Definition
An FAA document issued as part of an aircraft's type certificate that records the official specifications, limitations, and approved configurations of that aircraft model. It lists items such as approved engines and propellers, weight and balance limits, airspeed limits, fuel and oil requirements, control surface movement ranges, and any equipment or operating conditions required for the aircraft to remain airworthy in its certificated category.
Plain English
The official FAA fact sheet for an aircraft model. It lists what the aircraft is allowed to have on it, what limits it must operate within, and the conditions it was approved under when the FAA certified it.
Context Anchor
Pilots usually encounter a TCDS when learning how the FAA certifies aircraft, checking aircraft records, or understanding whether an airplane still matches its approved design after equipment changes or maintenance.
Derivation
A 'type certificate' is the FAA's approval of an entire aircraft design (the 'type'). The 'data sheet' is the attached record of the specifications that approval covers. Together: the data behind the type approval.
Why Pilots Care
Pilots and maintenance personnel use the TCDS to confirm that an aircraft remains in its approved configuration and to determine whether proposed changes are permissible without additional FAA approval.
Intuition Check
Do not think of a TCDS as a pilot checklist or a flight manual. It is an FAA approval record for the aircraft type, not a step-by-step operating guide.
Example Sentence 1
Before signing off the annual inspection, the mechanic checked the TCDS to confirm the installed propeller was on the approved list.
Example Sentence 2
Before buying the airplane, the pilot reviewed the TCDS to confirm its original certified maximum takeoff weight.