59-25-06 MOONEY: Applies to M-20A Aircraft Serial Numbers 1201 Through 1500.
Compliance required not later than December 30, 1959.
In order to minimize the possibility of icing of the induction system alternate air source, relocate the carburetor alternate air source to a more sheltered location and omit the screen covering this opening.
(a) Remove the engine side cowls and the landing light.
(b) Disconnect air hose P/N 6064-19 from present alternate air inlet. Remove screen and air inlet and patch hole.
(c) Cut hole in landing light housing in the upper inboard quadrant to match hose connecting assembly P/N 6354.
(d) Position P/N 6354 inlet on outer side of light housing to match hole cut per item (c). Self-locking nuts and bolts should be used to attach P/N 6354 to landing light housing, in lieu of Tinnerman fasteners furnished with kit.
(e) Attach hose P/N 6064-19 to P/N 6354 with existing clamp and reinstall light and cowling.
(Mooney Service Letter 20-50covers this same alteration.)