AD 75-17-16 states in paragraph C).
"At each annual, progressive, or 100-hour inspection as required by Federal Aviation Regulation 91.169, on Models covered by paragraphs A and B and all subsequent serials of those same models, inspect the alternate air valve for cracks."
NOTICE it says "and all subsequent serials of those same models"
So it applies to my 8KCAB 190-75 even though I installed a new complete airbox in 2002,
correct?
AND it applies to all new and future 8KCAB aircraft, correct?
SL 439 explains the inspection, but I don't understand how an AD can apply to aircraft that are not even built yet. And apply to aircraft that have replaced the airbox or complied with SL439.
Thanks, Bill B
Thank you for the explanation, appreciated.
Hope someone some day has time to get SL 439 compliance approved as an AMOC. It's irritating to sign
this off every year, and must be also for the factory to sign off an AD in each new log book.