Maintainers use wrenches to torque the most critical safety of flight parts and assemblies on naval aircraft. FRCSE had one kit in-house and was waiting on the last three to arrive.
The team accomplished all of this with data from systems not typically used for the analysis of maintenance impacts, and by using Microsoft Teams, email and other teleconferencing capabilities. Initial analysis revealed up to items were miscalibrated. Morehouse, the original equipment manufacturer, discovered the fracture and said the damage was not unusual. Ultimately, items across several fleet activities needed to be recalibrated.
Fortunately, the quality escape did not impact the airworthiness of any aircraft. In light of this, the team developed a new way forward for calibration. First, a culture of quality means we all share a responsibility for excellence. For example, the attenuator in a signal generator may require calibration every 12 months, whereas the rest of the instrument parameters should be calibrated every 4 months. Since the attenuator calibration is time-consuming and may require unavailable standards, use of the multiple-interval approach can save many man-hours and can permit the more frequent calibration.
When a specific instrument has been designated for multiple calibration intervals, such information is provided in the applicable calibration procedure.
The calibration due date reflects the due date of the next partial or complete calibration, as the case may be. Calibrated in Place.
For example, some instruments, such as hardness testers and densitometers, are provided with their own standards and should be calibrated each time they are used or at least on a frequent basis. Instruments, such as oscillographic recorders, may require calibration before, during, and after each use.
Some automatic instruments have self-calibration tests that should be performed each time they are used. Still other instruments may require calibration as part of check-out procedures performed daily or weekly. These calibrations should be recorded in maintenance logs.
Whenever recognized, the requirement for calibration by the user and the calibration interval are indicated in the METRL. This label is not replaced at each calibration. When the label is first affixed to the instrument, it is annotated as to the appropriate calibration intervals.
Terms not meeting these conditions will not be considered as acronyms within the text and the words will be spelled out. In all cases the Appendices are intended as examples only and may not reflect the most current guidance or format. Higher authority source documents should be consulted. Sample correspondence provided as Naval messages may be communicated in letter format to facilitate timely transmission by electronic facsimile. Volume IV is made up of four parts.
Volume V is made up of three parts. Part I contains requirements and procedures necessary to establish and maintain a Quality Control Program. Part II contains the requirements and procedures for establishing and maintaining a Quality Assurance Program. The distribution of Part III has been limited. A formal change process has been established for all five volumes of the manual and is described in Figure 1.
Users of this manual are encouraged to submit change requests.
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