Airworthiness Directives; Boeing Model 707 Airplanes and Model 720 and 720B Series Airplanes
airworthiness · Rule · Final rule. · Published 2004-12-09 · Effective 2005-01-13 · 69 FR 71347
Document
Document number
04-26794
Federal Register citation
69 FR 71347
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Boeing Model 707
Publication date
2004-12-09
Effective date
2005-01-13
FAA docket
Docket No. FAA-2004-19228
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Boeing Model 707 airplanes and Model 720 and 720B series airplanes. This AD requires repetitive inspections of the left and right support ribs for the main landing gear (MLG) trunnion, related investigative/ corrective actions if necessary, and other specified actions. This AD is prompted by reports of in-service cracking of the support ribs for the MLG trunnion. We are issuing this AD to detect and correct corrosion and cracking of the support ribs for the MLG trunnion, which could result in collapse of the MLG.