AD 72-08-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2A | Airworthiness Directives; Hawker Siddeley Aviation Model DH-114 Heron Series 2 Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2DA | Airworthiness Directives; Hawker Siddeley Aviation Model DH-114 Heron Series 2 Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2X | Airworthiness Directives; Hawker Siddeley Aviation Model DH-114 Heron Series 2 Airplanes |
Unsafe Condition
Failures of the main undercarriage main and damper jack attachment bolts, part numbers 14-2U.229 and 14-2U.631, due to cracks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the main and damper jack attachment bolts for cracks by removing and visually inspecting them. For P/N 14-2U.229 bolts, inspect within 150 hours' time in service after the effective date and every 300 hours thereafter. For P/N 14-2U.631 bolts, inspect within 1,200 hours' time in service after the effective date and every 2,400 hours thereafter. Replace any cracked bolts with serviceable bolts of the same part number or P/N 14-2U.631 as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 150 hours' time in service after the effective date of this AD, unless already accomplished within the last 150 hours' time in service, and thereafter at intervals not to exceed 300 hours' time in service from the last inspection (for P/N 14-2U.229) or within the next 1,200 hours' time in service after the effective date and thereafter at intervals not to exceed 2,400 hours' time in service (for P/N 14-2U.631)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hawker Siddeley Aviation Model DH-114 Heron Series 2 airplanes with main undercarriage units having part numbers 14-2U.229 or 14-2U.631 main and damper jack attachment bolts.
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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