czech sport aircraft SportCruiser Service Bulletin

SERVICE
BULLETIN
Czech Sport Aircraft a.s.
Na Záhonech 212,
686 04 Kunovice
Czech Republic
office@czechsportaircraft.com
No.: SB-SC-055
Date: 2018-08-20
Rev.: -
Page: 1 of 25
Date: -
MODEL
AFFECTED:
SportCruiser
SUBJECT:
Installation of Fuel return line
AIRCRAFT
AFFECTED:
All SportCruiser aircraft up to S/N 09SC273 inclusive without fuel return line
installed, as applicable.
COMPLIANCE:
Apply this Service Bulletin upon the next scheduled annual inspection or till
May 31, 2019, at the latest.
DESCRIPTION:
This Service Bulletin follows the Safety Alert / Safety Directive No. SA-SC-006 dated October 16, 2017.
This Service Bulletin contains instructions for mandatory fuel return line installation that is required to be
incorporated within the aircraft fuel system design as per the Rotax Installation Manual 912 Series, the latest
revision, Chapter 73-00-00, Fuel system. Application of this Service Bulletin is mandatory for all SportCruiser
aircraft without the fuel return line installed. For checking the fuel return line installation on the respective
aircraft, refer to the SA-SC-006. The Service Alert No. SA-SC-006 remains in effect and mandatory for all
respective SportCruiser aircraft without fuel return line installed until this Service Bulletin accomplishment.
AUTHORISATION TO PERFORM:
Repairman (LS-M) or Mechanic (A&P), Aircraft Maintenance Organization
REASON:
Implementation of the fuel return line is required by the Rotax Company. The purpose of the fuel return line
is to bleed off any vapors that may form within the fuel system that could cause vapor lock resulting in
a possible loss of engine power.
MANPOWER:
Approximately 30 manhours.
SPECIAL TOOLS AND TEST EQUIPMENT:
• Direct drilling machine (chuck up to a diameter of 10 mm)
• Corner drilling machine (chuck up to a diameter of 10 mm)
• Riveting pliers with a rotary head for pop rivets
• Pliers for cleco fasteners
• Drill bit, diameter of 2.4 mm ( .094 inch)
• Drill bit, diameter of 4.1 mm ( .161 inch)
• Drill bit, diameter of 6 mm ( .240 inch)
• Drill bit, diameter of 9 mm ( .360 inch)
• Step drill bit 3/4 inch or reamer 3/4 inch
• Cleco fasteners, diameter of 2.4 mm (10 pcs)
• Cleco fasteners, diameter of 4 mm (4 pcs)
• Hot air gun
• Vacuum cleaner designed for working in an explosive environment
• Portable light designed for working in an explosive environment
• Telescopic mirror
• Test equipment for the test of fuel system installation leakage
• Test equipment for the test of pitot-static system leakage

czech sport aircraft SportCruiser Specifications

General

Model	SportCruiser
Seating Capacity	2
Maximum Takeoff Weight	600 kg (1, 323 lb)
Engine	Rotax 912ULS
Manufacturer	Czech Sport Aircraft
Type	Light Sport Aircraft
Stall Speed	40 mph, 35 kn