 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Crj-700 aircraft had mis-pinned lavatory light dimmer connectors. The engineering order diagram to deactivate dimmer was misleading.
| Attributes | |
| ACN | 731390 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 731390 |
| Events | |
| Anomaly | maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : briefing performance deficiency : training performance deficiency : installation performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Maintenance Human Performance |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Engineering Order |
Narrative:
I mistakenly connected a jumper wire (performing engineering order) pin #3 on ballast/dimmer connector ps92p2. The jumper wire should have been connected to ballast/dimmer connector ps92p1 pin #3 instead. My operational check upon completion of engineering order was successful. I was working with who was showing me how it was done; as he had performed the same engineering order on the previous day. Engineering order contains a potentially misleading illustration of the components involved. The ballast/dimmer is shown in opposite confign and orientation to actuality. Also connector ps92p1 was not labeled next to the connector; but some ways down the harness on what appears to be a harness label.
Original NASA ASRS Text
Title: CRJ-700 ACFT HAD MIS-PINNED LAVATORY LIGHT DIMMER CONNECTORS. THE ENGINEERING ORDER DIAGRAM TO DEACTIVATE DIMMER WAS MISLEADING.
Narrative: I MISTAKENLY CONNECTED A JUMPER WIRE (PERFORMING ENGINEERING ORDER) PIN #3 ON BALLAST/DIMMER CONNECTOR PS92P2. THE JUMPER WIRE SHOULD HAVE BEEN CONNECTED TO BALLAST/DIMMER CONNECTOR PS92P1 PIN #3 INSTEAD. MY OPERATIONAL CHK UPON COMPLETION OF ENGINEERING ORDER WAS SUCCESSFUL. I WAS WORKING WITH WHO WAS SHOWING ME HOW IT WAS DONE; AS HE HAD PERFORMED THE SAME ENGINEERING ORDER ON THE PREVIOUS DAY. ENGINEERING ORDER CONTAINS A POTENTIALLY MISLEADING ILLUSTRATION OF THE COMPONENTS INVOLVED. THE BALLAST/DIMMER IS SHOWN IN OPPOSITE CONFIGN AND ORIENTATION TO ACTUALITY. ALSO CONNECTOR PS92P1 WAS NOT LABELED NEXT TO THE CONNECTOR; BUT SOME WAYS DOWN THE HARNESS ON WHAT APPEARS TO BE A HARNESS LABEL.
Data retrieved from NASA's ASRS site as of January 2009 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.