Go | New | Find | Notify | Tools | Reply |
I thought it was appropriate that these facts should appear on the new site: FACT 1:IFEN system was connected to an essential bus on SR111 (and 15 other MD11 sisterships). FACT 2:IFEN is in question as an ignition source on SR111. Mark called the TSB about 6 weeks ago to verify that. FACT 3:IFEN could not be successfully deactivated by the crew, given the checklist procedure, since it was connected to an essential bus instead of a cabin bus (which is how it is normally done because an IFE is obviously a non-essential item for flying an a/c.) FACT 4:Wiring for the IFEN was improperly mixed with the harder Kapton insulated wire in the installation and bent at 90 degree angles against the recommendations of the manufacturer, McDonnell Douglas.Patrick Price said it's also evident installers used pliers to bend the wires, another faux pas. "You don't dare do that with insulation material -- you might damage it," said Price(Canadian News) FACT 5: It was reported in a 1997 swissair internal newsletter that swissair was in a hurry to have this IFEN/IFE installed on their MD11 aircraft. (Source; David Evans, Air Safety Week) FACT 6 In late October of 1998, Swissair disconnected the entertainment system on their remaining fleet of MD11s (15 sisterships)because the investigators found the wiring to this system (tefzel) as well as Kapton wiring in the forward section of the plane to have traces of electrical arcing. FACT 7 The FAA has issued an AD prohibiting the use of this IFEN/IFE ( unique to swissair), to be used on commercial a/c. FACT 8 The FAA (see Evans/Wojnar interview), stated that the IFEN/IFE was incompatible with the electrical design philosophy of the airplane.* FACT 9 SBA was both the STC applicant and the approving organization under their DAS.* FACT10 Santa Barbara Aerospace who issued the certification for this system, surrendered the DAS on July 1, 1999. The latest status is that SBA has declared bankruptcy and shut the doors.* FACT11 Within hours after the crash, before the burnt wiring was discovered by the investigators, the FAA was looking at the supplemental type certificate (system) installed on the accident aircraft.* FACT12:The FAA stated (Wojnar) that the installers of this system (Hollinsead) 'didn't use good industry practices for the installations on the wiring'.* FACT 13:"The entertainment setup, whose power supply runs through the cockpit, was identified as one system with sufficient electrical energy to disrupt power to the affected flight deck units and with components in a position to feed smoke into the cockpit, but not the cabin. TSB officials said they have no evidence that the smoke infiltrated the passenger cabin." (Source Aviation Week) FACT 14: Qantis elected not to purchase the IFE system from IFT because they determined that the system required too much power usage.(Source; FACTS) FACT15: Though pulling the IFEN circuit breakers (the only means Swissair flight crews had of removing power to the IFEN) was a part of the 'parking checklist', it was not added onto the emergency checklist. It should be noted that aircraft circuit breakers (CBs) should not be used as switches. They were not designed to be used that way and constant use will increase the failure rate of their primary function. 'Frequent action of the circuit breaker can lead to 'floppy' action and CBs so used may fail to pop when they should. When the circuit protective device fails to open a faulty circuit, one can reasonably expect electrical fireworks to result. Fireworks may occur at the distribution bus, the loss of which means loss of systems en masse.' Source:Air Safety Week. FACT16: The Federal Aviation Administration (FAA)proposed 14 airworthiness directives (ADs) that would ensure flight crews have the ability to shut off in-flight entertainment systems on several transport aircraft models when necessary. An extensive review of current in-flight entertainment systems revealed that these systems can remain powered despite current flight crew procedures.(source:FAA)<br> FACT17 “During the introduction to service of the MD-11 IFEN, in the spring of 1998, numerous problems with overheating of the IFEN had been experienced. The SR MD-11 Chief Pilot later admitted (in an Air Safety Week interview) that they had had to vary the operating range of the MD-11's air-conditioning control selections in order to overcome this.” (Source:Tim van Beveren) *Source: David Evan's(Editor of Air Safety Week)Wojnar(deputy director, aircraft certification service,FAA)interview | |||
|
FACT 3:IFEN could not be successfully deactivated by the crew, given the checklist procedure, since it was connected to an essential bus instead of a cabin bus (which is how it is normally done because an IFE is obviously a non-essential item for flying an a/c.) I wanted to note that in fact #3 it is not clear that if the IFEN had been deactivated after an electrical arc had occurred that it would have prevented the ensuing fire. It might have already been too late once the tragic chain of events had started on it's terrible path of destruction. | ||||
|
The way that the IFEN was installed was IMHO criminal. It defied ANY practiced standards. i have my doubts about the qualifications of the installers. House electricians do bend wires with a plier, but I do not know of anyone else in the wiring world of any 'transport means', be it car, tank, plane or ship. The certification was a sham, and the physical install used criminal (IMHO) methods. The only excuse I can come up with is for the so-called engineers and mechanics, that they were mentally challenged, which would make it unvoluntary (wo)manslaughter. I shudder at the thought, that those so-called engineers and mechanics might be working on planes again. With the USA as it is (no offense intended), they might be. A scaring thought. hank@ster | ||||
|
Another no-brainer was using a breaker as a switch. Proof, that the 'designers, engineers, supervisors and mechanics' had no clue or experience on wiring in/of an aircraft. To put it mildly, they must have been dumb. A breaker is there to pop, when it is hit by an overload, which should rarely happen. And before pushing it back, the cuse for it being tripped has to be investigated and corrected before it being pushed back (or better a new one installed, just in case. Breakers are cheap, life is not! I do not refer to US lawyers talk. Life is the most precious gift we enjoy, and it can never be 'compensated' by any amount of money). I regard it as cynical, when a lost life is 'calculated' in $$$ (against possible gains in stock, the insurance, and in the end us, will take care of that). A life IS priceless. If safety in air travel should be improved, the individual law suits, that only benefits the lawyers are not the right approach. Neither having the insurance companies (and us) cover it (as with the lawyers, we are lining their pockets with every ticket we buy). Air;ines and their employees must feel responsible, and must be geared and prodded into the right direction. Making sure, that everything is ok and as safe as possible, never minding the costs (at least at the technical and maintainance level). 'After installs', they should be more scrutinized. IFEN could only be installed by the unhealthy 'free market, free to do attitude [stressed 1st amandment]' and Swiss banks greed. Open the flak, start to shoot me down. You can get away in the USA with many a things. Think about cars and where safety devices and regulations were and are enforced by law, and independent bodies look after it. In Germland, the ADAC (General German Automobil Club) has been crashing cars and pointing the weaknesses. A private institution. They do give a ratons behind, if it is a Chevy Nova (Spanish No Go) or a fat Merc. The industry listens. Ok, throw bananas hank@ster | ||||
|
Hank, You are so right in all you have said. I can't even think of anything to add to it. Thanks so much for caring. Barbara | ||||
|
Powered by Social Strata |
Please Wait. Your request is being processed... |