47-10-18 LOCKHEED: (Was Mandatory Note 20 of AD-763-3.) Applies to All Model 49-46 Aircraft.
Compliance required not later than 100 hours of operation after March 1, 1947, or during conversion of Model 49-51 aircraft to Model 49-46 aircraft, whichever occurs first.
The hose connections in the fuel line between air metering chamber and fuel injection pump shall be changed to incorporate fire resistant hose and double hose clamps, using Wright Aeronautical Corporation P/N 856864 and 855403.