North Wing S-LSA Maintenance Manual
Model: Scout 912
Version 3.2
Release date 04-16-2014
Page 9
WARNING
THE INFORMATION IN THIS MANUAL NEEDS TO BE FOLLOWED, AND IT IS NOT
ACCEPTABLE TO MAKE CHANGES TO THE MATERIALS AND OR PHYSICAL
FEATURES OF THIS AIRCRAFT. IN PARTICULAR THE GRADES OF BOLTS THAT
HAVE BEEN UTILIZED IN THE MANUFACTURE OF THIS AIRCRAFT ARE
CRITICAL FOR ITS CONTINUING AIRWORTHINESS. NEVER REPLACE BOLTS
WITH ANY OTHER SIZE OR GRADE. GRADE 8 BOLTS ARE NOT
INTERCHANGEABLE WITH AIRCRAFT (AN) GRADE BOLTS. THE FATIGUE
CHARACTERISTICS OF AIRCRAFT GRADE BOLTS ARE SUPERIOR TO OTHER
BOLTS AND ALLOW LONGER SAFE SERVICE LIFE UNDER CYCLIC LOADS LIKE
THOSE EXPERIENCED IN AIRCRAFT. THE LENGTH OF BOLT IS IMPORTANT. IF A
SHORTER BOLT IS USED THE THREAD MAY ENCROACH ON THE LOAD BEARING
AREA, WHICH INCREASES THE STRESSES EXPERIENCED BY IT.
1.3 Tooling and Materials
In general, all maintenance described herein is capable of being done with standard mechanics
tools. However, since the Rotax engine is built in Austria, a set of metric open end, box,
sockets, and hex wrenches may be needed. The only tools that might be considered somewhat
special or unusual needed for the maintenance described in this manual are the following:
•
Low range torque wrench capable of up to 230 inch pounds of torque with both metric
and English size sockets
•
High range torque wrench capable of up to 50 foot-pounds of torque with both metric
and English size sockets
•
Bettsometer for testing wing fabric strength
•
Syringe with capacity of at least 4 ounces for bleeding the hydraulic brakes
•
Propeller pitch gauge
•
Safety wire twisting pliers and safety wire
•
Air pump
•
Lubricants and other liquid/paste materials required by Rotax
•
Loctite 243
•
Anti-seize lubricant
•
Plastic wire ties of various sizes
•
Oil resistant paste thread sealer (teflon tape should never be used on fuel or oil fittings)
Other items may be required that are not on this list.
1.4 Service Difficulties and Errors
Any service difficulties, errors in this manual, or product defects should be reported to North
Wing via the web site, fax, or telephone. Corrections will be made as appropriate and reported
on the North Wing UUM Inc. web site.