air noise in the cabin from around the
perimeter of doors and windows.
Check for undue noise in the cabin
due to vibrating and rattling articles or
oil canning of skins.
*11. Pilots alternate static air source -
Check as follows:
(a) Maintain level flight and note air-
speed and altitude.
(b) Pilots alternate static air source
switch - ALTERNATE. Verify
that airspeed indicator, altimeter,
and vertical speed indicator read-
(c) Pilots alternate static air source
- NORMAL. Airspeed
indicator, altimeter, and vertical
speed indicator indications
should return to their original
*12. Propeller synchrophaser - Check cap-
turing ability of the synchrophaser by
establishing a small out of synchroni-
zation condition, then turning the syn-
chrophaser on. Verify that synchroni-
zation is established and held within a
13. Maximum ITT/N, availability - Per-
form as required (Chapter 4).
14. Speed performance at maximum
cruise power - Perform as required
15. Engine performance at maximum con-
tinuous power - Perform as required