Apparatus

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sensors Mode-S transponder

AC7A84

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N903CA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC DBA, CAPE AIR

Hex
AC7A84
Octal
53075204
Decimal
11,303,556
Country
US
Tail
N903CA
Type
C402
No current signal · last broadcast 1d ago
Flights observed
141
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC7A84.

Country allocation

The ICAO 24-bit address AC7A84 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
KAP747 Cape Air 74 2026-05-18
KAP325 Cape Air 17 2026-05-28
KAP314 Cape Air 12 2026-05-26
KAP10 Cape Air 5 2026-04-23
KAP616 Cape Air 4 2026-05-14
KAP548 Cape Air 4 2026-05-22
KAP42 Cape Air 4 2026-05-05
KAP328 Cape Air 3 2026-05-12
KAP241 Cape Air 3 2026-04-26
KAP5061 Cape Air 2 2026-04-17
KAP501 Cape Air 2 2026-05-28
KAP14 Cape Air 2 2026-05-04
KAP85 Cape Air 1 2026-04-14
KAP7021 Cape Air 1 2026-04-14
KAP6789 Cape Air 1 2026-04-19
KAP5202 Cape Air 1 2026-04-26
KAP5182 Cape Air 1 2026-04-26
KAP5021 Cape Air 1 2026-04-26
KAP3201 Cape Air 1 2026-05-12
KAP3181 Cape Air 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 KAP501 LEB → HPN May 28, 21:00 UTCMay 28, 22:15 UTC1h 15m
2026-05-28 KAP501 LEB → HPN May 28, 19:20 UTCMay 28, 20:25 UTC1h 5m
2026-05-28 KAP325 LEB → HPN May 28, 13:25 UTCMay 28, 14:00 UTC35m
2026-05-28 KAP325 LEB → HPN May 28, 11:30 UTCMay 28, 12:30 UTC1h 0m
2026-05-26 KAP314 BOS → MVY May 26, 22:25 UTCMay 26, 22:59 UTC35m
2026-05-26 KAP314 BOS → MVY May 26, 19:34 UTCMay 26, 20:15 UTC40m
2026-05-26 KAP314 BOS → MVY May 26, 17:55 UTCMay 26, 18:34 UTC40m
2026-05-26 KAP314 BOS → MVY May 26, 13:10 UTCMay 26, 13:50 UTC40m
2026-05-25 KAP325 LEB → HPN May 25, 21:24 UTCMay 25, 22:30 UTC1h 5m
2026-05-25 KAP325 LEB → HPN May 25, 19:25 UTCMay 25, 20:40 UTC1h 15m
2026-05-25 KAP325 LEB → HPN May 25, 15:55 UTCMay 25, 17:15 UTC1h 20m
2026-05-25 KAP325 LEB → HPN May 25, 13:00 UTCMay 25, 14:10 UTC1h 10m
2026-05-22 KAP314 BOS → MVY May 22, 18:35 UTCMay 22, 19:15 UTC40m
2026-05-22 KAP548 BHB → BOS May 22, 16:30 UTCMay 22, 17:40 UTC1h 10m
2026-05-22 KAP548 BHB → BOS May 22, 14:00 UTCMay 22, 15:00 UTC1h 0m
2026-05-22 KAP548 BHB → BOS May 22, 11:05 UTCMay 22, 12:15 UTC1h 10m
2026-05-18 KAP548 BHB → BOS May 18, 20:35 UTCMay 18, 21:30 UTC55m
2026-05-18 KAP747 ORD → MBL May 18, 15:20 UTCMay 18, 16:05 UTC45m
2026-05-18 KAP747 ORD → MBL May 18, 13:00 UTCMay 18, 13:40 UTC40m
2026-05-18 KAP747 ORD → MBL May 18, 11:20 UTCMay 18, 12:10 UTC50m
2026-05-17 KAP747 ORD → MBL May 17, 21:15 UTCMay 17, 22:01 UTC45m
2026-05-17 KAP747 ORD → MBL May 17, 19:15 UTCMay 17, 19:40 UTC25m
2026-05-17 KAP747 ORD → MBL May 17, 17:10 UTCMay 17, 17:45 UTC35m
2026-05-17 KAP747 ORD → MBL May 17, 15:40 UTCMay 17, 16:10 UTC30m
2026-05-15 KAP747 ORD → MBL May 15, 23:00 UTCMay 16, 00:00 UTC1h 0m
2026-05-15 KAP747 ORD → MBL May 15, 21:10 UTCMay 15, 21:55 UTC45m
2026-05-15 KAP747 ORD → MBL May 15, 14:30 UTCMay 15, 15:00 UTC29m
2026-05-15 KAP747 ORD → MBL May 15, 12:20 UTCMay 15, 13:15 UTC55m
2026-05-15 KAP747 ORD → MBL May 15, 11:35 UTCMay 15, 11:50 UTC15m
2026-05-14 KAP616 BOS → ACK May 14, 20:00 UTCMay 14, 20:25 UTC25m
2026-05-14 KAP616 BOS → ACK May 14, 17:30 UTCMay 14, 19:10 UTC1h 40m
2026-05-14 KAP616 BOS → ACK May 14, 15:15 UTCMay 14, 16:20 UTC1h 5m
2026-05-14 KAP747 ORD → MBL May 14, 13:40 UTCMay 14, 14:20 UTC40m
2026-05-14 KAP747 ORD → MBL May 14, 12:15 UTCMay 14, 12:50 UTC35m
2026-05-14 KAP747 ORD → MBL May 14, 11:25 UTCMay 14, 11:35 UTC10m
2026-05-13 KAP747 ORD → MBL May 13, 17:10 UTCMay 13, 17:45 UTC35m
2026-05-12 KAP328 BOS → BHB May 12, 15:40 UTCMay 12, 16:35 UTC55m
2026-05-12 KAP3001 MVY → BOS May 12, 14:05 UTCMay 12, 14:35 UTC30m
2026-05-12 KAP328 BOS → BHB May 12, 13:00 UTCMay 12, 13:25 UTC25m
2026-05-12 KAP3201 MVY → BOS May 12, 11:40 UTCMay 12, 12:10 UTC30m
2026-05-12 KAP328 BOS → BHB May 12, 10:30 UTCMay 12, 10:40 UTC10m
2026-05-11 KAP747 ORD → MBL May 11, 21:45 UTCMay 11, 22:15 UTC30m
2026-05-11 KAP747 ORD → MBL May 11, 20:10 UTCMay 11, 20:45 UTC35m
2026-05-11 KAP747 ORD → MBL May 11, 18:40 UTCMay 11, 19:20 UTC40m
2026-05-11 KAP747 ORD → MBL May 11, 16:35 UTCMay 11, 17:05 UTC31m
2026-05-11 KAP747 ORD → MBL May 11, 14:55 UTCMay 11, 15:25 UTC30m
2026-05-11 KAP747 ORD → MBL May 11, 12:40 UTCMay 11, 13:50 UTC1h 10m
2026-05-10 KAP747 ORD → MBL May 10, 19:24 UTCMay 10, 20:40 UTC1h 15m
2026-05-10 KAP747 ORD → MBL May 10, 18:05 UTCMay 10, 18:45 UTC40m
2026-05-10 KAP747 ORD → MBL May 10, 16:00 UTCMay 10, 16:30 UTC30m

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 N903CA page for operator, model, and routing details .

Mode-S AC7A84 frequently asked

What is Mode-S code AC7A84?
AC7A84 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N903CA.
Where is Mode-S AC7A84 registered?
Mode-S code AC7A84 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 AC7A84 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7A84, octal 53075204, decimal 11,303,556.
What flights does AC7A84 operate?
Mode-S AC7A84 has broadcast 20 distinct callsigns, including KAP747, KAP325, KAP314, KAP10, KAP616.