# STC SA01289CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: McCauley Propeller Systems, United States
- Description: Installation of McCauley 4HFR34C665/L106FRA-2 model propeller, E-7155 spinner, and de-ice system.
- Applied: October 13, 1998
- Status date: July 19, 2006
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- Certificate PDF: https://openairdocs.org/files/sha256/f0/6c/f06c28acf189c3fb683d60a1b0b20e5a422e007c13e198b9d72f32fb2da70229
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/97FA432CAE5DEBC8862571CD005B5E4C.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA01289CH

## ADs that name it (0)

None.

## Approved models (3)

- Twin Commander Aircraft Corporation 690 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft Corporation 690A ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft Corporation 690B ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

## 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.

FAA FORM 8110-2(10-68) PAGE 1 of 2 PAGES Number SA01289CH This certificate issued to McCauley Propeller Systems 7751 East Pawnee Wichita, KS 67207

Part 3 of the Civil Air Regulations.

See Type Certificate Data Sheet 2A4 for complete certification basis.

Original Product--Type Certificate Number: 2A4 Make: Twin Commander Aircraft Corporation Model: 690, 690A, and 690B Description of Type Design Change:

Installation of a McCauley 4HFR34C665/L106FRA-2 model propeller, E-7155 Spinner, and De-ice system in accordance with McCauley Installation Instructions TR928, dated February 7, 2000, or later FAA Approved revision.

1. Compatitibility of this change with previously approved modifications must be determined by the installer.

2. Incorporation of Twin Commander Engine Nacelle Firewall Reinforcement, Drawing NO. 610680, Rev. A, dated September 27, 1999 and Details, Firewall Modifications, Drawing NO. K660000, Rev. A, dated September 27, 1999 is required.

3. FAA Approved Airplane Flight Manual Supplement TR927, dated August 3, 2000 or later FAA approved revision is required.

4. This modification did not increase the noise level and was not considered an acoustical change as defined in paragraph 14 CFR

21.93(b).

5. 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.

Date of application : October 13, 1998

Date of issuance : August 10, 2000 Date reissued : July 19, 2006

( Signature) Thaddeus D. Krolicki, Jr.

Manager, Propulsion Branch Chicago Aircraft Certification Office

(Title)

## Every issue (1)

- July 19, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f0/6c/f06c28acf189c3fb683d60a1b0b20e5a422e007c13e198b9d72f32fb2da70229)

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