AD 70-15-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2A | Airworthiness Directives; Hawker Siddeley Model DH.114 "Heron" Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2DA | Airworthiness Directives; Hawker Siddeley Model DH.114 "Heron" Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2X | Airworthiness Directives; Hawker Siddeley Model DH.114 "Heron" Series Airplanes |
Unsafe Condition
Drilled holes or attempted drilled holes for cotter pin installation located outside the specified limits on the flap datum hinge link bearing housing recess could lead to failure of the flap datum hinge assembly, compromising wing flap operation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect right and left wing flap datum hinge links for improperly located drilled holes; replace non-compliant links with pre- or post-modification 837 standards. Install special washers (P/N 4WF 465 or equivalent) on flap datum hinge bolts. Inspect ball race housing flanges to ensure correct cotter pin diameter (1/16 or 1/8 inch) based on modification standard.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 hours' time in service after the effective date of this AD
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Affected Aircraft
de Havilland Aircraft Co., Ltd.'s D.H.114 Heron Series 2A, 2DA, and 2X airplanes
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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