Windshield damage and Airline procedures
Join Date: Jan 2002
Location: Brisbane, Australia
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For our B737-700 IGW airplanes....
With either window 1, 2 or 3 outer panes cracked or shattered -
Continue normal operation.
But I wouldn't recommend operating the windshield wipers on that side for the main windows!
Cheers...FD...
Ooops, sorry....just read 'probationer',
Windows #1 and #2 are the main front windshields for each of the pilots.
Windows #3 are the big (both) sides (flight deck) windows.
cheers...
With either window 1, 2 or 3 outer panes cracked or shattered -
Continue normal operation.
But I wouldn't recommend operating the windshield wipers on that side for the main windows!
Cheers...FD...
Ooops, sorry....just read 'probationer',
Windows #1 and #2 are the main front windshields for each of the pilots.
Windows #3 are the big (both) sides (flight deck) windows.
cheers...
Join Date: Mar 2000
Location: Arizona USA
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Your outer shield is cracked by a bird...Would you continue as planned?
Type L1011.
However, if visibily is degraded to a significant extent, then normally the window is replaced at the next station.
Join Date: Mar 2000
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However - As pilots, how certain can you be that it is just the outer pane etc.
No restrictions...pressurisation, speed, etc.
None.
Join Date: May 2008
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The outer glass is basically only to run windshield wipers and to give a scratchproof surface - it depends on manufacturer but can be as little as 1/8 of an inch thick. On 747 the prucedure is to remove the cracked outer glass before departure.
Join Date: Oct 2009
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As pilots, how certain can you be that it is just the outer pane etc.
Simples!
Join Date: Feb 2010
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Depends on type i guess. Some aircraft might have a level + pressure differential limit. If level restricted- fuel consideration.
The next consideration would be the sector- if u departing from base they might want u to go back and not AOG it out of base.
The next consideration would be the sector- if u departing from base they might want u to go back and not AOG it out of base.
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The outer glass is basically only to run windshield wipers and to give a scratchproof surface - it depends on manufacturer but can be as little as 1/8 of an inch thick.
On 747 the procedure is to remove the cracked outer glass before departure.
On 747 the procedure is to remove the cracked outer glass before departure.
If any or all of these defects presented after a bird strike in flight, what would be the action?
Continue/return to an airport where these defects would cause the least issues? e.g avoid ice/rain conditions if avail.
Or fly on as 1 windscreen is serviceable ?
Hmmm let's see. As far as I can recall I have had 4-5 outer pane failures in 3 different types of aircraft. None precluded me from continuing the flight to destination, however on 2 occasions I was leaving home base, and Maintenance wanted me back exactly for the reason that they had a window, whereas availability at outstation was either questionable or definitely non-existent. On the other occasions landed at destination and gave the airplane to Maintenance.
Non-events, except for a slightly extended layover at an outstation a couple of times.
Non-events, except for a slightly extended layover at an outstation a couple of times.
Join Date: Sep 2006
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The outer pane on my aircraft (757/767) is not structural.
Cracking of any or all glass plies or delamination between any plies does
not affect the pressurization capability of the window.
In the absence of an air leak or window deformation, no airplane or cabin altitude change is necessary.
A window is deformed if it bulges or bows significantly.
Cracking of any or all glass plies or delamination between any plies does
not affect the pressurization capability of the window.
In the absence of an air leak or window deformation, no airplane or cabin altitude change is necessary.
A window is deformed if it bulges or bows significantly.
I've had a couple of the windows fail in flight on the 73. The QRH procedure has changed a few times over the past couple of years, generally becoming more conservative. Both of these failures (as are most) were due to arcing of the window heat. If the window failed due to a physical strike, then the integrity of the rest of the window must be called to question.
If the strike occurred in the climb, I would return. In the descent, I would land at destination. A bird strike is pretty unlikely in the cruise!
If the strike occurred in the climb, I would return. In the descent, I would land at destination. A bird strike is pretty unlikely in the cruise!
