74-23-07 CESSNA: Amendment 39-2010. Applies to Cessna Model A188B (Serial Numbers 18801375 through 18801824, including those serial numbers with suffix "T") airplanes.
Compliance: Required as indicated, unless already accomplished.
To preclude induction air inlet duct collapse and resulting in engine power loss within the next 25 hours' time in service after the effective date of this AD, accomplish the following:
Replace the existing induction air inlet duct with Cessna P/N 1650044-1 bellows type induction air inlet duct or equivalent, in accordance with Cessna Service Letter No. SE 74-23, dated October 4, 1974, or later approved revisions.
Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
This amendment becomes effective November 15, 1974.