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sensors Mode-S transponder

AA78E7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N774LK · operated by ELITE MEDICAL AIR TRANSPORT LLC DBA, EMERGENT AIR

Hex
AA78E7
Octal
52474347
Decimal
11,172,071
Country
US
Tail
N774LK
Type
BE20
No current signal · last broadcast Jul 21, 02:25 UTC
Flights observed
188
Distinct callsigns
1
Country
US
Last broadcast
Jul 21, 02:25 UTC

Last known position

Most recent position reported by Mode-S AA78E7.

Country allocation

The ICAO 24-bit address AA78E7 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
N774LK - 188 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 N774LK - Jul 21, 01:50 UTCJul 21, 02:25 UTC35m
2026-07-20 N774LK - Jul 20, 21:55 UTCJul 20, 22:05 UTC10m
2026-07-18 N774LK - Jul 18, 20:55 UTCJul 18, 21:10 UTC15m
2026-07-18 N774LK - Jul 18, 18:50 UTCJul 18, 19:00 UTC10m
2026-07-18 N774LK - Jul 18, 11:45 UTCJul 18, 12:00 UTC15m
2026-07-18 N774LK - Jul 18, 01:25 UTCJul 18, 01:45 UTC20m
2026-07-17 N774LK - Jul 17, 22:05 UTCJul 17, 22:20 UTC15m
2026-07-17 N774LK - Jul 17, 05:30 UTCJul 17, 05:55 UTC25m
2026-07-17 N774LK - Jul 17, 03:45 UTCJul 17, 04:04 UTC20m
2026-07-17 N774LK - Jul 17, 01:05 UTCJul 17, 01:29 UTC25m
2026-07-16 N774LK - Jul 16, 22:15 UTCJul 16, 22:35 UTC20m
2026-07-16 N774LK - Jul 16, 07:55 UTCJul 16, 09:50 UTC1h 55m
2026-07-16 N774LK - Jul 16, 02:35 UTCJul 16, 04:30 UTC1h 55m
2026-07-14 N774LK - Jul 14, 18:45 UTCJul 14, 19:20 UTC35m
2026-07-14 N774LK - Jul 14, 16:35 UTCJul 14, 17:00 UTC25m
2026-07-14 N774LK - Jul 14, 06:55 UTCJul 14, 07:25 UTC30m
2026-07-14 N774LK - Jul 14, 04:50 UTCJul 14, 05:20 UTC30m
2026-07-13 N774LK - Jul 13, 22:00 UTCJul 13, 22:30 UTC30m
2026-07-13 N774LK - Jul 13, 19:50 UTCJul 13, 20:00 UTC10m
2026-07-13 N774LK - Jul 13, 19:05 UTCJul 13, 19:15 UTC10m
2026-07-13 N774LK - Jul 13, 16:00 UTCJul 13, 16:50 UTC50m
2026-07-12 N774LK - Jul 12, 07:45 UTCJul 12, 08:05 UTC20m
2026-07-12 N774LK - Jul 12, 04:30 UTCJul 12, 04:40 UTC10m
2026-07-06 N774LK - Jul 6, 19:25 UTCJul 6, 20:15 UTC50m
2026-07-06 N774LK - Jul 6, 15:05 UTCJul 6, 15:40 UTC35m
2026-07-03 N774LK - Jul 3, 04:15 UTCJul 3, 04:35 UTC20m
2026-07-03 N774LK - Jul 3, 02:25 UTCJul 3, 03:15 UTC50m
2026-07-02 N774LK - Jul 2, 23:30 UTCJul 3, 00:05 UTC35m
2026-07-02 N774LK - Jul 2, 22:05 UTCJul 2, 22:25 UTC20m
2026-07-01 N774LK - Jul 1, 18:55 UTCJul 1, 19:25 UTC30m
2026-07-01 N774LK - Jul 1, 10:00 UTCJul 1, 10:35 UTC35m
2026-07-01 N774LK - Jul 1, 05:20 UTCJul 1, 05:35 UTC15m
2026-07-01 N774LK - Jul 1, 03:10 UTCJul 1, 04:15 UTC1h 5m
2026-07-01 N774LK - Jul 1, 00:25 UTCJul 1, 01:05 UTC40m
2026-06-30 N774LK - Jun 30, 23:10 UTCJun 30, 23:35 UTC25m
2026-06-29 N774LK - Jun 29, 14:50 UTCJun 29, 16:35 UTC1h 45m
2026-06-29 N774LK - Jun 29, 11:20 UTCJun 29, 13:04 UTC1h 45m
2026-06-29 N774LK - Jun 29, 02:45 UTCJun 29, 03:14 UTC30m
2026-06-29 N774LK - Jun 29, 00:14 UTCJun 29, 00:44 UTC30m
2026-06-28 N774LK - Jun 28, 03:00 UTCJun 28, 04:44 UTC1h 45m
2026-06-28 N774LK - Jun 28, 00:25 UTCJun 28, 00:59 UTC35m
2026-06-27 N774LK - Jun 27, 23:10 UTCJun 27, 23:34 UTC25m
2026-06-27 N774LK - Jun 27, 06:25 UTCJun 27, 06:35 UTC10m
2026-06-27 N774LK - Jun 27, 04:54 UTCJun 27, 05:04 UTC10m
2026-06-26 N774LK - Jun 26, 22:55 UTCJun 26, 23:09 UTC15m
2026-06-26 N774LK - Jun 26, 20:50 UTCJun 26, 21:10 UTC20m
2026-06-26 N774LK - Jun 26, 19:00 UTCJun 26, 19:35 UTC35m
2026-06-15 N774LK - Jun 15, 16:15 UTCJun 15, 16:35 UTC20m
2026-06-15 N774LK - Jun 15, 14:00 UTCJun 15, 14:15 UTC15m
2026-06-15 N774LK - Jun 15, 11:00 UTCJun 15, 11:10 UTC10m

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 N774LK page for operator, model, and routing details .

Mode-S AA78E7 frequently asked

What is Mode-S code AA78E7?
AA78E7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N774LK.
Where is Mode-S AA78E7 registered?
Mode-S code AA78E7 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 AA78E7 broadcasting right now?
No active broadcast right now. Last signal was Jul 21, 02:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA78E7, octal 52474347, decimal 11,172,071.
What flights does AA78E7 operate?
Mode-S AA78E7 has broadcast 1 distinct callsign, including N774LK.