Cessna has instructed its Citation factory service centers not to complete phase inspections on Citations that have aftermarket Perkins Aircraft Services windshields installed. A July 16 memo from Cessna’s manager of service center administration acknowledged that the less expensive windshields have FAA PMA approval, but indicated that Cessna Engineering “has been unable to obtain satisfactory test data indicating that these windshields meet the requirements and specifications for Cessna approval.”
Cessna is not specifically asserting that the PMA windshields are unairworthy (an STC is not even needed). But rather the manufacturer has instructed its service centers that “if a required phase inspection or Chapter 4 task includes item codes/ tasks applicable to a previously installed Perkins windshield, Cessna Citation Service Centers may not sign off that phase inspection or Chapter 4 task as complete, and the aircraft cannot be approved for return to service. The MTR/maintenance log entry should read as follows, ‘I certify that this aircraft has been inspected in accordance with a ________ field inspection except for item code XXXXXXX/Task xx-xx-xxx and a list of incomplete item codes/tasks, discrepancies and unairworthy items dated _______ has been provided for the aircraft owner or operator.’ Please ensure all hands adhere to this directive.”
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