026-07-25 HVN414 HAN → ICN Jul 25, 04:00 UTCJul 25, 04:10 UTC10m
2026-07-25 HVN240 SGN → HAN Jul 25, 01:40 UTCJul 25, 01:50 UTC10m
2026-07-24 HVN231 - Jul 24, 12:15 UTCJul 24, 12:25 UTC10m
2026-07-23 HVN38 CPH → SGN Jul 23, 09:50 UTCJul 23, 20:25 UTC10h 35m
2026-07-22 HVN39 SGN → CPH Jul 22, 11:45 UTCJul 23, 05:05 UTC17h 20m
2026-07-22 HVN423 PUS → SGN Jul 22, 01:40 UTCJul 22, 04:10 UTC2h 30m
2026-07-21 HVN422 SGN → PUS Jul 21, 23:35 UTCJul 21, 23:50 UTC15m
2026-07-21 HVN422 SGN → PUS Jul 21, 21:10 UTCJul 21, 22:20 UTC1h 10m
2026-07-21 HVN263 HAN → SGN Jul 21, 13:25 UTCJul 21, 13:35 UTC10m
2026-07-21 HVN247 HAN → SGN Jul 21, 03:40 UTCJul 21, 08:15 UTC4h 35m
2026-07-20 HVN335 - Jul 20, 01:05 UTCJul 20, 02:00 UTC55m
2026-07-19 HVN334 HAN → KIX Jul 19, 20:35 UTCJul 19, 21:40 UTC1h 5m
2026-07-19 HVN7564 - Jul 19, 10:30 UTCJul 19, 10:40 UTC10m
2026-07-19 HVN7565 - Jul 19, 06:55 UTCJul 19, 07:05 UTC10m
2026-07-19 HVN244 - Jul 19, 03:35 UTCJul 19, 03:50 UTC15m
2026-07-18 HVN1187 HPH → SGN Jul 18, 14:00 UTCJul 18, 14:10 UTC10m
2026-07-18 HVN1186 SGN → HPH Jul 18, 12:40 UTCJul 18, 12:55 UTC15m
2026-07-18 HVN251 HAN → SGN Jul 18, 06:00 UTCJul 18, 06:10 UTC10m
2026-07-18 HVN244 - Jul 18, 04:05 UTCJul 18, 04:20 UTC15m
2026-07-17 HVN243 HAN → SGN Jul 17, 23:35 UTCJul 17, 23:50 UTC15m
2026-07-17 HVN1207 - Jul 17, 12:00 UTCJul 17, 12:10 UTC10m
2026-07-17 HVN248 - Jul 17, 09:55 UTCJul 17, 10:05 UTC10m
2026-07-17 HVN244 - Jul 17, 03:45 UTCJul 17, 03:55 UTC10m
2026-07-16 HVN221 - Jul 16, 15:05 UTCJul 16, 15:14 UTC10m
2026-07-16 HVN215 - Jul 16, 08:55 UTCJul 16, 09:05 UTC10m
2026-07-16 HVN209 - Jul 16, 02:40 UTCJul 16, 02:55 UTC15m
2026-07-16 HVN206 - Jul 16, 00:35 UTCJul 16, 00:45 UTC10m
2026-07-15 HVN221 - Jul 15, 15:10 UTCJul 15, 15:20 UTC10m
2026-07-15 HVN254 - Jul 15, 11:40 UTCJul 15, 11:50 UTC10m
2026-07-15 HVN7223 - Jul 15, 06:55 UTCJul 15, 07:05 UTC10m
2026-07-15 HVN7220 - Jul 15, 04:30 UTCJul 15, 04:50 UTC20m
2026-07-14 HVN7221 - Jul 14, 23:50 UTCJul 15, 00:05 UTC15m
2026-07-14 HVN1206 VCA → HAN Jul 14, 14:40 UTCJul 14, 14:50 UTC10m
2026-07-14 HVN1207 - Jul 14, 10:10 UTCJul 14, 10:20 UTC10m
2026-07-14 HVN247 - Jul 14, 03:25 UTCJul 14, 08:05 UTC4h 40m
2026-07-13 HVN219 HAN → SGN Jul 13, 12:55 UTCJul 14, 01:55 UTC13h 0m
2026-07-13 HVN216 - Jul 13, 10:55 UTCJul 13, 11:05 UTC10m
2026-07-13 HVN423 - Jul 13, 02:40 UTCJul 13, 03:30 UTC50m
2026-07-13 HVN423 - Jul 13, 01:20 UTCJul 13, 01:35 UTC15m
2026-07-12 HVN422 - Jul 12, 23:20 UTCJul 12, 23:55 UTC35m
2026-07-12 HVN422 - Jul 12, 15:45 UTCJul 12, 22:25 UTC6h 40m
2026-07-12 HVN215 - Jul 12, 08:35 UTCJul 12, 08:45 UTC10m

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 VN-A869 page for operator, model, and routing details .

Mode-S 888129 frequently asked

What is Mode-S code 888129?
888129 is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A869.
Where is Mode-S 888129 registered?
Mode-S code 888129 is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 888129 broadcasting right now?
Yes. Mode-S 888129 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 888129, octal 42100451, decimal 8,945,961.
What flights does 888129 operate?
Mode-S 888129 has broadcast 20 distinct callsigns, including HVN422, HVN423, HVN973, HVN972, HVN311.