# STC SA1440GL

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aviation Technologies Group, United States
- Description: Installation of microswitch landing gear switches consisting of main gear down lock switch, P/N 1HE24-12, nose gear down lock switch, P/N 21HE28-12, weight-on-wheels switch, P/N 21HE29-12 and uplock switches, P/N 402HE2-12B.
- Status date: January 23, 1990
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A41EU](https://openairdocs.org/tcds/A41EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1212B74877E3383285256CC1008210F8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1440GL

## ADs that name it (0)

None.

## Approved models (1)

- Short Brothers PLC SD3-60 ([TCDS A41EU](https://openairdocs.org/tcds/A41EU))

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