13
By: Zulfiqar Ali 11ME102 By: Zulfiqar Ali 11ME102

Maintenance Mistakes

Embed Size (px)

Citation preview

By: Zulfiqar Ali

11ME102

By: Zulfiqar Ali

11ME102

• Maintenance Engineering

• Maintenance Mistakes or Errors

• Consequences of Errors in Aviation

• Conveyor Maintenance Mistakes

• Conclusion

Contents

• Maintenance engineering

• Is the occupation that uses engineering theories and practices to plan and implement routine maintenance of equipment and machinery.

• Maintenance engineering not only requires engineers to monitor large production machine operations and heavy duty equipment, but also often requires involvement with computer operations.

• The maintenance engineer is responsible for the efficiency of daily operations and for discovering and solving any operational problems in the plant.

Maintenance Engineering

Maintenance Error

“A maintenance error is considered to have occurred when the maintenance system, which includes the human element, fails to perform in the manner expected in order to achieve its safety objectives.”

Examples of Maintenance Errors & their consequences (PA F)

Error – 1Error – 1A technician over torqued the outlet union nut damaging internal threads of the hydraulic filter cover and de-shaping the sealing ring of the assembly (F-7P).

UNION AND SEAL OF THE HYDRAULIC FILTER COVER ASSEMBLY

Examples of Maintenance Errors & their consequences (cont)

Error – 1 (Consequence)Error – 1 (Consequence)

After 10 minutes of Flight (F-7P), once gears were lowered for a touch and go landing, main hydraulic warning light came steady on with pressure dropping to below normal limit due to hydraulic leak!

Examples of Maintenance Errors & their consequences (cont)

Maintenance team worked inside the gas path to rectify an engine anomaly (F-7P). A tool was left behind which went undetected through all supervisory checks and the aircraft was given a full power ground run!

Error – 2Error – 2

Examples of Maintenance Errors & their consequences (cont)

Error – 2 (Consequence)Error – 2 (Consequence)

The undetected tool inside the gas path was ingested during Funco run and induced damage to compressor blades (all six stages)!

Examples of Maintenance Errors & their consequences (cont)

BA maintenance technician on night shift installed the incorrect bolts during windscreen replacement and did not consult the applicable IPB/Tech Manual.

Error – 3Error – 3

The incorrect bolts could not hold the left windscreen in flight due to cabin pressure resulting in the wind screen blowing off in air. The pilot was jerked out of his seat by the rushing air and was forced out of the cockpit with his knees snagging onto the flight controls!

Error – 3 (Consequence)Error – 3 (Consequence)

Examples of Maintenance Errors & their consequences (cont)

Conveyor Maintenance Mistakes

12 Most Costly Conveyor Maintenance Mistakes.

1. Lack of regular inspections.2. Missing maintenance records. 3. Failing to take the temperature of motors and reducers. 4. Not adhering to OSHA standards. 5. Lack of adequate maintenance coverage. 6. Inadequate parts inventory. 7. Not learning from repeated breakdowns. 8. "If it isn't broken, just let it go and don't worry about it."9. Failing to care for the controls. 10.Using a conveyor in ways it wasn't intended. 11.Avoiding those difficult places. 12.Failing to train employees in the operation of conveyors.

Conclusion

Thank [email protected]