Airworthiness Directive · Amendment 39-15498 · McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, and MD-10-10F Airplanes
McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, and MD-10-10F Airplanes
This AD applies to McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, and MD-10-10F airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin DC10-32A259, dated October 30, 2007.
We are adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, and MD-10-10F airplanes. This AD requires repetitive inspections for the presence of stray nickel or chrome plating deposits on the air filler valve bore of certain main landing gear (MLG) shock strut cylinders, and if necessary, related investigative and corrective actions. Doing the corrective action terminates the repetitive inspections. This AD results from a report of a left MLG collapse during landing rollout. We are issuing this AD to detect and correct stray nickel and chrome plating deposits, corrosion, and cracking of the air filler valve bore on the MLG cylinder, which could result in landing gear failure, significant damage to the airplane, and injury to personnel.
Comply with this AD within the compliance times specified, unless already done.
At the applicable time specified in paragraph (f)(1), (f)(2), or (f)(3) of this AD, do a video probe inspection for the presence of stray nickel or chrome plating deposits on the air filler valve bore of the MLG shock strut cylinders, and before further flight, do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin DC10-32A259, dated October 30, 2007. Repeat the video probe inspection thereafter at intervals not to exceed 2,400 flight cycles or 20 months, whichever occurs first. Accomplishment of the repair specified in Part 2 of the Accomplishment Instructions of the service bulletin or the replacement specified in Part 3 of the Accomplishment Instructions of the service bulletin terminates the repetitive inspections for that MLG shock strut cylinder.
(1) For passenger airplanes: Within 24 months after the effective date of this AD.
(2) For freighter airplanes with MLG cylinders that have accumulated fewer than 7,200 flight cycles in a freighter configuration as of the effective date of this AD: Within 24 months after the effective date of this AD.
(3) For freighter airplanes with MLG cylinders that have accumulated 7,200 flight cycles or more in a freighter configuration as of the effective date of this AD: Within 6 months after the effective date of this AD.
As of the effective date of this AD, no person may install a MLG shock strut cylinder assembly, part number ARG7002-1, -501, -503, or -505, on any airplane, unless the air filler valve bore hole has been oversized and closing action has been accomplished in accordance with Boeing Alert Service Bulletin DC10-32A259, dated October 30, 2007, and the MLG shock strut cylinder assembly has been permanently identified with part number SB10320259-3 adjacent to the existing ARG7002 part number.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
