Eddie Foy
MEMBER
South Florida
Cessna 180 with EI MVP-50 engine analyzer. Can you legally install a Mitchell Oil press gauge as a secondary gauge? Does it require an STC? Is it a minor alteration with logbook entry or is a 337 required.
According to 14 CFR 21.93, “A ‘minor change’ is one that has no appreciable effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the product. All other changes are ‘major changes’ (except as provided in paragraph (b) of this section).”
According to 14 CFR 21.93, “A ‘minor change’ is one that has no appreciable effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the product. All other changes are ‘major changes’ (except as provided in paragraph (b) of this section).”