Taxiing; Ground Check - Piper WARRIOR III PA-28-161 Pilot Operating Handbook

SECTION 4
NORMAL PROCEDURES
Do not operate the engine at high rpm when running up or taxiing over
ground containing loose stones, gravel or any loose material that may cause
damage to the propeller blades.

4.17 TAXIING

Before attempting to taxi the airplane, ground personnel should be
instructed and approved by a qualified person authorized by the owner.
Ascertain that the propeller back blast and taxi areas are clear.
Power should be applied slowly to start the taxi roll. Taxi a few feet
forward and apply the brakes to determine their effectiveness. While taxiing,
make slight turns to ascertain the effectiveness of the steering.
Observe wing clearances when taxiing near buildings or other stationary
objects. If possible, station an observer outside the airplane.
Avoid holes and ruts when taxiing over uneven ground.
Do not operate the engine at high rpm when running up or taxiing over
ground containing loose stones, gravel or any loose material that may cause
damage to the propeller blades.

4.19 GROUND CHECK

The magnetos should be checked at 2000 RPM. Drop off on either
magneto should not exceed 175 RPM and the difference between the
magnetos should not exceed 50 RPM. Operation on one magneto should
not exceed 10 seconds.
Check the vacuum gauge; the indicator should read 4.8" to 5.2" Hg at 2000
RPM.
Check the annunciator panel lights with the press-to-test button.
Carburetor heat should also be checked prior to takeoff to be sure the
control is operating properly and to clean any ice which may have formed
during taxiing. Avoid prolonged ground operation with carburetor heat ON
as the air is unfiltered.
REPORT: VB-1565
4-18
PIPER AIRCRAFT CORPORATION
PA-28-161 WARRIOR III
ISSUED: JULY 1, 1994