Apparatus

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sensors Mode-S transponder

AE4F1D

ICAO 24-bit transponder address

Currently assigned to 167866 · SIKORSKY UH-60 Black Hawk

Hex
AE4F1D
Octal
53447435
Decimal
11,423,517
Tail
167866
Type
H60
No current signal · last broadcast 5d ago
Flights observed
16
Distinct callsigns
4
Country
-
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S AE4F1D.

Callsign history 4 distinct

Callsign Airline Flights Last seen
FFAB123 - 6 2026-07-08
CHRGR07 - 6 2026-07-04
CHGR65 - 2 2026-07-05
CHGR11 - 2 2026-07-01

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-07-08 FFAB123 - Jul 8, 19:20 UTCJul 8, 20:20 UTC1h 0m
2026-07-08 FFAB123 - Jul 8, 18:00 UTCJul 8, 18:50 UTC50m
2026-07-05 CHGR65 - Jul 5, 17:40 UTCJul 5, 18:15 UTC35m
2026-07-05 CHGR65 - Jul 5, 15:50 UTCJul 5, 17:00 UTC1h 10m
2026-07-04 CHRGR07 - Jul 4, 16:15 UTCJul 4, 16:25 UTC10m
2026-07-04 CHRGR07 - Jul 4, 15:15 UTCJul 4, 16:05 UTC50m
2026-07-04 CHRGR07 - Jul 4, 13:35 UTCJul 4, 13:55 UTC20m
2026-07-04 CHRGR07 - Jul 4, 10:55 UTCJul 4, 11:30 UTC35m
2026-07-02 CHRGR07 - Jul 2, 22:05 UTCJul 2, 23:10 UTC1h 5m
2026-07-02 CHRGR07 - Jul 2, 21:45 UTCJul 2, 21:55 UTC10m
2026-07-02 FFAB123 - Jul 2, 19:45 UTCJul 2, 20:10 UTC25m
2026-07-01 CHGR11 - Jul 1, 17:55 UTCJul 1, 18:15 UTC20m
2026-07-01 CHGR11 - Jul 1, 16:40 UTCJul 1, 16:50 UTC10m
2026-06-17 FFAB123 - Jun 17, 04:20 UTCJun 17, 04:30 UTC10m
2026-06-17 FFAB123 - Jun 17, 03:05 UTCJun 17, 03:35 UTC30m
2026-06-16 FFAB123 - Jun 16, 23:30 UTCJun 17, 01:40 UTC2h 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 167866 page for operator, model, and routing details .

Mode-S AE4F1D frequently asked

What is Mode-S code AE4F1D?
AE4F1D is an ICAO 24-bit transponder address. Assigned to 167866.
Is AE4F1D broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4F1D, octal 53447435, decimal 11,423,517.
What flights does AE4F1D operate?
Mode-S AE4F1D has broadcast 4 distinct callsigns, including FFAB123, CHRGR07, CHGR65, CHGR11.