Cessna 120, 140 and 170 Series

ADs for Type Certificates A-768, A-799 and 5A2

AD 2004-19-01 Upper Shoulder Harness Adjusters

08/30/2021Univair
Inspect and, if necessary, modify the pilot/co-pilot upper shoulder harness adjusters that have certain Cessna accessory kits incorporated.

AD 99-27-02 Fuel Selector Valves

08/31/2021Univair
Replacing certain fuel selector valve cams or fuel selector valves that Cessna shipped from December 6, 1998, through May 10, 1999.

AD 82-07-02 Engine Crankcase Breather

08/31/2021Univair
Steps to prevent the possible loss of elevator trim control.

AD 79-10-14 R1 Fuel Tank Venting

08/31/2021Univair
Instructions to provide an alternate source of fuel tank venting in case of fuel tank vent obstruction by foreign material and/or sticking of the fuel vent valve.

AD 79-08-03 Electrical System Failure

08/30/2021Univair
How to prevent an inflight electrical system failure, smoke in the cockpit, and/or fire in the wire bundle behind the instrument panel.

AD 74-06-02 Defective AVCON Mufflers

08/31/2021Univair
Instructions to prevent possible leakage of carbon monoxide into the cabin heater system in airplanes utilizing Avcon Industries, Inc., kits with defective mufflers.

AD 73-17-01 Fuel Transfer Pump Placard

08/31/2021Univair
To advise the pilot concerning proper fuel transfer pump operation, install Javelin Placard 782-14 or an equivalent FAA-approved placard, adjacent to the fuel transfer pump switch.

AD 69-15-03 Cracks in Muffler Assembly

08/31/2021Univair
How to detect cracks in the muffler assembly in Cessna model airplanes incorporating Piper Muffler Assembly P/N 10308-00 with the installation of a Lycoming engine.

AD 62-24-03 Cabin Heat System

08/30/2021Univair
Failures of the exhaust stacks have occurred in the area of the cabin heat muffs, causing hazardous carbon monoxide contamination of the cabin when cabin heat is used.

AD 61-25-01 Unsafe Condition in Main Gear

08/30/2021Univair
Steps to correct an unsafe condition in the main gear (Met-Co-Aire Tricycle Landing Gear).

AD 51-21-01 Inspection of Bottom Rib of Rudder

08/30/2021Univair
Inspection of bottom rib of rudder for kinks or cracks in the rib flanges just aft of the rudder horn fitting.

AD 50-31-01 Inspection of Fin Spar

08/30/2021Univair
How to remove the fin for spar inspection, and required replacement parts if failure exists.

AD 48-43-02 Continental C-145-2 Engines

08/31/2021Univair
Replacement of piston pin and plug assemblies to preclude the possibility of disintegration of the piston pin plugs, failure of pistons, and complete engine failure.

AD 48-25-03 Wing Drag Wire System

08/30/2021Univair
Inspect wing drag wire system for loose or broken drag wires and inspect ribs for damage.

AD 48-25-02 Inspection of Muffler Assemblies

08/30/2021Univair
Removal of carburetor air heater muff and cabin heater muff; inspection of the muffler assemblies for any evidence of cracks; modification of placard calling for inspection every 25 hours.

AD 48-07-01 Inspection of Horizontal Stabilizer Bolts

08/30/2021Univair
Inspect the two bolts attaching the horizontal stabilizer to the fin post for tightness and proper length.

AD 48-05-04 Operator Limitations Placard

08/30/2021Univair
Refers to the various Airplane Flight Manuals which are required equipment for landplane, skiplane, and seaplane, and must be carried in the aircraft at all times.

AD 47-50-02 Inspection of Rear Fuselage Bulkhead

08/30/2021Univair
Inspection of the lower right-hand corner of the cutout in the fuselage rear bulkhead for cracks.

AD 47-43-08 Propeller Blade Retainer Ferrule

08/30/2021Univair
Removing the R003-201 propeller blades and visually inspecting the propeller blade retainer ferrule for cracks.

AD 47-43-06 Inspection of Aileron Support Ribs

08/30/2021Univair
Inspect the aileron support ribs for indications of buckling or cracking.