Issued April 3, 2024, Service Bulletin (SB) 1372 supersedes SB 1345 and SB 1345A, except for requirements of SB 1345 that are mandated by an FAA-issued Airworthiness Directive. Aircraft that were previously made compliant with SB 1345 or SB 1345A must comply with SB 1372.
SB 1372 supersedes SB 886 and SB 978A for all aircraft models affected except for the following: PA-28-140, PA-28-150, PA-28-160, and PA-28-180. Aircraft that were previously made compliant with SB 886 or SB 978A must comply with SB 1372. In addition, various Piper Airplane Maintenance Manuals (AMM) and Service Manuals (SM) have incorporated the recurring inspections from SB 886 and/or SB 978A, titled as ‘Wing Spar Inspection’ or similar. SB 1372 supersedes these inspections and aircraft that were previously made compliant with this inspection must comply with SB 1372.
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