# STC SA2-194

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Rockwell Collins Inc, United States
- Description: Installation of Collins AP-101 autopilot.
- Applied: May 23, 1957
- Status date: April 24, 2000
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-618](https://openairdocs.org/tcds/A-618), [TCDS A-669](https://openairdocs.org/tcds/A-669)
- Certificate PDF: https://openairdocs.org/files/sha256/79/78/7978402d157fd7ab85d91aa60000dcff77beb0bfe1a4db43e1ff7f83710a4f55
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/69AA85AE4310C91385256CC10083D452.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2-194

## ADs that name it (0)

None.

## Approved models (14)

- The Boeing Company DC3-G102 ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3-G102A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3-G103A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3-G202A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3A-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-S1CG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-SCG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3D-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2-194 This certificate issued to: Rockwell Collins, Inc.

400 Collins Road NE, MS 164-100 Cedar Rapids, IA 52498 Purt 4b of the Civil Air Regulations.

Original Product Type Berlificute Number: 618, 669 Make: Douglas Model: DC-3 Series Description of Type Design Change:

Compatibility of this design change with 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.

Date of Application: May 23, 1957 Date Reissued: June 25, 1999, April 24, 2000 Date of Issuance: July 18, 1957 Date Amended: 6/26/58; 9/16/58; 5/12/59 By Direction of the Administrator Vale R. Korts (Signature) Dale R. Koonts

TOMINISTRATO Manager, DAS-3CE (Title) 47

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA2-194 Description of Type Design Change: (Continued):

Installation of Collins AP-101 autopilot in accordance with Collins Instruction Books, Part No.'s 520 535100 (AP-101 A/B/C/D) and 520 552500 (AP-101E), and Collins DC-3 autopilot drawing list No. 1 as revised June 26, 1958, for airplanes certificated under SR407, and equipped with geared rudder tab or as revised July 25, 1958, for airplanes without geared rudder tab and with maximum gross weight of 26,200 Ibs. and maximum take-off H.P. of 1200 B.H.P.

NOTE:

Collins Radio Co. CAA approved Airplane Flight Manual Supplement, dated 7/18/57, or 8/14/57, or 11/6/57, or 6/17/58, required with this modification when Douglas DC-3 airplanes are certificated under SR407 and equipped with geared rudder tab.

For Douglas DC-3 airplane having a CAA approved AFM, having maximum gross weight of 26,200 1bs., and having maximum take-off H.P. of 1200 B.H.P., Collins Radio Co. approved AFM dated August 7, 1958, is required.

3. Satisfactory electrical load analysis required with this modification.

-END-

PAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

## Every issue (1)

- April 24, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/79/78/7978402d157fd7ab85d91aa60000dcff77beb0bfe1a4db43e1ff7f83710a4f55)

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