The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Really Quiet LLC

Named as the FAA publishes it on its approvals.

Holds 2 approvals to make replacement parts. FAA spelling: Really Quiet LLC.

Replacement parts approved 2 parts manufacturer approvals, 2 current · Mojave, CA

A parts manufacturer approval lets a company make a replacement part for someone else's aircraft or engine and sell it as an approved part. This company's approvals are mostly for other and general (1), airframe structure (1).

2002-03-21Pylon Mounted Translating Ejector Noise Suppression System, Stage 3 All parts listed on Dwg No. RQG-TR-003 · replaces Modification Part · G-1159
2002-03-21Internal Mixer All parts listed on Dwg No. RQ720100T · replaces Modification Part · Spey 511-8

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.