DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE:
CHAPTERPAGE 57
MAINTENANCE MANUAL STEMME S12
5.2 PREFLIGHT INSPECTIONS
Procedures for rigging, fueling, daily inspection and pre-ight inspection are dened in the S12
Aircraft Flight Manual.
5.2.1 RUBBER HOSE AND CLAMP INTEGRITY
To ensure that liquids remain safely contained during engine operation and during engine-o
ight, the outward appearance and surface condition of all rubber hoses must be visually and
manually inspected.
The scheduled maintenance, dened in chapter 5 is suitable to detect leaks, cracks, swelling,
inexibility, loose ends and signs of excessive wear or aging.
Depending upon environmental and operating conditions, elastomeric parts like rubber hoses can
age more rapidly than expected.
Fuel system pressure tests are required with in Daily Inspection as dened in Chapter 4. of the
S12 Aircraft Flight Manual. Pressure test the fuel system before rst engine start each day and after
maintenance. Transfer pumps respond to draining of the feeder tank, refer to section 7.4.6.2
In addition, the clamped connections of each rubber hose must be visually and manually inspect-
ed before rst engine operation after maintenance to conrm that no hose can be pulled loose
from its respective ttings.
5.3 PERIODIC INSPECTIONS
The intervals for general maintenance and inspections depend upon operating conditions,
climate, storage conditions, and environmental factors. More frequent inspection and mainte-
nance would be prudent under sub-normal conditions; however, the types and intervals of the
minimum required inspections and scheduled maintenance for the S12 are those mandated by
applicable national requirements and are dened below in section 5.
Depending on applicable national regulations certied aircraft may also be required to be
inspected and maintained more frequently than specied in this chapter depending on the mode
of operation.
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