Piper J-3

SB-01 Piper J-2/J-3 Rigging Procedure

04/11/2022Univair
Piper Service Bulletin No. 1 Applicability: Piper E-2, J-2, J-3 System: Rigging Issue Date: February 15, 1946 Subject : How to Rig Cub E-2, J-2, J-3 Airplanes Summary: Instructions for rigging Piper Cub E-2, J-2, and J-3 airplane...

SB-18 Piper J-2/J-3 Replacement of Tailbrace Wire Nipples

04/11/2022Univair
Piper  Service Bulletin No. 18 Applicability:   J-2 Cub serial numbers 1500 to 1999 J-3 Cub serial numbers 2000 to 2609 System: Control Issue Date: February 18, 1946 Subject : Replacement of Tailbrace Wire Nipples Summar...

SB-21 Piper J-3C Engine Mounting Bolt Failures

09/17/2021Univair
Failure of the bolts which attach the Continental A50 engine to the engine mount.

SB-35 Piper J-3 Reinforcement of Windshield Attachment

09/17/2021Univair
Breakage has occurred in the welded joint at the intersection of the steel channels, to which the right rear edge of the windshield attaches.

SB-36 Piper J-3 Inspection of Motor Mount

09/17/2021Univair
Inspection of motor mount for cracks in the tubing near the welds, especially in the member from the top firewall bulkhead to the rear engine mounting bosses.

SB-40 Piper J-3 Outlet Reinforcement on 12 Gallon Fuel Tanks

09/17/2021Univair
Installation of a reinforcing patch around the fuel outlet fitting of the fuel tank.

SB-42 Piper J-3/J-5 Elevator Bungee Installation

09/17/2021Univair
Immediate changes necessary in the bungee installation.

SB-43 Piper J-3/J-5 Stabilizer Link Tube and Rear Support Bearing Bracket

09/17/2021Univair
Reports of binding in the stabilizer rear support bearing and, as the link tube at the adjustment yoke is of similar construction, there is a possibility that the same difficulty may occur there.

SB-44 Piper J-3 Operation of Airplanes with Enclosure Door Open

09/17/2021Univair
Possibility that the upper enclosure door may be torn from the airplane and cause damage to other parts of the airplane when flying with the door open.

SB-45 Piper J-3 Control System Interference

09/17/2021Univair
Interference of the torque tube with the front seat canvas and of the elevator bellcrank with the rear seat canvas.

SB-46 Piper J-3/J-4 Strainer Attachment Fittings

09/17/2021Univair
Failure of strainer/carburetor attaching fittings which may be attributed metal fatigue.

SB-47 Piper J-2/J-3 Preparation for Winter Operation

04/11/2022Univair
Piper  Service Bulletin No. 47 Applicability: Piper E-2, J-2, and J-3 System: Operations Issue Date: February 19, 1946 Subject : Preparation for Winter Operation Summary: There are several items of equipment in the engine ...

SB-49 Piper J-3/J-5 Revised Washer for Fin Brace Rod Clevis

09/17/2021Univair
Inspecting tail brace rod clevises attached to the fin for cracks and replacing wherever necessary.

SB-50 Piper J-2 thru J-5 Ribstitching

04/11/2022Univair
Piper  Service Bulletin No. 50 Applicability: Piper E-2, J-2, J-3, J-4 and J-5 System: Finishing Issue Date: February 19, 1946 Subject : Ribstitching Summary: Reported failures of the ribstitching both in the wing and cont...

SB-53 Piper J-3/J-5 Fuel Shut-Off Swivel Fitting

09/17/2021Univair
Failure of the fuel shut-off control attachment at the swivel fitting.

SB-61 Piper Aging of Protective Finish on Wood Wing Spars

09/16/2021Univair
A noticeable aging of the spar finish occurs in listed airplane models that are continually exposed to adverse atmospheric conditions.

SB-63 Piper J-3/J-5 Stabilizer Aluminum Yoke Casting

09/17/2021Univair
Inspection of the stabilizer aluminum yoke casting, and if any cracks are apparent, the part should be replaced before further operation of the airplane.

SB-66 Piper Flexible Hose End Fittings (3/8" Synthetic)

09/17/2021Univair
Testing for secure attachment of flexible hose end fittings.

SB-68 Piper J-3/J-5 Stabilizer Rear Bearing Bracket

09/17/2021Univair
Failure of the stabilizer rear bearing bracket as a result of improper or insufficient lubrication.

SB-71 Piper J-3/J-4/J-5 Exhaust Muffler Inspection and Repair

09/17/2021Univair
Inspecting for cracks at or near the weld beads at the attachment of the muffler outer shell to the end plates.