Document ID: chunk:federal_register_of_legislation:F2005B00781:body:0:p3
Version: federal_register_of_legislation:F2005B00781
Segment Type: other
Provision Reference: 
Character Range: 5301–8248

Instructions for the use of these charts are provided at Appendix 2.

APPENDIX 1
CASA TAKE-OFF WEIGHT CHARTS — P SERIES —
INSTRUCTIONS FOR USE

1 Under Ambient Conditions:
1.1 Set altimeter on 29.92 inches Hg or 1013.2 millibars and read the pressure altitude of the aerodrome.
1.2 Apply this altitude to the pressure altitude in feet co-ordinate on the relevant take-off weight chart. Move vertically to intersect the temperature line representing the ambient temperature. This temperature shall be obtained from the aerodrome meteorological station.
Note: When there is no aerodrome meteorological station the reading of the aeroplane outside air temperature indicator may be used.
1.3 From this point move horizontally to intersect the corrected effective operational length available for take-off.
1.4 Move vertically downwards to intersect the head-wind component line at a point corresponding to the ambient head-wind component.
1.5 Move horizontally and read take-off weight. Record the weight thus obtained.
1.6 Ascertain the elevation of the aerodrome.
1.7 Apply this elevation to the elevation of aerodrome co-ordinate. Move vertically to intersect the take-off climb limitation line.
1.8 From this point move horizontally and read the take-off weight. Record the weight thus obtained.
1.9 The maximum permissible take-off weight shall be the lesser of the 2 weights as determined in paragraphs 1.5 and 1.8 above.
1.10 The take-off weight as obtained by the foregoing method shall apply only where the aeroplane is to be flown in the configuration specified in the relevant Take-off Weight Chart and with the engine power specified therein. The use of any other configuration or engine power is prohibited except where an application to use some other condition has been made to CASA and it has approved such condition.
1.11 For purpose of take-off weight computations, head-wind components in excess of 20 knots shall be deemed to be 20 knots.
2 Under Declared Conditions:
2.1 Use the appropriate seasonal Declared Density Altitude Chart, and add the elevation of the aerodrome concerned to the value read from the chart and thus obtain the declared seasonal density altitude.
2.2 Apply the declared seasonal density altitude to the density altitude co-ordinate of the take-off weight chart. Move horizontally to intersect the corrected effective operational length line corresponding to the corrected effective operational length available for take-off.
2.3 Move vertically downwards to intersect the zero head-wind component line.
2.4 From this point move horizontally read the take-off weight. Record the weight thus obtained.
2.5 Apply the valuation of the elevation of the aerodrome to the aerodrome elevation co-ordinate. Move vertically to intersect the take-off climb limitation line.
2.6 From this point move horizontally and read the all-up weight. Record the weight thus obtained.
2.7 The maximum permissible take-off weight