# Proposed AD FAA-2006-26401: B-N Group Ltd. BN-2, BN-2A, BN-2B, BN- 2T, and BN-2T-4R Series (All Individual Models Included in Type Certificate Data Sheet (TCDS) A17EU, Revision 16, Dated December 9, 2002), and BN-2A-Mklll Trislander Series (All Individual Models Included in Type Certificate Data Sheet (TCDS) A29EU, Revision 4, Dated December 9, 2002) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2007-06-06
- Products: B-N Group
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 22, 2006, 71 FR 76952
- Comments due: January 22, 2007
- Became: [AD 2007-06-06](https://openairdocs.org/ad/2007-06-06)
- Docket: FAA-2006-26401 (https://www.regulations.gov/docket/FAA-2006-26401, where comments are filed)
- Project: 2006-CE-72-AD
- FR document: E6-21924
- Official PDF: https://openairdocs.org/files/sha256/e5/8f/e58f1f6322b340ef150f238c01ef735c280fbb15cd4bbf0f6bb4b392170d4059 (from https://www.govinfo.gov/content/pkg/FR-2006-12-22/pdf/E6-21924.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/12/22/E6-21924/airworthiness-directives-b-n-group-ltd-bn-2-bn-2a-bn-2b-bn-2t-and-bn-2t-4r-series-all-individual
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E5906857298242D78625724C0050E877.0001
- Page: https://openairdocs.org/proposed/FAA-2006-26401

## 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) issued 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: "incidences have been reported to Britten-Norman Aircraft Ltd where cracks have been found in the inner shell of the pitot/static pressure heads. This could result in incorrect readings on the pressure instrumentation, e.g. altimeters, vertical speed indicators (rate-of-climb) and airspeed indicators.'' The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Dec 22, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-21924, comments due Jan 22, 2007 (https://www.federalregister.gov/documents/2006/12/22/E6-21924/airworthiness-directives-b-n-group-ltd-bn-2-bn-2a-bn-2b-bn-2t-and-bn-2t-4r-series-all-individual)

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