AD 67-08-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directive; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
Unsafe Condition
Cracks in the elevator torque tube P/N 27-223002-3 between Elevator Stations 11.811 and 15.748 and in the supporting rings P/N 27-223006-9 and P/N 27-223006-3 could lead to structural failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours' time in service after the effective date, visually inspect the elevator torque tube and adjacent structure for cracks using a mirror and light or approved equivalent. Within 75 hours' time in service, inspect the torque tube and supporting rings via X-ray, dye-penetrant with 10-power glass, or approved equivalent. Replace any cracked parts with inspected parts of the same part number or approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours' time in service after the effective date of this AD
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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