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A lead mechanic reports that during the cleaning of the left fuel feeder tank on an ATR-72 aircraft for an MEL item left fuel low level light 'on' deferral; fuel contamination was found. Mechanic also notes that results from the fuel tank analysis were not in the engineering document that is used used to determine the direction of the work scope.
| Attributes | |
| ACN | 927021 |
| Time | |
| Date | 201012 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | ATR 72 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Fuel Tank |
| Person 1 | |
| Function | Lead Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
An ATR-72-200 aircraft was in december 2010; to work MEL 28-14 (left fuel low level light on); in which the left feeder tank needed cleaning using an engineering order (eo). The cleaning of the feeder tank revealed fuel contamination; an analysis was taken and send to the lab. The results from the analysis were not given to the mechanic who issued the deferral item. The level of contamination should be in this deferral item from the first analysis to determine the direction of the work scope. The engineering notes used as a reference to defer [the left fuel low level light 'on'] refer to service information letter (sil) ATR 42-28-5001 for ATR 42 and 72 aircraft. This sil is not in our ATR-72 sil book. So can we use this sil procedure?
Original NASA ASRS Text
Title: A Lead Mechanic reports that during the cleaning of the left fuel feeder tank on an ATR-72 aircraft for an MEL item left fuel low level light 'On' deferral; fuel contamination was found. Mechanic also notes that results from the fuel tank analysis were not in the Engineering document that is used used to determine the direction of the work scope.
Narrative: An ATR-72-200 aircraft was in December 2010; to work MEL 28-14 (Left Fuel Low Level Light on); in which the left feeder tank needed cleaning using an Engineering Order (EO). The cleaning of the feeder tank revealed fuel contamination; an analysis was taken and send to the Lab. The results from the analysis were not given to the Mechanic who issued the Deferral Item. The level of contamination should be in this deferral item from the first analysis to determine the direction of the work scope. The Engineering Notes used as a reference to defer [the left fuel low level light 'on'] refer to Service Information Letter (SIL) ATR 42-28-5001 for ATR 42 and 72 aircraft. This SIL is not in our ATR-72 SIL book. So can we use this SIL procedure?
Data retrieved from NASA's ASRS site as of April 2012 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.