AD 82-22-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directives; Fairchild Republic Models F-27 and FH-227 Airplanes |
Unsafe Condition
Moisture separator assembly shell failure due to upper shell assemblies P/N 841665 or 841665-01 reaching three years or 20,000 cycles in service, or undetected cracks/corrosion from lack of annual fluorescent penetrant inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect moisture separator assemblies P/N 890469, 890469-01, 890469-02, 891572, or 891572-01 for upper shell assemblies P/N 841665 or 841665-01. Replace shell assemblies if in service beyond three years or 20,000 cycles. Perform annual fluorescent penetrant inspection per Walter Kidde Manual F-41024B for those with less than three years or 20,000 cycles. Inspect pre-September 1979 manufactured shells before service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to accumulating 100 landings or within 20 days, whichever occurs first, unless accomplished within the last 12 months.
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Affected Aircraft
Fairchild Republic Models F-27 (all variants) and FH-227 (all variants) airplanes certificated in all categories.
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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