AD 76-22-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dassault Aviation | Fan Jet Falcon | Airworthiness Directives; AVIONS MARCEL DASSAULT (AMD) Model Fan Jet Falcon (Falcon 20) Airplanes |
Unsafe Condition
Failure of main landing gear down-locks due to corrosion in Messier/Hispano Main Landing Gear Actuating Cylinders P/N A23721 (L.H.) and A23722 (R.H.) with specified serial numbers not modified per AMD Service Bulletin No. 529.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect actuating cylinders for corrosion per Messier Hispano Technical Instruction DME361-5 or equivalent. Replace corroded parts or modify per AMD SB No. 529 if corrosion is 'very corroded'. Discontinue inspections after modification per SB No. 529.
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Compliance Time
Within the next 50 hours time in service or three months, whichever occurs first, after the effective date of this AD, unless already accomplished within the preceding three months. For S/N 700+, within the next 200 hours time in service or four months, whichever occurs first, after the effective date of this AD, unless already accomplished within the preceding two months. Thereafter at intervals not to exceed six months.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AVIONS MARCEL DASSAULT (AMD) Model Fan Jet Falcon (Falcon 20) airplanes, all series, with Messier/Hispano Main Landing Gear Actuating Cylinders P/N A23721 (L.H.) and A23722 (R.H.) serial numbers 1 through 807, 809 through 813, 816, 818, and 820 not modified per AMD SB No. 529.
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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