AD 71-17-08

71-17-08 CESSNA: Amdt. 39-1273. Applies to Model 337 Airplanes.

Compliance. To minimize the possible adverse affects of undetected rear engine stoppage during take-off, within the next 10 hours' time in service after the effective date of this AD, the following modifications must be accomplished and the following operational procedures will be applicable:

A) Readjust the rear engine idle RPM from 575-625 to 625-675 and readjust idle mixture accordingly.

B) Taxi primarily by use of the rear engine.

C) Initiate all take-offs by advancing the throttle on the rear engine to a point where the normal functioning of the rear engine has been established before advancing the throttle of the front engine.

D) Install a permanent placard to the right of the tachometer instrument to read as follows:

TAXI AND TAKE-OFF LEAD WITH REAR ENGINE POWER CHECK RPM AND FUEL FLOW

NOTE: The operator may make and install a temporary placard using minimum 1/8 inch highletters until the permanent placard is obtained from the manufacturer and properly installed.

Cessna Service Letter ME 71-21 refers to the subject matter of this AD.

This amendment becomes effective August 24, 1971.