Tripacer load factor

TexasOredigger

Non-Member
Hello all, I’m new to this forum, please direct/correct me accordingly if I mis-post something.

I’ve also recently bought into a 1959 Tripacer, and looking for info on load factor. The original flight manual has scant info on this and simply states the following:


  • Max Positive – 3.8
  • Max Negative – “No Inverted Maneuvers Approved”

Does this equate to no load factor < 0g? Or does it relate to mechanical/fuel system restrictions? Or both, or something else?
 
A ‘59 TriPacer can be either Normal Category or Utility Category if the Utility kit is installed (removes the rudder interconnect and installs the Colt steering arm and centering springs along with a Flight Manual Supplement). All PA-22s are certified under CAR 3. Under CAR 3 a Normal Category has to be designed to a positive 3.8g and -1.5 g. A Utility category airplane has to meet a positive 4.4G load and -1.8 g. These are the design requirements. The actual limitations imposed by the flight manual are +3.8g and -0 g when operating in the Normal Category and +4.4 g and -0g when operating in Utility Category. Keep in mind that to operate in Utility you have a lower gross weight (1680 lbs) and a much tighter CG range. In Utility you can do spins, steep turns, stalls (except whip stalls) Chantelle’s and lazy 8s. No snap maneuvers and no inverted maneuvers.


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...All PA-22s are certified under CAR 3. Under CAR 3 a Normal Category has to be designed to a positive 3.8g and -1.5 g. A Utility category airplane has to meet a positive 4.4G load and -1.8 g. These are the design requirements. The actual limitations imposed by the flight manual are +3.8g and -0 g when operating in the Normal Category and +4.4 g and -0g when operating in Utility Category...

Thanks dgapilot! I did notice in the original Flight Manual that the approval basis is CAR 3, and that CAR 3.186 requires +3.8/-1.5g. But as you indicate, the Flight Manual imposes +3.8/0g limitations. Why the seemingly contradictory information on the negative load factor?
 
Thanks dgapilot! I did notice in the original Flight Manual that the approval basis is CAR 3, and that CAR 3.186 requires +3.8/-1.5g. But as you indicate, the Flight Manual imposes +3.8/0g limitations. Why the seemingly contradictory information on the negative load factor?
Certification standards are usually 150% of what they are approved for. A little cushion. ;)
 
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