# STC SA1808SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system Model AK446 or AK446FD consisting of Century IV autopilot or Century IV flight director autopilot with command/autopilot electronic pitch trim.
- Applied: February 1, 1974
- Status date: August 1, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A16](https://openairdocs.org/tcds/3A16)
- Certificate PDF: https://openairdocs.org/files/sha256/04/76/047614408ac7d4ef2a6d0550c2d6fd9019ea60274af9abd7ee83e1b28a6ec148
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BAE7072B26A47B5F85256CC10083D0E5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1808SW

## ADs that name it (0)

None.

## Approved models (11)

- Beechcraft Corporation 95-55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-A55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-B55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-B55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-B55B ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-C55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-C55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation D55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation D55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation E55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation E55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))

## 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.

Btpartmtnt of transportation—.federal Station administration Supplemental t:uje Certificate SA1808SW Century Flight Systems, Inc. ' ' P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 i J&e Jyfif.deAia.njtirr Jfoftdlcx&ifwft>i*du^a'i&jA&Ji6rrU£a/{&n&4t^^ 4foju>i**it>i&j/n4^a*aj^*ernen&t>p;yat*t 3 j^'.&i#, Civil Air 3 A16 BEECH 95-55, 95-A55, 95-B55, 95-B55A, 95-B55B, 95-C55, 95-C55A, D55, D55A, E55 and E55A Installation of Mitchell Automatic Flight System Model AKA46 or AK446FD consisting of Century IV Autopilot or Century IV Flight Director Autopilot with Command/Automatic Electronic Pitch Trim according to Bulletin No. 569, Revision (3), dated 7-1-75 and Master Drawing List No. 87A700, Revision C, dated 7-1-75.

The following FAA Approved Airplane Flight Manual Supplements are required:

1. P/N 68S158, dated 2-15-74 is required for Beech Models 95-55, 95-A55, 95-B55, 95-B55A, 95-B55B.

2. P/N 68S159, dated 2-15-74 is required for Beech Models 95-C55, 95-C55A, D55, D55A, E55 and E55A.

approved modifications &r^ni^^ij>9^j^^^ii£4^^^rtd^^^/a^i^A^^^^Af--^aTtitn^^ra/i-^i^^Af ,~*: February 1, 1974 C/«6 „<**„*,/ 8-14-75; 8-1-84, Revision 2 February 15, 1974 ^'<,&« P. Watson Manager, Aircraft Certification Division Southwest Region (Title) _ alteration of this certificate » punishable by a fine of not exceeding tl.OOO, or imprisonment not exceeding 3 yean, or both.

This certificate may tit liansferrtd in accoidanit with f-AR 21.17.

FAA FMM It 10-J 110-01)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) urnbti and i ICif,, Slate, ai from (Name of grantor) (Print or type) (Address of grantor) (Number and ttltrt) I City, Slalr, and £IP adl) Extent of Authority (if licensing agreement):

Dale of Transfer:.

Signature of grantor (In ink):.

**C FAA AC 69-S536**

## Every issue (1)

- August 1, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/04/76/047614408ac7d4ef2a6d0550c2d6fd9019ea60274af9abd7ee83e1b28a6ec148)

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