PlaneTrack / aircraft / N4123D

N4123D - Helio H-391B

N4123D is a Helio H-391B operated by Thun Karl J, Mode-S hex code A4DE53. Track it live, browse its recent flights, or download its full position history.

Helio H-391B (representative image)
Representative image of a Helio H-391B. No photo of N4123D yet.
Photo © Stephen J Stein / Planespotters
RegistrationN4123D
Mode-S hexA4DE53
ManufacturerHelio
ModelH-391B
OperatorThun Karl J
Last seen2026-07-11 19:29 UTC
Last callsignN4123D

Track live on the map Buy full history (CSV) API access

Recent flights (last 30 days)

No flights recorded in the last 30 days. History builds daily as our receiver network logs this aircraft, so check back soon.

Data access

Live position and 365-day history for this aircraft are available through the PlaneTrack API (commercial use from $29/month) and as one-off CSV extracts from our own receiver network archive.