Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 1242 / 1956

PAGE 10
Feb 28/07
6J10
56-00-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(c) If a crack less than 0.300 inch (7.62mm) is left unrepaired, reinspect the window each
additional 25 hours of aircraft operation.
(d) A maximum of three bolt holes with cracks less that 0.299 inch (7.59mm) long are
acceptable in any one window pane before that window pane must be replaced.
(e) Replace window pane if a single crack or combination of adjacent facing cracks exceed
0.300 inch (7.62mm) in length.
(5) Chips, Scratches, and Crazing Limitations.
CAUTION: DAMAGE LIMITS AND REPAIRS STATED HEREIN MUST BE APPLIED
CONSERVATIVELY. REWORK OF MULTIPLE CHIPS OR SCRATCHES SHOULD
NOT BE ATTEMPTED IN ANY CASE WHERE, WHEN FINISHED, A LINEAR
PATTERN WILL HAVE BEEN CREATED.
(a) Scratches in acrylic windows and the co-pilot’s windshield may be reworked (see Window
/ Windshield Repair / Rework, below) as follows:
1 Co-pilot’s windshield - scratch is less than 0.030 inch (0.762 mm) deep and
windshield is a minimum of 0.279 inch (7.087 mm) thick after rework.
2 Cockpit side windows - scratch is less than 0.025 inch (0.635 mm) deep and window
is a minimum of 0.225 inch (5.715 mm) thick after rework.
3 Cabin side windows - scratch is less than 0.021 inch (0.533 mm) deep and window is
a minimum of 0.189 inch (4.800 mm) thick after rework.
4 No vision distortions in critical and semi-critical areas as a result of rework.
(b) Replace acrylic windows with scratches that cannot be reworked in accordance with these
standards.
F. Window / Windshield Repair / Rework Procedure (Acrylic Windows / Co-Pilot’s Windshield Only).
The following methods should be used for repairs:
CAUTION: ANY ACRYLIC WINDOW WHICH MAY HAVE BEEN DAMAGED BY PAINT THINNER,
PAINT REMOVER OR OTHER SOFTENING AGENT MUST BE REPLACED. NO
REPAIR IS PERMITTED FOR THIS TYPE OF DAMAGE.
CAUTION: DAMAGE LIMITS AND REPAIRS STATED HEREIN MUST BE APPLIED
CONSERVATIVELY. REWORK OF MULTIPLE CHIPS OR SCRATCHES SHOULD
NOT BE ATTEMPTED IN ANY CASE WHERE, WHEN FINISHED, A LINEAR
PATTERN WILL HAVE BEEN CREATED.
Rework the damaged area to the depth of the damage, approximately twice the length and three
times the width, removing all sharp edges.
(1) Areas with small scratches:
(a) Clean the window, using generous amounts of water and a mild detergent.
(b) Polish the window with an approved compound and soft cloth.
(c) Clean and wax the polished area.
(2) Areas with large scratches, gouges, and nicks: Areas with damages exceeding .003 of an inch
depth or those with less than .003 of an inch in depth, having sharp edges which cause
hanging of fingernail should be locally rounded out or buffed.
(a) Clean the window using generous amounts of water and a mild detergent.
(b) Use a scratch removal kit, such as the type supplied by Micro-Surface Finishing Products
Inc., P.O. Box 456, Wilton, Iowa, to remove the defective area, blend and buff.
(c) Using 400A wet or dry abrasive paper wrapped around a smooth rubber block and
generous amounts of water, lightly sand over and around the defected area in a circular
motion, extending in a diameter equal to two or three times the defected area.