Airworthiness Directive · Amendment 39-8946 · The Boeing Company Airplanes
The Boeing Company Airplanes
Superseded. A later AD replaced this one: AD 2013-22-06. Comply with the one in force.
This AD applies to The Boeing Company 747-100 Series, 747-100B Series, 747-100B SUD Series, 747-200B Series, 747-200C Series, 747-200F Series, 747-300 Series, 747-400 Series, 747-400D Series, 747-400F Series, 747SP Series, 747SR Series.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes, that requires inspections to detect cracking in certain fuselage upper deck tension ties, and repair or modification of any cracked tension ties. This amendment is prompted by reports of fatigue cracking in tension ties. The actions specified by this AD are intended to prevent failure of two or more tension ties and the resultant rapid decompression of the airplane.
