# STC SA671SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Apache Modification Aircraft Corporation
- Description: Dorsal fin and square rudder modification.
- Status date: October 10, 1997
- Data sheets: 1A10, 1A10
- Certificate PDF: https://openairdocs.org/files/sha256/90/d0/90d064494b2a2bec3011050929a6f9ef6306720f0ad4a5346f3fb34485a6a7fa
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2B0C7F496E95690C85256CC200569FF9.0001
- Page: https://openairdocs.org/stc/SA671SW

## ADs that name it

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23 (TCDS 1A10)
- Piper Aircraft Inc. PA-23-160 (TCDS 1A10)

## 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.

~lnittb ~ta:tt. aDfl\nuricll ~rp"rlmrnl of 'l!rr"nsporl"lion - Jlfrorr,,1 J\ftmlion J\ominislrnlion ~~ ~?4A7/~ N.,wU''''//o Apache Modification Aircraft Corporation 1893 Airport Road Kalispell, MIT 59901 """"'94'.•••dr/ d'...<kA?~ V. d'...~.I'~ "'..up ft..d'...~~ ~d uW.,(' d'...t:nu7«~ aAd' ~,;..",., ~ d'"~/-d ..c....v.hHW'.> d'...d';"~.,('v....... ""'P'«~'> o/~A' 30/d'... Ci vi1 Air~a&d.-;..",.,.

&,,",jTv.utf'~d ~.I'~ ~?"'~/~ JV~ ..

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1A10 Piper PA-23, PA-23-l60 ~.w. o/~~ ~ ~A?~.

Dorsal fin and square rudder modification in accordance with Seguin Aviation Drawing List 702 revised February 18, 1976, or later FAA approved revision .

.2fv..u7«~ dAd'~d'~.

This modification also eligible on Piper Models PA-23 and P-23-160 eqiupped with Lycoming 0-360 Series 180 horsepower engines.

(Sec continuation sheet 3 oD) .9W~~~_~ Hnd a;.oU'9'Y'.-:W.r.Ao,?L"/:'/U ,J,d L"~ d &,~~/J.- u~/.d'nd,NYIurm Ur- ~ euJ£ ~ ~~ ~~~« /&'V7,"UurA-M- ~k I"~ ~...r~~N/a~/~d ../&/~<Y'o/d .¥tv/ __ / ~a/I"M- ~Wu:J/."..,.,/«-.

Sit-/~o/d.lY""i~;". ..April 11, 1966 Sit-ko/ •••.••.•.,,~ ..July 13, 1966 (Tit/e) (Signature) A.J. Merrill, Manager Special Certification Office Southwest Region Ally oIlteroltfon of thIs certlfJcoIte' JJ punJsholbl", by 01 fJn", of not e1Cce~lnq $1,000, or J.prlsonll't"nt not exC'E'<!'dlnq J yeolrs. or both.

FAA Foe. 8110-2110-68) Paqe 1 of )

~nitrh 5'tatrl5 Qf)flunrrica c!9cpnrtmcnl of 'Clrrnnsportnlion - JIfcllcrnl cAbinlion !'l\minislrnlion ~upplcmental 'illtlPCQIcrtifit:atc (QIontinuntion J&~eet) Date of Issuance:

SA671SW July 13, 1966 ..z'mwa/~ «",d~.i"' •..c.-w.(Continued) 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.

Ally .lter.efon of thfs c.rtJfic.t~ is punfsh.bl~ by d fin •• of not .,xceedJnq 5J,000, Or JMlpdson_nt not fuce9dlnq 3 ye.rs, or both.

fAA for_ 8110-2-1 (10-69) Page 3 of 3

## Every issue (1)

- October 10, 1997: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/90/d0/90d064494b2a2bec3011050929a6f9ef6306720f0ad4a5346f3fb34485a6a7fa)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.