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Aircraft equipment problem. Low reverser accumulator light. Questionable acceptable dispatch. MEL. Maintenance coordinator tells pilots that it's ok to have the low pressure light on prior to hydraulic pressure. But, light must go out with pressure.
| Attributes | |
| ACN | 337147 |
| Time | |
| Date | 199605 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mob |
| State Reference | AL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 82 flight time total : 9100 flight time type : 82 |
| ASRS Report | 337147 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
For second time in 2 weeks, maintenance coordinators have been telling pilots that it's ok to fly with a low reverser accumulator pressure light illuminated and low pressure indicated on direct reading dial as long as light goes out with hydraulic pressure turned on. The precharge is svced with nitrogen and not recharged with hydraulic pressure. The light goes out because the precharge is compressed by system pressure and the direct dial in fact reads system pressure. I have pilot group looking into it. It appears that maintenance is trying to get around servicing or rendering the system inoperative with contract maintenance at non maintenance stations.
Original NASA ASRS Text
Title: ACFT EQUIP PROB. LOW REVERSER ACCUMULATOR LIGHT. QUESTIONABLE ACCEPTABLE DISPATCH. MEL. MAINT COORDINATOR TELLS PLTS THAT IT'S OK TO HAVE THE LOW PRESSURE LIGHT ON PRIOR TO HYD PRESSURE. BUT, LIGHT MUST GO OUT WITH PRESSURE.
Narrative: FOR SECOND TIME IN 2 WKS, MAINT COORDINATORS HAVE BEEN TELLING PLTS THAT IT'S OK TO FLY WITH A LOW REVERSER ACCUMULATOR PRESSURE LIGHT ILLUMINATED AND LOW PRESSURE INDICATED ON DIRECT READING DIAL AS LONG AS LIGHT GOES OUT WITH HYD PRESSURE TURNED ON. THE PRECHARGE IS SVCED WITH NITROGEN AND NOT RECHARGED WITH HYD PRESSURE. THE LIGHT GOES OUT BECAUSE THE PRECHARGE IS COMPRESSED BY SYS PRESSURE AND THE DIRECT DIAL IN FACT READS SYS PRESSURE. I HAVE PLT GROUP LOOKING INTO IT. IT APPEARS THAT MAINT IS TRYING TO GET AROUND SVCING OR RENDERING THE SYS INOP WITH CONTRACT MAINT AT NON MAINT STATIONS.
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.