OBSTRUCTION ACCURACIES

AIRPORT OBSTRUCTION CHART SURVEYS
• NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FT. AGL
• MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL

AREA NAVIGATION APPROACH (CONVENTIONAL LANDING) SURVEYS NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FT. AGL MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL

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AIRPORT OBSTRUCTION CHART SURVEYS NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FT. AGL

(VALUES ARE IN FEET) ITEM HORZ VERTICAL AGL ORTHO ELLIP NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FT. AGL, THAT PENETRATE THE FOLLOWING OBSTRUCTION IDENTIFICATION SURFACE: A PRIMARY SURFACE 20.00 3.00 3.00 N/A THOSE AREAS OF AN APPROACH SURFACE WITHIN 10,200 FEET OF THE RUNWAY END 20.00 3.00 3.00 N/A THOSE AREAS OF A PRIMARY TRANSITION SURFACE WITHIN 500 FEET OF THE PRIMARY SURFACE 20.00 3.00 3.00 N/A THOSE AREAS OF AN APPROACH TRANSITION SURFACE THAT ARE WITHIN 500 FEET OF THE APPROACH SURFACE AND ALSO WITHIN 2,766 FEET OF THE RUNWAY END 20.00 3.00 3.00 N/A THOSE AREAS OF A PRIMARY TRANSITION SURFACE FURTHER THAN 500 FEET FROM THE PRIMARY SURFACE 50.00 20.00 20.00 N/A THOSE AREAS OF AN APPROACH TRANSITION SURFACE FURTHER THAN 500 FEET FROM AN APPROACH SURFACE AND ALSO WITHIN 10,200 FEET OF THE RUNWAY END 50.00 20.00 20.00 N/A THE HORIZONTAL SURFACE 50.00 20.00 20.00 N/A THOSE AREAS OF AN APPROACH SURFACE FURTHER THAN 10,200 FEET FROM THE RUNWAY END 100.00 50.00 50.00 N/A THOSE AREAS OF AN APPROACH TRANSITION SURFACE FURTHER THAN 10,200 FEET FROM THE RUNWAY END 100.00 50.00 50.00 N/A THE CONICAL SURFACE 100.00 50.00 50.00 N/A

AIRPORT OBSTRUCTION CHART SURVEYS MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL
(VALUES ARE IN FEET) ITEM HORZ VERTICAL AGL ORTHO ELLIP MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL THAT PENETRATE THE FOLLOWING OBSTRUCTION IDENTIFICATION SURFACE: A PRIMARY SURFACE 20.00 3.00 3.00 10.00 THOSE AREAS OF AN APPROACH OR APPROACH SURFACE WITHIN 10,200 FEET OF THE RUNWAY END 20.00 3.00 3.00 10.00 THE PRIMARY TRANSITION SURFACE 20.00 3.00 3.00 10.00 AN APPROACH OR APPROACH TRANSITION SURFACE FURTHER THAN 10,200 FEET FROM THE RUNWAY END 50.00 3.00 3.00 10.00 THE HORIZONTAL SURFACE 50.00 3.00 3.00 10.00 THE CONICAL SURFACE 50.00 3.00 3.00 10.00
ACCURACIES ARE RELATIVE TO THE NEAREST PACS, SACS, OR HRP
DISTANCES RELATIVE TO THE THRESHOLD OR RUNWAY END ARE MEASURED ALONG THE RUNWAY CENTERLINE OR CENTERLINE EXTENDED TO THE ABEAM POINT.

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OBSTRUCTIONS : ANA APPROACH (CONVENTIONAL LANDING) SURVEYS NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FT. AGL

(VALUES ARE IN FEET) ITEM HORZ VERTICAL AGL ORTHO ELLIP NON MAN-MADE OBJECTS, AND MAN-MADE OBJECTS LESS THAN 200 FT. AGL, THAT PENETRATE THE FOLLOWING OBSTRUCTION IDENTIFICATION SURFACE: A PRIMARY SURFACE 20.00 3.00 3.00 N/A THOSE AREAS OF AN APPROACH SURFACE WITHIN 10,200 FEET OF THE THRESHOLD 20.00 3.00 3.00 N/A THOSE AREAS OF AN APPROACH TRANSITION SURFACE WITHIN 2,766 FEET OF THE THRESHOLD (AREA T1) 20.00 3.00 3.00 N/A THOSE AREAS OF THE APPROACH TRANSITION SURFACE FURTHER THAN 2,766 FEE FROM THE THRESHOLD BUT NOT MORE THAN 10,200 FEET FROM THE THRESHOLD 50.00 20.00 20.00 N/A THE MISSED APPROACH SURFACE 50.00 20.00 20.00 N/A THOSE AREAS OF AN APPROACH  SURFACE FURTHER THAN 10,200 FEET FROM THE THRESHOLD 100.00 50.00 50.00 N/A THOSE AREAS OF AN APPROACH  TRANSITION SURFACE FURTHER THAN 10,200 FEET FROM THE THRESHOLD 100.00 50.00 50.00 N/A

ANA APPROACH (CONVENTIONAL LANDING) SURVEYS MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL
(VALUES ARE IN FEET) ITEM HORZ VERTICAL AGL ORTHO ELLIP MAN-MADE OBJECTS EQUAL TO OR GREATER THAN 200 FEET AGL THAT PENETRATE THE FOLLOWING OBSTRUCTION IDENTIFICATION SURFACE: A PRIMARY SURFACE, THOSE AREA OF THE APPROACH AND TRANSITION SURFACES WITHIN 10,200 FEET OF THE THRESHOLD 20.00 3.00 3.00 10.00 THE MISSED APPROACH SURFACE 20.00 3.00 3.00 10.00 THOSE AREAS OF THE APPROACH AND TRANSITION SURFACES FURTHER THAN 10,200 FEET FROM THE THRESHOLD 50.00 3.00 3.00 10.00
ACCURACIES ARE RELATIVE TO THE NEAREST PACS, SACS, OR HRP
DISTANCES RELATIVE TO THE THRESHOLD OR RUNWAY END ARE MEASURED ALONG THE RUNWAY CENTERLINE OR CENTERLINE EXTENDED TO THE ABEAM POINT.