# STC SA4011SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: RAM Aircraft Limited Partnership, United States
- Description: Installation of TSIO-520-N or TSIO-520-NB engines.
- Applied: April 27, 1979
- Status date: January 8, 2001
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25), [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- Certificate PDF: https://openairdocs.org/files/sha256/42/86/4286dac75dc4c9a77d95ad4e5725e30ff671f318ebfdc9327d3c00caa5f29fe6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C52914D47FFCD94F85256CC2000C6020.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4011SW

## ADs that name it (0)

None.

## Approved models (6)

- Cessna Aircraft Company 320D ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320E ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320F ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company T310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Cessna Aircraft Company T310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Cessna Aircraft Company T310R ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

## 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.

Part 3 of the Civil Air R egulations.

Original Product Type Certificate N umber :

Installation of TSIO-520-N, or TSIO-520-NB engines according to Drawing List 1026, Revision E, dated 8/20/86, or later FAA approved revision.

RAM Aircraft, Limited Partnership 7505 Karl May Drive Waco, TX 76708 3A25, 3A10 M ake : Cessna M odel : 320D, 320E, 320F, T310P, T310Q, T310R Date of application : April 27, 1979

Date of issuan ce : July 09, 1979

Date reissued : October 08, 2001

Date amended : May 03, 1988 Revision 7

B y direction of the A dministrator

(Signature) S. Frances Cox, Manager Special Certification Office, Southwest Region

(Title)

FAA Form 8110-2-1(10-69) Page 2 of 4

FAA Form 8110-2-1(10-69) Page 3 of 4

N umber SA4011SW Date of Issuance: July 09, 1979 Date Amended: May 03, 1988 Reissuance Date: October 8, 2001

1. The following FAA Approved Airplane Supplemental Flight Manuals are required:

a. Dated July 6, 1979, is required for Cessna Models 320D, 320E, 320F with TSIO-520-N Engines:

OR dated May 1, 1981, with TSIO-520-N or –NB Engines:

OR dated February 12, 1982, with TSIO-520-N or –NB Engines and McCauley 3AF32C93/82NC-5.5 or 3AF32C505/82NEA-5.5 propellers;

OR dated March 4, 1982, with TSIO-520-NB Engines modified by STC No.

SE4327SW and Hartzell PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/ FC7663DB-2Q propellers;

OR dated May 18, 1982, with TSIO-520-N or –NB Engines and Hartzell PHC-C3YF/FC7663DB-2Q propellers;

OR dated November 18, 1986, with TSIO-520-NB Engines modified by STC No.

SE4327SW and Hartzell PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/ FC7663DB-2Q propellers.

b. Dated July 9, 1979, is required for Cessna Models T310P, T310Q, and T310R with TSIO-520-N Engines and McCauley 3AF32C93/82NC-5.5 propellers;

OR dated April 30, 1981, with TSIO-520-N or –NB Engines and McCauley 3AF32C93/82NC-5.5 propellers;

OR dated February 12, 1982, with TSIO-520-N or –NB Engines and McCauley 3AF32C93/82NC-5.5 or 3AF32C505/82NEA-5.5 propellers;

OR dated March 4, 1982, with TSIO-520-NB Engines modified by STC No.

SE4327SW and Hartzell PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/ FC7663DB-2Q propellers;

OR dated May 17, 1982, with TSIO-520-N or –NB Engines and Hartzell PHC-C3YF/FC7663DB-2Q propellers;

OR dated May 3, 1988, with TSIO-520-NB Engines modified by STC No. SE4327SW and Hartzell PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/FC7663DB-2Q propellers.

FAA Form 8110-2-1(10-69) Page 4 of 4

N umber SA4011SW Date of Issuance: July 09, 1979 Date Amended: May 03, 1988 Reissuance Date: October 8, 2001

c. Dated February 26, 1986, is required for Cessna Models T310P and T310Q with TSIO-520-NB Engines modified by STC No. SE4327SW and Hartzell PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/FC7663DB-2Q propellers;

OR dated November 5, 1986, with TSIO-520-NB Engines modified by STC No.

SE4327SW and Hartzell PHC-C3YF-2UF/FC7663D-2Q or PHC-C3YF-2UF/ FC7663DB-2Q propellers.

2. Only those airplanes operated in accordance with the AFMS listed in 1(c) are eligible at a takeoff gross weight of 5670 lbs.

3. Compatibility of this modification with other previously approved modifications must be determined by the installer. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

-END-

## Every issue (1)

- January 8, 2001: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/42/86/4286dac75dc4c9a77d95ad4e5725e30ff671f318ebfdc9327d3c00caa5f29fe6)

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