P&M Aviation QUIK-GTR, Operator'S Manual, Page: 79 / 95

P&M Aviation Quik-GTR Manual, Quik-GTR1.0doc
Page 79
12.6. INSPECTION CRITERIA:
General
In the main, the safe working life of the structural components of the P&M Quik-GTR is dictated by the
environment in which the aircraft is used and the care taken during day to day operations. Inspection, therefore,
is an essential tool in deciding the continued use of most components.
Some parts such as bolts are not amenable to fatigue crack inspection, therefore it is more practical to replace
them. Nyloc nuts in primary structure should not be used more than once. At least one complete thread must
protrude. Split pins should only be used once.
Unless otherwise specified, airframe bolts should be tightened so as to remove all free play without causing
distortion of the parts (e.g. ovalising or denting tubes).
Sail & Stitching inspection:
The Polyester sailcloth is subject to degradation by UV light. Spun PTFE Stitches can be weakened by abrasion.
The Bettsometer test gives a good indication of the capability of the sailcloth to transfer load at a stitch hole.
The sail should be checked in the root, midspan and tip areas of single thickness main body sailcloth.
Enough tension should be applied to the sailcloth to prevent it puckering at the test needle.
The sailcloth should be tested to 1000 grammes with a 1.2mm needle in the warp direction (spanwise), loading
the fine fabric, not the rip-stop thread. The fine fabric must not rip at 400gr load.
Bolts:
Finish: Not corroded
Wear:
Not above .025mm (.001”)
Must not be bent or have damaged threads.
Rigging Cables:
No corrosion, broken strands, kinking of cable or thimbles,
Or any sign of movement at a swage.
(Plastic boots must be slid back to inspect swages.)
Any instance of swage movement should be reported to the Factory.
Major airframe tubes:
1) Straightness
– maximum tolerance Length/600, for leading edge outers, Length/500. Straightness is measured
from the point of maximum bend to a straight line running from each end of the tube. If both tubes have a
perceptible set, leading edge outers should be replaced in pairs. Leading edges must NEVER be turned round or
straightened.
2) No Fretting or corrosion, e.g. between sleeves.
3) No dents deeper than 0.2mm
4) Any scoring up to 0.1mm deep should be blended out, finishing with 1200 grit abrasive paper and coating in
clear lacquer.
5) No visible cracks are permissible.
Hang Bracket and control frame top knuckles:
The hang bracket must be inspected for cracks, distortion and wear, particularly at the Hangbolt hole.
Maximum diameter for the hangbolt hole is 10.7mm.
The hangbolt is NOT intended to rotate in the bracket, and should be tightened securely by hand.
The control frame pivot bolts must be secure yet allow easy movement. The control frame uprights must be
straight, the tube ends must not be distorted and the end fittings and rivets must be secure.