Podcast
Questions and Answers
Which material was among the first used to construct aircraft?
Which material was among the first used to construct aircraft?
- Plywood
- Metal
- Fabric
- Wood (correct)
What were most of the airplanes built during World War One constructed of?
What were most of the airplanes built during World War One constructed of?
- Wood frames with fabric coverings (correct)
- Wood frames with metal coverings
- Metal frames with metal coverings
- Metal frames with fabric coverings
What was the material of choice for aircraft construction into the 1930s?
What was the material of choice for aircraft construction into the 1930s?
- Metal
- Plywood
- Wood (correct)
- Fabric
Which airplane company designed and developed the bomber named the Mosquito?
Which airplane company designed and developed the bomber named the Mosquito?
What were the airplanes made of that De Havilland produced during the late 1940s?
What were the airplanes made of that De Havilland produced during the late 1940s?
Which material did Howard Hughes use to construct the Spruce Goose aircraft?
Which material did Howard Hughes use to construct the Spruce Goose aircraft?
What was the empty weight of the Spruce Goose aircraft?
What was the empty weight of the Spruce Goose aircraft?
How many Pratt and Whitney engines powered the Spruce Goose aircraft?
How many Pratt and Whitney engines powered the Spruce Goose aircraft?
What was the altitude at which the Spruce Goose aircraft flew during its taxi tests?
What was the altitude at which the Spruce Goose aircraft flew during its taxi tests?
What is the current status of wood aircraft production?
What is the current status of wood aircraft production?
Which type of wood is typically used for construction and graded based on strength, load carrying ability, and safety?
Which type of wood is typically used for construction and graded based on strength, load carrying ability, and safety?
What are the acceptable defects in wood species used for aircraft repair?
What are the acceptable defects in wood species used for aircraft repair?
What is the mil spec for solid spruce?
What is the mil spec for solid spruce?
What is the mil spec for plywood?
What is the mil spec for plywood?
Where can one purchase wood components for aircraft repair?
Where can one purchase wood components for aircraft repair?
Which one of these is a type of defect that should be rejected in wood?
Which one of these is a type of defect that should be rejected in wood?
What are checks?
What are checks?
What are shakes?
What are shakes?
What are splits?
What are splits?
What is compression wood characterized by?
What is compression wood characterized by?
According to the text, what is the purpose of the AC mentioned?
According to the text, what is the purpose of the AC mentioned?
According to the text, when can the repairs identified in the AC be used for FAA approval of major repairs?
According to the text, when can the repairs identified in the AC be used for FAA approval of major repairs?
According to 14 CFR Part 65, what is required for a certificated mechanic to perform work for which they are rated?
According to 14 CFR Part 65, what is required for a certificated mechanic to perform work for which they are rated?
According to the text, why should an aircraft constructed or comprised of wood components be placed in a dry, well-ventilated hangar for inspection?
According to the text, why should an aircraft constructed or comprised of wood components be placed in a dry, well-ventilated hangar for inspection?
According to the text, what is permissible for light structures using single plywood covering?
According to the text, what is permissible for light structures using single plywood covering?
Which of the following is a potential indication of deterioration in the plywood and spruce structures of a wooden aircraft?
Which of the following is a potential indication of deterioration in the plywood and spruce structures of a wooden aircraft?
What may be required if there is deterioration in the leading and trailing edges of a wooden aircraft?
What may be required if there is deterioration in the leading and trailing edges of a wooden aircraft?
What can cause wood and glue deterioration inside a wooden aircraft structure?
What can cause wood and glue deterioration inside a wooden aircraft structure?
Why is glue joint inspection challenging in wooden aircraft structures?
Why is glue joint inspection challenging in wooden aircraft structures?
How can water penetration be detected in a wooden aircraft structure?
How can water penetration be detected in a wooden aircraft structure?
Flashcards
Wood in Aircraft
Wood in Aircraft
One of the first materials used in aircraft construction.
WWI Airplane Material
WWI Airplane Material
Wood frames covered with fabric.
Aircraft Material of Choice (Pre-1940s)
Aircraft Material of Choice (Pre-1940s)
Wood remained the primary material for aircraft until the 1930s.
Mosquito Bomber Designer
Mosquito Bomber Designer
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De Havilland Aircraft Materials (1940s)
De Havilland Aircraft Materials (1940s)
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Spruce Goose Material
Spruce Goose Material
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Spruce Goose Empty Weight
Spruce Goose Empty Weight
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Spruce Goose Engine Count
Spruce Goose Engine Count
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Spruce Goose Flight Altitude
Spruce Goose Flight Altitude
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Current Status of Wood Aircraft
Current Status of Wood Aircraft
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Wood type for construction
Wood type for construction
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Acceptable Wood Defects
Acceptable Wood Defects
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Solid Spruce Mil Spec
Solid Spruce Mil Spec
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Plywood Mil Spec
Plywood Mil Spec
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Wood Component Source
Wood Component Source
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Wood defect to reject
Wood defect to reject
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Checks (Wood)
Checks (Wood)
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Shakes (Wood)
Shakes (Wood)
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Splits (Wood)
Splits (Wood)
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Compression Wood
Compression Wood
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Purpose of AC
Purpose of AC
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AC Repair Approval
AC Repair Approval
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Mechanic's Work Requirement
Mechanic's Work Requirement
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Hangar Ventilation Purpose
Hangar Ventilation Purpose
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Acceptable Plywood Bulging
Acceptable Plywood Bulging
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Deterioration Indication
Deterioration Indication
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Required Action for Deterioration
Required Action for Deterioration
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Cause of Wood Deterioration
Cause of Wood Deterioration
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Challenge in Glue Joint Inspection
Challenge in Glue Joint Inspection
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Detecting Water Penetration
Detecting Water Penetration
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Study Notes
Inspection and Repair of Wooden Aircraft Structures
- Contours and alignment of leading and trailing edges need to be checked for shape deviation, as it indicates deterioration in the plywood and spruce structures.
- Deterioration in leading and trailing edges may affect the main wing structure, requiring a detailed internal inspection.
- Splits in fabric covering on plywood surfaces should be investigated to assess the condition of the plywood skin beneath.
- Moisture can cause wood and glue deterioration inside a structure, even without external indications.
- Musty or multi-odor during initial inspection indicates moisture, fungal growth, and possible decay inside the aircraft structure.
- Glue joint inspection in wooden aircraft structures is challenging due to limited access and difficulty in assessing joint integrity.
- Wood shrinkage caused by temperature and humidity changes can lead to glue joint deterioration, especially in cyclic environments.
- Glue joint failure can occur due to aging, moisture, mechanical forces, or incorrect application of pressure during manufacturing.
- Wood decay and dry rot are easily detectable through discoloration, softening, or crushing of the wood.
- Water penetration can be detected through dark gray streaks, discoloration, or corrosion around screws and fittings.
- Fabric covering on plywood surfaces provides an indication of the wood condition underneath and should be inspected for cracks or swelling.
- Mechanical defects, such as compression failures, cracks, or missing/loose attachments, should be checked in structural members and spars.
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