Apparatus

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sensors Mode-S transponder

A99E1D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N719GL · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A99E1D
Octal
52317035
Decimal
11,116,061
Country
US
Tail
N719GL
Type
B190
No current signal · last broadcast 6h ago
Flights observed
113
Distinct callsigns
6
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A99E1D.

Country allocation

The ICAO 24-bit address A99E1D 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 6 distinct

Callsign Airline Flights Last seen
AIP1892 Alpine Air Express 46 2026-07-17
AIP1891 Alpine Air Express 46 2026-07-17
AIP1832 - 10 2026-06-17
AIP1831 - 9 2026-06-18
AIP624 Alpine Air Express 1 2026-05-28
AIP623 Alpine Air Express 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 AIP1891 EKO → SLC Jul 17, 23:55 UTCJul 18, 00:35 UTC40m
2026-07-17 AIP1892 SLC → EKO Jul 17, 13:55 UTCJul 17, 14:20 UTC25m
2026-07-17 AIP1891 EKO → SLC Jul 17, 00:10 UTCJul 17, 00:35 UTC25m
2026-07-16 AIP1892 - Jul 16, 13:10 UTCJul 16, 13:40 UTC30m
2026-07-15 AIP1891 ENV → SLC Jul 15, 23:50 UTCJul 16, 00:20 UTC30m
2026-07-15 AIP1892 - Jul 15, 13:15 UTCJul 15, 13:45 UTC30m
2026-07-14 AIP1891 - Jul 14, 23:55 UTCJul 15, 00:25 UTC30m
2026-07-14 AIP1892 - Jul 14, 13:10 UTCJul 14, 13:40 UTC30m
2026-07-11 AIP1891 - Jul 11, 00:05 UTCJul 11, 00:35 UTC30m
2026-07-10 AIP1892 - Jul 10, 13:35 UTCJul 10, 14:05 UTC30m
2026-07-10 AIP1891 - Jul 10, 00:00 UTCJul 10, 00:35 UTC35m
2026-07-09 AIP1892 SLC → EKO Jul 9, 13:25 UTCJul 9, 13:55 UTC30m
2026-07-08 AIP1891 - Jul 8, 23:55 UTCJul 9, 00:20 UTC25m
2026-07-08 AIP1892 SLC → EKO Jul 8, 13:10 UTCJul 8, 13:40 UTC30m
2026-07-07 AIP1891 - Jul 7, 23:55 UTCJul 8, 00:25 UTC30m
2026-07-07 AIP1892 SLC → EKO Jul 7, 13:25 UTCJul 7, 13:50 UTC25m
2026-07-07 AIP1891 - Jul 7, 00:00 UTCJul 7, 00:25 UTC25m
2026-07-06 AIP1892 SLC → EKO Jul 6, 13:05 UTCJul 6, 13:35 UTC30m
2026-06-27 AIP1891 - Jun 27, 00:10 UTCJun 27, 01:00 UTC50m
2026-06-26 AIP1892 SLC → EKO Jun 26, 15:39 UTCJun 26, 16:09 UTC30m
2026-06-26 AIP1891 - Jun 26, 00:30 UTCJun 26, 00:59 UTC30m
2026-06-25 AIP1892 SLC → EKO Jun 25, 13:35 UTCJun 25, 14:04 UTC30m
2026-06-25 AIP1891 - Jun 25, 00:19 UTCJun 25, 00:55 UTC35m
2026-06-24 AIP1892 SLC → EKO Jun 24, 13:44 UTCJun 24, 14:15 UTC30m
2026-06-24 AIP1891 - Jun 24, 00:25 UTCJun 24, 00:59 UTC35m
2026-06-23 AIP1892 SLC → EKO Jun 23, 13:29 UTCJun 23, 13:59 UTC30m
2026-06-23 AIP1891 ENV → SLC Jun 23, 00:24 UTCJun 23, 00:54 UTC30m
2026-06-22 AIP1892 SLC → EKO Jun 22, 12:59 UTCJun 22, 13:35 UTC35m
2026-06-19 AIP1891 - Jun 19, 23:59 UTCJun 20, 00:29 UTC30m
2026-06-19 AIP1892 SLC → EKO Jun 19, 13:24 UTCJun 19, 13:59 UTC35m
2026-06-19 AIP1891 - Jun 19, 00:10 UTCJun 19, 00:34 UTC25m
2026-06-18 AIP1892 SLC → EKO Jun 18, 13:35 UTCJun 18, 14:05 UTC30m
2026-06-18 AIP1831 - Jun 18, 00:50 UTCJun 18, 01:20 UTC30m
2026-06-17 AIP1832 - Jun 17, 13:20 UTCJun 17, 13:35 UTC15m
2026-06-17 AIP1891 EKO → SLC Jun 17, 00:00 UTCJun 17, 00:30 UTC30m
2026-06-16 AIP1892 SLC → EKO Jun 16, 13:34 UTCJun 16, 14:05 UTC30m
2026-06-16 AIP1891 EKO → SLC Jun 16, 00:05 UTCJun 16, 00:29 UTC25m
2026-06-15 AIP1892 SLC → EKO Jun 15, 13:00 UTCJun 15, 13:34 UTC35m
2026-06-13 AIP1831 RKS → SLC Jun 13, 00:45 UTCJun 13, 01:15 UTC30m
2026-06-12 AIP1832 SLC → RKS Jun 12, 13:15 UTCJun 12, 13:30 UTC15m
2026-06-12 AIP1891 EKO → SLC Jun 12, 00:00 UTCJun 12, 00:25 UTC25m
2026-06-11 AIP1892 SLC → EKO Jun 11, 13:25 UTCJun 11, 14:00 UTC35m
2026-06-11 AIP1891 EKO → SLC Jun 11, 00:00 UTCJun 11, 00:25 UTC25m
2026-06-10 AIP1892 SLC → EKO Jun 10, 13:25 UTCJun 10, 14:00 UTC35m
2026-06-09 AIP1891 EKO → SLC Jun 9, 23:55 UTCJun 10, 00:20 UTC25m
2026-06-09 AIP1892 SLC → EKO Jun 9, 13:25 UTCJun 9, 14:00 UTC35m
2026-06-09 AIP1891 EKO → SLC Jun 9, 00:00 UTCJun 9, 00:30 UTC30m
2026-06-08 AIP1892 SLC → EKO Jun 8, 13:10 UTCJun 8, 13:40 UTC30m
2026-06-06 AIP1831 RKS → SLC Jun 6, 00:55 UTCJun 6, 01:25 UTC30m
2026-06-05 AIP1832 SLC → RKS Jun 5, 13:35 UTCJun 5, 13:50 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 N719GL page for operator, model, and routing details .

Mode-S A99E1D frequently asked

What is Mode-S code A99E1D?
A99E1D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N719GL.
Where is Mode-S A99E1D registered?
Mode-S code A99E1D 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 A99E1D broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A99E1D, octal 52317035, decimal 11,116,061.
What flights does A99E1D operate?
Mode-S A99E1D has broadcast 6 distinct callsigns, including AIP1892, AIP1891, AIP1832, AIP1831, AIP624.