Where can I find declared distances?
Declared distances are the distances the airport owner declares available for use in meeting an airplane’s takeoff run, takeoff distance, accelerate-stop distance, and landing distance requirements. At Part 139 airports declared distance data must be listed for all runway ends that are specified as Part 139 use.
What is declared runway distance?
Declared distances are specific lengths of runway that are published for aircraft operations, specifically when taking off or landing, and are defined for pilots to understand their allowable take-off and landing weights and speeds.
What is landing distance available?
Landing Distance Available (LDA). The length of the runway which is declared available by the appropriate Authority and is suitable for the ground run of an aeroplane landing.
What is accelerate stop distance available?
accelerate-stop distance available (ASDA means the length of the take-off run available plus the length of stopway, if such stopway is declared available by the State of the aerodrome and is capable of bearing the mass of the aeroplane under the prevailing operating conditions;2.’
Does TORA include displaced threshold?
The TORA (Takeoff Run Available) is the runway length declared available for the take-off run. This takeoff declared distance starts from the threshold (or displaced threshold if available) and finishes at the opposite threshold (or displaced threshold if available).
What is takeoff distance aviation?
The takeoff distance consists of two parts, the ground run, and the distance from where the vehicle leaves the ground to until it reaches 50 ft (or 15 m). The sum of these two distances is considered the takeoff distance. (Note: sometimes a 35 ft altitude is used).
What factors increase landing distance?
Actual landing distance is affected by various operational factors, including: High airport elevation or high density altitude, resulting in increased groundspeed; Runway gradient (i.e., slope); Runway condition (dry, wet or contaminated by standing water, slush, snow or ice);
What is takeoff distance?
What is ASDR aviation?
A balanced field takeoff is a condition where the accelerate-stop distance required (ASDR) is equal to the takeoff distance required (TODR) for the aircraft weight, engine thrust, aircraft configuration and runway condition.
How accurate are Jeppesen runway calculations?
They have been providing additional runway information long before the FAA started providing declared distances and are fairly accurate but there is some discrepancies pilots using Jeppesen products need to be aware of. Analysis of the two runway distance providers show Jeppesen’s takeoff value is very close to the FAA’s TORA value.
How does Jeppesen use the information from the FAA?
Jeppesen uses the information from the FAA to create it’s own charts. So, while the Jeppesen plate may have a date of “4 JUL 14” on the top of the plate, it will still have an official “TERPS AMEND” date it gets from the FAA.
Are the Jeppesen airport usable lengths charts designed for aircraft performance planning?
They are not designed for aircraft performance planning. The distances contained in the Usable Lengths section of the Jeppesen Airport charts are informational and are not intended to be used for take-off and landing performance planning. These distances are provided on the charts to assist with the operational use of the runway.
Is Jeppesen’s takeoff value close to the FAA’s Tora value?
Analysis of the two runway distance providers show Jeppesen’s takeoff value is very close to the FAA’s TORA value. Jeppesen’s landing beyond threshold value is the same value as the FAA’s LDA value. The two values that Jeppesen does not provide information for is TODA and ASDA. It is the ASDA value that will get multi-engine pilots in trouble.