Maintenance Error Decision Aid (meda) Results Form



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Maintenance Error Decision Aid (MEDA) Results Form

Section I—General Information



Reference #:      

Airline:

Station of Maintenance System Failure:      

Aircraft Type:      

Engine Type:      

Reg. #:      

Fleet Number:      

ATA #:      

Aircraft Zone:      

Ref. # of previous related event:      

Interviewer’s Name      

Interviewer’s Telephone #:      

Date of Investigation:      

Date of Event:      

Time of Event:       am pm

Shift of Failure:      

Type of Maintenance (Mx) (select one):
1. Line: If Line, what type?
2. Base: If Base, what type?


Date Changes Implemented:      

Section II – Event


Please select the event (check all that apply)


Operations Process Event
 a. Flight Delay     days   hrs.  min.
 b. Flight Cancellation
 c. Gate Return
 d. In-Flight Shut Down
 e. Air Turn-Back

 f. Diversion


 g. Smoke/fumes/odor event
 h. Other (explain below)

 2. Aircraft Damage Event


 3. Personal Injury Event
 4. Rework (e.g., did not pass Ops check/inspection)
 5. Airworthiness Control
 6. Found during Maintenance
 7. Found during Flight
 8. Other Event (explain below)


Describe the incident/degradation/failure (e.g., could not pressurize) that caused the event.

Section III – Maintenance System Failure


Please select the maintenance system failure(s) that caused the event:


1. Installation Failure

a. Equipment/part not installed
 b. Wrong equipment/part installed
 c. Wrong orientation
 d. Improper location
 e. Incomplete installation
 f. Extra parts installed
 g. Access not closed
 h. System/equipment not reactivated/deactivated
 i. Damaged on remove/replace
 j. Cross connection
 k. Mis-rigging (controls, doors, etc.)
 l. Consumable not used
 m. Wrong consumable used
 n. Unserviceable part installed
 o. Other (explain below)

2. Servicing Failure



a. Not enough fluid
 b. Too much fluid

c. Wrong fluid type
 d. Required servicing not performed
 e. Access not closed
 f. System/equipment not deactivated/reactivated
 g. Other (explain below)

3. Repair Failure (e.g., component or structural repair)

a. Incorrect
 b. Unapproved
 c. Incomplete
 d. Other (explain below)
4. Fault Isolation/Test/Inspection failure

a. Did not detect fault
 b. Not found by fault isolation
 c. Not found by operational/ functional test
 d. Not found by task inspection
 e. Access not closed
 f. System/equipment not /reactivated
 g. Not found by part inspection
 h. Not found by visual inspection
 i. Technical log oversight
 j. Other (explain below)

5. Foreign Object Damage/Debris

a. Tooling/equipment left in aircraft/engine
 b. Debris on ramp
 c. Debris falling into open systems
 d. Other (explain below)

6. Airplane/Equipment Damage



a. Tools/equipment used improperly
 b. Defective tools/equipment used
 c. Struck by/against
 d. Pulled/pushed/drove into
 e. Fire/smoke
 f. Other (explain below)
7. Personal Injury

a. Slip/trip/fall
 b. Caught in/on/between
 c. Struck by/against
 d. Hazard contacted (e.g., electricity, hot or cold surfaces, and sharp surfaces)
 e. Hazardous substance exposure (e.g., toxic or noxious substances)
 f. Hazardous thermal environment exposure (heat, cold, or humidity)
 g. Other (explain below)

8. Maintenance Control Failure

a. Scheduled task omitted/late/incorrect
 b. MEL interpretation/application/removal
 c. CDL interpretation/application/removal
 d. Incorrectly deferred/controlled defect
 e. Airworthiness data interpretation
 f. Technical log oversight
 g. Airworthiness Directive overrun
 h. Modification control
 i. Configuration control
 j. Records control
 k. Component robbery control
 l. Mx information system (entry or update)
 m. Time expired part on board aircraft
 n. Tooling control
 o. Mx task not correctly documented
 p. Not authorized/qualified/certified to do task
 q. Other (explain below)

9. Other (explain below)

Did the Maintenance System Failure “fly” on the aircraft?  Yes  No
Describe the specific maintenance failure (e.g., auto pressure controller installed in wrong location).


Section IV. Chronological Summary of the Event, including how some Contributing Factors lead to additional Contributing Factors

(Use additional pages, as necessary)


Section V. Summary of Recommendations


(Use additional pages, as necessary)

Section VI – Contributing Factors Checklist


A. Information (e.g., work cards, maintenance manuals, service bulletins, maintenance tips, non-routines, illustrated parts catalogs, etc.)
N/A 


1. Not understandable
2. Unavailable/inaccessible
3. Incorrect
4. Too much/conflicting information
5. Update process is too long/complicated
6. Incorrectly modified manufacturer's MM/SB

7. Information not used


8. Inadequate
9. Uncontrolled
10. Other (explain below
)


Describe specifically how the selected information factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

B. Ground Support Equipment/Tools/Safety Equipment [Personal Protective Equipment (PPE) and Collective Protective Equipment (CPE)]
N/A 




1. Unsafe
2. Unreliable
3. Layout of controls or displays
4. Out of calibration
5. Unavailable
6. Inappropriate for the task
7. Cannot use in intended environment
8. No instructions
9. Too complicated
10. Incorrectly labeled/marked
11. Not used
12. Incorrectly used
13. Inaccessible
14. Past expiration date
15. Other (explain below)



Describe specifically how selected ground support equipment/tools/safety equipment factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

C. Aircraft Design/Configuration/Parts/Equipment/Consumables
N/A 


1. Complex
2. Inaccessible
3. Aircraft configuration variability
4. Parts/equipment unavailable
5. Parts/equipment incorrectly labeled
6. Inappropriate for the task
7. Easy to install incorrectly
8. Not used
9. Not user friendly
10. Consumable unavailable
11. Wrong consumable used
12. Expired consumable used
13. Other (explain below)


Describe specifically how the selected aircraft design/configuration/parts/equipment/consumables factor(s) contributed to system failure.

Recommendations to correct the Contributing Factors listed above.

D. Job/Task
N/A 


1. Repetitive/monotonous
2. Complex/confusing

3. New task or task change


4. Different from other similar tasks

5. Other (explain below)




Describe specifically how the selected job/task factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

  1. Knowledge/Skills

N/A 

1. Technical skills
2. Task knowledge
3. Task planning

4. Airline process knowledge


5. Aircraft system knowledge
6. English language proficiency

7. Teamwork skills


8. Computing skills
9. Other (explain below)

Describe specifically how the selected knowledge/skills factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

  1. Individual Factors

N/A 

1. Physical health (including hearing and sight)
2. Fatigue
3. Time pressure
4. Peer pressure
5. Complacency
6. Body size/strength
7. Personal event (e.g., family problem, car accident)
8. Task distractions/interruptions
9. Memory lapse (forgot)

10. Visual perception


11. Lack of assertiveness
12. Stress
13. Situation awareness
14. Workload/task saturation
15. Other (explain below)



Describe specifically how the selected individual factors contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

  1. Environment/Facilities

N/A 

1. High noise levels
2. Hot
3. Cold
4. Humidity

5. Rain
6. Snow


7. Wind
8. Lighting

__9. Vibrations


__10. Cleanliness
__11.Hazardous/toxic substance

__12. Power sources


13. Inadequate ventilation
14. Markings
15. Labels/placards/signage
16. Confined space
17. Other (explain below)


Describe specifically how the selected environment/facilities factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

  1. Organizational Factors

N/A 

1. Quality of support from Technical Organizations (e.g., engineering, planning, technical pubs)
2. Company policies
3. Not enough staff

4. Corporate change/restructuring


5. Union action
6. Work process/procedure
7. Work process/procedure not followed

8. Work process/procedure not documented (e.g., use tribal knowledge)


9. Work group normal practice (norm)
10.Team building
11.Other (explain below)


Describe specifically how the selected organizational factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above.

  1. Leadership/Supervision

N/A 

1. Planning/organization of tasks

2. Prioritization of work

3. Delegation/assignment of task

4. Unrealistic attitude/expectations

5. Does not assure that approved process/procedure is followed

6. Amount of supervision

7.Other (explain below)



Describe specifically how the selected leadership/supervision factor(s) contributed to the failure.

Recommendations to correct the Contributing Factors listed above.


  1. Communication

N/A 

1. Between departments
2. Between mechanics
3. Between shifts

4. Between maintenance crew and lead


5. Between lead and management
6. Between flight crew and maintenance

__7.Other (explain below)




Describe specifically how the selected communication factor(s) contributed to the system failure.

Recommendations to correct the Contributing Factors listed above

MEDA Results Form Revision M 18 January 2016


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