Piper - 88731-704 - KIT: SPAR Assembly-REIN - RH

P/N: 88731-704

Product Code: AFP745F

Certificate Type: FAA 8130-3

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P/N 88731-704

Product Code AFP745F

Product Category Airframe Parts

Certificate Type FAA 8130-3

Country of Manufacture United States

Delivery Please add to cart for availability. If no stock delivery term is usually 3-4 weeks.

Importer for Serbia Grappolo Aviation Supply Co. Ltd

Manufacturer Piper Aircraft

The 88731-704 is a Piper OEM structural modification kit used for right-hand (RH) wing main spar reinforcement. It is part of a service bulletin-driven structural upgrade program (commonly associated with SB 1372 series) addressing inspection and reinforcement of the wing spar structure in certain Piper aircraft models.

This kit is installed on the right wing main spar assembly and is designed to restore or improve structural integrity in response to fatigue findings, inspection results, or service bulletin compliance requirements. It typically includes reinforcement components that are added to the existing spar structure, along with installation hardware such as bolts, washers, and nuts as specified by the Piper Illustrated Parts Catalog (IPC).

In aircraft maintenance practice, spar reinforcement kits like the 88731-704 are considered highly critical structural modifications, since the wing spar is a primary load-bearing component responsible for transferring aerodynamic forces from the wings into the fuselage. Any reinforcement work must be performed strictly according to Piper service instructions and approved maintenance procedures.

This kit is not a simple replacement part, but a structural upgrade assembly, and its installation is typically performed during heavy maintenance, structural inspection compliance events, or mandated service bulletin embodiment.

Key features include:

Piper 88731-704 RH wing spar assembly reinforcement kit
Installed on right-hand main wing spar structure
Used for structural reinforcement under service bulletin compliance (SB 1372 series)
Includes reinforcement components and associated installation hardware
Addresses fatigue or inspection-driven structural requirements
Critical primary structure modification (wing load path integrity)
Must be installed per Piper-approved maintenance documentation
Referenced alongside LH counterpart kit 88731-701
Used in specific Piper PA-series aircraft as defined by applicability data
Requires certified maintenance personnel and controlled structural inspection procedures