# STC SA1091GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc., United States
- Description: Installation of Grimes Floor Proximity Lighting System P/N 10-1309-21 or 10-1309-23.
- Applied: April 9, 1986
- Status date: June 4, 2007
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/a1/aa/a1aa5e951c8c72ae9a330779b0029efe051de0311ace82c12335229a4c4f7feb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/82066376B539BA7986257346006A42B6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1091GL

## ADs that name it (0)

None.

## Approved models (2)

- The Boeing Company 747-100 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## 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.

Part 25 of the Federal Aviation Regulations.

(See Type Certificate Data Sheet No. A20WE for complete certification basis. In addition, compliance with FAR 25.812 (e), Amdt.

25-58, has been demonstrated).

Installation of Grimes Floor Proximity Lighting System P/N 10-1309-21 or 10-1309-12 in accordance with Grimes Master Drawing List, 747-200 series, MDL 10-1309, Rev. D, dated May 28, 1992, and and Grimes Engineering Order 10-1309-23, N/C, dated October 17, 1986, or other FAA Approved revisions of these documents.

1) This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of these aircraft.

2) 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.

Honeywell International Inc.

550 Route 55 Urbana, OH 43078 A20WE Make :

747-100, -200B

Boeing Company Model :

Date of application : April 9, 1986

Date of issuance : November 17, 1986

Date reissued : May 5, 1988, November 3, 1992, June 4, 2007

Date amended : November 3, 1992

(Signature) Charles L. Smalley Manager, Systems and Flight Test Branch Chicago Aircraft Certification Office

(Title)

## Every issue (1)

- June 4, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a1/aa/a1aa5e951c8c72ae9a330779b0029efe051de0311ace82c12335229a4c4f7feb)

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