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A B727-200 was dispatched with 2 reverser system inoperative in the normal mode due to confusion and misunderstanding in the interpretation of the MEL.
| Attributes | |
| ACN | 397101 |
| Time | |
| Date | 199803 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 397101 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 5000 flight time type : 1000 |
| ASRS Report | 398124 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Deferred #1 engine stow light because of inbound write-up. Deferred it per MEL chapter 78. There is no mention in the MEL xx that if another reverser is deactivated per MEL yy amber light, that a reverser can't be deferred for the blue light. There is no mention about amber lights in MEL xx. In MEL yy under special notes paragraph (B)(#4), the reverser not stow (blue) light operates normally. There should be a xref about the lights, MEL is not clear about the lights in xx.
Original NASA ASRS Text
Title: A B727-200 WAS DISPATCHED WITH 2 REVERSER SYS INOP IN THE NORMAL MODE DUE TO CONFUSION AND MISUNDERSTANDING IN THE INTERP OF THE MEL.
Narrative: DEFERRED #1 ENG STOW LIGHT BECAUSE OF INBOUND WRITE-UP. DEFERRED IT PER MEL CHAPTER 78. THERE IS NO MENTION IN THE MEL XX THAT IF ANOTHER REVERSER IS DEACTIVATED PER MEL YY AMBER LIGHT, THAT A REVERSER CAN'T BE DEFERRED FOR THE BLUE LIGHT. THERE IS NO MENTION ABOUT AMBER LIGHTS IN MEL XX. IN MEL YY UNDER SPECIAL NOTES PARAGRAPH (B)(#4), THE REVERSER NOT STOW (BLUE) LIGHT OPERATES NORMALLY. THERE SHOULD BE A XREF ABOUT THE LIGHTS, MEL IS NOT CLR ABOUT THE LIGHTS IN XX.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.