PlaneTrack / aircraft / N399KK

N399KK - Sikorsky S-76C

N399KK is a Sikorsky S-76C operated by Citigroup Inc, Mode-S hex code A4A523. Track it live, browse its recent flights, or download its full position history.

No photo yet for Sikorsky S-76C

RegistrationN399KK

Mode-S hexA4A523

ManufacturerSikorsky

ModelS-76C

OperatorCitigroup Inc

Last seen2026-07-14 23:14 UTC

Last callsignN399KK

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.