Airworthiness Directives; Boeing Model 747 Series Airplanes Powered By Pratt & Whitney JT9D-7 Series Engines
airworthiness · Rule · Final rule; request for comments. · Published 2000-09-01 · Effective 2000-09-18 · 65 FR 53161
Document
Document number
00-22284
Federal Register citation
65 FR 53161
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Boeing Model 747 Series
Publication date
2000-09-01
Effective date
2000-09-18
FAA docket
Docket No. 2000-NM-270-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 747 series airplanes powered by Pratt & Whitney JT9D-7 series engines. This action requires inspection of the lugs on the bulkhead fitting of the rear engine mount, and corrective action, if necessary. This action is necessary to detect and correct bushing migration, corrosion, or cracking of the lugs on the bulkhead fitting of the rear engine mount, which could result in separation of the engine from the airplane. This action is intended to address the identified unsafe condition.