Ref: Sikorsky/PZL M28 Skytruck aircraft just orreded by SOCOM why does the aircraft have an anti-icing system now installed in both Sierra Nevada Corp (the USAF contractor) aircraft that's not approved by the FAA, or in the original certification documents? It is still questionable how the aircraft was even certified by the FAA in the first place….political pressure by Lockheed Martin's offset program on the F16 sales to Poland? How can a major share of the components and parts used in the aircraft (manufactured in the Ukraine and other former Eastern Block countries) not be produced to FAA standards? Why does the aircraft have a flawed fuel cross-feed problem ten years old and never corrected? I know of no other airplane in this category that, if a fuel pump fails, the fuel in the center wing MAIN tanks is useless. PZL got around this problem by putting in the operating manual that you should turn on all the fuel pumps and jet pumps when operating the aircraft. How the FAA ever approved this, I'll never comprehend. In actuality this does not work as it tends to pump fuel overboard out the vents. As a result you must always burn from the outboard tanks first and as soon as the fuel level got down start pumping from the center-wing tanks to the outboard tanks. The reason was because that was the only place you could pump the fuel from the center wing tanks. You could not pump directly from the center wing to the main tanks. Also this fuel contraption causing the aircraft to tilt if parked on a ramp with a pitch of more than 1 degree! Other issues are the magnetized hinge pin rods on the access panels in the wings which create serious error problems with the navigation system when a flux valve is installed near one. The O-rings in the main and nose wheel gear tend to let the nitrogen charge bleed by. When this occurs the nose wheel extends the cylinder causing the disconnection of the nose wheel steering. This sure gets your attention real quick if you land with it in this condition with the nose wheel at a cock-eyed angle. There are these and further poor characteristics with the aircraft. Where were the FAA quality controls in certification?Other issues were the aircraft manuals as this matter went back and forth between the FAA and PZL dozens of times. As a result PZL never got the books up to standards as far as the FAA was concerned, and as such they still leave a lot to be desired. The word' was that that some higher-up' in the FAA process just told the certification team to approve the manuals and get the damn airplane certified. Then the FAA requested a series of destructive testing on the aircraft, but it appears that critical prerequisite just went by the wayside. The destructive testing was never completed on the M28 as required by the FAA on type-rated aircraft; unheard of! Perhaps the original FAA Airworthiness Certification process initially used needs to now be reviewed.Most pressing concern is that of government waste! Is price gouging by both Sikorsky and SNC concerning the USAF now going on? The last cost quoted in 2007 for a standard equipped M28 Skytruck by the PZL factory was $4.2M and now the USAF (and tax payers) are being charged well over $7M plus for the same aircraft by Sikorsky. What about a $600 (2007 price) main wheel tire that is now costing the USAF close to $2,000? Or a $100,000 ferry tank charged to SNC that originally sold for only $9,000 less than two years ago? Or $70 rivets! And $20,000 brake pads for an aircraft originally designed by the Soviet Union forty years ago? Perhaps the over-pricing could be justified on an F22, but not the M28. The list of bloated pricing goes on and on. I am certain that the public would be offended to hear of this fleecing of the U.S. military and government.
skytruck 16.01.2010, 20:43
To samolot transportowy skytruck! Zdjęcie samolotu transportowego skytruck!