Apparatus

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sensors Mode-S transponder

A9E8CF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N738AM · AIRBUS HELICOPTERS EC-135/635 · operated by AIR METHODS LLC

Hex
A9E8CF
Octal
52364317
Decimal
11,135,183
Country
US
Tail
N738AM
Type
EC35
No current signal · last broadcast 1h ago
Flights observed
232
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A9E8CF.

Country allocation

The ICAO 24-bit address A9E8CF 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 1 distinct

Callsign Airline Flights Last seen
N738AM - 232 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 N738AM - Jul 15, 04:55 UTCJul 15, 05:20 UTC25m
2026-07-15 N738AM - Jul 15, 03:00 UTCJul 15, 03:20 UTC20m
2026-07-13 N738AM - Jul 13, 20:50 UTCJul 13, 21:20 UTC30m
2026-07-13 N738AM - Jul 13, 19:50 UTCJul 13, 20:05 UTC15m
2026-07-13 N738AM - Jul 13, 18:45 UTCJul 13, 19:10 UTC25m
2026-07-13 N738AM - Jul 13, 16:45 UTCJul 13, 16:55 UTC10m
2026-07-12 N738AM - Jul 12, 19:25 UTCJul 12, 19:35 UTC10m
2026-07-12 N738AM - Jul 12, 18:01 UTCJul 12, 18:40 UTC40m
2026-07-10 N738AM SBD → OCN Jul 10, 19:00 UTCJul 10, 19:35 UTC35m
2026-07-10 N738AM - Jul 10, 17:25 UTCJul 10, 17:45 UTC20m
2026-07-10 N738AM - Jul 10, 16:45 UTCJul 10, 17:05 UTC20m
2026-07-08 N738AM - Jul 8, 07:30 UTCJul 8, 08:25 UTC55m
2026-07-08 N738AM - Jul 8, 05:10 UTCJul 8, 05:45 UTC35m
2026-07-08 N738AM - Jul 8, 04:10 UTCJul 8, 04:25 UTC15m
2026-07-08 N738AM - Jul 8, 03:00 UTCJul 8, 03:25 UTC25m
2026-07-06 N738AM - Jul 6, 07:55 UTCJul 6, 08:10 UTC15m
2026-07-06 N738AM - Jul 6, 07:10 UTCJul 6, 07:25 UTC15m
2026-07-05 N738AM OCN → OCN Jul 5, 21:55 UTCJul 5, 23:30 UTC1h 35m
2026-07-05 N738AM - Jul 5, 14:05 UTCJul 5, 15:55 UTC1h 50m
2026-07-05 N738AM - Jul 5, 12:35 UTCJul 5, 13:20 UTC45m
2026-07-04 N738AM SPQ → OCN Jul 4, 22:40 UTCJul 4, 23:10 UTC30m
2026-07-04 N738AM - Jul 4, 21:40 UTCJul 4, 21:55 UTC15m
2026-07-04 N738AM - Jul 4, 20:25 UTCJul 4, 20:50 UTC25m
2026-07-03 N738AM - Jul 3, 20:50 UTCJul 3, 22:15 UTC1h 25m
2026-07-03 N738AM OCN → OCN Jul 3, 16:55 UTCJul 3, 17:05 UTC10m
2026-07-03 N738AM - Jul 3, 15:40 UTCJul 3, 15:50 UTC10m
2026-07-03 N738AM - Jul 3, 14:00 UTCJul 3, 15:00 UTC1h 0m
2026-07-02 N738AM - Jul 2, 22:25 UTCJul 2, 22:55 UTC30m
2026-07-02 N738AM - Jul 2, 21:25 UTCJul 2, 21:40 UTC15m
2026-07-02 N738AM - Jul 2, 20:15 UTCJul 2, 20:40 UTC25m
2026-07-01 N738AM - Jul 1, 18:10 UTCJul 1, 18:25 UTC15m
2026-07-01 N738AM - Jul 1, 17:05 UTCJul 1, 17:40 UTC35m
2026-07-01 N738AM OCN → OCN Jul 1, 06:20 UTCJul 1, 07:20 UTC1h 0m
2026-06-29 N738AM - Jun 29, 12:29 UTCJun 29, 12:55 UTC25m
2026-06-29 N738AM - Jun 29, 10:55 UTCJun 29, 11:10 UTC15m
2026-06-29 N738AM - Jun 29, 09:10 UTCJun 29, 09:50 UTC40m
2026-06-29 N738AM - Jun 29, 02:39 UTCJun 29, 03:25 UTC45m
2026-06-29 N738AM - Jun 29, 02:20 UTCJun 29, 02:30 UTC10m
2026-06-28 N738AM - Jun 28, 21:55 UTCJun 28, 22:04 UTC10m
2026-06-28 N738AM - Jun 28, 20:34 UTCJun 28, 21:20 UTC45m
2026-06-28 N738AM - Jun 28, 19:44 UTCJun 28, 19:59 UTC15m
2026-06-28 N738AM - Jun 28, 18:25 UTCJun 28, 18:55 UTC30m
2026-06-28 N738AM - Jun 28, 16:19 UTCJun 28, 16:55 UTC35m
2026-06-28 N738AM - Jun 28, 03:00 UTCJun 28, 03:29 UTC30m
2026-06-28 N738AM - Jun 28, 02:10 UTCJun 28, 02:25 UTC15m
2026-06-27 N738AM OCN → OCN Jun 27, 19:15 UTCJun 27, 20:14 UTC1h 0m
2026-06-27 N738AM - Jun 27, 01:44 UTCJun 27, 02:50 UTC1h 5m
2026-06-26 N738AM - Jun 26, 23:39 UTCJun 27, 01:04 UTC1h 25m
2026-06-26 N738AM - Jun 26, 22:34 UTCJun 26, 22:44 UTC10m
2026-06-26 N738AM - Jun 26, 21:30 UTCJun 26, 21:59 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 N738AM page for operator, model, and routing details .

Mode-S A9E8CF frequently asked

What is Mode-S code A9E8CF?
A9E8CF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N738AM.
Where is Mode-S A9E8CF registered?
Mode-S code A9E8CF 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 A9E8CF broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9E8CF, octal 52364317, decimal 11,135,183.
What flights does A9E8CF operate?
Mode-S A9E8CF has broadcast 1 distinct callsign, including N738AM.