Airworthiness Directive · Amendment 39-15049 · Autopilot
Pacific Aerospace Limited Model 750XL Airplanes
This AD applies to Model 750XL airplanes, serial numbers 125, 126, and 127, 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 the 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 before further flight.
(1) Modify the autopilot pitch trim circuit with additional protective features following Pacific Aerospace Limited Mandatory Service Bulletin PACSB/XL/025, dated March 5, 2007.
(2) Inspect the Pitch Servo to confirm part number (P/N) 108-15-P1 is installed following Pacific Aerospace Limited Mandatory Service Bulletin PACSB/XL/025, dated March 5, 2007.
(i) If Pitch Servo P/N 108-15-P1 is installed, no further action is necessary.
(ii) If Pitch Servo P/N 108-15-P1 is not installed, replace the Pitch Servo with P/N 108-15-P1 following Pacific Aerospace Limited Mandatory Service Bulletin PACSB/XL/025, dated March 5, 2007.
Note: This AD differs from the MCAI and/or service information as follows: (1) The MCAI requires an interim action of disconnecting the autopilot following Pacific Aerospace Limited Alert Service Bulletin PACSB/XL/001, dated February 16, 2007. Since there are no products of this type currently registered in the United States, and Pacific Aerospace Limited Mandatory Service Bulletin PACSB/XL/025, dated March 5, 2007, supersedes Pacific Aerospace Limited Alert Service Bulletin PACSB/XL/001, dated February 16, 2007, we are not requiring disconnection of the autopilot. Instead we require the autopilot comply with the terminating actions in Pacific Aerospace Limited Mandatory Service Bulletin PACSB/XL/025, dated March 5, 2007. (2) The MCAI allows modification of the pitch trim circuit within 150 hours time-in-service. Since there are no products of this type currently registered in the United States, we are requiring modification of the pitch trim circuit before a domestic airworthiness certificate can be issued.
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
