Apparatus

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sensors Mode-S transponder

AC3C99

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N888LT · BOEING 757-200 · operated by AERO MICRONESIA INC DBA, ASIA PACIFIC AIRLINES

Hex
AC3C99
Octal
53036231
Decimal
11,287,705
Country
US
Tail
N888LT
Type
B752
No current signal · last broadcast Jul 26, 15:05 UTC
Flights observed
104
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:05 UTC

Last known position

Most recent position reported by Mode-S AC3C99.

Country allocation

The ICAO 24-bit address AC3C99 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
MGE880 Asia Pacific Airlines 22 2026-07-26
MGE881 Asia Pacific Airlines 18 2026-07-26
MGE300 Asia Pacific Airlines 16 2026-07-24
MGE301 Asia Pacific Airlines 9 2026-07-20
MGE305 Asia Pacific Airlines 8 2026-06-24
MGE502 Asia Pacific Airlines 5 2026-05-28
MGE405 Asia Pacific Airlines 5 2026-07-23
MGE811 Asia Pacific Airlines 4 2026-06-27
MGE821 Asia Pacific Airlines 2 2026-04-19
MGE820 Asia Pacific Airlines 2 2026-04-18
MGE810 Asia Pacific Airlines 2 2026-06-25
MGE601 Asia Pacific Airlines 2 2026-05-09
MGE400 Asia Pacific Airlines 2 2026-05-26
MGE881D - 1 2026-07-22
MGE823 Asia Pacific Airlines 1 2026-04-20
MGE822 - 1 2026-04-19
MGE403 - 1 2026-04-14
MGE402 Asia Pacific Airlines 1 2026-04-14
MGE401 - 1 2026-04-21
MGE303 Asia Pacific Airlines 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 MGE881 HKG → GUM Jul 26, 13:50 UTCJul 26, 15:05 UTC1h 15m
2026-07-26 MGE880 GUM → HKG Jul 26, 10:20 UTCJul 26, 10:30 UTC10m
2026-07-26 MGE880 GUM → HKG Jul 26, 09:00 UTCJul 26, 09:35 UTC35m
2026-07-24 MGE881 HKG → GUM Jul 24, 21:40 UTCJul 24, 23:45 UTC2h 5m
2026-07-24 MGE880 - Jul 24, 14:55 UTCJul 24, 18:40 UTC3h 45m
2026-07-24 MGE300 HNL → GUM Jul 24, 01:00 UTCJul 24, 01:10 UTC10m
2026-07-23 MGE405 GUM → HNL Jul 23, 04:50 UTCJul 23, 21:55 UTC17h 5m
2026-07-22 MGE881D - Jul 22, 11:10 UTCJul 23, 02:05 UTC14h 55m
2026-07-21 MGE880 - Jul 21, 13:35 UTCJul 21, 14:55 UTC1h 20m
2026-07-20 MGE300 - Jul 20, 22:55 UTCJul 20, 23:05 UTC10m
2026-07-20 MGE301 MAJ → HNL Jul 20, 18:50 UTCJul 20, 19:05 UTC15m
2026-07-13 MGE881 - Jul 13, 10:05 UTCJul 13, 11:10 UTC1h 5m
2026-07-13 MGE880 - Jul 13, 07:40 UTCJul 13, 07:55 UTC15m
2026-07-09 MGE300 - Jul 9, 21:45 UTCJul 9, 22:10 UTC25m
2026-07-08 MGE405 GUM → HNL Jul 8, 23:05 UTCJul 9, 17:30 UTC18h 25m
2026-07-08 MGE300 - Jul 8, 01:30 UTCJul 8, 19:05 UTC17h 35m
2026-07-06 MGE301 MAJ → HNL Jul 6, 15:20 UTCJul 6, 15:50 UTC30m
2026-07-03 MGE881 - Jul 3, 11:00 UTCJul 3, 12:10 UTC1h 10m
2026-07-03 MGE880 - Jul 3, 06:55 UTCJul 3, 07:30 UTC35m
2026-07-03 MGE880 - Jul 3, 05:50 UTCJul 3, 06:20 UTC30m
2026-07-02 MGE881 - Jul 2, 09:05 UTCJul 3, 06:20 UTC21h 15m
2026-07-02 MGE880 - Jul 2, 06:15 UTCJul 2, 06:30 UTC15m
2026-06-30 MGE881 - Jun 30, 16:45 UTCJun 30, 17:55 UTC1h 10m
2026-06-29 MGE880 - Jun 29, 23:49 UTCJun 30, 14:00 UTC14h 11m
2026-06-29 MGE301 MAJ → HNL Jun 29, 15:19 UTCJun 29, 15:39 UTC20m
2026-06-28 MGE881 - Jun 28, 10:30 UTCJun 28, 11:45 UTC1h 15m
2026-06-28 MGE880 - Jun 28, 05:49 UTCJun 28, 07:20 UTC1h 30m
2026-06-27 MGE811 KUL → ROR Jun 27, 11:00 UTCJun 27, 11:09 UTC10m
2026-06-27 MGE811 KUL → ROR Jun 27, 03:44 UTCJun 27, 08:49 UTC5h 5m
2026-06-25 MGE810 GUM → KUL Jun 25, 20:25 UTCJun 26, 13:19 UTC16h 55m
2026-06-25 MGE880 - Jun 25, 17:05 UTCJun 25, 18:19 UTC1h 15m
2026-06-25 MGE300 - Jun 25, 01:04 UTCJun 25, 01:19 UTC15m
2026-06-24 MGE305 GUM → HNL Jun 24, 21:04 UTCJun 24, 21:19 UTC15m
2026-06-08 MGE881 HKG → GUM Jun 8, 09:10 UTCJun 8, 09:30 UTC20m
2026-06-08 MGE880 GUM → HKG Jun 8, 07:10 UTCJun 8, 07:30 UTC20m
2026-06-07 MGE881 HKG → GUM Jun 7, 10:20 UTCJun 8, 06:40 UTC20h 20m
2026-06-07 MGE881 HKG → GUM Jun 7, 09:40 UTCJun 8, 06:40 UTC21h 0m
2026-06-07 MGE880 GUM → HKG Jun 7, 06:35 UTCJun 7, 07:15 UTC40m
2026-06-06 MGE811 KUL → ROR Jun 6, 14:45 UTCJun 7, 06:00 UTC15h 15m
2026-06-06 MGE811 KUL → ROR Jun 6, 09:09 UTCJun 6, 14:00 UTC4h 50m
2026-06-04 MGE810 GUM → KUL Jun 4, 21:25 UTCJun 5, 13:30 UTC16h 5m
2026-06-04 MGE405 GUM → HNL Jun 4, 17:40 UTCJun 4, 18:15 UTC35m
2026-06-03 MGE405 GUM → HNL Jun 3, 21:15 UTCJun 4, 18:15 UTC21h 0m
2026-06-03 MGE305 GUM → HNL Jun 3, 16:35 UTCJun 3, 17:00 UTC25m
2026-06-01 MGE300 HNL → GUM Jun 1, 21:15 UTCJun 1, 21:35 UTC20m
2026-06-01 MGE301 MAJ → HNL Jun 1, 17:30 UTCJun 1, 18:00 UTC30m
2026-05-31 MGE881 HKG → GUM May 31, 09:10 UTCMay 31, 11:00 UTC1h 50m
2026-05-29 MGE300 HNL → GUM May 29, 21:35 UTCMay 29, 22:00 UTC25m
2026-05-29 MGE301 MAJ → HNL May 29, 14:05 UTCMay 29, 14:30 UTC25m
2026-05-28 MGE502 ROR → YAP May 28, 08:45 UTCMay 28, 09:00 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 N888LT page for operator, model, and routing details .

Mode-S AC3C99 frequently asked

What is Mode-S code AC3C99?
AC3C99 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N888LT.
Where is Mode-S AC3C99 registered?
Mode-S code AC3C99 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AC3C99 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC3C99, octal 53036231, decimal 11,287,705.
What flights does AC3C99 operate?
Mode-S AC3C99 has broadcast 20 distinct callsigns, including MGE880, MGE881, MGE300, MGE301, MGE305.