Airworthiness Directives; McDonnell Douglas Model DC-9-31 and DC-9-32 Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2003-10-03 · Effective 2003-10-20 · 68 FR 57339
Document
Document number
03-24681
Federal Register citation
68 FR 57339
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
McDonnell Douglas Model DC-9-31 and DC-9-32
Publication date
2003-10-03
Effective date
2003-10-20
FAA docket
Docket No. 2003-NM-61-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9-31 and DC-9-32 airplanes. This action requires, among other actions, various inspections to detect cracks of the cockpit enclosure window sill, and follow-on and corrective actions, as applicable. This action is necessary to prevent fatigue cracking of the internal doublers and frame structure of the fuselage skin of the cockpit enclosure window sill, which could result in rapid decompression of the fuselage and consequent reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.