AD 71-20-02
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 Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2DA | Airworthiness Directives; Hawker Siddeley Model DH-114 Heron Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H.114 Heron Series 2X | Airworthiness Directives; Hawker Siddeley Model DH-114 Heron Airplanes |
Unsafe Condition
Failure of the emergency escape hatch lock mechanisms to open from outside the airplane could prevent rapid egress during an emergency.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Check operation of each escape hatch lock mechanism by turning the external handle with the internal handle stowed. Secure inoperable lock mechanisms to the escape hatch per Hawker Siddeley Technical News Sheet F.16 or FAA-approved equivalent. Complete securing of all lock mechanisms within 100 hours' time in service after the AD's effective date.
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Compliance Time
within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
Hawker Siddeley Model DH-114 Heron Series 2A, 2DA, and 2X airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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