Instruction Manual

G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air Page 7-47
190-00716-01 Revision 4
DIAL INDICATOR
Figure 7-11, Dial Indicator
The static port measurements are obtained at four locations on each static port as shown in Figure 7-13.
These measurements are used to find an AVERAGE and ANGLE for each of the four static ports. The
AVERAGE is calculated by adding the four measurements and dividing the total by 4. The ANGLE is
calculated by subtracting the minimum measurement from the maximum measurement. The calculated
AVERAGE and ANGLE for each static port must fall within the ranges shown in Figure 7-14.
Perform the static port measurement as follows:
1. Wipe the surface of static ports clean with isopropyl alcohol.
2. Place the gauging assembly onto the static port surface as shown in Figure 7-12.
DIAL INDICATOR
GAGING ASSEMBLY
STATIC PORT
FUSELAGE SKIN
Figure 7-12, Static Port Measurement
NOTE
The dial indicator shows 0.100 inch when completely flush. Therefore subtract the
readings from 0.100 inch to determine the actual static port height. This should be
completed before making any calculations.
3. For each static port, measure the static port height at the A, B, C and D locations as shown in Figure
7-13. Record the measurements in the measurement log, Figure 7-14.
4. Calculate the AVERAGE for each static port using the measurements by adding the four
measurements and dividing the total by 4. Record the AVERAGE in the measurement log, Figure
7-14.
5. Ensure the AVERAGE for each static port is within tolerance (+0.045 to +0.085 inch.) If it is not,
remove and reinstall the static ports as necessary to meet the tolerance.