# STC SA429NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Simplex Manufacturing Company, United States
- Description: Installation of a Simplex Model 4206 Aerial Spray System
- Applied: January 5, 1977
- Status date: April 11, 1977
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1IN](https://openairdocs.org/tcds/H1IN)
- Certificate PDF: https://openairdocs.org/files/sha256/8c/27/8c2734cf6de3937f368fe012abe01fc843a15195558e384ac60b35764a2e25de
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5442D37D78A5646F85256CC2000E3B5D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA429NW

## ADs that name it (0)

None.

## Approved models (1)

- Eurocopter France SA.315B Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))

## 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.

DqlJrtllll'ilt of Q:rJII"lJOrtatlOll Jrtlml :J\liJlioll :Jt1l11l11intrJtlOIISTcf!:)(j~ ~llpplcmcntJI1i:gpcQ:crtiftcutc S"~29NIV S 1:.11'I.EX /.IM, 1TACTIiH r1/(; COI.IPANY Civil Ai,' Aerospa Liale 3158 .;Ii,.yu~/h~-".).,Effective December 29, J956.

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!:/•.u;0/';" '1:/;;"!/")'I'" (,/,""7': Installation of a Simplex ~'odel ~206 flerial Spray System in aeeur-danee wi th Insta lla tion Instructions for Simplex Spray System.

~Iodd ~206.

--i~nlh'/'~"'J nn ..II;:.""h/'~.u.): Approval of this change in type design applies basically to the above model a iI'eraft only. Thi s approval should not be extended to other aircraft of this model on which otl,er previously approved modifications arc incorporated unless it is determined that the interrelation"hip between this change and any of those other previ ously approved modi fieations will introduce no adverse effect upon the "i rworlhiness of that aircraft. A copy of this Certificate and Simplex FAil Approved Airplane Flight Manual Supplement shall be maintained as part of the permanent records for the modified aircraft.

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## Every issue (1)

- April 11, 1977: Issued, Current. [certificate](https://openairdocs.org/files/sha256/8c/27/8c2734cf6de3937f368fe012abe01fc843a15195558e384ac60b35764a2e25de)

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