https://app.box.com/s/sqtjg17r3kwedzluok4xtmd195ktcjxg
DOT&E 2014, oikealta ylhäältä voi ladata
"In June, the Program Office and the Services completed a review of nearly 1,500 deficiency reports accumulated since the beginning of testing to adjudicate the status of all capability deficiencies associated with Block 2B fleet release/Marine Corps IOC. The review showed that 1,151 reports were not yet fully resolved, 151 of which were assessed as “mission critical” with no acceptable workaround for Block 2B fleet release."
"Block 3i flight test progress began late, and has progressed much slower than expected."
"This was the first testing of the new HMDS on F-35 test aircraft. The test team discovered deficiencies, particularly in the stability of the new display management computer for the helmet, and suspended further testing until software that fixes the deficiencies in the helmet system can be provided"
"Unlike many legacy aircraft, the F-35B needs external air conditioning when on battery power or an external power source. Cold fueling operations, when the engine is not turned on, will thus need an air conditioning cart"
"Structural durability testing of all variants using full scale test articles is ongoing, each having completed at least one full lifetime (8,000 equivalent flight hours, or EFH). All variants are scheduled to complete three full lifetimes of testing before the end of SDD; however, complete teardown, analyses, and Damage Assessment and Damage Tolerance reporting is not scheduled to be completed until August 2019."
"F-35A:
Cracking of the left hand side (LHS) integrated power package shear web lug at FS503, found at 10,082 EFH
Cracking of the LHS FS503 frame support, found at 10,162 EFH
Cracking in the LHS F2 fuel floor flange, found at 11,000 EFH
F-35B durability test article (BH-1) has been halted since September 2013, when the FS496 bulkhead severed at 9,056 EFH, transferred loads to an adjacent FS518 bulkhead, and caused cracking."
"The Verification Simulation (VSim) is a man-in-the-loop, mission software-in-the-loop simulation developed to meet the OTAs’ requirements for Block 3F IOT&E, as well as to provide a venue for contract compliance verification for the Program Office. .....contractual use of VSim for Block 2B was cancelled"
"Aircraft availability was flat over most of the past year, maintaining an average for the fleet of 37 percent for the 12-month rolling period ending in September"
"The critical failure rates for all three variants were below threshold values and below projected interim goals."
"A number of components have demonstrated reliability much lower than predicted by engineering analysis...
Common to All Variants:
• Avionics Processors
• Main Landing Gear Tires
• Thermal Management System
• Ejection Seat Assembly
• Panoramic Cockpit Display Electronics Unit
• Low Observable Cure Parameters
• Helmet Display Unit
• Seat Survival Kit
• Igniter-Spark, Turbine Engine
• On-Board Oxygen Generating System"
"Several factors likely contribute to extensive maintenance time, especially long cure times for Low Observable repair materials. The Program Office is addressing this issue with new materials that can cure in 12 hours vice 48 for example, but some of these materials may require freezer storage"
"Field maintainers have reported poor cable routing behind panels that interferes with required maintenance, and awkward placement of some components, which makes removing and replacing them slow, and increases the chances they will induce a failure in a nearby component working with tools in confined spaces."
"ALIS 2.0.0 demonstrated 4 additional critical deficiencies and 53 serious deficiencies."
"Diagnostic capability is designed to enable maintenance by detecting true faults within the air vehicle and accurately isolating those faults to a line-replaceable component. To date, the diagnostic functional capability has demonstrated low detection rates, poor accuracy, and high false alarm rates."
DOT&E 2014, oikealta ylhäältä voi ladata
"In June, the Program Office and the Services completed a review of nearly 1,500 deficiency reports accumulated since the beginning of testing to adjudicate the status of all capability deficiencies associated with Block 2B fleet release/Marine Corps IOC. The review showed that 1,151 reports were not yet fully resolved, 151 of which were assessed as “mission critical” with no acceptable workaround for Block 2B fleet release."
"Block 3i flight test progress began late, and has progressed much slower than expected."
"This was the first testing of the new HMDS on F-35 test aircraft. The test team discovered deficiencies, particularly in the stability of the new display management computer for the helmet, and suspended further testing until software that fixes the deficiencies in the helmet system can be provided"
"Unlike many legacy aircraft, the F-35B needs external air conditioning when on battery power or an external power source. Cold fueling operations, when the engine is not turned on, will thus need an air conditioning cart"
"Structural durability testing of all variants using full scale test articles is ongoing, each having completed at least one full lifetime (8,000 equivalent flight hours, or EFH). All variants are scheduled to complete three full lifetimes of testing before the end of SDD; however, complete teardown, analyses, and Damage Assessment and Damage Tolerance reporting is not scheduled to be completed until August 2019."
"F-35A:
Cracking of the left hand side (LHS) integrated power package shear web lug at FS503, found at 10,082 EFH
Cracking of the LHS FS503 frame support, found at 10,162 EFH
Cracking in the LHS F2 fuel floor flange, found at 11,000 EFH
F-35B durability test article (BH-1) has been halted since September 2013, when the FS496 bulkhead severed at 9,056 EFH, transferred loads to an adjacent FS518 bulkhead, and caused cracking."
"The Verification Simulation (VSim) is a man-in-the-loop, mission software-in-the-loop simulation developed to meet the OTAs’ requirements for Block 3F IOT&E, as well as to provide a venue for contract compliance verification for the Program Office. .....contractual use of VSim for Block 2B was cancelled"
"Aircraft availability was flat over most of the past year, maintaining an average for the fleet of 37 percent for the 12-month rolling period ending in September"
"The critical failure rates for all three variants were below threshold values and below projected interim goals."
"A number of components have demonstrated reliability much lower than predicted by engineering analysis...
Common to All Variants:
• Avionics Processors
• Main Landing Gear Tires
• Thermal Management System
• Ejection Seat Assembly
• Panoramic Cockpit Display Electronics Unit
• Low Observable Cure Parameters
• Helmet Display Unit
• Seat Survival Kit
• Igniter-Spark, Turbine Engine
• On-Board Oxygen Generating System"
"Several factors likely contribute to extensive maintenance time, especially long cure times for Low Observable repair materials. The Program Office is addressing this issue with new materials that can cure in 12 hours vice 48 for example, but some of these materials may require freezer storage"
"Field maintainers have reported poor cable routing behind panels that interferes with required maintenance, and awkward placement of some components, which makes removing and replacing them slow, and increases the chances they will induce a failure in a nearby component working with tools in confined spaces."
"ALIS 2.0.0 demonstrated 4 additional critical deficiencies and 53 serious deficiencies."
"Diagnostic capability is designed to enable maintenance by detecting true faults within the air vehicle and accurately isolating those faults to a line-replaceable component. To date, the diagnostic functional capability has demonstrated low detection rates, poor accuracy, and high false alarm rates."
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