In aviation, the rule of three or "3:1 rule of descent" is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent.
It's called the 3-2-1 rule, and it's the easiest way to remember the regulation. To recap, if the weather at your destination isn't at least 3 SM of visibility and 2000' AGL ceilings from 1 hour before to 1 hour after your ETA, you need to file an alternate.
In aviation, pilots adopted a formula to assure a slow, based on a 3° descent rate, steady and comfortable descent: the rule of three or "3:1 rule of descent". This rule implies 3 NM of travel should be allowed for every 1,000 feet (300 m) of descent.
For larger aircraft, typically people use some form of the 3/6 Rule: 3 times the altitude (in thousands of feet) you have to lose is the distance back to start the descent; 6 times your groundspeed is your descent rate.
That's why pilots are taught the 1 in 60 rule, which states that after 60 miles, a one-degree error in heading will result in straying off course by one mile. Which means the lake you planned to fly over could turn out to be a mountain.
The 80:20 rule means airlines need to use their take-off slots at least 80% of the time in order to retain them. A "justified non-use provision" will be retained to prevent airlines flying ghost flights.
The Twelve-Five Standard Security Program (TFSSP) outlines requirements for FAA Part 135 certificated carriers offering commercial air transport using aircraft with a maximum certificated takeoff weight between 12,500 pounds (5,670 kg) and 100,309.3 pounds (45,500 kg).
To help pilots better apply the principles of ADM, the FAA adopted the 3-P Model (Perceive — Process — Perform). This three-step process offers a simple, systematic approach to accomplishing each ADM task during all phases of flight.
(1) No person shall enter or be in the terminal building of any Government aerodrome or public aerodrome or part of such building or any other area in such - aerodrome notified in this behalf by the Central Government unless he holds an admission ticket issued by the aerodrome operator or an entry pass issued by the ...
(30/70 Rule) If you must clear obstructions on takeoff, you'll need to have 70% of your rotation speed by the time you've traveled 30% of your available takeoff distance.
This means you should begin your descent 105 nautical miles from your destination, maintaining a speed of 250 KIAS (about 45 percent N1) and a descent rate of 1,500 to 2,000 feet per minute, with thrust set at idle.
If you know your flight path angle (FPA), which you'll often find in modern flight decks, the 60-1 rule can make mental math descent planning easy. For every 1 degree of descent angle, you'll descent 100 feet for every 1 mile you fly.
From a 787-8 FCOM: For our current weight of 488000 lbs at 290 KIAS - roughly 334 KTAS, passing through 10000ft on the descent the descent rate should be 1500 ft/min with a pitch angle of around zero degrees. That's a glide ratio of 1:22.5 or 3.7 NM per 1000ft.
Instruments and Equipment: Rule 57 of Aircraft Rules, 1937 and Civil Aviation Requirements Section 2 - Airworthiness Series 'I' Part II and Series 'R' Part I- Provides for minimum instruments and equipment including Communication and Navigation equipment which are to be installed on aircraft depending on their ...
Most maintenance personnel have heard of the 18-inch rule and know what it means. For those who don't, the 18-inch rule means that whenever you do Use the right fluid, in the right maintenance or inspect an aircraft, you should not focus on just that task or specific area alone.
Use the same indicated airspeed for landing regardless of altitude. A 10 percent increase in touchdown speed equals a 21 percent increase in landing distance.
What is the 50/70 rule? It's a general rule for GA aircraft that states if you haven't reached 70% of your takeoff speed by the time you've reached 50% of the length of the runway, you should abort your takeoff. Why do you need 70% of your takeoff speed by 50% of the runway?
(a) in any part of an aircraft or in its vicinity, in which a notice is displayed indicating that smoking is prohibited.
The 1 in 60 rule states that if you're off course by 1NM after 60 miles flown, you have a 1-degree tracking error. Time to correct that heading! Another tip: If you're 60 miles away from a VOR, and you're off course by one degree, you're off course by one mile.
ICAO Document 9859 has strongly influenced the FAA, EASA, Transport Canada and others to develop an SMS framework based on the following four elements or "pillars": Safety Policy. Safety Risk Management. Safety Assurance.
One practical application is called the “Five Ps (5 Ps).” [Figure 1] The 5 Ps consist of “the Plan, the Plane, the Pilot, the Passengers, and the Programming.” Each of these areas consists of a set of challenges and opportunities that every pilot encounters.
If no obstacle or terrain penetrates a 40:1 slope (termed the obstacle clearance surface (OCS) or obstacle identification surface (OIS)) from the departure end of the runway (DER), an aircraft may turn in any direction and remain clear of obstacles while climbing at 200‗/NM.
Rule 58 of Aircraft Rules, 1937 requires that every aircraft shall be weighed and its centre of gravity determined.
To comply with Rule 11
An aircraft must not fly, take off or land within the ATZ of an aerodrome unless the commander of the aircraft has complied with paragraphs 2, 3 or 4 as appropriate.