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

Page: 1236 / 1956

PAGE 4
Feb 28/07
6J4
56-00-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
3 Replace windshield if any of the following condition are noted:
a Delamination exceeds allowable limits.
b Area of vision required for safe operation is affected.
c Windshield heat system inoperative.
(e) Peel Chips.
1 Delaminated areas characterized by irregular or jagged boundaries indicate uneven
separation of the vinyl and glass. This condition may cause the vinyl to pull chips
from the inner glass ply, resulting in failure of the glass ply. Conduct periodic
inspections to determine if the damage is progressive or if chipping of the inner glass
ply is present.
2 Replace windshield if any of the following condition are noted:
a Evidence of chipping of inner glass ply.
b Area of vision required for safe operation is affected.
c Windshield heat system inoperative.
(f) Mark-Off of such low intensity that vision quality is not impaired and that is not visible
when looking through the windshield is acceptable.
(g) Distortion.
1 A moderate amount of distortion is acceptable along the lower portion of the
windshield if no more than 1.5 inches (3.81 cm) above the windshield retainer strip.
2 Distortion may not be so severe that it restricts vision or diverts runway lines or
section lines more than 45°.
3 Slight horizontal distortion is acceptable, if: there are no more than two lines; they do
not occupy more than 25 percent of the windshield area, and; they are separated by
a minimum of six inches (15.24 cm).
B. Acrylic Windshield (Co-Pilot’s Side) Inspection
CAUTION: PRESSURIZED FLIGHT PROHIBITED WITH CRACKED OR CRAZED WINDSHIELD.
The co-pilot’s windshield is formed from 0.312 inch thick acrylic.
(1) Critical Area Inspection. The area of the acrylic windshield used for taxiing, takeoff, climb,
cruise, and landing.
(a) Cracking in the windshield is critical and cause for immediate replacement. Inspect per
Crack Inspection - Acrylic Windows and Windshields, below.
(b) Crazing.
1 Crazing in the windshield is critical.
2 Determine depth of craze using a calibrated depth gauge or scale (see Figure 1).
3 A craze of 0.062 inch (1.575 mm) depth is cause for immediate replacement. A craze
of 0.031 inch (0.787 mm) depth is cause for replacement at the earliest opportunity.
4 Crazing in any portion of the windshield requires replacement.
(c) Haze or foggy appearance is not acceptable if the amount of haze/fog causes an
obstruction of vision in the area used for operation of the aircraft.