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An MD80 job card to check reduced vertical separation minimum limits on right and left static ports caused confusion on interpretation of maintenance manual and structural repair manual limits.
| Attributes | |
| ACN | 706798 |
| Time | |
| Date | 200608 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | oversight : coordinator |
| ASRS Report | 706798 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| ASRS Report | 706794 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : pitot static ports other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : manuals contributing factor : engineering procedure performance deficiency : inspection performance deficiency : scheduled maintenance performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Maint Manual - Structural Manual |
Narrative:
On aircraft rvsm card number was assigned. I came down to the area where the mechanic was working rvsm to see how everything was going for a turnover for the next shift. There was an engineer; 2 technician crew chief; 2 inspectors and their supervisor; a mechanic and dock supervisor. They were all trying to interpret the maintenance manual structural repair manual and card; about r-hand static port and l-hand altitude static ports. After much delay all parties agreed the area under E58's and 2 were within limits. I was asked to sign E58 being within limits by the inspector; per maintenance manual and structural repair manuals; per figure 18 chart. Contacted engineering and technician crew chief about possible flow chart to help with lack of confusion on card; and maintenance manual and structural repair manual; flipping back and forth; etc.
Original NASA ASRS Text
Title: AN MD80 JOB CARD TO CHK REDUCED VERT SEPARATION MINIMUM LIMITS ON R AND L STATIC PORTS CAUSED CONFUSION ON INTERP OF MAINT MANUAL AND STRUCTURAL REPAIR MANUAL LIMITS.
Narrative: ON ACFT RVSM CARD NUMBER WAS ASSIGNED. I CAME DOWN TO THE AREA WHERE THE MECH WAS WORKING RVSM TO SEE HOW EVERYTHING WAS GOING FOR A TURNOVER FOR THE NEXT SHIFT. THERE WAS AN ENGINEER; 2 TECHNICIAN CREW CHIEF; 2 INSPECTORS AND THEIR SUPVR; A MECH AND DOCK SUPVR. THEY WERE ALL TRYING TO INTERPRET THE MAINT MANUAL STRUCTURAL REPAIR MANUAL AND CARD; ABOUT R-HAND STATIC PORT AND L-HAND ALT STATIC PORTS. AFTER MUCH DELAY ALL PARTIES AGREED THE AREA UNDER E58'S AND 2 WERE WITHIN LIMITS. I WAS ASKED TO SIGN E58 BEING WITHIN LIMITS BY THE INSPECTOR; PER MAINT MANUAL AND STRUCTURAL REPAIR MANUALS; PER FIGURE 18 CHART. CONTACTED ENGINEERING AND TECHNICIAN CREW CHIEF ABOUT POSSIBLE FLOW CHART TO HELP WITH LACK OF CONFUSION ON CARD; AND MAINT MANUAL AND STRUCTURAL REPAIR MANUAL; FLIPPING BACK AND FORTH; ETC.
Data retrieved from NASA's ASRS site as of January 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.