Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC1CDE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N88QD · PILATUS PC-12 · operated by QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

Hex
AC1CDE
Octal
53016336
Decimal
11,279,582
Country
US
Tail
N88QD
Type
PC12
No current signal · last broadcast 4d ago
Flights observed
237
Distinct callsigns
20
Country
US
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S AC1CDE.

Country allocation

The ICAO 24-bit address AC1CDE 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
LBQ791 - 34 2026-07-02
LBQ640 - 32 2026-07-10
LBQ840 - 23 2026-05-22
LBQ825 - 23 2026-06-27
LBQ870 - 19 2026-04-16
LBQ783 - 17 2026-06-06
LBQ650 - 11 2026-07-03
LBQ792 - 9 2026-06-13
LBQ420 - 8 2026-05-09
LBQ425 - 7 2026-05-09
LBQ900 - 6 2026-06-19
LBQ612 - 6 2026-07-08
LBQ800 - 5 2026-06-05
LBQ790 - 5 2026-06-16
LBQ651 - 5 2026-05-19
LBQ670 - 4 2026-06-11
LBQ611 - 4 2026-07-08
LBQ968 - 3 2026-06-14
LBQ901 - 3 2026-06-15
LBQ421 - 3 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 LBQ640 - Jul 10, 05:20 UTCJul 10, 06:15 UTC55m
2026-07-10 LBQ640 - Jul 10, 03:20 UTCJul 10, 04:25 UTC1h 5m
2026-07-10 LBQ640 - Jul 10, 02:20 UTCJul 10, 02:45 UTC25m
2026-07-10 LBQ640 - Jul 10, 00:10 UTCJul 10, 01:25 UTC1h 15m
2026-07-09 LBQ640 - Jul 9, 05:40 UTCJul 9, 06:35 UTC55m
2026-07-09 LBQ640 - Jul 9, 03:45 UTCJul 9, 04:55 UTC1h 10m
2026-07-09 LBQ640 - Jul 9, 02:45 UTCJul 9, 03:10 UTC25m
2026-07-09 LBQ640 - Jul 9, 00:10 UTCJul 9, 01:05 UTC55m
2026-07-08 LBQ612 - Jul 8, 12:15 UTCJul 8, 13:50 UTC1h 35m
2026-07-08 LBQ612 - Jul 8, 10:00 UTCJul 8, 11:20 UTC1h 20m
2026-07-08 LBQ612 - Jul 8, 07:20 UTCJul 8, 08:55 UTC1h 35m
2026-07-08 LBQ611 - Jul 8, 05:25 UTCJul 8, 06:20 UTC55m
2026-07-08 LBQ611 - Jul 8, 00:55 UTCJul 8, 04:10 UTC3h 15m
2026-07-03 LBQ612 - Jul 3, 08:30 UTCJul 3, 14:10 UTC5h 40m
2026-07-03 LBQ650 - Jul 3, 06:40 UTCJul 3, 07:50 UTC1h 10m
2026-07-03 LBQ650 RDG → LUK Jul 3, 03:15 UTCJul 3, 05:05 UTC1h 50m
2026-07-02 LBQ791 - Jul 2, 03:30 UTCJul 2, 08:35 UTC5h 5m
2026-07-02 LBQ791 - Jul 2, 02:40 UTCJul 2, 03:05 UTC25m
2026-07-02 LBQ791 - Jul 2, 00:35 UTCJul 2, 02:00 UTC1h 25m
2026-07-01 LBQ791 - Jul 1, 06:40 UTCJul 1, 08:00 UTC1h 20m
2026-07-01 LBQ791 - Jul 1, 05:50 UTCJul 1, 06:05 UTC15m
2026-07-01 LBQ791 - Jul 1, 03:15 UTCJul 1, 05:25 UTC2h 10m
2026-07-01 LBQ791 - Jul 1, 02:40 UTCJul 1, 03:00 UTC20m
2026-07-01 LBQ791 - Jul 1, 00:50 UTCJul 1, 02:10 UTC1h 20m
2026-06-30 LBQ791 - Jun 30, 03:10 UTCJun 30, 08:00 UTC4h 50m
2026-06-30 LBQ791 RDG → LUK Jun 30, 00:39 UTCJun 30, 02:55 UTC2h 16m
2026-06-27 LBQ825 - Jun 27, 05:15 UTCJun 27, 07:59 UTC2h 45m
2026-06-27 LBQ825 - Jun 27, 03:44 UTCJun 27, 04:19 UTC35m
2026-06-27 LBQ825 RDG → CAE Jun 27, 00:05 UTCJun 27, 02:59 UTC2h 55m
2026-06-26 LBQ825 - Jun 26, 05:19 UTCJun 26, 08:05 UTC2h 45m
2026-06-26 LBQ825 - Jun 26, 04:00 UTCJun 26, 04:34 UTC35m
2026-06-26 LBQ825 - Jun 26, 02:34 UTCJun 26, 03:05 UTC30m
2026-06-26 LBQ825 - Jun 26, 00:05 UTCJun 26, 02:30 UTC2h 25m
2026-06-25 LBQ825 - Jun 25, 05:25 UTCJun 25, 08:04 UTC2h 40m
2026-06-25 LBQ825 - Jun 25, 03:54 UTCJun 25, 04:29 UTC35m
2026-06-25 LBQ825 - Jun 25, 00:05 UTCJun 25, 03:04 UTC3h 0m
2026-06-24 LBQ791 - Jun 24, 06:50 UTCJun 24, 08:14 UTC1h 25m
2026-06-24 LBQ791 - Jun 24, 03:15 UTCJun 24, 06:04 UTC2h 50m
2026-06-24 LBQ791 - Jun 24, 02:40 UTCJun 24, 02:49 UTC10m
2026-06-24 LBQ791 - Jun 24, 00:30 UTCJun 24, 01:49 UTC1h 20m
2026-06-23 LBQ791 - Jun 23, 03:25 UTCJun 23, 08:25 UTC5h 0m
2026-06-23 LBQ791 - Jun 23, 02:40 UTCJun 23, 03:09 UTC30m
2026-06-23 LBQ791 - Jun 23, 00:35 UTCJun 23, 02:09 UTC1h 35m
2026-06-22 LBQ750 RDG → RDG Jun 22, 18:00 UTCJun 22, 19:05 UTC1h 5m
2026-06-20 LBQ791 - Jun 20, 03:44 UTCJun 20, 08:14 UTC4h 30m
2026-06-20 LBQ791 - Jun 20, 03:09 UTCJun 20, 03:24 UTC15m
2026-06-20 LBQ791 - Jun 20, 00:54 UTCJun 20, 02:24 UTC1h 30m
2026-06-19 LBQ900 RDG → RDG Jun 19, 16:34 UTCJun 19, 17:49 UTC1h 15m
2026-06-19 LBQ900 RDG → RDG Jun 19, 13:34 UTCJun 19, 14:59 UTC1h 25m
2026-06-18 LBQ900 RDG → RDG Jun 18, 15:55 UTCJun 18, 17:05 UTC1h 10m

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 N88QD page for operator, model, and routing details .

Mode-S AC1CDE frequently asked

What is Mode-S code AC1CDE?
AC1CDE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N88QD.
Where is Mode-S AC1CDE registered?
Mode-S code AC1CDE 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 AC1CDE broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1CDE, octal 53016336, decimal 11,279,582.
What flights does AC1CDE operate?
Mode-S AC1CDE has broadcast 20 distinct callsigns, including LBQ791, LBQ640, LBQ840, LBQ825, LBQ870.