# STC SA685NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Yarnell, Don C.
- Description: Installation of a Lycoming engine, a Sensenich propeller, PA18 landing gear, and drooped wing tips
- Status date: November 15, 1978
- Data sheets: A-761
- Certificate PDF: https://openairdocs.org/files/sha256/95/97/95974ea3bb9c0b55f5dd077c3f1d3bb4f86b62d23c390f4558c809db6fe0369c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/308ADB09AB2A98F586257A41006ECDA7.0001
- Page: https://openairdocs.org/stc/SA685NW

## ADs that name it

None.

## Approved models (1)

- American Champion Aircraft Corp. 11AC (TCDS A-761)

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

. - timttd ,statu DrI:lmmca Beparrmenrofl:ransporration-federal 9.lJiation9.dministration ~upplcmcntBI1:~pc<icrtificBtc ~~~~ SA685NW Donald Yarnell 4a <//,1" Civil Air ~, ;/, ,-. I~~Y""UI;"'/:V~htr/-. /yl" ~,"/~"ru/'. / NN'/v":

J/,,/,/ A759 Aeronca llAC Y~..u"I'/';." '/'/#::'Y~.J:k" I;'/,,,,,Y'. Installation of a Lycoming 0-235-C2C engine, a Sensenich 16PM-2//450 propeller, a PA18 landin9 gear, and drooped wing tips in accordance with Donald Yarnell photographs 1 through 5.

J,;",/.,/.;,.., ""-/1,;.,,-/,/,,.,..,. Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Aeronca, Model llAC, Serial No. llAC-864 only. A copy of this Certificate and Addendum No. 685NW shall be maintained as part of the permanent records for the modified aircraft.

November' 15, 1978 Chief, Engineerinq and Manufacturing Branch / J la, } .1f1J alina/WI! a/tho (nt/lull!' tJ IluwJIHlhlr b) fl /"" oj 110/ ,\{udl1l.~ $/ ,(Joo, (H ''''/'''I01II1,n,t'101 nUf'f/i"e."1 1'1111. U1 hoill.

JAu {OII/ifllU nlll, ", ""'IJ/nud /II tJlll"IJim<t' II"" ".iN :!1..,7.

'Il.nittll~[IJ orlJmaica Bcpartmcntof'U:ransportation-jtdcral9lJiation£ldminiscration ~upplrntrntal~~pr<irftificatr(~ontinuetion~hcet) NOV15 19i(;

~~ SA685NW Theconditionsandlimitationsof TypeCertificateDataSheetNumberA759 applyexceptwheresupersededby thefollowing:

ThisSupplementalTypeCertificateDataSheet,whichispartof STCSA685NW prescribestheconditionsandlimitationsunderwhichtheproductforwhich theSTCwasissuedmeetstheairworthinessrequirementsof theCivilAir Regulations:

Engine:

Engine Limits:

CylinderHeadTemperature:

HotHeadis #3 (rightrear) Oil InletTemperature:

Prope11er:

PropellerLimits:

SerialNo.Eligible:

AirSpeedLimits:

MaximumWeight:

InstrumentMarkings:

Lycoming0-235-C2C 115hp @ 2800rpmtake-off,5 minutes 108hp @ 2600max.continuous 5000Fmax.allowable 2200max.allowable Sensenich76AM~2/7450 135hp @ 2600rpm 11AC-864 No change No change A redradiallineat 2600rpm A~) altrratwn tlj Ihi1 ur(,/uatt if punllh?"', by (Jfiru of nol (xendl".£:. II,OUO,or ,,,,p'lJonmrnt not txarJ,,:.£: J )N'J, m both.

'AA FOAM Illo-J.' (to-ell) 7lau ,,,'if~dUm4)' h, "fJ"4,,,,,Jill QI:Cu,J<J'IU u'lth F.4.R :"/.4;', PAGE: 3 OF 3pAGE:S C FAA AC 7]-1851

## Every issue (1)

- November 15, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/95/97/95974ea3bb9c0b55f5dd077c3f1d3bb4f86b62d23c390f4558c809db6fe0369c)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.