STC SH3324NM

Installation of an Allison 250-C30M engine, an engine scavenge oil filter, a redesignated exhaust stack (RMH configuration) and engine cowling(carbon fiber), an option of deleting an auxiliary oil cooler (P/N 20006A), and a relocation of the engine ignition exciter box on the engine compartment deck.

Historical Reissued Aircraft Rotorcraft Rev 12/15/1999 View PDF on drs.faa.gov ↗

What is an STC?

A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.

Applicable aircraft (1)

H9EU Eurocopter France · AS-350D

Certification basis — 14 CFR

Part 21

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120

The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗