Evaluation of Fault Reporting/Fault Isolation for F-15 Aircraft.
AIR COMMAND AND STAFF COLL MAXWELL AFB AL
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The author set out to see if the accuracy of the FRFI manuals is a factor in their non-use. Accuracy of the manuals was determined by analyzing actual reported inflight discrepancies. Fault code accuracy was obtained by comparing each discrepancy as written on the TAC Form 122 Debriefing Record with the discrepancy depicted in the FR manual. Accuracy of repair actions was obtained by tracking the repair action recommended by the fault isolation manual and comparing it with that shown on the TAC Form 122. Analysis revealed the F-15 fault reporting manual can accurately represent a random inflight malfunction 83.8 of the time, and these malfunctions can be accurately isolated in the fault isolation manual 77.7 of the time. These accuracy levels are acceptable and not a major factor in the non-use of the manuals. Observation of the debriefing and maintenance process, and interviews with aircrews and maintenance technicians, revealed a general lack of understanding and confidence in the FRFI system. This lack of understanding and confidence, exhibited by both aircrews and maintenance personnel is the primary reason for the systems non-use. Recommended actions to show the effectiveness of using the system as designed are provided.
- Attack and Fighter Aircraft
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