ADEQUATE VIS REF

Adequate VIS REF

From Introduction to Jeppesen Navigation Charts, Glossary

ADEQUATE VIS REF (Adequate Visual Reference) — Runway markings or runway lighting that provides the pilot with adequate visual reference to continuously identify the take-off surface and maintain directional control throughout the take-off run.

 

 

From Intruments Procedures Handbook (IPH, FAA-H-8083-16B, Chapter1 Departure Procedures, 1-11)

Adequate Visual Reference Another set of lower-than-standard takeoff minimums is available to Part 121 and Part 135 operations as outlined in their respective OpSpecs document. When certain types of visibility reports are unavailable or specific equipment is out of service, the flight can still depart the airport if the pilot can maintain adequate visual reference. An appropriate visual aid must be available to ensure the takeoff surface can be continuously identified, and directional control can be maintained throughout the takeoff run. Appropriate visual aids include high intensity runway lights, runway centerline lights, runway centerline markings, or other runway lighting and markings. With adequate visual references and appropriate OpSpec approval, commercial operators may take off with a visibility of 1600 RVR or ¼ SM.

 

 

* Adequate visual reference means that a pilot is able to continuously identify the takeoff surface and maintain directional control

 

 

결론 (Conclusion)

TAKEOFF CHART 에 ADEQUATE VIS REF 라고 표현되어 있으면,

이륙시 활주로를 인지 할 수 있는 시각 참조물, RWY MARKING 이나 LGT 류가 제공될 때, TAKE OFF MINIMUM 에 영향을 줄 수 있다.