Piper Service Letter No. 189
Applicability: Piper PA-18A serial numbers up to 18-1327
System: Landing Gear
Issue Date: April 17, 1952
Subject: Tailwheel Springs
Summary: Addition of one long spring leaf, part number 12567-04, to prevent anticipated damage to the rudder while operating with heavy loads in rough terrain.
Open PDF: PIP_SL189.pdf