Grob ASTIR CS 77 User Manual

EXAMINATION FOR THE INCREASE OF SERVICE LIFE
1. General information
The results of fatigue tests on wingspar sections have demonstrated that the service
life of GRP gliders and powered sailplanes may
be extended to 6000 hours, if for each
individual aircraft the airworthiness
is demonstrated according to a special multi-step
inspection program, particularly with regard to the service life.
2. Periods
When the glider has reached a service time of 3000 hours, an inspection must be
carried out in accordance with the inspection program mentioned under section 3. If the
results of this inspection are positive and/or if any defects found have been duly
repaired, the service time of the glider
is extended by another 1000 hours to a total of
4000 hours (Stage 1 ).
The above inspection must
be repeated when the glider has reached a service time of
4000 hours. If the results of this inspection are positive and/or if any defects found have
been duly repaired, the service time of the glider
is extended by another 1000 hours to
a total of
5000 hours (Stage 2) .
When the glider has reached a service time of
5000 hours, the above inspection must
be repeated. If the results of this inspection are positive and/or if any defects found
have been duly repaired, the service time of the glider
is extended by another 1000
hours to a total of 6000 hours (Stage 3) .
For service times exceeding
6000 hours, procedures have yet to be laid down.
3. The Inspection
For each inspection obtain the latest information from the manufacturer. The test
program
is updated to incorporate information obtained from previously completed
inspections.
4. The Inspector
The inspection must only be done by the manufacturer or by a licensed repair station or
inspector.
5. Reporting
The results of the inspections have to be recorded in an inspection test report wherein
comments are required for each inspection instruction.
If the inspections are done
outside the manufacturer's facilities, a copy of the records must
be sent to the
manufacturer for his evaluation and information.
7. The Annual Inspection
This service life inspection program does not affect the annual inspection.
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Grob ASTIR CS 77 Specifications

General

Brand	Grob
Model	ASTIR CS 77
Category	Aircrafts
Language	English