airworthiness · Rule · Final rule. · Published 2018-01-17 · Effective 2018-02-21 · 83 FR 2354
Document
Document number
2018-00479
Federal Register citation
83 FR 2354
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2018-01-17
Effective date
2018-02-21
FAA docket
Docket No. FAA-2017-0324
Abstract
We are adopting a new airworthiness directive (AD) for certain Aerospace Welding Minneapolis, Inc. mufflers, part numbers A1754001-23 and A1754001-25, installed on airplanes. This AD was prompted by occurrences of cracks or broken welds in the connecting weld of the muffler body to muffler cuff that may allow carbon monoxide exhaust fumes into the cockpit heating system. This AD requires an inspection of the muffler for leaking to identify cracks and replacement of the muffler. We are issuing this AD to address the unsafe condition on these products.