# Proposed AD FAA-2013-0352: Sikorsky Aircraft Corporation Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-19-16
- Products: Sikorsky
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 22, 2013, 78 FR 23698
- Comments due: June 21, 2013
- Became: [AD 2013-19-16](https://openairdocs.org/ad/2013-19-16)
- Docket: FAA-2013-0352 (https://www.regulations.gov/docket/FAA-2013-0352, where comments are filed)
- Project: 2012-SW-063-AD
- FR document: 2013-09406
- Official PDF: https://openairdocs.org/files/sha256/49/59/4959ed9b703c99fc9ad13e5f6bf570b49f01fb1e9b7f0f7f31f9d777829e4211 (from https://www.govinfo.gov/content/pkg/FR-2013-04-22/pdf/2013-09406.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/04/22/2013-09406/airworthiness-directives-sikorsky-aircraft-corporation-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F50F84E2D15FC37586257B5500576DDC.0001
- Page: https://openairdocs.org/proposed/FAA-2013-0352

## Summary

We propose to adopt a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters to require modifying the No. 1 engine forward firewall center fire extinguisher discharge tube (No. 1 engine tube). This proposed AD is prompted by the discovery that the No. 1 engine tube installed on the helicopters is too long to ensure that a fire could be effectively extinguished on a helicopter. The proposed actions are intended to ensure the No. 1 engine tube would allow for complete coverage of an extinguishing agent in the No. 1 engine compartment area, ensure that a fire would be extinguished and prevent the loss of helicopter control.

## Notices in this docket

- Apr 22, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-09406, comments due Jun 21, 2013 (https://www.federalregister.gov/documents/2013/04/22/2013-09406/airworthiness-directives-sikorsky-aircraft-corporation-helicopters)

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