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An aircraft maintenance technician (amt) and an aircraft maintenance inspector give their perspective as to why a locking nut that secures a vsv actuator fork end bolt to the stator vane bellcrank input rod on a V2500 engine was found missing during an a-check inspection. The A321 flew 31-days without any vsv discrepancies on the right engine. Undocumented maintenance or sub-standard aircraft hardware are believed to be contributors.
| Attributes | |
| ACN | 1209189 |
| Time | |
| Date | 201409 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | A321 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Compressor Stator/Vane |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Person 2 | |
| Function | Inspector |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Experience | Maintenance Inspector 15 Maintenance Technician 20 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural FAR Deviation - Procedural Published Material / Policy |
Narrative:
September 2014 was assigned to an airbus A321 with job card (J/C) XXXX09 for # 1 and # 2 engine wash. This task was accomplished I.a.west to the letter of J/C XXXX09 as witnessed by inspection department. This aircraft flew for 31-days with no issues to vsv/bleed problems. Suspect undocumented maintenance was performed between september and october 2014. As stated; with nut missing; this condition would be impossible in this timetable not to have a failure. Event took place at ZZZ hangar north side. Found during an a-check. Suspect undocumented maintenance performed at multiple maintenance station visits between september and october 2014. Reference logbook for non-routine line log 'remove and replaced actuator rod end bolt and nut aircraft maintenance manual (amm) 75-32-41-400. No other defects noted; signed by inspection. [Recommend that] all maintenance require proper documentation.
Original NASA ASRS Text
Title: An Aircraft Maintenance Technician (AMT) and an Aircraft Maintenance Inspector give their perspective as to why a locking nut that secures a VSV Actuator Fork End bolt to the Stator Vane Bellcrank input rod on a V2500 engine was found missing during an A-Check Inspection. The A321 flew 31-days without any VSV discrepancies on the right engine. Undocumented maintenance or sub-standard aircraft hardware are believed to be contributors.
Narrative: September 2014 was assigned to an Airbus A321 with Job Card (J/C) XXXX09 for # 1 and # 2 Engine Wash. This task was accomplished I.A.W to the letter of J/C XXXX09 as witnessed by inspection department. This aircraft flew for 31-days with no issues to VSV/Bleed problems. Suspect undocumented maintenance was performed between September and October 2014. As stated; with nut missing; this condition would be impossible in this timetable not to have a failure. Event took place at ZZZ Hangar north side. Found during an A-Check. Suspect undocumented maintenance performed at multiple maintenance station visits between September and October 2014. Reference Logbook for Non-routine Line log 'remove and replaced actuator rod end bolt and nut Aircraft Maintenance Manual (AMM) 75-32-41-400. No other defects noted; signed by Inspection. [Recommend that] all maintenance require proper documentation.
Data retrieved from NASA's ASRS site 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.