79-19-06 CESSNA AIRCRAFT COMPANY: Amendment 39-3558. Applies to Cessna Model 210L, Model T210L, Serial Numbers 21061040 and subsequent, Model 210M, Model T210M and Model P210N series airplanes modified to incorporate Symbolic Displays, Inc. fuel flow indicating system per STC SA3835WE.
Compliance required within 25 hours' time-in-service or thirty (30) days from the effective date of this AD, whichever occurs first, unless already accomplished.
To prevent a possible fuel leak caused by the installation of Symbolic Displays, Inc. fuel flow indicating system per STC SA3835WE accomplish the following:
(a) Inspect the fuel flow transducer installation on the upper left side of the engine near the fuel distributor manifold.
(b) If a 4 inch long flexible hose (Aeroquip P/N AE7010001E0040 or Stratoflex P/N 111D417-4S-0040) is installed between the transducer and the fuel distributor, no further action is required per this AD.
(c) If an NAS 424-4 coupling is installed between the fuel flow transducer and the fuel distributor, remove and replace the coupling with hose assembly Aeroquip Part Number AE7010001E0040 or hose assembly Part Number 111D417-4S-0040 (Stratoflex).
NOTE: Symbolic Displays, Inc. Service Information Bulletin No. 72 dated June 15, 1979 and Installation Diagram Drawing No. 204724, Revision "B," pertain to this matter.
(d) Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.
This amendment becomes effective September 17, 1979.