If I may expound a little on James' post:
APPROACHING STORM:
1...Disengage the autopilot.
2...Reduce airspeed as required.
3...Mixture controls - AUTO-RICH
4...Propellor Controls - 2350 RPM
5...Pitot heater switch - ON
6...Carburetor heat - As required
7...Throttles - As required
8...Check the power source and gyro-stabilized instrument settings.
9...Safety belts and shoulder harnesses - Tightened
10...Turn off any radio equipment rendered useless by ststic.
11...Turn the cockpit lights full bright to minimize the blinding effect of lightning.
CAUTION:
Do not lower the flaps or gear, since structural damage may occur.
Last edited by pigboat; 14th Oct 2012 at 13:52.