Acrylic Windshield (Co-Pilot’s Side) Inspection - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

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(e) Peel Chips
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(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.
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B. Acrylic Windshield (Co-Pilot's Side) Inspection
CAUTION: PRESSURIZED FLIGHT PROHIBITED WITH CRACKED OR CRAZED WINDSHIELD.
The co-pilot's windshield is two-ply laminated stretched acrylic 0.325 inch thick.
(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.
(b) Crazing.
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(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.
(d) Scratches.
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Apr 15/07
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
Replace windshield if any of the following condition are noted:
a
Delamination exceeds allowable limts.
b Area of vision required for safe operation is affected.
c Windshield heat system inoperative.
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.
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.
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 retrainer strip.
Distortion may not be so severe that it restricts vision or diverts runway lines or
section lines more than 45°.
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).
Crazing in the windshield is critical.
Determine depth of craze using a calibrated depth gauge or scale (see Figure 1).
A craze of 0.065 inch (1.651 mm) depth is cause for immediate replacement. A craze
of 0.032 inch (0.813 mm) depth is cause for replacement at the earliest opportunity.
Crazing in any portion of the windshield requires replacement.
Limits:
1.5 inch (38.1 mm) long
0.032 inch (0.813 mm) deep
0.2 inch (5.080 mm) wide
0.25 in 2 (1.613 cm 2 ) total area
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