Thrush Aircraft S2R-R1340 Maintenance Manual page 224

The Airworthiness Limitations section is FAA approved and specifies maintenance required
under §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative
program has been FAA approved.
The life limited parts on the airframe are listed in the chart below and must be replaced at the
flight hours shown.
PART DESCRIPTION
Spar Cap, Left hand
lower
Spar Cap, Right hand
lower
Tail Landing Gear Spring
The lower spar caps, P/N 20207-015 and 20207-016, must be inspected periodically as
described below. These inspections must first be made when the wings have a total time in
service of 6,400 hours. The repetitive inspection interval thereafter depends on the means
by which the previous inspection was accomplished.
• If magnetic particle inspection is used, inspections must be repeated every 450 hours
time in service.
• If eddy current inspection is used, inspections must be repeated every 625 hours time
in service.
Remove the lower spar splice block bolts and spar cap splice blocks as follows:
o Park the airplane in an enclosed hanger, with the door shut, and secure the
airplane for maintenance.
o Disconnect the battery and external power sources.
o Gain access to the wing spar splice area by removing the wing root fairings and
the necessary airplane side and belly panels. Remove spray pump and spray
pump mounting brackets.
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THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
AIRWORTHINESS LIMITATIONS
STRUCTURAL LIMITATIONS
PART NUMBER
20207-015
20207-016
5079-1
MANDATORY INSPECTIONS
LOWER SPAR CAP PERIODIC INSPECTION
LOWER SPLICE BLOCK REMOVAL
LIFE LIMIT
28,800 hours
28,800 hours
5,000 hours
Effective: 1/1/08