AD 65-13-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; Fairchild Model F-27 Series Aircraft |
Unsafe Condition
The flap asymmetry system's old asymmetric switches (P/N 472-001-1 and -2) may fail, leading to potential flap asymmetry during operation.
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Required Actions
Remove old asymmetric switches P/N 472-001-1 and -2, rework outboard flap and asymmetric switches with teleflex units per Fairchild Service Bulletin 27-26, install asymmetric override toggle switch at cockpit pedestal, and rewire aircraft for new asymmetry switches and override switch.
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Compliance Time
within the next 500 hours' time in service after the effective date of this AD, unless already accomplished
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Affected Aircraft
Maryland Air Industries, Inc. Model F-27 Aircraft Serial Numbers 1 to 39 inclusive, 41 to 45 inclusive, and 47
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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