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 8h ago
Flights observed
57
Distinct callsigns
17
Country
US
Last broadcast
8h ago

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 17 distinct

Callsign Airline Flights Last seen
MGE300 Asia Pacific Airlines 10 2026-05-29
MGE880 Asia Pacific Airlines 9 2026-05-19
MGE881 Asia Pacific Airlines 7 2026-05-19
MGE305 Asia Pacific Airlines 6 2026-05-20
MGE502 Asia Pacific Airlines 5 2026-05-28
MGE301 Asia Pacific Airlines 5 2026-05-29
MGE821 Asia Pacific Airlines 2 2026-04-19
MGE820 Asia Pacific Airlines 2 2026-04-18
MGE601 Asia Pacific Airlines 2 2026-05-09
MGE400 Asia Pacific Airlines 2 2026-05-26
MGE823 Asia Pacific Airlines 1 2026-04-20
MGE822 - 1 2026-04-19
MGE405 Asia Pacific Airlines 1 2026-04-18
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
2026-05-29 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
2026-05-28 MGE502 ROR → YAP May 28, 07:15 UTCMay 28, 07:40 UTC25m
2026-05-26 MGE400 HNL → GUM May 26, 21:25 UTCMay 26, 21:49 UTC25m
2026-05-25 MGE301 MAJ → HNL May 25, 16:00 UTCMay 25, 16:30 UTC30m
2026-05-21 MGE300 HNL → GUM May 21, 21:45 UTCMay 21, 22:05 UTC20m
2026-05-20 MGE305 GUM → HNL May 20, 19:05 UTCMay 20, 19:35 UTC30m
2026-05-19 MGE881 HKG → GUM May 19, 09:35 UTCMay 19, 10:50 UTC1h 15m
2026-05-19 MGE880 GUM → HKG May 19, 05:50 UTCMay 19, 07:10 UTC1h 20m
2026-05-18 MGE881 HKG → GUM May 18, 10:40 UTCMay 19, 07:10 UTC20h 29m
2026-05-18 MGE880 GUM → HKG May 18, 06:20 UTCMay 18, 07:30 UTC1h 10m
2026-05-17 MGE880 GUM → HKG May 17, 09:50 UTCMay 18, 07:30 UTC21h 40m
2026-05-17 MGE881 HKG → GUM May 17, 09:00 UTCMay 17, 09:15 UTC15m
2026-05-17 MGE880 GUM → HKG May 17, 06:55 UTCMay 17, 07:15 UTC20m
2026-05-17 MGE880 GUM → HKG May 17, 05:50 UTCMay 17, 06:10 UTC20m
2026-05-14 MGE300 HNL → GUM May 14, 21:00 UTCMay 14, 21:20 UTC20m
2026-05-13 MGE300 HNL → GUM May 13, 22:25 UTCMay 14, 16:15 UTC17h 50m
2026-05-13 MGE305 GUM → HNL May 13, 18:55 UTCMay 13, 19:20 UTC25m
2026-05-11 MGE300 HNL → GUM May 11, 21:10 UTCMay 11, 21:30 UTC20m
2026-05-11 MGE301 MAJ → HNL May 11, 14:30 UTCMay 11, 15:05 UTC35m
2026-05-10 MGE400 HNL → GUM May 10, 17:34 UTCMay 11, 15:05 UTC21h 30m
2026-05-09 MGE601 PPG → HNL May 9, 23:15 UTCMay 10, 11:05 UTC11h 50m
2026-05-09 MGE301 MAJ → HNL May 9, 19:30 UTCMay 9, 20:00 UTC30m
2026-05-07 MGE502 ROR → YAP May 7, 09:20 UTCMay 7, 09:35 UTC15m
2026-05-07 MGE502 ROR → YAP May 7, 07:20 UTCMay 7, 07:55 UTC35m
2026-05-04 MGE300 HNL → GUM May 4, 21:00 UTCMay 4, 21:10 UTC10m
2026-05-02 MGE601 PPG → HNL May 2, 21:20 UTCMay 3, 10:00 UTC12h 39m
2026-05-02 MGE305 GUM → HNL May 2, 17:10 UTCMay 2, 17:40 UTC30m
2026-05-01 MGE300 HNL → GUM May 1, 21:35 UTCMay 2, 17:40 UTC20h 5m
2026-05-01 MGE301 MAJ → HNL May 1, 15:50 UTCMay 1, 16:30 UTC40m
2026-04-30 MGE881 HKG → GUM Apr 30, 09:05 UTCApr 30, 10:15 UTC1h 10m
2026-04-30 MGE880 GUM → HKG Apr 30, 07:10 UTCApr 30, 07:20 UTC10m
2026-04-30 MGE880 GUM → HKG Apr 30, 05:50 UTCApr 30, 06:30 UTC40m
2026-04-28 MGE881 HKG → GUM Apr 28, 09:40 UTCApr 28, 10:45 UTC1h 5m
2026-04-28 MGE880 GUM → HKG Apr 28, 05:50 UTCApr 28, 07:15 UTC1h 25m
2026-04-27 MGE881 HKG → GUM Apr 27, 08:55 UTCApr 28, 07:15 UTC22h 20m
2026-04-26 MGE881 HKG → GUM Apr 26, 15:25 UTCApr 27, 07:10 UTC15h 45m
2026-04-26 MGE880 GUM → HKG Apr 26, 11:35 UTCApr 26, 13:05 UTC1h 30m
2026-04-24 MGE502 - Apr 24, 16:20 UTCApr 24, 16:35 UTC15m
2026-04-24 MGE300 HNL → GUM Apr 24, 03:45 UTCApr 24, 15:20 UTC11h 35m
2026-04-23 MGE305 GUM → HNL Apr 23, 20:35 UTCApr 23, 21:00 UTC25m
2026-04-23 MGE305 GUM → HNL Apr 23, 00:20 UTCApr 23, 21:00 UTC20h 40m
2026-04-23 MGE303 HNL → PNI Apr 23, 00:05 UTCApr 23, 21:00 UTC20h 55m
2026-04-22 MGE305 GUM → HNL Apr 22, 18:40 UTCApr 22, 19:10 UTC30m
2026-04-21 MGE300 HNL → GUM Apr 21, 21:25 UTCApr 21, 21:40 UTC15m
2026-04-21 MGE401 - Apr 21, 02:45 UTCApr 21, 16:10 UTC13h 25m
2026-04-20 MGE823 GUM → PHE Apr 20, 04:25 UTCApr 21, 02:55 UTC22h 31m
2026-04-19 MGE822 - Apr 19, 16:20 UTCApr 20, 04:35 UTC12h 15m
2026-04-19 MGE821 IAH → LAX Apr 19, 08:10 UTCApr 19, 14:15 UTC6h 5m

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 8h ago.
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 17 distinct callsigns, including MGE300, MGE880, MGE881, MGE305, MGE502.