# Proposed AD 2003-NM-222-AD: Bombardier Model DHC-8-101, -102, -103, -106, -201, -202, -301, -311, and -315 Airplanes on Which Engine Oil Coolers Have Been Installed Per LORI, Inc., Supplemental Type Certificate (STC) SA8937SW

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-09-31
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 26, 2004, 69 FR 3533
- Comments due: February 25, 2004
- Became: [AD 2004-09-31](https://openairdocs.org/ad/2004-09-31)
- Docket: 2003-NM-222-AD
- FR document: 04-1562
- Official PDF: https://openairdocs.org/files/sha256/8b/11/8b119927234e87a43230d346e4cd2e3e586a1769d8bcad8dc70e94cd51315baf (from https://www.govinfo.gov/content/pkg/FR-2004-01-26/pdf/04-1562.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/01/26/04-1562/airworthiness-directives-bombardier-model-dhc-8-101--102--103--106--201--202--301--311-and--315
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F1B068F57B0A2D3C86256E27005308C7.0001
- Page: https://openairdocs.org/proposed/2003-NM-222-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Bombardier Model DHC-8-101, -102, -103, -106, -201, -202, -301, -311, and -315 airplanes on which engine oil coolers have been installed per LORI, Inc., STC SA8937SW. This proposal would require an inspection or a review of the airplane maintenance records to determine the part number and serial number of each engine oil cooler, and replacement of certain engine oil coolers with reworked engine oil coolers. This action is necessary to prevent oil leakage from the engine oil coolers, consequent in-flight engine shutdown due to low oil pressure, and reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jan 26, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-1562, comments due Feb 25, 2004 (https://www.federalregister.gov/documents/2004/01/26/04-1562/airworthiness-directives-bombardier-model-dhc-8-101--102--103--106--201--202--301--311-and--315)

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