Sunday, May 2, 2021

Data Sheet- Cessna 172SP

 

Discuss V-speeds (PHAK 10-17) (POH section 2)



         68 KIAS -  Best Glide  Speed 

Vso   40KIAS  -  Stall in landing configuration 
Vs1   48KIAS  -  Stall in cruise configuration 
Vr     55 KIAS  -  Rotation speed 
Vx    62 KIAS  -  Best angle of climb speed  (greatest altitude gain per distance over the ground)
Vy    74 KIAS   -  Best rate of climb speed  (greatest altitude gain per unit of time)

Va                      - Maneuvering speed 
105 KIAS    2550 lbs. 
98 KIAS      2200 lbs. 
90 KIAS      1900 lbs 

Vfe                    - Flaps extended 
110 KIAS     0-10° 
85 KIAS      10-30° 

Vno 129 KIAS  - Max. structural cruising speed (flight above this speed only permissible in smooth air)
75-85 KIAS       - Enroute climb speed 
60-70 KIAS       - Approach Speed 

Vne 163 KIAS   - Never exceed speed 
Demonstrated Crosswind Component 15 knots


Weights
Aircraft Number Empty Weight     Empty Moment         Useful Load
N3506X              1676.2 lbs            67,731                        881.8 lbs


Maximum Weights         Normal         Utility
Ramp Weight                 2558 lbs         2208 lbs
Takeoff Weight               2550 lbs        2200 lbs
Landing Weight              2550 lbs        2200 lbs
Baggage Weight                 20 lbs.            empty
Area 1                                120 lbs            empty
Area 2                                 50 lbs             empty


Powerplant
Engine: Textron Lycoming IO-360, 180 BHP @ 2700 RPM. 4 Cylinders, Direct Drive,
horizontally opposed, air cooled, fuel injected.

Oil: Full 8 qts.
Min for local flight 6 qts.
Min for x-country 7 qts.
Grade and type Summer-100W50
Winter- 65W30

Fuel System
Fuel: Approved Grades 100LL(blue), 100(green)
Total Fuel 56 gal.
Total Usable Fuel 53 gal.

System Description: The airplane is equipped with a standard fuel system consisting of two vented fuel tanks, a fuel tank selector valve, fuel strainer, and auxiliary fuel pump. Fuel flows by gravity from one or both tanks to the fuel selector, through a fuel strainer to the injector manifold. From the injector, the fuel flows to the cylinders and is mixed with air at the intake port. The fuel selector should be in the BOTH position for takeoff, climb, descent, landing, and maneuvers that involve prolonged slips and skids. Operation from either the LEFT or RIGHT position is reserved for level cruising flight only.

Landing Gear and Brakes
System Description: Landing gear is fixed in the tricycle configuration with a steerable nosewheel. Nosewheel is steerable and differential braking allows for a tighter turn radius. Nose strut is an air-oil type shock. Each main gear is equipped with a hydraulically activated single disk brake on the inboard side of each wheel.

Tire Inflation: Mains 38 PSI
Nose 45 PSI

Electrical System
Alternator- 28 volt, 60 ampere
Battery- 24 volt

System description: Power is supplied to most general electrical items through a split primary bus bar, with an essential bus wired between the two primaries to provide power for the master switch and annunciator circuits. Each primary bus bar is also connected to an avionics bus bar via a single avionics power switch. The avionics power switch should be turned off prior to starting the engine to prevent harmful transient voltages from damaging the avionics equipment. The ammeter shows a discharge or a charge on the battery and should remain at or near the zero indication after a brief charging period.

Pitot-Static System
System description: The system is standard with a heated pitot head under the left wing and two static ports on either side of the nose cowling. The alternate static source is located on the panel above the throttle and supplies static pressure from inside the cockpit.
Speeds

  • A - Airspeed - (best glide)
  • B - Best Landing Site 
  • C - Checklist - (a quick flow before even touching the checklist: mixture full in, gas on fullest tank mag switch to one and/or two
  • D - Declare - (7700/ATC)
  • E - Egress  - (ensure seat belts are secure, open door so it doesn’t get jammed, if available, use soft objects for protection.


Aircraft Performance

No comments:

Post a Comment