sensors Mode-S transponder

AAFDC4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N807VL · BOEING 737-800 · operated by UMB BANK NA TRUSTEE

Hex
AAFDC4
Octal
52576704
Decimal
11,206,084
Country
US
Tail
N807VL
Type
B738
No current signal · last broadcast 23h ago
Flights observed
13
Distinct callsigns
7
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S AAFDC4.

Country allocation

The ICAO 24-bit address AAFDC4 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 7 distinct

Callsign Airline Flights Last seen
VXP394 - 4 2026-04-13
VXP393 - 3 2026-04-13
VXP348 - 2 2026-04-13
VXP410 - 1 2026-04-13
VXP347 - 1 2026-04-12
VXP1172 Mali Air Express 1 2026-04-13
VXP1171 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-13 VXP410 - Apr 13, 23:10 UTCApr 13, 23:40 UTC30m
2026-04-13 VXP1172 MYR → HVN Apr 13, 20:50 UTCApr 13, 22:15 UTC1h 25m
2026-04-13 VXP1171 - Apr 13, 17:45 UTCApr 13, 19:10 UTC1h 25m
2026-04-13 VXP394 - Apr 13, 16:15 UTCApr 13, 16:50 UTC35m
2026-04-13 VXP394 - Apr 13, 15:50 UTCApr 13, 16:50 UTC1h 0m
2026-04-13 VXP394 - Apr 13, 14:55 UTCApr 13, 16:15 UTC1h 20m
2026-04-13 VXP393 - Apr 13, 12:20 UTCApr 13, 13:10 UTC50m
2026-04-13 VXP393 - Apr 13, 11:55 UTCApr 13, 13:10 UTC1h 15m
2026-04-13 VXP393 - Apr 13, 11:00 UTCApr 13, 12:15 UTC1h 15m
2026-04-13 VXP348 - Apr 13, 00:20 UTCApr 13, 02:30 UTC2h 10m
2026-04-12 VXP348 - Apr 12, 23:55 UTCApr 13, 02:30 UTC2h 35m
2026-04-12 VXP347 - Apr 12, 19:15 UTCApr 12, 20:15 UTC1h 0m
2026-04-12 VXP394 - Apr 12, 17:15 UTCApr 12, 18:20 UTC1h 5m

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 N807VL page for operator, model, and routing details .

Mode-S AAFDC4 frequently asked

What is Mode-S code AAFDC4?
AAFDC4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N807VL.
Where is Mode-S AAFDC4 registered?
Mode-S code AAFDC4 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 AAFDC4 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAFDC4, octal 52576704, decimal 11,206,084.
What flights does AAFDC4 operate?
Mode-S AAFDC4 has broadcast 7 distinct callsigns, including VXP394, VXP393, VXP348, VXP410, VXP347.