FAA · Supplemental Type Certificate
STC SE6069NM
Removal of inverted flight check valve from Stromberg NA-R9B and NA-Y9E1 series carburetors.
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 (7)
- 5E-1 Pratt & Whitney Division · R-985 Series
- 5E-2 Pratt & Whitney Division · R-1340 Series
- E-123 Pratt & Whitney Division · Wasp Jr. Series
- E-129 Pratt & Whitney Division · Wasp S1H Series
- E-129 Pratt & Whitney Division · Wasp S3H2
- E-142 Pratt & Whitney Division · Wasp S3H1-G
- E-143 Pratt & Whitney Division · Wasp S3H1
Certification basis — 14 CFR
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 ↗