MOONEY
M20TN - MODEL TYPE-S
SECTION VIII
HANDLING, SERVICE AND MAINTENANCE
8 -- 9
AIRPLANE FLIGHT MANUAL
ORIGINAL ISSUE -- 04-02-2008
CAUTION
Alternator and voltage regulator operate only as a one-polarity system. Be sure
the polarity is correct when connecting a charger or booster battery.
If corrosion is present, flush battery, shelf and mounting area with a solution of baking soda and
water. Keep cable connections clean and tightly fastened.
HYDRAULIC BRAKE RESERVOIR SYSTEM
The brake system hydraulic reservoir is located on the tailcone bulkhead, forward of the avionics
components. To service, remove the left side tailcone access panel and check fluid level every
50 HOURS of operation. Fluid level should be no higher than two (2) inches (5 cm) below filler
cap. Use only hydraulic fluid (Red) conforming to specification MIL-H-5606. DO NOT FILL reser-
voir while parking brake is set.
MAINTENANCE
ENGINE PERFORMANCE CHECKS
When the aircraft leaves the factory the TSIO-550-G( ) engine has been properly tuned and will
perform at optimum efficiency. To insure that the engine is continuing to perform properly certain
maintenance action should be performed during the 100 HOUR or ANNUAL inspection or when-
ever it is suspected that engine performance is not correct.
Refer to M20TN SERVICE AND MAINTENANCE MANUAL or Continental Motors, Inc. mainte-
nance manuals for specific maintenance actions to adjust engine, if necessary.
PROPELLER CARE
The high stresses to which propeller blades are subjected makes their careful inspection and
maintenance vitally important. Check blades for nicks, cracks or indications of other damage
before each flight. Nicks tend to cause high stress concentrations in the blades which, if ignored,
may result in cracks. It is very important that all nicks and scratches be repaired prior to flight. It is
not unusual for propeller blades to have some end play or fore and aft movement as a result of
manufacturing tolerances in the parts. This has no adverse effect on propeller performance or
operation. With the first turn, centrifugal force firmly seats the blades, rigidly and positively
against the retention bearing in the propeller hub. Routine propeller servicing is described in the
latest revision of Hartzell Manual 115N (Propeller Owner’s Manual).
Pre-flight inspection of the propeller blades should include, in addition to the foregoing, an occa-
sional wiping with an cloth soaked in kerosene. NEVER USE AN ALKALINE CLEANER ON THE
BLADES.
Your Mooney Service Center will answer any questions you may have concerning blade repair
and inspection.
EXTERIOR CARE
As with any paint applied to a metal surface, an initial curing period is necessary for developing
the desired qualities of durability and appearance. Therefore, DO NOT APPLY WAX TO THE
NEW AIRCRAFT EXTERIOR UNTIL TWO OR THREE MONTHS AFTER DELIVERY. Wax sub-
stances will seal paint from the air and prevent curing. Wash the exterior to prevent dirt from
working into the curing paint. Hold buffing to a minimum until curing is complete and there is no
danger of disturbing the undercoat.
--CAUTION--
Before washing the exterior, be certain the brake discs are covered, a pitot cover
is in place, and all static-air buttons are masked off.
Revision B -- 11-21-2014
