What is STC?

What is STC?

Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations.

What is TSO and STC?

By definition, an STC is something that affects the type certificate of the aircraft. A TSO, on the other hand, is a minimum performance standard for specified materials, parts, and appliances used on civil aircraft.

What is an EASA STC?

A Supplemental Type Certificate (STC) is an FAA or EASA approved major modification or repair to an existing type certified aircraft, engine or propeller. It also identifies the certification basis, listing specific regulatory compliance for the design change.

How do I get an FAA STC?

STC process – major steps, as required

1. Applicant applies for STC.
2. Familiarization and preliminary type certification board ( TCB ) meetings.
3. FAA develops certification program plan.
4. Establishment of certification basis by FAA.
5. Applicant submits data for approval.
6. FAA design evaluation.

What does STC mean for Windows?

Sound Transmission Class
Two metrics to measure sound transmission in building are Sound Transmission Class (STC) and Outdoor-Indoor Transition Class (OITC). As the measurements are rated higher, the more sound control a window can provide. STC.

How is STC measured?

STC is measured roughly by the decibel reduction in noise a material/partition can provide, abbreviated ‘dB’. For example, if the curve created by one of your walls most closely matches the standard STC 40 curve, your wall will be said to have an STC of 40.

What is the difference between TC and STC?

A supplemental type certificate (STC) is a type certificate (TC) issued when an applicant has received FAA approval to modify an aircraft from its original design. A type certificate (TC) is issued to a new aircraft type and can only be applied for and issued to the manufacturer of that aircraft.

What is PMA in aviation?

Parts Manufacturer Approval (PMA)

What are the STC holder responsibilities?

STC Holder Responsibilities

• Report failures, malfunctions and defects (14 CFR § 21.3)
• Make the type certificate available to FAA and National Transportation Safety Board, upon request (14 CFR § 21.49)
• Make Instructions for Continued Airworthiness available to owner/operator (14 CFR § 21.50)

What is aircraft Service Bulletin?

A Service Bulletin is a notice to an aircraft operator from the Aircraft Engine or component manufacturer informing of a product change or improvement. An alert service bulletin is issued when an unsafe condition shows up that the manufacturer believes to be safety-related.

Is an STC approved data?

Approved data includes: Type certificate data and specification sheets, supplemental type certificates (STC), Airworthiness Directives (AD), manufacturer’s FAA approved data under a DOA, FAA Designated Engineering Representative (DER) data, FAA Designated Alteration Station (DAS) data and appliance manufacturers’ …

What is STC of glass?

Sound Transmission Class (STC) ratings of glass indicate how well a partition or construction element mitigates or blocks sound and reduces noise. For areas requiring less of a barrier, standard monolithic or single-pane glass are cost-effective and work well for most interior applications.