What it approves
Installation of Exhaust System Muffler Assembly
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate � ˘ ˘ ˇ ˆ ˙ ˘ ˘ ˝ ˘ ˛ ° ˜ ! " ˆ ° # ˆ $ % ˘ ˙ ˜ & % ˙ ˜ ' ˘ % ˙ ˜ ˆ ˙ % ˙ ˜ ( ˘ & ˛ ˘ ˘ ˆ ' % ˙ ˜ ˆ � % ˙ ˜ ˛ ˛ % ˙ ˜ ˘ ˝ ˛ ˛ ˘ � � ˆ & ! ˆ ° ˜ ! " ˆ " ' ˆ � � ˘ ) * " & + , ° ' $ This certificate issued to:
of the
By Direction of the Administrator Signature Title G G 2 2 9 9 > > 5 5 @ @ M K H = H 7 = 2 3 / 1 8 8 2 > 9 / D 5 1 D G G 2 2 9 9 > > L K > B / H > H 1 7 6 > > 6 6 D D SA1921SW Wall Colmonoy Corporation 4700 SE 59th Street Oklahoma City, Oklahoma 73135 Part 23 Code of Federal Regulations.
Installation of Exhaust System Muffler Assembly Nos. SO-00127A, SO-00127B-2 according to Drawing No. SO00127B Revision E, dated 11/16/77; or SO-00127B-3, Revision E, dated 6/7/94, or SO-00127B-1, Revision G, dated 11/13/17, or later FAA approved revision.
1. Eligible for replacement of Cessna P/N 1754001-8, -9, -13, -14, 15M, only.
2. Parts may be used for rework of Cessna P/N 1754001-15M muffler per Installation procedure Z175.
3. SO-00127B-3 muffler eligible to replace Cessna 1754001-22 muffler on airplane serial numbers as given in Cessna Service Letter SE77-31.
4. SO-00127B-1 muffler eligible to replace Cessna P/N 9954100-9 and P/N 1754001-18.
5. Compatibility ofthis modification with other previously approved modificationsmust bedetermined by the installer.
Cessna 172 Series, 177 Series 02/5/75; 08/25/75; 8/2/76;11/29/77; 12/12/7709/27/974 10/10/74 3A12, A13CE 06/05/2019 Jim Grigg Manager, Fort Worth ACO Branch Compliance & Airworthiness Division Aircraft Certification Service 2 22 2
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate � ˘ ˘ ˇ ˆ ˙ ˘ ˘ ˝ ˘ ˛ ° ˜ ! " ˆ ° # ˆ $ % ˘ ˙ ˜ & % ˙ ˜ ' ˘ % ˙ ˜ ˆ ˙ % ˙ ˜ ( ˘ & ˛ ˘ ˘ ˆ ' % ˙ ˜ ˆ � % ˙ ˜ ˛ ˛ % ˙ ˜ ˘ ˝ ˛ ˛ ˘ � � ˆ & ! ˆ ° ˜ ! " ˆ " ' ˆ � � ˘ ) * " & + , ° ' $ " N O P Q R S T Q N U O P V Q W X Y Z [ \ ] ^ X Z X \ _ ` Z ] X a X \ Y b X c ` d a [ e b X f ] X _ Y ` \ ` Y g ^ e Y W X [ h h Z ` h Z g [ Y X i j j j g Z k Z [ ^ Y T X Z Y g ^ g k [ Y g ` \ U ^ ^ g k X ` ^ Y W X Y Z [ \ ] ^ X Z ` ^ Y W g ] P f h h c X a X \ Y [ c Q e h X T X Z Y g ^ g k [ Y X l Q W X i j j d g c c Z X g ] ] f X Y W X k X Z Y g ^ g k [ Y X g \ Y W X \ [ a X ` ^ Y W X Y Z [ \ ] ^ X Z X X [ \ _ ^ ` Z d [ Z _ g Y Y ` W g a l Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number:
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 21
| Make | Model | Data sheet |
|---|---|---|
| Textron Aviation Inc. | 172 | 3A12 |
| Textron Aviation Inc. | 172A | 3A12 |
| Textron Aviation Inc. | 172B | 3A12 |