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Crj-700 aircraft had mis-pinned lavatory light dimmer connectors. The engineering order diagram to deactivate dimmer was misleading.
| Attributes | |
| ACN | 731652 |
| 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 | 731652 |
| Events | |
| Anomaly | maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : briefing performance deficiency : installation performance deficiency : training performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Engineering Order |
Narrative:
I performed engineering order on aircraft on mar/sat/07. I installed jumper wire from TB5026 to ps92p2 pin #3 in error due to the misleading illustration in engineering order that shows ps92p1 as #2 in the bottom right of the dimmer (ballast) PS92. On both aircraft there was no label or stating the plug (connector) number. I did not look at the top plug (connector) because of the illustration. I did the operational test of the light in accordance with engineering order and it tested good. I was talking with another mechanic and shown that there was a label zip tied to the wire bundle that goes into the top left of the dimmer (ballast) PS92 that reads ps92p1.
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 PERFORMED ENGINEERING ORDER ON ACFT ON MAR/SAT/07. I INSTALLED JUMPER WIRE FROM TB5026 TO PS92P2 PIN #3 IN ERROR DUE TO THE MISLEADING ILLUSTRATION IN ENGINEERING ORDER THAT SHOWS PS92P1 AS #2 IN THE BOTTOM R OF THE DIMMER (BALLAST) PS92. ON BOTH ACFT THERE WAS NO LABEL OR STATING THE PLUG (CONNECTOR) NUMBER. I DID NOT LOOK AT THE TOP PLUG (CONNECTOR) BECAUSE OF THE ILLUSTRATION. I DID THE OPERATIONAL TEST OF THE LIGHT IN ACCORDANCE WITH ENGINEERING ORDER AND IT TESTED GOOD. I WAS TALKING WITH ANOTHER MECH AND SHOWN THAT THERE WAS A LABEL ZIP TIED TO THE WIRE BUNDLE THAT GOES INTO THE TOP L OF THE DIMMER (BALLAST) PS92 THAT READS PS92P1.
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.