Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule. · Published 2015-05-12 · Effective 2015-06-16 · 80 FR 27074
Document
Document number
2015-10069
Federal Register citation
80 FR 27074
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2015-05-12
Effective date
2015-06-16
FAA docket
Docket No. FAA-2014-0429
Abstract
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 and 747-400F series airplanes. This AD was prompted by reports of cracking in the main equipment center (MEC) drip shield and exhaust plenum. This AD requires installing a fiberglass reinforcing overcoat on the MEC drip shield. We are issuing this AD to prevent water penetration into the MEC, which could result in an electrical short and potential loss of several functions essential for safe flight.