# Proposed AD FAA-2007-0048: Construcciones Aeronauticas, S.A. (CASA), Model CN-235, CN-235-100, CN-235-200, CN-235-300, and C-295 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-09-22
- Products: Construcciones Aeronauticas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 17, 2007, 72 FR 58770
- Comments due: November 16, 2007
- Became: [AD 2008-09-22](https://openairdocs.org/ad/2008-09-22)
- Docket: FAA-2007-0048 (https://www.regulations.gov/docket/FAA-2007-0048, where comments are filed)
- Project: 2007-NM-181-AD
- FR document: E7-20470
- Official PDF: https://openairdocs.org/files/sha256/eb/11/eb119f69f091126d5a7ca7d0cda2a6e9266ea9f82cfce70f2cf3cb6d5a1e58e0 (from https://www.govinfo.gov/content/pkg/FR-2007-10-17/pdf/E7-20470.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/10/17/E7-20470/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-cn-235-cn-235-100-cn-235-200
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4F7095368752BA1B86257377005057B4.0001
- Page: https://openairdocs.org/proposed/FAA-2007-0048

## 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:

Subsequent to accidents involving Fuel Tank System explosions in flight * * * and on ground, * * * Special Federal Aviation Regulation 88 (SFAR88) * * * required a safety review of the aircraft Fuel Tank System * * *. * * * * *

Fuel Airworthiness Limitations are items arising from a systems safety analysis that have been shown to have failure mode(s) associated with an `unsafe condition' * * *. These are identified in Failure Conditions for which an unacceptable probability of ignition risk could exist if specific tasks and/or practices are not performed in accordance with the manufacturers' requirements.

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

## Notices in this docket

- Oct 17, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-20470, comments due Nov 16, 2007 (https://www.federalregister.gov/documents/2007/10/17/E7-20470/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-cn-235-cn-235-100-cn-235-200)

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