Definition
The process by which a rotorcraft is certified under 14 CFR Part 29, the airworthiness standards for transport category helicopters. These are larger, more capable helicopters certified to higher standards than smaller normal category rotorcraft (Part 27), and are divided into Category A and Category B based on performance, engine isolation, and one-engine-inoperative capability. Category A rotorcraft are multi-engine designs with engine and system isolation features that allow continued safe flight after the failure of one engine. Category B rotorcraft may be single- or multi-engine and are not required to guarantee continued flight after engine failure, but must be capable of a safe landing.
Plain English
This is the FAA's set of rules used to approve larger helicopters for service. There are two levels: Category A is the stricter one for helicopters that must keep flying safely if an engine fails, and Category B is for helicopters that only need to land safely after an engine failure.
Context Anchor
You see this in the helicopter flight manual, especially in the limitations section, and in instrument procedure discussions that depend on the aircraft’s approved capabilities.
Derivation
Transport category' is borrowed from fixed-wing certification, where it identifies aircraft built to the highest civil airworthiness standards — typically airliners and large business aircraft. Applied to rotorcraft, it signals the same idea: a helicopter built and tested to a higher standard than a small private machine.
Why Pilots Care
Pilots must know their aircraft's certification category to apply the correct performance limits, weight restrictions, and emergency procedures specified in the flight manual.
Intuition Check
Do not read “transport category” as simply “used for transportation.” In FAA use, it means the rotorcraft was approved under a specific airworthiness category with defined standards and limits. Also, “certification” here refers to approval of the aircraft design, not the pilot’s certificate.
Example Sentence 1
The offshore operator's twin-engine helicopter was certified Category A, so the pilot used the published Category A takeoff profile from the oil platform.
Example Sentence 2
Limitations in the flight manual stem directly from the Certification of Transport Category Rotorcraft standards.