Information on converting a Model 415-CD to a Model D or E; and Model 415-C to Model D or E.
Required operation limitations for 75HP model 415-C, per supplement No. 6 of FAA No. 43 dated August 15, 1942.
Cruise control tables for Ercoupe models 415-C, CD, and G for inclusion in FAA approved Airplane Flight Manuals.
Bolts 415-34330 are made of case hardened, SAE 1113 steel, and a few of them purchased from an outside source have been found to be too brittle. Immediate replacement with standard AN 5-26 bolts is strongly recommended.
Steps to increase the strength of the rudder at the control horn attachment.
The re-routing of the oil breather line will empty oil vapors almost directly to the outside of the airplane, helping to eliminate an excessively dirty engine compartment.
Provisions for expelling water and gasoline from the forward belly regions of the aircraft for all normal parking attitudes.
Installation of Forney Modification Kit #29 to provide effective drainage of the fuselage tank and wing tanks by the use of quick drain fixtures.
Load testing a defective part (number 415-52129 Shaft Assembly Control Column) in the aileron control system.
The battery box drain tube on the affected airplanes may in some cases be insufficiently long to protrude 1/2 inch below the belly skin of the airplane.
The tube clamps used to secure the muffler to the exhaust stacks have not been providing satisfactory service in that they permit the muffler to loosen and move around.
Changes have been effected to prevent further failures in the elevator trim unit handle crank shaft and worm wheel shaft.
Replacing aluminum alloy fitting AN914-2D, which is located between the fuel filter and the carburetor, with copper alloy fitting AN914-2.
Steps to provide a more positive locking action on the aileron control stop.
Supplement to Ercoupe Service Bulletin No. 13 Change of Aileron Control Stop.
Eliminating the possibilities of a rudder bellcrank seizure caused by the bakelite bushing that has expanded due to moisture within the bushing.
Means of preventing the hinge pins from vibrating loose and moving forward into the propeller.
Procedure for replacing the fuselage gas tank overflow line due to the imperial brass compression sleeve having necked the line causing it to fail.
Procedures for replacing Magnesium Die Case Nose Wheel with a Permanent Mold Aluminum Alloy Nose Wheel.
It has been found necessary to provide a positive lock on the zipper at the bottom of the baggage compartment to eliminate the possibility of it opening while in flight, and having articles fall into the controls.