48-13-03 PIPER: Applies to PA-12 Airplanes With Battery Holddown of Metal Bracket With Fiber Insulation at Its End.
Compliance required by October 1, 1948.
To eliminate battery short circuits caused by defective battery holddown brackets, replace brackets by wood blocks, Piper P/N 84682-3 and 84682-9 or equivalent. (Piper Service Bulletin No. 105 dated February 18, 1948, covers this same subject.)