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A B737 air carrier operator reports MEL 27-13 involves multiple subsystems affected by its malfunction and the need to clarify this for pilots.
| Attributes | |
| ACN | 795591 |
| Time | |
| Date | 200807 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 795591 |
| Events | |
| Anomaly | maintenance problem : non compliance with mel non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Company Aircraft Chart Or Publication |
| Primary Problem | Chart Or Publication |
Narrative:
MEL 27-13 stall warning system has a note under the last item (D I believe it is) that lists multiple system affected by this one computer. The hazard idented by ASRS appears to apply as the MEL may lead to confusion about what system should be placarded and how this MEL should be documented by the flight crew. Although this would fall under risk assessment code 4 or 5; please consider addressing this forac with maintenance and pubs. MEL verbiage clarification.
Original NASA ASRS Text
Title: A B737 ACR OPERATOR REPORTS MEL 27-13 INVOLVES MULTIPLE SUBSYSTEMS AFFECTED BY ITS MALFUNCTION AND THE NEED TO CLARIFY THIS FOR PILOTS.
Narrative: MEL 27-13 STALL WARNING SYS HAS A NOTE UNDER THE LAST ITEM (D I BELIEVE IT IS) THAT LISTS MULTIPLE SYS AFFECTED BY THIS ONE COMPUTER. THE HAZARD IDENTED BY ASRS APPEARS TO APPLY AS THE MEL MAY LEAD TO CONFUSION ABOUT WHAT SYS SHOULD BE PLACARDED AND HOW THIS MEL SHOULD BE DOCUMENTED BY THE FLT CREW. ALTHOUGH THIS WOULD FALL UNDER RISK ASSESSMENT CODE 4 OR 5; PLEASE CONSIDER ADDRESSING THIS FORAC WITH MAINT AND PUBS. MEL VERBIAGE CLARIFICATION.
Data retrieved from NASA's ASRS site as of May 2009 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.