nts for the entire alteratioNrepair. (DETAIL DESIGN AND STRUCTURAL APPROVAL ONLY) End of data. PURPOSE Of DATA In support of Form 337 Alteration. Oxygen Equipment Layout. Substantiate Deviations to STC ST02696AT-D. Aircraft SIN 5173 only. APPLICABLE REQUIREMENTS (List specific Seel ion!) 14CFR Part 25. Paragraphs 2