AD 59-23-03
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 present cartridge unit in the fire extinguisher system has been found to be unreliable above 20,000 feet.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove four Fenwal fire extinguisher cartridge units, P/N 690202-2, and replace with new Fenwal fire extinguisher cartridge units, P/N 6900202-3.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than December 1, 1959
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Affected Aircraft
Fairchild Model F-27 Series aircraft Serial Numbers 1 to 63 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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