AD 72-12-05
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 main or nose landing gear operating jacks due to the use of piston P/N AHO 19742 without Modification 1161.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the affected operating jack assembly with a modified jack assembly incorporating piston P/N ACO 23389 (Modification 1161) or replace the piston P/N AHO 19742 with a new piston of the same part number and continue replacing them at intervals not exceeding 5,000 landings. Operators without landing records must use total airplane landings as a substitute.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 landings after the effective date of this AD, or before accumulating a total of 5,000 landings on a piston P/N AHO 19742 in an operating jack assembly, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hawker Siddeley de Havilland Model DH-114 Heron Series 2A, 2DA, 2X airplanes without Modification 1161 on all main and nose landing gear operating jacks.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.