# STC SA1838SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Qualitron Aero, Inc, United States
- Description: Installation of standby gyro system.
- Applied: April 2, 1974
- Status date: March 22, 1974
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2SW](https://openairdocs.org/tcds/A2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/27/fc/27fcf1bb9a06f2c0ed100addc9dfec68842507ab487b84577e3e3c86fcb3a3bd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9CE71B890A7E68ED85256CC10083D16D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1838SW

## ADs that name it (0)

None.

## Approved models (2)

- Israel Aircraft Industries Ltd. 1121A ([TCDS A2SW](https://openairdocs.org/tcds/A2SW))
- Israel Aircraft Industries Ltd. 1121B ([TCDS A2SW](https://openairdocs.org/tcds/A2SW))

## 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.

Unittd £tatts of Slmmca ©epartmEnt of transportation— federal aoiation administration Supplemental t:ujje Certificate SA1838SW Qualltron Aero, Inc.

17795 Jolm F Kennedy Blvd.

P 0. Box 60374 Houston, Texas 77060 ffmt &lf f&iavijWiwffatySwfl&ijipm^^ dfajiWtw'i'.na StevicUtfJ an'

•StGg4t£a&&nA'.

(jir«Mnid •Swctaf£ —— . ,/j^4* fatrfaKcafaiyiartnev* . A2SW Project T2855SW-S JDS-213 a fit/ fj'rnl^'A'i- ClVil Air Israel Industries, Ind.

112 IA, 1121B : Installation of Standby Attitude Gyro according to Qualitron Aero, Inc. Drawing Ust 73T-6120-3100, Ravisiou D, dated 3/19/74.

FAA Approved Airplane Flight Manual Supplement dated March 22, 1974, Is required.

April 2, 1974 March 22, 1974 Don P Watson /"'Acting Chief, Engineering and Manufacturing Branch ('Tilt,) Any alteration of thii certificate « punishable by a fine of not exceeding 11,000, or imprisonment not exceeding 3years, or both.

This certificate may be tfarts/errfd irt actordarift wtth FAR 2t.17.

FAAFoui II 10-3 (10-41)

f :,'(-• . <} '»..-» ;•-'.;. frr1"' [ NS I Kl'('. I M INS The- transfer rndi >r<,f men I below may he usrd to nuiifv I hi' iipprupriaic FA A Regional Office of I he (iMnslr-r nf ihi^ Supplrrurnldt I % pe f >'rnlu -ire 1 In- I'.\A vull rris^m' lh'L (.<Tlifu air m lhiL namr of (hr rransfrriT anil lonvartl U To him.

TRANSFER ENDORSEMENT Transfer (lie uvincrsriip of Supple mental Type Certificate Number to (Name HJ transfrret) (Ad/ires', nj

t.\umbei and V • t. \lalr .and ~IP rixir ) from (JVamr nf gfantnr) (I'nnt or type) .

(Address nj grantor) t-\'tintt>rr antt strffl > Cift , Stair, and -IIP fottrl Extent of Authority (if licensing agreement):

Signature nf grantor (In ink):.

^ ..M. . , C FA* AC 6!)-5S36

## Every issue (1)

- March 22, 1974: Issued, Current. [certificate](https://openairdocs.org/files/sha256/27/fc/27fcf1bb9a06f2c0ed100addc9dfec68842507ab487b84577e3e3c86fcb3a3bd)

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