AD 68-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directives; Fairchild-Hiller Model FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directives; Fairchild-Hiller Model FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directives; Fairchild-Hiller Model FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227D | Airworthiness Directives; Fairchild-Hiller Model FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227E | Airworthiness Directives; Fairchild-Hiller Model FH-227 Aircraft |
Unsafe Condition
Flutter of the elevator trim tab could lead to structural deformation, cracks, loose rivets, damaged bearings, or damaged parts in the elevator trim tab system, compromising flight safety.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect elevator trim tab for trailing edge free play not exceeding 0.100 inch; visually inspect hinge bearings, structure, clevis bolts, horn, actuator, rod assembly rivets, and hinges for damage or looseness; replace damaged bearings, loose rivets, deformed or cracked parts with inspected or approved parts; inspect tab spar area for cracks and repair or replace as needed; modify lower tab skin with a doubler and access holes for inspection; cover access holes with tape. Inspections must be done prior to further flight unless already within last 20 hours' time in service, with subsequent intervals not exceeding 25 or 600 hours' time in service depending on modification status.
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Compliance Time
Compliance required within the next 5 hours' time in service after the effective date of this AD unless already accomplished within the last 20 hours' time in service and thereafter at intervals not to exceed 25 hours' time in service from the last inspection. For modified tabs, comply with paragraphs (a), (b), (c), and (d) prior to accumulating 600 hours' time in service on the modified tab, and thereafter at intervals not to exceed 600 hours' time from the last inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Maryland Air Industries, Inc. FH-227, FH-227B, FH-227C, FH-227D, FH-227E aircraft models.
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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