SAIB NM-05-31 —

SAIB NM-05-31 Current Issued 02/04/2005 Bombardier Inc. CL-600-2B19

What is a SAIB?

A Special Airworthiness Information Bulletin is an FAA-issued advisory — not mandatory like an AD, but worth knowing about. SAIBs typically flag service bulletins, manufacturer recommendations, or emerging issues that don't (yet) rise to AD level.

Bulletin text

Verbatim from the FAA-published PDF. 15 paragraphs · 192 words.

1 SPECIAL AIRWORTHINESS INFORMATION BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

NM-05-31 February 4, 2005 www.faa.gov/certification/aircraft This is information only. Recommendations aren’t mandatory.

Introduction

The Special Airworthiness Information Bulletin (SAIB) advises you, owners and operators of Bombardier model CL-600- 2B19 aircraft, that we have received reports of higher-than-expected levels of dual-channel disconnects of the horizontal stabilizer trim system. This problem posts STAB TRIM and MACH TRIM caution messages on EICAS. Bombardier is undertaking an engineering investigation to address the root causes of this issue.

Background

Bombardier has issued an All Operator Message (AOM) # 870, (copy attached) to provide advice for aircrew in order to mitigate any handling or control issues which may arise. We anticipate that a further revision to the CL-600-2B19 aircrew publications (FCOM and/or AFM) will follow to formalize some of the advice.

Recommendations

We strongly recommend that you review AOM #870, and familiarize yourselves with the associated abnormal procedures in AFM revision 56.

For Further Information Contact

FAA, Dan Parrillo, NYACO, ANE-172, 1600 Stewart Ave, Suite 410, Westbury, N.Y. 11590; Tel: (516) 228-7305; Fax: (516) 794- 5531; email: [email protected]

The FAA-published PDF is the authoritative source. Open on drs.faa.gov ↗