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AC 35.37-1A

Historical
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Advisory circular · Guidance Material for Fatigue Limit Tests and Composite Blade Fatigue Substantiation

A newer version is currentThis is a historical version. AC 35.37-1B is the version in force, approved March 24, 2011.
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Approved
September 17, 2001
Last reviewed
September 21, 2001
Cancels
AC35.37-1 CHG 1
Cancelled by
AC35.37-1B
Family
AC 35.37-1 · 4 versions
Revision
A
14 CFR parts
35

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

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Show pages 13–24
Page 25Open in PDF

FIGURE 7 Propeller Shaft Adapter Hub Mounting Base Stub Blade Centrifugal Load Vibratory Bending Load Steady Bending Load 3 24 1

HUB AND BLADE RETENTION TEST RIG Notes:

Loads are applied to each blade stub Vibratory bending is simple harmonic loading and 90 degrees out of phase from blade stub to blade stub Steady bending is maintained at all times Centrifugal loading is maintained at all times