Airworthiness Directive · Amendment 39-15161 · Wings
Pacific Aerospace Corporation, Ltd. Model 750XL Airplanes
This AD applies to Model 750XL airplanes, serial numbers 101, 102, and 104 through 128, certificated in any category.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions in accordance with Pacific Aerospace Limited Mandatory Service Bulletin PACSB/XL/022, dated February 14, 2007:
(1) Within 50 hours time-in-service (TIS) after September 25, 2007 (the effective date of this AD), and thereafter at intervals not to exceed 150 hours TIS until the blind rivets have been replaced by bolts or rivets as required in paragraph (f)(3) of this AD, inspect the inboard end of the rear spar for security of the blind rivets, which attach the fuselage attach fitting to the rear spar and inboard rib; inspect the radii of the rear spar upper and lower flanges for cracking; and inspect the aft flange of the inboard rib for cracking.
(2) Before further flight, after any inspection where cracking is found, repair the aft flange of the inboard rib and/or replace the rear spar.
(3) Within the next 12 months after September 25, 2007 (the effective date of this AD) or within the next 300 hours TIS after September 25, 2007 (the effective date of this AD), whichever occurs first, replace the blind rivets (part number NAS1738E-6-6) that join the rear spar and the aft end of the inboard rib with bolts or rivets.
(4) After the modification required in paragraph (f)(3) of this AD, repetitively inspect the main wing aft attachment area at intervals not to exceed 12 months or 300 hours TIS, whichever occurs first. If any cracks are found, prior to further flight, repair the main wing aft attachment area.
Note: This AD differs from the MCAI and/or service information as follows: No differences.
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
