Who Is Responsible for Determining That an Aircraft Is Airworthy Before Flight?

The Regulation Is Clear: It Falls on the PIC

When your designated pilot examiner asks who is responsible for determining whether an aircraft is airworthy before flight, there is only one correct answer: the pilot in command. This is not a trick question, and it is not open to interpretation. Under 14 CFR 91.7(b), the pilot in command of a civil aircraft is expressly responsible for determining whether that aircraft is in a condition for safe flight. The FAA placed this responsibility on the person sitting in the left seat, not the mechanic, not the flight school, and not the aircraft owner — the PIC.

This is one of those regulations that sounds simple on the surface but carries enormous practical weight. Every time you conduct a preflight inspection, you are not just going through a checklist as a formality. You are fulfilling a legal obligation. You are the final authority on whether that aircraft leaves the ground.

Where the Mechanic Ends and the PIC Begins

One of the most common mistakes student pilots make on the oral exam is blurring the line between maintaining airworthiness and determining airworthiness. These are two distinct responsibilities assigned to two different people, and your examiner will notice immediately if you confuse them.

An FAA-certificated aircraft mechanic — an A&P — is responsible for performing inspections, making repairs, and signing off maintenance entries that keep the aircraft in an airworthy condition over time. That is their lane. But on the morning of your flight, when you walk out to the ramp and put your hands on that airplane, the determination of whether it is safe to fly is yours alone. The mechanic who completed the annual inspection three months ago cannot make that call for you today. Neither can the FBO that manages the aircraft.

This distinction matters practically, too. If you discover a discrepancy during your preflight — a cracked landing light lens, an oil level that looks low, or a control surface that feels stiffer than usual — it is not automatically the FBO's problem to handle before you decide what to do. You are the one who must evaluate the finding, determine its significance, and make a go or no-go decision. You may absolutely involve a mechanic to assess a defect, but the judgment call about whether to fly belongs to you.

What Happens When You Find a Discrepancy

Discovering something unusual during a preflight does not automatically mean the aircraft is unairworthy — but it does mean you have work to do before you start the engine. The key question is whether the discrepancy affects the aircraft's ability to operate safely within the conditions of your intended flight.

This is where the concept of a Minimum Equipment List (MEL) becomes relevant. An MEL is an FAA-approved document specific to a particular aircraft that allows certain instruments or equipment to be inoperative under defined conditions, provided the operator follows specific procedures. If an aircraft has an approved MEL and the inoperative item is listed, flight may be legal and safe. However, most small general aviation aircraft used for private pilot training do not have an approved MEL. Without one, any inoperative instrument or piece of required equipment must be repaired before the aircraft can legally depart.

The practical takeaway for your checkride is this: if you find something broken and there is no MEL to back up a decision to fly with it, the aircraft does not go. That is not the FBO's call. That is yours.

Why Examiners Ask This Question — and What They Want to Hear

This question appears on oral exams precisely because the stakes behind it are so high. A pilot who does not understand that airworthiness determination is their personal, non-delegable responsibility is a pilot who might defer that judgment to someone else — and that is how accidents happen. Your examiner is not looking for a recitation of the regulation number alone. They want to hear that you genuinely understand what it means to be pilot in command before the wheels ever leave the runway.

A strong answer references 91.7(b) directly, clearly separates the PIC's role from the mechanic's role, acknowledges that the responsibility begins at preflight and continues throughout the flight, and demonstrates awareness of how MELs factor into inoperative equipment decisions. Confidence matters here. This is an easy question by design, and hesitating on it sends the wrong signal.

Internalize this principle now, before your checkride: the certificate you are earning comes with real authority — and real accountability. The airworthiness of your aircraft on every flight is your responsibility from the moment you begin your preflight to the moment you shut down the engine.

If you want to practice questions like this in a realistic oral exam format, try SimulatedCheckride.com.