Common Slope Angle Conversions

RATIO

PERCENT

DEGREES

SURFACE TYPE(S)

FAR Part 77

7:1

14.29

8.13^o

Transitional

20:1

5.00

2.86^o

Visual Approach & Conical

34:1

2.94

1.68^o

Nonprecision Approach

40:1

2.50

1.43^o

Precision Approach (outer)

50:1

2.00

1.15^o

Precision Approach (inner)

8:1

12.50

7.13^o

Approach (heliport)

Other

15:1

6.67

3.81^o

PAPI Angle

14.3:1

6.99

4.00^o

PAPI Angle

80:1

1.25

0.72^o

Clearway

1:1

100

45^o

(100% gradient)