# STC SA709GL - Type: Supplemental type certificate - Status: Current, Amended - Holder: Wipaire Inc. - Description: Installation of Hartzell HC-B3R30-4, -4A, -4B/ R10152-5 1/2 propeller, C-4 governor, and836-32PR spinner on P&W R-985 series engines (with 4 1/2 and 9th order crankshaft vibration dampers). (DHC-2 (L-20A) MK.I LANDPLANE; SKIPLANE, FLOATPLANE) - Status date: October 10, 2024 - Data sheets: A-806 - Certificate PDF: https://openairdocs.org/files/sha256/88/c9/88c912d465c73ad13d9a5ed45d81c924a04afd0f0b4efa7eafc3fca4bfb3a6b0 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167962510320250205161631.0001 - Page: https://openairdocs.org/stc/SA709GL ## ADs that name it None. ## Approved models (1) - Viking Air Limited DHC-2 Mk.I (TCDS A-806) ## 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. Number: SA709GL Possession on this Supplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. An STC holder who allows a person to alter an aircraft, aircraft engine, or propeller must provide that person with written permission acceptable to the FAA. (Ref. 14 CFR 21.120). FAA Form 8110-2 (6/20) SUPERSEDES PREVIOUS EDITION Page 1 of 3 This certificate issued to: Part 10 of the Civil Air Regulations Original Product Type Certificate Number: A-806 Description of Type Design Change: Installation of Hartzell HC-B3R30-4, -4A, -4B/R10152- 1/2 propeller, C-4 governor, and spinner as shown below on page 3 on P&W R-985 series engines (with 4 1/2 and 9th order crankshaft vibration dampers) in accordance with Wipaire Hartzell Propeller Installation Instructions W-DHC-04 Rev. F, dated September October 1, 2021 or later FAA approved revision 1. The installer must determine whether this design change is compatible with previously approved modifications. 2. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the othe r person written evidence of that permission. (Limitations and conditions continued on page 3.) 1700 Henry Avenue Fleming Field South St Paul, MN 55075 Make: Viking Air Limited Model: DHC-2 Mk.I (Landplane, Skiplane, and Floatplane) By Direction of the Administrator Signature Title: For Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service (Continuation Sheet) Number: SA709GL Possession on this Supplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. An STC holder who allows a person to alter an aircraft, aircraft engine, or propeller must provide that person with written permission acceptable to the FAA. (Ref. 14 CFR 21.120). FAA Form 8110-2 (6/20) SUPERSEDES PREVIOUS EDITION Page 2 of 3 (Continuation Sheet) Number: SA709GL Possession on this Supplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. An STC holder who allows a person to alter an aircraft, aircraft engine, or propeller must provide that person with written permission acceptable to the FAA. (Ref. 14 CFR 21.120). FAA Form 8110-2 (6/20) SUPERSEDES PREVIOUS EDITION Page 3 of 3 3. Propeller and propeller limits: Hartzell 3 blade propeller: Hub model: HC-B3R30-4, -4A, -4B Blade Model: R10152-5 1/2 Diameter: 95 1/2” No cutoff permitted Pitch Settings at 30’’ sta.: 38.1o High 15o low 4. See Propeller Type Certificate Data Sheet P28EA Note 9: Above hub/blade combination is approved vibration wise only for P&WA R-985 engine models with one 4 1/2 order and one 9th order crankshaft damper. 5. Governor: Hartzell C-4 6. Spinner: Spinner P/N as listed by Wipaire Hartzell Propeller Installation Instructions W-DHC- 04 Rev. F, dated September October 1, 2021 or later FAA approved revision. Note: Spinner installation is mandatory. 7. A copy of this certificate shall be maintained as part of the permanent records for the modified aircraft. -END- ## Every issue (1) - October 10, 2024: Amended, Current. [certificate](https://openairdocs.org/files/sha256/88/c9/88c912d465c73ad13d9a5ed45d81c924a04afd0f0b4efa7eafc3fca4bfb3a6b0) --- 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.