Cessna 172S Skyhawk SP (G1000) weight & balance

Data source

POH Section 2 Weight Limits and Center-of-Gravity Limits (p. 2-8); Section 6, Figure 6-3 Sample Loading Problem, Figure 6-4 Loading Graph, Figure 6-5 Loading Arrangements, Figure 6-7 Center-of-Gravity Moment Envelope (pages 21-187 of 172s-nav3__pim__2005.pdf) · version type

• Maximum ramp weight 2558 lb (normal), 2208 lb (utility); fuel allowance for start, taxi and runup 8 lb.
• Utility category: max takeoff/landing 2200 lb; baggage compartment must be empty and rear seat unoccupied.
• Normal envelope taken from printed Section 2 CG limits (fwd 35.0 in at 1950 lb or less, straight line to 41.0 in at 2550 lb; aft 47.3 in at all weights); 1500 lb lower bound is the chart's bottom edge.
• Utility envelope read from moment chart (Figure 6-7), converted arm = moment/weight; aft limit ~40.5 in is a chart reading (Section 2 utility CG limits page not provided); verify. Forward limit at 2200 lb computed 37.5 in from the normal forward-limit line.
• Seat arms are for average occupant; pilot/front passenger CG range FS 34-46, rear seat arm 73 (Sample Loading Problem lists FS 74).
• Baggage arms are area centers: A 95 (FS 82-108), B 123 (FS 108-142). Combined baggage A+B max 120 lb.
• Fuel: 56 USG total per loading graph, 53 USG usable; usable fuel arm FS 48.0; 6 lb/gal.
• Sample basic empty weight 1642 lb, moment 62.6 lb-in/1000 (arm computed ≈38.12 in); includes unusable fuel and full oil. Use your airplane's actual weighing record.
• Read from the POH by ZuluCheck and checked by a second reading; verify against your own manual.

For reference only. The aircraft’s approved flight manual and weighing report are the final authority.