09/01/2021Univair
Prevention of possible failure of the engine mount.
09/01/2021Univair
How to determine if the lower longerons are made from 1025 steel or the approved 4130 steel. To be accomplished before further flight.
08/31/2021Univair
Inspection of the engine exhaust muffler and shroud assembly, carburetor heat shroud and air duct, support braces, clamps and brackets, exhaust stacks and manifolds.
09/01/2021Univair
To forestall the possibility of engine fuel starvation during takeoff operations, install a placard on the right fuel quantity gauge.
09/01/2021Univair
Inspect to prevent further failures of engine exhaust system components.
09/01/2021Univair
Steps to prevent loss of the elevator control system as a result of worn clevis bolts.
09/01/2021Univair
How to correct air leaks, which permit entrance of engine fumes into the cockpit, in the area of the fuselage right main landing gear fittings.
09/01/2021Univair
Inspection, cleaning and replacement of upper bearing in the oleo strut.
09/01/2021Univair
Steps to preclude weld separations on the end of the landing gear shock strut assembly.
09/01/2021Univair
Replace the aluminum front spar wing-to-fuselage attachment fittings with steel forgings.
09/01/2021Univair
Steps to preclude failure of the rudder cable attachment fitting lug at the weld on rudder pedals.
09/01/2021Univair
Steps to preclude loss of control of the airplane as a result of failed nicopress sleeves in the control system.
09/01/2021Univair
Several accidents have occurred involving engine fuel starvation attributed to a lack of detent action in the fuel selector valve.
09/01/2021Univair
Installation of safety belt extension on the front seat belt to eliminate deterioration due to rear seat heater damage and chafing.
08/31/2021Univair
Steps to prevent the possibility of a catastrophic accident in the event of tail brace wire failure.
09/01/2021Univair
Reworking the vents in fuel tank caps to comply with AD 56-26-02.
09/01/2021Univair
Short circuit caused by a faulty cigar lighter element possibly resulting in blowing of the master fuses.
08/31/2021Univair
Inspection of aileron hinge reinforcing brackets to determine the type of material. All aluminum brackets are to be removed and replaced with steel brackets.
08/31/2021Univair
Inspection and reworking the turnbuckles to preclude the possibility of fork end failures in the control system.
09/01/2021Univair
Eliminate combustible material and possible ignition sources from the area aft of the firewall, underneath the forward cabin floor, to preclude possibility of inflight fires.