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Several grob 120A training aircraft were operated with improved engine cooling baffles installed by a service bulletin with no reference to the service bulletin entered in the maintenance logbook.
| Attributes | |
| ACN | 568243 |
| Time | |
| Date | 200212 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | other |
| Function | maintenance : inspector maintenance : technician |
| Qualification | technician : inspection authority technician : fcc technician : powerplant technician : airframe |
| Experience | maintenance technician : 10 |
| ASRS Report | 568243 |
| Person 2 | |
| Affiliation | other |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Company Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Company |
| Situations | |
| Publication | Service Bulletin |
Narrative:
Engine cooling baffles have been failing at a tremendous rate and so the manufacturer supplied alternate baffles and a service bulletin (osb 1121-022) for the installation of these baffles. During an unscheduled audit of paperwork, it was discovered that several of these baffles had been installed and no maintenance records of the service bulletin compliance had been made. Entries had been made for the replacement of the baffles, but no reference to the service bulletin had been recorded. Technicians on floor were unaware and parts department as well as supervisors failed to properly inform their workers about the service bulletin/alternate baffles.
Original NASA ASRS Text
Title: SEVERAL GROB 120A TRAINING ACFT WERE OPERATED WITH IMPROVED ENG COOLING BAFFLES INSTALLED BY A SVC BULLETIN WITH NO REF TO THE SVC BULLETIN ENTERED IN THE MAINT LOGBOOK.
Narrative: ENG COOLING BAFFLES HAVE BEEN FAILING AT A TREMENDOUS RATE AND SO THE MANUFACTURER SUPPLIED ALTERNATE BAFFLES AND A SVC BULLETIN (OSB 1121-022) FOR THE INSTALLATION OF THESE BAFFLES. DURING AN UNSCHEDULED AUDIT OF PAPERWORK, IT WAS DISCOVERED THAT SEVERAL OF THESE BAFFLES HAD BEEN INSTALLED AND NO MAINT RECORDS OF THE SVC BULLETIN COMPLIANCE HAD BEEN MADE. ENTRIES HAD BEEN MADE FOR THE REPLACEMENT OF THE BAFFLES, BUT NO REF TO THE SVC BULLETIN HAD BEEN RECORDED. TECHNICIANS ON FLOOR WERE UNAWARE AND PARTS DEPT AS WELL AS SUPVRS FAILED TO PROPERLY INFORM THEIR WORKERS ABOUT THE SVC BULLETIN/ALTERNATE BAFFLES.
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.