Transportation Department Docket FAA-2017-0324 Proposed Rule

2017-07775: Airworthiness Directives; Aerospace Welding Minneapolis, Inc. Mufflers

Comment Period Closed

Public comment closed .

Get alerted when the next rule lands

New rules open for comment on their own schedule. Pick how you want to hear about them — we email you when one appears.

Alert me on new Transportation Department rules or alert me on a subject

Publishing to members? Embed a live rule tracker on your own site — the proposed rules in your area and the comment deadlines closing on them, updating themselves. Free, one line of HTML.

Create a free account & build one →

Summary

We propose to adopt a new airworthiness directive (AD) for certain Aerospace Welding Minneapolis, Inc. mufflers, part numbers A1754001-23 and A1754001-25, installed on Textron Aviation Inc. (type certificate previously held by Cessna Aircraft Company) Models 172, 172R, 172S, and 177 airplanes. This proposed 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 proposed AD would require an inspection of the muffler for leaking to identify cracks and replacement of the muffler. We are proposing this AD to correct the unsafe condition on these products.

The agency’s own summary, as published.

What this changes

Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.

Don't miss the comment window

One Click Politics alerts you on every deadline, hearing, and rule change.

See all rules with comments due soon →