# Proposed AD FAA-2021-0715: Various Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-03-15
- Products: Various Manufacturers
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 27, 2021, 86 FR 48070
- Comments due: October 12, 2021
- Became: [AD 2022-03-15](https://openairdocs.org/ad/2022-03-15)
- Docket: FAA-2021-0715 (https://www.regulations.gov/docket/FAA-2021-0715, where comments are filed)
- Project: AD-2021-00259-A
- FR document: 2021-18385
- Official PDF: https://openairdocs.org/files/sha256/e2/a8/e2a8d871be6baddbd606f56824e7a8d43119c42f9bfcce9123da1a7f422672ca (from https://www.govinfo.gov/content/pkg/FR-2021-08-27/pdf/2021-18385.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/08/27/2021-18385/airworthiness-directives-various-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1726F002134C96C88625873E006D6EA3.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0715

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for various airplanes modified with certain configurations of Garmin G3X Touch Electronic Flight Instrument System installed per Supplemental Type Certificate (STC) No. SA01899WI or Garmin GI 275 Multi-Function Display System (MFDS) installed per STC No. SA02658SE. This proposed AD was prompted by a report of a fuel quantity disparity between the amount of fuel indicated and the actual amount of fuel. This proposed AD would require modifying the resistive fuel probe interface. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 27, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-18385, comments due Oct 12, 2021 (https://www.federalregister.gov/documents/2021/08/27/2021-18385/airworthiness-directives-various-airplanes)

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