Contents
How can I get STC approved?
STC process – major steps, as required
- Applicant applies for STC.
- Familiarization and preliminary type certification board ( TCB ) meetings.
- FAA develops certification program plan.
- Establishment of certification basis by FAA.
- Applicant submits data for approval.
- FAA design evaluation.
How much does a type certificate cost?
For up to three seats, primary category aircraft, certification costs around US$1m, US$25m for a general aviation aircraft and hundreds of millions of dollars for a commercial aircraft; certification delays can cost millions of dollars and can decide a program’s profitability.
What is the purpose of an STC?
A supplemental type certificate (STC) is a national aviation authority-approved major modification or repair to an existing type certified aircraft, engine or propeller. As it adds to the existing type certificate, it is deemed “supplemental”.
What is a one only STC?
A “One-only” STC may be issued for a particular aircraft, identified by make, model, and serial number. A one-only STC cannot be amended and the holder is not eligible for production approval. Application for a multiple STC is required for subsequent approvals of the modification.
Who can do a 337?
The person who performs or supervises a major repair or major alteration must prepare FAA Form 337. The form is executed at least in duplicate and is used to record major repairs and major alterations made to an aircraft, airframe, powerplant, propeller, appliance, or a component part thereof.
Can an A&P install a transponder?
A&P’s need to know their limitations on transponders. If testing is required post maintenance of the system an A&P cannot do it under their A&P certificate per 91.413. AC 43-6C provides guidance on when and what testing is required after maintenance. Yep, I put one in once, but it had to get checked afterwards.