Understanding flight phases helps you plan and manage a flight from planning to landing. The four primary phases are preflight, takeoff, cruise (en route), and approach/landing. Preflight covers everything you do before engines start—weather checks, weight and balance, fuel planning, flight plan confirmation, and systems checks. It sets up safety and readiness for the flight. Takeoff is the transition from the ground to the air and the initial climb, where maintaining proper airspeed, alignment with the runway, and a clean configuration are critical to a safe departure. Cruise, or the en route phase, is the main portion of the flight where you fly at cruising altitude, manage navigation, monitor systems, and optimize fuel use while communicating as needed with air traffic control. Approach/landing is the descent and final maneuvering to land, including configuring the aircraft for landing, aligning with the runway, and executing the rollout and exit from the runway. Other groupings either mix in ground activities like taxi or split climb and descent in ways that don’t reflect the standard sequence of planning, departure, en route, and arrival.

CPR is a basic aircrew survival skill because it provides immediate life support in emergencies where a person is unresponsive and not breathing. In survival situations, especially after a crash or when medical help may be delayed, keeping blood circulating and delivering oxygen to vital organs buys precious time until advanced care can arrive. CPR is portable, requires minimal equipment, and is a foundational first-aid skill taught in survival training, making it highly practical for aircrews. The other options don’t fit as basic survival skills in this context: fire fighting is a specialized response to aircraft fires that goes beyond the typical survival toolkit; oxygen management is essential for flight operations but not a survival technique used after an emergency on the ground or in the field; cloud navigation isn’t relevant to immediate life-saving actions.

FPCON levels rise with the credibility and immediacy of a threat. When an incident occurs or intelligence indicates terrorist action is highly likely, the security posture moves to the level where defenses are significantly intensified and responses are ready for rapid escalation. This is the level described here, signaling that a credible threat is imminent and security measures must be tightened accordingly. It sits above the normal and general-threat levels, and below the highest state brought on by an actual attack.

The go/no-go decision rests with the Pilot in Command because that person is responsible for the safety of the aircraft, crew, and passengers and has the final authority over whether to start, continue, or abort a flight. The PIC evaluates all safety-critical factors—aircraft condition and maintenance status, crew readiness, weather and visibility, fuel feasibility, weight and balance, regulatory requirements, NOTAMs, and other operational constraints. When any factor poses an unacceptable risk, the flight is delayed, diverted, or canceled. The dispatcher provides planning information, weather briefings, route and fuel planning, and can issue a flight release, but the final decision to proceed or not lies with the PIC (or a designated authority acting in place of the PIC). The flight attendant handles in‑cab safety within the aircraft but does not authorize flight decisions. The Aircraft Maintenance Officer ensures airworthiness and can flag issues that prevent flying, but does not independently grant permission to fly over the PIC’s safety determination.