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An aircraft maintenance technician (amt) removed a ni-cad battery from the tail section of a cessna citation 560XL that had been written-up for being very warm. A plastic inner liner installed during battery build-up; which separates the cells from the battery outer case; had improperly extended all the way to the top of the battery and closed off a normal gap required for venting.
| Attributes | |
| ACN | 1252586 |
| Time | |
| Date | 201503 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation Excel (C560XL) |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | DC Battery |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 40 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance |
Narrative:
Battery not assembled properly; installed [inner liner] blocking vent; causing no air flow. Battery deep cycled at [alternate] repair facility january 2015. Evidence of electrolyte leakage. Potassium carbonates (white deposits) on top of all cells; down the inside of case and wedges (spacers). [Recommend] quality checks and check work over [again]. Testing. During general overhaul in shop. General overhaul [of battery] I.a.west. Battery manufacturer's operating maintenance manual (omm) 24.30.99 revision january 2015.
Original NASA ASRS Text
Title: An Aircraft Maintenance Technician (AMT) removed a Ni-Cad battery from the tail section of a Cessna Citation 560XL that had been written-up for being very warm. A plastic inner liner installed during battery build-up; which separates the cells from the battery outer case; had improperly extended all the way to the top of the battery and closed off a normal gap required for venting.
Narrative: Battery not assembled properly; installed [inner liner] blocking vent; causing no air flow. Battery deep cycled at [alternate] Repair Facility January 2015. Evidence of electrolyte leakage. Potassium carbonates (white deposits) on top of all cells; down the inside of case and wedges (spacers). [Recommend] Quality Checks and check work over [again]. Testing. During general overhaul in Shop. General overhaul [of battery] I.A.W. Battery Manufacturer's Operating Maintenance Manual (OMM) 24.30.99 Revision January 2015.
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.