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Mechanic, planning to do a ground inverter check, inadvertently pushed the RAT deployment switch which was in proximity to the inverter. Then, neither the mechanic nor the foreman were aware that the stowing of the RAT required a required inspection item. FAA investigated.
| Attributes | |
| ACN | 334513 |
| Time | |
| Date | 199603 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 334513 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
A320 unplanned ram air turbine (RAT) deploy stowed without any inspection. Unaware, at that time, the required inspection item requirement. A foreman was present and witnessed an a&P mechanic stow the RAT. No one was aware of the required inspection item requirement. Callback conversation with reporter revealed the following information: callback to reporter mechanic confirmed the definition of required inspection item plus why the RAT was deployed to start with. Mechanic was doing a static inverter check and pushed the wrong switch. Neither the mechanic nor his foreman were aware that when stowing the RAT, a required inspection item must be applied. Mechanic says that an FAA inspector checked into the situation and cleared him.
Original NASA ASRS Text
Title: MECH, PLANNING TO DO A GND INVERTER CHK, INADVERTENTLY PUSHED THE RAT DEPLOYMENT SWITCH WHICH WAS IN PROX TO THE INVERTER. THEN, NEITHER THE MECH NOR THE FOREMAN WERE AWARE THAT THE STOWING OF THE RAT REQUIRED A REQUIRED INSPECTION ITEM. FAA INVESTIGATED.
Narrative: A320 UNPLANNED RAM AIR TURBINE (RAT) DEPLOY STOWED WITHOUT ANY INSPECTION. UNAWARE, AT THAT TIME, THE REQUIRED INSPECTION ITEM REQUIREMENT. A FOREMAN WAS PRESENT AND WITNESSED AN A&P MECH STOW THE RAT. NO ONE WAS AWARE OF THE REQUIRED INSPECTION ITEM REQUIREMENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: CALLBACK TO RPTR MECH CONFIRMED THE DEFINITION OF REQUIRED INSPECTION ITEM PLUS WHY THE RAT WAS DEPLOYED TO START WITH. MECH WAS DOING A STATIC INVERTER CHK AND PUSHED THE WRONG SWITCH. NEITHER THE MECH NOR HIS FOREMAN WERE AWARE THAT WHEN STOWING THE RAT, A REQUIRED INSPECTION ITEM MUST BE APPLIED. MECH SAYS THAT AN FAA INSPECTOR CHKED INTO THE SIT AND CLRED HIM.
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.