MTD-06-2024 Issue 3 –

Pietenpol Air Camper Wing Strut Internal Corrosion

Issue 1 of this MTD, issued in 2024, required inspection of the rear 'Jim Wills' type struts for corrosion, replacement of any corroded struts, and the drilling of a single drain hole in the end cap of each strut.

MTD-06-2024 Issue 2 superseded Issue 1 and introduced revised drain hole requirements based on feedback from the field. Aircraft fitted with Jim Wills rear wing struts must have the struts inspected for internal and external corrosion.

Issue 3 is being issued to properly reflect the requirements for Air Campers using the Paul Prince metal framed fuselage option and the fact that the outboard ends of the Wills struts are non-adjustable, as well as to clarify that the rod-end’s locknut is not shown in Figure 4.

For aircraft that have not already complied with Issue 1 or Issue 2 of this MTD, Issue 3 of this MTD must be embodied ‘Before next flight,’ after the publication of this MTD at Issue 3.

For wooden-fuselaged aircraft that have already had their rear struts inspected and single drain holes drilled in accordance with Issue 1 of this MTD, the second drain hole and optional third borescope hole must be drilled in each rear strut and other actions carried out in accordance with Issue 2 or Issue 3 of this MTD before the end of 2027.

For Paul Prince metal-fuselaged aircraft, both front and rear struts must be inspected and drain holes drilled in accordance with Issue 3 of this MTD not later than 90 days after the effective date of this MTD Issue 3.

Please refer to the MTD-06-2024 Issue 3 document for full applicability, aircraft identification guidance, and compliance requirements.

This MTD can be found HERE and is also available below.