AD 61-15-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directives; FAIRCHILD Model F-27, including FH-227 Aircraft |
Unsafe Condition
Failure of the wing flap gimbal nuts in the wing flap actuating screwjacks can render the gimbal nuts unsafe for further use due to thread extrusion or roll.
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Required Actions
Inspect flaps for proper rigging and check for radial or linear play between screwjack and gimbal nut. Lubricate gimbal nuts, screwjacks, universal joints, and bushings with specified lubricants. Replace gimbal nuts if play exceeds specified limits or thread damage is found. Conduct visual inspections for thread extrusion or roll at specified intervals.
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Compliance Time
Compliance required as indicated.
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Affected Aircraft
Fairchild Model F-27, including FH-227 aircraft, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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