The problem wasn't the serpentine crack slithering its way up the windshield of my 2012 Honda CRV. The problem was getting it reliably replaced in the slippery world of auto glass service.
CLICKING NOISE WITH AC ON BEHIND GLOVE COMPARTMENT? - wITH AC ON CLICKING NOISE.WHEN USE INSIDE AIR STOPS? (by the windshield) that controls the defroster? My 2013 ltz is doing the same clicking noise but my battery keeps dying. Is their a certain actuator i should be looking for?? Mark helpful.
Calls to a half dozen of the nearest Toronto shops returned quotes as low as $120 and as high as $760. When asked about the wild variations, the manager at a national chain outlet said $760 was the price if claiming through auto insurance. The consumer price, he said, was about half as much (that's another story). At $120, he said the concern would be subpar Chinese-made replacement glass. And that was a concern, because windshields don't just keep the elements out. They're an integral part of what makes a car safer, giving support to the roof and ensuring airbags are properly deployed. If the glass comes out during an accident, the roof could collapse, and the inflated airbags won't stay properly positioned to protect the driver and passengers.
Still bewildered, I called a trusted auto-body shop and it recommended Steve Zorbakis, who runs. He has 26 years of experience doing only auto glass, and is the replacement specialist of choice for many of Toronto's Honda dealers.
Chinese-made windshields are fine now, he says. They have come a long way since the first shoddy ones came on the market years ago, and are now the norm in the industry. The real concern, Zorbakis said, is other materials used by installers and the skills they apply. The cheapest companies may offer a lifetime guarantee, but they often aren't in business when problems arise down the road.
Windshield shops close frequently and open under new names, he said, something that seemed likely as some of the shops I called had out-of-service phone lines and others were using different names than the ones listed with their numbers. It's a free-for-all because there's a lack of regulation.
The federal government regulates the safety of new cars, but once a vehicle leaves the dealer's lot, it's the jurisdiction of the province. Ontario regulations require the use of safety certified replacement glass, but there's nothing regulating how safely it's installed. And industry efforts to self-regulate have always floundered.
Dirty work, done dirt cheap So, to find out just how dodgy things are, I decided to get my windshield replaced by one of the cheapest shops. Zorbakis agreed to inspect the resulting work and then fix anything done wrong. 'If they do a good job, I'll be happy to tell you so,' Zorbakis said, 'And at that price, I'll hire the guys to do work for me.' The discount shop looked promising. Two installers started work on the car as soon as I arrived and they looked like they knew what they were doing from what I could see through the waiting room window to the garage. Less than an hour later, they sent me on my way with a new windshield. Then Zorbakis took a look.
It wasn't the worst job he'd ever seen, but it was close. The results Here's what he found before replacing the windshield again himself and fixing other parts broken in the discount installation. He costs more than the discount guys, but less than the national chain. I risked having a windshield that could fly out in a crash because I was allowed to drive away too soon after the installation. The installers had used cheap adhesive that requires a minimum eight hours of bonding time in optimal conditions before the car can be safely driven.
Credible installers use an adhesive that costs twice as much, but still requires at least three hours before being driven. And they wouldn't allow a car to be driven before that time.
The windshield was installed too low, or had slid too low because I was allowed to drive away too soon. As a result, water risked getting under the top, and popping the seal or cracking the glass when it froze and expanded in winter. At the bottom, the windshield rested on the hood hinges, and was likely to crack from any jarring blow, like going over a bad pothole. The adhesive was too thick in some places, and too thin in others, which meant the glass was sitting on the metal frame in some spots and wasn't secured, even if it had set and cured properly. The windshield frame risked rusting out in places where primer wasn't used properly to cover raw metal exposed by removing the cracked windshield. The discount installers had also cracked six of the eight clips that hold the windshield mouldings in place.
Instead of offering to replace the broken clips, they had covered it up by gluing the mouldings where the clips had broken, using the windshield adhesive. The mouldings around the windshield wipers hadn't been replaced properly. How to get a windshield replaced reliably. Use an installer recommended by someone you trust. Ask a favoured mechanic, auto-body shop, dealership or other automotive professional you rely upon. Ask how long the installation company has been in business under the same name, and avoid new operations.
Ask how long you have to wait before driving away, and don’t use anyone who allows you to drive sooner than three hours after the install. Installers with a shop aren’t necessarily better than a mobile installer with a van. Steve Zorbakis, of Budget Auto Glass, prefers to do mobile installations, but uses a shop when the weather doesn’t allow working outdoors. Send your automotive questions to. Welcome to The Globe and Mail’s comment community. This is a space where subscribers can engage with each other and Globe staff.
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Aero 17 - Flight Deck Windshields windshields with those of improved design. The result will be fewer system interruptions caused by unexpected windshield damage. Unscheduled replacement of flight deck windshields (often referred to as cockpit windows or windscreens) can result in a significant cost to airlines and can cause delays in flight schedules. To improve the service life of the windshields in their fleets, airlines should consider the following steps:.
1. DETERMINE WINDSHIELD AGE AND DESIGN To determine the age and design configuration of a flight deck windshield, an airline must know the windshield part number, supplier name, and date of manufacture. Most windshield assemblies for Boeing-designed airplanes have a part number decal, or tag, located on the inboard side along the perimeter near the top of the windshield assembly. The decal has two numbers: the Boeing part number and the manufacturing serial number of the windshield supplier.
For example, a decal on a 737 no. 1 windshield manufactured by PPG Aerospace, Pittsburgh, Pennsylvania, displays the numbers P/N 5- and S/N. Airlines can identify the windshield design configuration and flight deck location by looking up the Boeing part number in one of several Boeing information sources the Airplane Illustrated Parts Catalog (AIPC), engineering data, or the Boeing Part Analysis and Requirements Tracking (PART) Page. (All these sources are available on the World Wide Web at.) In this example, the window is the pilots no. 1 left-hand windshield. The supplier manufacturing serial number provides information about when and where the windshield was manufactured.
For the number given in the example, S/N, 00 identifies the year of manufacture (2000); 293 is the manufacturing day of the year; H indicates where the windshield was manufactured (Huntsville, Alabama); and 1398 is the supplier serial number of the windshield. ( Note: Some windshield suppliers provide the date of manufacture in a separate field on the decal rather than including it in the serial number.) Typical supplier codes stamped on the part number decal are F or PPG for PPG Aerospace; S for Swedlow, Pilkington Aerospace, Garden Grove, California; SS for Sierracin/Sylmar, Sylmar, California; and XXX or PA for Triplex, Pilkington Aerospace. Markings on Douglas-designed airplanes, located along the top of the windshield, include the manufacturers name or trade name, Douglas part number, drawing change letter, and serial number. ( Note: Acrylic windows on Boeing- and Douglas-designed airplanes do not necessarily have decals. The transparent material often is marked directly by pin-stamping, grit-blasting, or laser-etching.) In addition to measuring the age of a flight deck windshield in years, the age also can be measured in flight-hours.
If the windshield is original equipment, the total flight-hours on the airplane a value commonly tracked by operators can be used to determine the age of the windshield in flight-hours. For a replacement windshield, operators should separately track the number of flight-hours on the airplane since the new windshield was installed. PREDICT WINDSHIELD SERVICE LIFE By establishing the age of the flight deck windshields in its fleet (in both years and flight-hours), an airline can compare its windshield fleet performance with Boeing data from reporting operators and make changes to improve service life and reduce unscheduled system interruptions. Summarizes the causes of system schedule interruptions for 737-300/-400/-500 airplanes for two 6-month periods ending December 2001.
Of the 30 items tracked by the Air Transport Association (ATA), windows (i.e., Chapter 56) were the 18th most significant cause of delay. Although ATA Chapter 56 covers all window-related delays, including those involving passenger cabin windows, it does provide an overall guideline for 737 flight deck windshields.
(Data on system schedule interruptions for all Boeing- and Douglas-designed airplanes are available on the web site under Fleet Reliability Statistics.) Boeing analysis of the 737 ATA Chapter 56 data revealed the following:. Flight deck windshields no. 1 (left and right) and no.
2 (left and right) significantly affected system schedule reliability. Flight deck windshields manufactured before November 1992 lasted approximately 6,000 flight-hours (4 years) of in-service use before replacement, compared with 20,000 to 30,000 flight-hours (811 years) for those manufactured after November 1992.
(The 737 analysis did not measure airplane utilization, which was not a meaningful factor because it was taken into account in the usage flight-hours measurement.). The most common problem with flight deck windshields is in-flight cracking of the outer ply. Scheduled inspection of windows is the most effective means to reduce system interruptions caused by unscheduled windshield removals. PROPERLY MAINTAIN AND REPAIR WINDSHIELDS Proper maintenance and repair of flight deck windshields entail identifying damage, performing maintenance and repairs, and replacing windshields during scheduled maintenance. Recommended maintenance intervals are defined in the maintenance planning data for each airplane model.
Airlines can identify windshield damage using data in the appropriate aircraft maintenance manual (AMM) for Boeing-designed airplanes or, in some cases, the structural repair manual (SRM) for Douglas-designed airplanes. The maintenance data in the AMM or SRM will help airlines determine whether a windshield should remain in service, be maintained or repaired in situ, or be removed from service. When windshield removal is warranted, an airline must determine whether the windshield can be repaired using the overhaul manual (OHM) or component maintenance manual (CMM). In some cases, airlines may contract with Boeing, windshield suppliers, or repair stations to return windshields to serviceable condition. Given the Boeing analysis of 737 data and reports from fleet operators, airlines should focus on seven maintenance and repair issues: in-flight cracking, scheduled visual inspections, power connectors, service bulletins and letters, window removal and repair, repair stations, and training.
In-flight cracking. The most common problem that airlines have with flight deck windows is in-flight cracking of the outer ply. Conditions that lead to cracking begin with moisture around the aerodynamic seal (also referred to as the aero seal, moisture seal, or hump seal). Moisture ingress eventually causes delamination, heat-coating problems, and arcing, which if not corrected lead to cracking of the outer ply. The aerodynamic seal around the perimeter of a window is subject to erosion by wind and rain.
Maintaining the aerodynamic seal in good condition is critical in preventing erosion and moisture ingress and improving the windshield service life. The recommended visual inspection of the aerodynamic seal for erosion, cuts, nicks, and overall condition and repair is discussed in the applicable sections of the AMM or SRM for each airplane model. Shows a typical repair diagram of the aerodynamic seal. Scheduled visual inspections. Scheduled visual inspections are the best way to check for window conditions that may require window removal. Cloudy areas at the upper aft corner of a window or window periphery in the interlayer indicate moisture ingress.
Burn marks, bubbles, and moisture stains also indicate that the window may reach an unserviceable condition in the future. Window conditions and damage are described in the appropriate sections of the AMM or SRM for applicable Boeing- and Douglas-designed airplanes. Power connectors. Airlines should ensure that the power connections are tight and sealed properly to help prevent arcing.
Typical information on maintenance procedures can be found in the AMM or SRM. Service bulletins and letters. Each airline should review all applicable Boeing-, Douglas-, and supplier-issued service bulletins, service letters, and similar advisories to evaluate the potential effects of windshield-related issues on its fleet. For example, Boeing service bulletin 7 (Sept. 2, 1999) recommends replacement of windshields on certain models if they do not pass a dielectric leak check.
Replacement helps prevent electrical arcing and reduces system schedule interruptions. Window removal and repair.
Once an airline has removed a windshield from service, the windshield can be scrapped; repaired as directed in the applicable OHM or CMM; or returned to Boeing, the supplier, or the repair station for repair. Boeing-recommended overhaul procedures are published in the OHM or CMM for the appropriate windows.
In general, these procedures describe disassembly of the window frame and any attached mechanism but do not address disassembly of the window transparency itself. In most cases, the 707, 727, and 737 windshields are structurally and functionally interchangeable. This is important when an airline is managing a fleet with various airplane models. Other Boeing- and Douglas-designed airplane windshields also are interchangeable within models and sometimes across families. The AIPC can be consulted to help determine interchangeability for each applicable model. Repair stations. Repair stations are approved by the U.S.
Federal Aviation Administration or other appropriate regulatory agency. Stations include Boeing, Boeing-approved suppliers, and original window manufacturers. Airlines are encouraged to use supplier-provided training aids, which include color illustrations that help in the identification of damage requiring window removal. Airlines also should consider training select maintenance personnel in flight deck windshield repair and sending them to industry-related conferences to promote better understanding of windshields. REPLACE UNSERVICEABLE WINDSHIELDS WITH THOSE OF IMPROVED DESIGN Replacing damaged, unserviceable windshields with windshields of improved design helps airlines take advantage of the best design practices available for specific windshield positions.
This helps ensure that airlines realize the longest windshield service life possible and thereby minimize unscheduled system interruptions. Boeing Spares typically stocks windows to the most recent design configuration and sends them to airlines as a kit of parts that includes the attaching hardware. Airlines can check the Boeing Spares inventory for windshield availability on the Boeing PART Page of or contact their Boeing Field Service representatives. Windshield configurations for a particular airplane model are described in the AMM or SRM. Changes to the 737 no. 1 windshield illustrate how design improvements can significantly improve service life. As mentioned earlier, Boeing data collected from reporting operators show a significant improvement in service life for 737 no.
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1 windshields manufactured after November 1992. This corresponds with several important design changes implemented by Boeing that eliminated cracking of the vinyl interlayer and slowed moisture ingress into the windshield, thereby reducing the incidence of delamination, electrical arcing, and outerpane breakage.
The design changes included the following:. Adding no-slip planes in the vinyl interlayer to help prevent vinyl cracks. Adding a urethane interlayer between the vinyl and glass to act as a buffer for mechanical and thermal stresses. Adding a stainless-steel Z-bar to form a barrier against moisture. Improving the sealant used under the Z-bar to perform better when exposed to ultraviolet light, low temperatures, and moisture. SUMMARY To improve the service life of flight deck windshields and reduce unscheduled system interruptions, Boeing encourages operators to survey their fleets to determine windshield design and age in years and flight-hours.
Airlines then can understand the predicted service life of their flight deck windshields by comparing fleet windshield performance with Boeing data. Windshields should be inspected, maintained, repaired, and replaced during scheduled maintenance periods. Boeing, Boeing-approved suppliers, and original window manufacturers can repair damaged, unserviceable windshields. Irreparably damaged windshields should be replaced with windshields of improved design. Editor's note: To gain access to MyBoeingFleet.com, contact Boeing Digital Data Customer Support by e-mail at [email protected] or call 206-544-9990 Monday through Friday from 6:30 a.m. Pacific time).
JOHN HUFF SERVICE ENGINEER COMMERCIAL AVIATION SERVICES BOEING COMMERCIAL AIRPLANES Aero © The Boeing Company. All rights reserved.