Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 140

PIPER AIRCRAFT CORPORATION
PA-28R-201, ARROW
SECTION 6
WEIGHT AND BALANCE
6.3
AIRPLANE WEIGHING PROCEDURE (continued)
CAUTION
Whenever the fuel system is completely drained
and fuel is replenished it will be necessary to run
the engines for a minimum of 3 minutes at 1000
rpm on each tank to insure no air exists in the
fuel supply lines.
(4) Fill with oil to full capacity.
(5) Place pilot and copilot seats in fourth (4th) notch, aft of
forward position. Put flaps in the fully retracted position
and all control surfaces in the neutral position. Tow bar
should be in the proper location and all entrance and
baggage doors closed.
(6) Weigh the airplane inside a closed building to prevent
errors in scale readings due to wind.
(b) Leveling
(I) With airplane on scales, block main gear oleo pistons in the
fully extended position.
(2) Level airplane (refer to Figure 6-3) deflating nose wheel
tire, to center bubble on level.
(c) Weighing - Airplane Basic Empty Weight
(1)
With the airplane level and brakes released, record the
weight shown on each scale. Deduct the tare, if any, from
each reading.
ISSUED: SEPTEMBER 15. 1988 REPORT: VB-1365
6-3