What are aircraft specifications?

• A. Documents that include basically the same information as the TCDS but are issued for aircraft, engines, and propellers certificated under the Air Commerce Regulations.
• B. A flight operations manual for pilots.
• C. A list of recommended maintenance intervals.
• D. A registry of aircraft owners.

Answer: (A)

Aircraft specifications are official certification documents that spell out the design and performance data approved for a specific aircraft, engine, or propeller when it was certificated under the earlier Air Commerce Regulations. They contain information similar to what you’d find in a Type Certificate Data Sheet, but they apply to the particular product rather than a general type. This makes them the authoritative source for what that specific aircraft configuration is permitted to be and do. They’re not about flight operations procedures, maintenance intervals, or who owns the aircraft—that’s why those other options describe different kinds of documents.