Interim Runway Visual Range Rvr Automated Surface Observing System Asos Interface Operational Test And Evaluation Ot E Regression Test Number 2 Report
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Interim Runway Visual Range (RVR) Automated Surface Observing System (ASOS) Interface Operational Test and Evaluation (OT & E) Regression Test Number 2 Report
This report discusses results of a regression test performed on the Interim Runway Visual Range (RVR)/Automated Surface Observing System (ASOS) Interface. Testing was conducted from September 29, 1997, to October 13,1997, at Memphis International Airport. This was the second regression test performed on the interface following modifications to the RVR-ASOS executable, which operates on the Hewlett Packard Palmtop Personal Computer (HP Palmtop PC). Regression Test #2 was primarily intended to determine if the HP Palmtop RVR-ASOS executable would accurately calculate Long-Line RVR data during various configurations and combinations of New Generation RVR data. Proper ingestion and Display of Long-Line RVR products were also confirmed on ASOS display screens. Test results indicate the custom HP Palmtop software accurately calculated Long-Line RVR readings during the conducted test scenarios. Proper ingestion and display of Long-Line RVR data were confirmed on the ASOS. Results also indicate several problems found during previous OT & E tests were corrected from software modifications to the HP Palmtop and the ASOS. These results suggest the Interim RVR/ASOS Interface is suitable for field deployment and usage. Despite the performance improvements observed, four problems were documented during testing. Three problems related to operation of the ASOS and one concerned operation of the HP Palmtop. Since it is anticipated the observed problems will not impact normal operation of the Interim RVR/ASOS Interface or ASOS, ACT-320 recommends deployment at locations designated by the Federal Aviation Administration (FAA) and the National Weather Service (NWS).
Interim Runway Visual Range (RVR)/Automated Surface Observing System (ASOS) Interface Regression Operational Test and Evaluation (OT and E) Report
This report details results of a regression test performed on the Interim Runway Visual Range (RVR)/Automated Surface Observing System (ASOS) Interface. Testing was conducted from January 21 through 23, 1997, at Memphis International Airport (MEM). Testing was intended to determine if modifications to the interface corrected problems observed during initial testing October of 1996. Testing also was designed to determine if Interim RVR/ASOS software performance enhancements operated in accordance with user needs and functions. Problems observed during the initial test included the following: (1) ASOS Display Screen Mismatch with RVR product, (2) Interim RVR/ASOS Interface Boot Failure, (3) Interim RVR/ASOS Software Lock-Up, (4) New Generation RVR Output Rate and Interim RVR/ASOS Interface Software synchronization, (5) Phantom RVR products with RVR Configuration Modifications, and (6) False RVR products during RVR Sensor Calibration. Of the problems discovered during initial testing, nine were resolved as a result of modifications to the Interim RVR/ASOS Interface and the ASOS. It was determined that a maintenance procedure could be used to correct the remaining problem. Correction and resolution of the problems identified during initial Operational Test and Evaluation (OT & E) indicate the Interim RVR/ASOS Interface and ASOS RVR functions are suitable for use in the field from an operational perspective. Proper performance demonstrated by the Interim RVR/ASOS Interface self-restart and illegal entry prevention features also indicate the Interim RVR/ASOS Interface can be used with a minimum of maintenance actions by field technicians. These developments suggest the Interim RVR/ASOS Interface is prepared for use at designated Long-Line RVR sites. As a result, ACT-320 recommends deployment of the interface at sites designated by the National Weather Service (NWS) and Federal Aviation Administration (FAA).
Final Phase Runway Visual Range (RVR)/Automated Surface Observing System (ASOS) Interface Operational Test and Evaluation (OT & E) Report
This report summarizes results of Operational Test and Evaluation (OT & E) performed on the Final Phase Runway Visual Range (RVR) Automated Surface Observing System (ASOS) Interface. Testing was conducted from June 23 through 27, 1997, at Memphis International Airport (MEM). This test effort follows two OT & E sessions for the Interim Phase RVR/ASOS Interface at MEM during October 1996, and January 1997. Refer to document DOT/FAA/CT-TN97/14 for results of OT & E on the Interim RVR/ASOS Interface. The purpose of OT & E was to verify adherence to requirements as stated in Interface Control Document (ICD) 50-SANW-1-0050 and determine the operational effectiveness and suitability of the interface within the National Airspace System (NAS). OT & E activities resulted in the observance of 20 problems documented as Test Trouble Reports (TTR). Of the identified problems, 3 related to New Generation RVR system operation, 7 related to ASOS performance, and 10 were associated with RVR installation and instruction documentation. Initial analysis indicates problems relating to RVR system operation will have a minimal, if any, impact on New Generation RVR/ASOS Interface performance. OT & E resulted in no problems directly relating to New Generation RVR/ASOS Interface operation. As a result, ACT-320 recommends deployment of the interface after the successful completion and passing of remote maintenance monitoring tests.