Before you climb into the cockpit and depart on even the simplest local flight, federal aviation regulations require that your aircraft be equipped with a specific set of instruments and equipment. The governing rule is 14 CFR 91.205, which lists the minimum equipment required for day VFR and adds additional items for night VFR operations. Mastering this rule is essential not only for passing the FAA Private Pilot Knowledge Test but also for making sound preflight decisions every time you fly.
Understanding why each item is required—not just memorizing a list—helps you remember the regulation under pressure and apply it correctly in real situations. Let's walk through the requirements methodically, starting with the daytime baseline and then adding the night-specific equipment.
Day VFR Equipment Requirements
Under 14 CFR 91.205(b), the following instruments and equipment are required for powered civil aircraft during day VFR flight. Each item is listed in the regulation, and each one serves a critical function:
- Airspeed indicator — Tells you how fast the aircraft is moving through the air; essential for maintaining safe flying speeds and recognizing stall margins.
- Altimeter — Displays pressure altitude, allowing you to comply with altitude assignments and terrain clearance requirements.
- Magnetic direction indicator (magnetic compass) — A self-contained, non-electrical backup for navigation; required because it operates independently of the aircraft's electrical system.
- Tachometer for each engine — Monitors engine RPM so the pilot can set proper power settings and protect the engine from over-speed.
- Oil pressure gauge for each engine using a pressure system — Provides real-time indication of oil pressure; loss of oil pressure is an early warning of impending engine failure.
- Temperature gauge for each liquid-cooled engine — Monitors coolant temperature to prevent engine overheating.
- Oil temperature gauge for each air-cooled engine — Equivalent monitoring for air-cooled engines (common in piston GA aircraft).
- Manifold pressure gauge for each altitude engine — Required for engines equipped with a supercharger or turbocharger; helps manage power output and prevent over-boost.
- Fuel gauge indicating the quantity in each fuel tank — Must be operational during flight, though it need not be perfectly accurate at all tank levels—it must be accurate when tanks read empty, per FAA interpretation.
- Landing gear position indicator (if the aircraft has retractable landing gear) — Provides a clear indication that gear is up or down and locked.
- Flotation gear and at least one pyrotechnic signaling device (if operating for hire over water beyond power-off gliding distance from shore) — A safety-of-flight requirement for overwater commercial operations, though private pilots should be aware of it.
- Safety belts for each occupant — Required for all occupants; shoulder harnesses are additionally required for pilot and front-seat passengers in aircraft manufactured after specific dates per 14 CFR 91.107.
- ELT (Emergency Locator Transmitter) — Required for most civil aircraft per 14 CFR 91.207, not 91.205 directly, but closely related and commonly tested together.
Additional Equipment Required for Night VFR
Night flying introduces significantly reduced outside visual cues and places greater demands on both pilot and aircraft. Accordingly, 14 CFR 91.205(c) requires all of the day VFR equipment plus the following items for night VFR operations:
- Approved position lights (navigation lights) — Red on the left wingtip, green on the right wingtip, and white on the tail. These allow other pilots to determine your aircraft's position, direction of travel, and relative movement. Required to be on from sunset to sunrise per 14 CFR 91.209.
- An approved aviation red or aviation white anticollision light system — A rotating beacon or strobe lights that make the aircraft conspicuous. Many pilots turn these on before engine start as a safety habit; regulations require them during night operations.
- Landing light (if the aircraft is operated for hire) — Only mandatory for hire operations at night, but strongly recommended for all night flights for safety and collision avoidance during approach.
- Adequate source of electrical energy for all installed electrical and radio equipment — The aircraft's electrical system must be capable of powering all required and installed equipment; a weak or failing battery is not acceptable.
- Spare set of fuses (one spare of each kind required, or three spare fuses of each kind required if the fuses are not accessible in flight) — Required so that a blown fuse does not leave you without critical electrical equipment in the dark.
Why This Matters
Flying with inoperative or missing required equipment is not just a regulatory violation—it is a genuine safety risk. The day VFR list ensures you have situational awareness of your aircraft's speed, altitude, heading, and powerplant health. The night VFR additions address the unique hazards of low-visibility darkness: other pilots need to see you (hence position lights and anticollision lights), your own electrical system must be reliable, and you need a contingency plan for electrical faults (spare fuses).
There is also a practical enforcement dimension. Under 14 CFR 91.213, certain inoperative equipment may be legally deferred using a Minimum Equipment List (MEL) or, for aircraft without an MEL, using the four-part decision process outlined in the regulation. However, equipment specifically listed in 91.205, the aircraft's type certificate data sheet, or an Airworthiness Directive cannot simply be deferred without proper maintenance action. Understanding 91.205 is therefore the foundation for understanding 91.213 as well.
Key Numbers and Rules
- 14 CFR 91.205(b) — Day VFR equipment list (the baseline).
- 14 CFR 91.205(c) — Night VFR adds position lights, anticollision lights, electrical energy source, spare fuses, and a landing light (if for hire).
- 14 CFR 91.209 — Position lights required from sunset to sunrise.
- 14 CFR 91.213 — Governs inoperative equipment and the MEL process.
- Fuel gauge accuracy: must be accurate at the empty indication; other readings may vary but must show quantity during preflight.
- Anticollision light: the regulation specifies either an aviation red or aviation white light—strobes (white) and rotating beacons (red) both satisfy this requirement depending on the aircraft type and certification.
- Spare fuses: one of each kind if accessible in flight; three of each kind if fuse box is not accessible during flight.
Memory Aid
The classic FAA-endorsed mnemonic for Day VFR equipment is A TOMATO FLAMES (sometimes written as ATOMATOFLAMES). Here is what each letter stands for:
- A — Airspeed indicator
- T — Tachometer (for each engine)
- O — Oil pressure gauge (for each engine using a pressure system)
- M — Manifold pressure gauge (for each altitude engine)
- A — Altimeter
- T — Temperature gauge (liquid-cooled) / Oil temperature (air-cooled)
- O — Oil temperature gauge (air-cooled engines)
- F — Fuel gauge (quantity, each tank)
- L — Landing gear position indicator (if retractable)
- A — Airworthiness certificate/documents (not a 91.205 equipment item, but often used to fill out this letter in the mnemonic)
- M — Magnetic compass
- E — ELT
- S — Safety belts
For the additional Night VFR items, use FLAPS:
- F — Fuses (spare set)
- L — Landing light (if for hire)
- A — Anticollision light system
- P — Position lights
- S — Source of electricity (adequate electrical power)
Common Test Traps
- Night landing light confusion: Many students believe a landing light is required for all night VFR flight. In fact, 14 CFR 91.205(c) requires a landing light only when the aircraft is operated for hire at night. Private flights have no mandatory landing light—though it is strongly recommended for safety.
- Fuel gauge accuracy: The regulation does not require fuel gauges to be precisely accurate at all readings—only at the empty indication. A gauge that overreads half-tanks is technically legal, though operationally dangerous if you rely on it blindly.
- Anticollision vs. position lights: These are two separate items. Position lights (red/green/white wingtip and tail) and the anticollision system (beacon or strobes) are both required for night VFR. The test may offer answers that list only one of the two.
- Spare fuses—quantity depends on accessibility: If the fuse panel is accessible from the pilot's seat during flight, only one spare of each type is needed. If not accessible in flight, three spares of each type are required. Many students memorize only one version of this rule.
- ELT is in 91.207, not 91.205: The ELT requirement lives in a separate regulation, 14 CFR 91.207. Test questions sometimes present it as part of 91.205 or ask which regulation governs it. Know the distinction, even though the ELT is still required equipment on most civil aircraft.