# STC SA1825SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Qualitron Aero, Inc, United States
- Description: Installation of Bendix ALA-51 radio altimeter.
- Applied: April 2, 1973
- 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/c1/26/c12696e57992f564c6487319312117bb4dbd228a17f1fa4bbde455d7f5e35ce1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6FA0FFEC0D2E36AD85256CC10083D139.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1825SW

## 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.

<-Slfau£a'ii&>fidr.

Hntttd gtatrs of ammra Bepartment of ^Transportation -federal SlQiation Administration Supplemental TCuje Certificate SA1825SW Qualitron Aero, Inc.

17795 John F Kennedy Blvd.

P 0. Bo* 60374 Houston, Texas 77060 Project T2642SW-DS JDS-213 Uracl InJuatries, Ind.

. U2» -: Inatr.llation of Ben4ix ALA-51 Radio Altiicettr according to Qualitron A«ro, lac. D^-rtng U»t 73T-6120-1900, Reviaion D, dated 4/26/74.

FAA Approved Alrpiaiw Flight Manual Supplement dated t.arch 22, 1974, is required.

April 2, 1973 March 22, 1974 u> Don P. Watson Acting Chief, Engineering and Manufacturing Branch

7Au artificale may bt transferrtd in accordance with FAR 21.47.

FAA FonMBl 10-2 (iO-66|

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) Xumbfi Hurl stifft} (Cify, Ktalt, and ^IP ladr) from (Name of grantor) (Print or type) (Address of grantor) (Number and itjeetj (City, Stall, and QP rorff J Extent of Authority (if licensing agreement):

-- vr'-- ' ' ' ' C ' Signature of grantor (In ink):

**C FAA AC 69-5536**

## Every issue (1)

- March 22, 1974: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c1/26/c12696e57992f564c6487319312117bb4dbd228a17f1fa4bbde455d7f5e35ce1)

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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.