AD 90-08-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directives; FAIRCHILD INDUSTRIES, INC. Model F-27 and FH-227 Series Airplanes |
Unsafe Condition
Reduced structural capability of the wing due to undetected fatigue cracks in the wing outer panel upper surface stringer splice fittings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a dye penetrant inspection for cracks in the wing outer panel upper surface stringer splice fittings within 25 hours time-in-service after August 21, 1989. If cracks are found, blend or replace fittings based on crack size: blend if ≤0.100 inch (F-27) or ≤0.075 inch (FH-227), replace with steel fittings if larger. Replace all aluminum fittings (P/N 27-133008-21) with steel fittings (P/N 27-133008-23) within one year time-in-service after this AD's effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours time-in-service after August 21, 1989 (the effective date of AD 89-15-01, Amendment 39-6292) for initial inspection; within one year time-in-service after the effective date of this AD for replacement of aluminum fittings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Model F-27 and FH-227 series airplanes, certificated in any category.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.