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

Piper Service Bulletin No. 46


  • Piper J-3F-50, J-3L-50, J-3L-55 serial numbers 2355 thru 4279
  • Piper J-4, J-4A, J-4B and J-4D serial numbers 4-400 thru 4-828

System: Fuel

Issue Date: February 19, 1946

Subject: Strainer Attachment Fittings

Summary: Failure of strainer/carburetor attaching fittings which may be attributed metal fatigue.

Open PDF: PIP_SB46.pdf