# Proposed AD 2001-CE-24-AD: Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-22-15
- Products: Pilatus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 22, 2001, 66 FR 44093
- Comments due: September 21, 2001
- Became: [AD 2001-22-15](https://openairdocs.org/ad/2001-22-15)
- Docket: 2001-CE-24-AD
- FR document: 01-21140
- Official PDF: https://openairdocs.org/files/sha256/c6/fa/c6fa5c3e81c132f56250e686c503c46170e19e8a2b058e7a80b34d1106df6e6b (from https://www.govinfo.gov/content/pkg/FR-2001-08-22/pdf/01-21140.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/08/22/01-21140/airworthiness-directives-pilatus-aircraft-ltd-models-pc-12-and-pc-1245-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F18922F09E17AA4C86256AB20046D2A6.0001
- Page: https://openairdocs.org/proposed/2001-CE-24-AD

## Summary

This document proposes to adopt a new airworthiness directive (AD) that would apply to all Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC-12/45 airplanes. The proposed AD would require you to inspect the cargo doors to identify front and rear end frames with plain lightening holes and install reinforcing plates on any frame with plain lightening holes. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by the proposed AD are intended to prevent cracking at the edges of the unflanged lightening holes, which could result in major structural damage to the airplane. Such damage could result in possible loss of control of the airplane.

## Notices in this docket

- Aug 22, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-21140, comments due Sep 21, 2001 (https://www.federalregister.gov/documents/2001/08/22/01-21140/airworthiness-directives-pilatus-aircraft-ltd-models-pc-12-and-pc-1245-airplanes)

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