# Proposed AD FAA-2008-0266: Bombardier Model DHC-8-102, DHC-8-103, DHC-8-106, DHC-8-201, DHC-8-202, DHC-8-301, DHC-8-311, and DHC-8-315 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-09-25
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 11, 2008, 73 FR 12912
- Comments due: April 10, 2008
- Became: [AD 2008-09-25](https://openairdocs.org/ad/2008-09-25)
- Docket: FAA-2008-0266 (https://www.regulations.gov/docket/FAA-2008-0266, where comments are filed)
- Project: 2008-NM-013-AD
- FR document: E8-4772
- Official PDF: https://openairdocs.org/files/sha256/7b/0e/7b0ee8190e891f66a42cc0e981d15fc3a281bb93501c767b316ee1f41b72760e (from https://www.govinfo.gov/content/pkg/FR-2008-03-11/pdf/E8-4772.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/03/11/E8-4772/airworthiness-directives-bombardier-model-dhc-8-102-dhc-8-103-dhc-8-106-dhc-8-201-dhc-8-202
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/979BAE11A09936E88625740900512CA7.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0266

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Bombardier Aerospace has completed a system safety review of the aircraft fuel system against fuel tank safety standards introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002-043. The identified non-compliances were then assessed using Transport Canada Policy Letter No. 525-001, to determine if mandatory corrective action is required.

The assessment showed that it is necessary to introduce Critical Design Configuration Control Limitations (CDCCL), in order to preserve critical fuel tank system ignition source prevention features during configuration changes such as modifications and repairs, or during maintenance actions. Failure to preserve critical fuel tank system ignition source prevention features could result in a fuel tank explosion. * * *

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Mar 11, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-4772, comments due Apr 10, 2008 (https://www.federalregister.gov/documents/2008/03/11/E8-4772/airworthiness-directives-bombardier-model-dhc-8-102-dhc-8-103-dhc-8-106-dhc-8-201-dhc-8-202)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.