Airworthiness Directive · Amendment 39-21191 · Landing gear
Pacific Aerospace Limited Airplanes
This AD applies to Pacific Aerospace Limited Model 750XL airplanes, serial numbers (S/Ns) up to and including 216, 220, 8001, and 8002, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as nose landing gear (NLG) and main landing gear (MLG) attachment bolts without dual retaining devices. The FAA is issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, comply with this AD within 20 hours time-in-service after September 8, 2020 (the effective date of this AD) or within 30 days after September 8, 2020 (the effective date of this AD), whichever occurs first.
(1) Replace each NLG upper and lower attachment lock nut and Palnut with castellated nyloc locking nuts and spring/split pins by following steps 6 and 8 in Part B-Accomplishment Instructions (Nose Landing Gear) of Pacific Aerospace Mandatory Service Bulletin PACSB/XL/105, Issue 4, dated December 19, 2018 (PACSB/XL/105, Issue 4).
(2) For airplanes with a S/N up to and including 185, except S/N 177 and except airplanes with modification PAC/XL/0448: inspect the upper and lower attachment bolts on both MLGs for the installation of Palnuts (four on each MLG) as depicted in figure 6 in Part C—Accomplishment Instructions (Main Landing Gear) of PACSB/XL/105, Issue 4.
(i) If Palnuts are installed in all eight locations (four on each MLG), no further action is required.
(ii) If a Palnut is not installed on an MLG attachment bolt, before further flight, check the torque of the attachment bolt and install a Palnut by following steps 5 through 7 in Part C-Accomplishment Instructions (Main Landing Gear) of PACSB/XL/105, Issue 4.
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.
Aircraft
