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MMEL Module Reports |
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MMEL Module Reports |
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MMEL Module Reports
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MMEL Module Reports |
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MMEL Module Reports |
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To create MMEL reports:
| 1. | Activate the Product tree view. |
| 2. | Select FMECA as current analysis |
| 3. | Navigate to a desired level in the Product Tree. |
| 4. | From the Reports menu, choose Standard Kit; the Report Selection dialog box opens. |
| 5. | Select the report Type: “MMEL”. |
| 6. | Select the report Subtype: “Candidate List”, “Five Column”, “Five Column (MS Word)” or “Detailed”. |
| 7. | Choose OK. |
RAM Commander generates and displays the report in a report window. Only items with the MMEL status equal to “Candidate” will be included in the report.
The MMEL module provides the following reports:
| 1. | MMEL Candidate List – shows all MMEL candidates in the project: |
Candidates List Report
Project name: AIRC
ATA |
Name |
|---|---|
21-50-07 |
PACK TEMPERATURE SENSOR |
21-50-16 |
PACK INLET TEMPERATURE SENSOR L |
21-51-76 |
FLOW CONTROL VALVE |
21-52-12 |
PACK DISCHARGE TEMPERATURE SENSOR L |
21-52-48 |
PACK DISCHARGE PRESSURE SENSOR L |
| 2. | MMEL (“five column format”) report: |
Explanation of the report columns:
Column |
Column description |
|---|---|
(1) System & Sequence Numbers |
(Column 1) Systems numbers are based on the Air Transport Association (ATA) Specification Number 100 or 2200 and items are numbered sequentially. |
(2) Rectification Interval |
(Column 2) - Rectification Interval, A, B (3 days), C (10 days), D (120 days) or TBD. |
(3) Number Installed |
(Column 3) is the number (quantity) of items normally installed in the aircraft. This number represents the aircraft configuration considered in developing this MMEL. Should the number be a variable (e.g., passenger cabin items) a number is not required; a “-” is then inserted in column. |
(4) Number required for dispatch |
(Column 4) is the minimum number (quantity) of items required for operation provided the conditions specified in Column 5 are met. Should the number be a variable (e.g., passenger cabin items) a number is not required; a “-” is then inserted in column 4. |
(5) Remarks or Exceptions |
(Column 5) in this column includes a statement either prohibiting or permitting operation with a specific number of items inoperative, provisos (conditions and limitations) for such operation, and appropriate notes. |
3. MMEL Detailed Report displays quantitative analysis detailed information for each MMEL candidate:
MMEL - Quantitative analysis results (JAA)
Project name: AIRC_EN_11
ATA: 21-52-48
Item Name: PACK DISCHARGE PRESSURE SENSOR L
Failure Mode |
Fault Indication |
Failure Condition |
Failure Cond Classification |
Probability |
O & M |
Prob. after cand. failure (per FH) |
Next Worst |
Prob. after next worst (per FH) |
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Leak |
yes |
n/a |
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Out of range (high) |
yes |
Un-anniciated total loss of air supply to crew and passengers. |
Catastrophic |
2.571E-010 |
no |
3.734E-009 |
EXT-EIU-2 L - EIU: Loss |
8.923E-005 |
yes |
2.571E-010 |
EXT-CP-2 - Control Panel: Loss of RAV opening command |
3.102E-008 |
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Out of range (low) |
yes |
n/a |
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In range (high) |
no |
n/a |
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In range (low) |
yes |
n/a |
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Explanation of the report columns:
Above the report table two data fields appear:
ATA – Candidate Item ATA Number
Item Name - Candidate Item Name
Column |
Column description |
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Failure Mode |
Item Failure Mode |
Fault Indication |
Indication/Detection for current Failure Mode |
Failure Condition |
Failure Condition from the FHA |
Failure Cond. Classification |
Failure Condition Classification according to FHA (Catastrophic, Hazardous, Major, Minor). |
Probability (per FH) |
Expected probability of the Failure Condition according with FTA calculation. |
O & M |
No – results without O&M. Yes – results after O&M |
Prob. after cand. failure (per FH) |
Expected probability of the Failure Condition after the candidate failed according with FTA calculation. |
Next Worst Failure in Flight |
Next Worst Failure (1st failure in flight) according with Fussell-Vesely Importance criterion. |
Prob. after next worst (per FH) |
Expected probability of the Failure Condition after the next worst failure according with FTA calculation. |
Second Worst Failure in Flight |
Second Worst Failure (2nd failure in flight) according with Fussell-Vesely Importance criterion. |
Prob. after second (per FH) |
Expected probability of the Failure Condition after the second worst failure according with FTA calculation. |
See also "Reports" paragraph in the RAM Commander Fundamentals chapter for more general information about reports.