Mon, Jan 21, 2013
AD NUMBER: 2012-26-04
PRODUCT: Certain Boeing Model 757-200, -200PF, and -200CB series airplanes powered by Rolls-Royce engines.
SUBJECT: Airworthiness Directive 2012-26-04
ACTION: Final Rule
SUMMARY: The FAA is superseding an existing airworthiness directive (AD) for the products listed above. That AD currently requires repetitive inspections of the shim installation between the drag brace fitting vertical flange and bulkhead, and repair if necessary; for certain airplanes, an inspection for cracking of the four critical fastener holes in the horizontal flange, and repair if necessary; and, for airplanes without conclusive records of previous inspections, performing the existing actions.
This new AD reduces the repetitive inspection interval; adds repetitive detailed inspections for cracking of the bulkhead, and repair if necessary; allows an extension of the repetitive intervals for certain airplanes by also doing repetitive ultrasonic inspections for cracking of the bulkhead, and repair if necessary; and provides an option for a high frequency eddy current inspection for cracking of the critical fastener holes, and repair if necessary. This action also adds a terminating action for certain repetitive inspections.
This AD was prompted by reports of loose fasteners and cracks at the joint common to the aft torque bulkhead and strut-to-diagonal brace fitting, and one report of such damage occurring less than 3,000 flight cycles after the last inspection. The FAA is issuing this AD to detect and correct cracks, loose and broken bolts, and shim migration in the joint between the aft torque bulkhead and the strut-to-diagonal brace fitting, which could result in damage to the strut and consequent separation of the strut and engine from the airplane.
DATES: This AD is effective February 22, 2013.
FMI: AD
More News
Have A Story That NEEDS To Be Featured On Aero-News? Here’s How To Submit A Story To Our Team Some of the greatest new stories ANN has ever covered have been submitted by our>[...]
“The legislation now includes a task force with industry representation ensuring that we have a seat at the table and our voice will be heard as conversations about the futur>[...]
Aero Linx: Waco Museum The WACO Historical Society, in addition to preserving aviation's past, is also dedicated and actively works to nurture aviation's future through its Learnin>[...]
Adcock Range National low-frequency radio navigation system (c.1930-c.1950) replaced by an omnirange (VOR) system. It consisted of four segmented quadrants broadcasting Morse Code >[...]
Also: uAvionix AV-Link, Does Simming Make Better Pilots?, World Games, AMA National Fun Fly Czech sportplane manufacturer Direct Fly has finished delivering its 200th ALTO NG, the >[...]