Narrative:

An event occurred subsequent to work I performed on a check on aircraft on mar/tue/97 that airline feels may be connected to me. In reference to aircraft cabin floor vibration above 270 KTS and subsequent phl findings of right inner shroud door outboard forward rod not attached, I must disagree with anyone who attributes responsibility for the vibration and unattached rod to me for several reasons. First, and most importantly, I remember specifically checking the entire area and ensured all was secured during my check at pit. Second, we have had several aircraft in for check that we have found with rods not attached without any previous pilot discrepancies prior to our securing the rods. Third, it is my understanding that vibration occurred 2 days after my check, apparently without any problem before that time. Fourth, it was noted that extensive flap work and engine work were done over several days. I believe it would not take this amount of time to find a rod not attached. It is more likely the rod was removed during the extensive flap work. Fifth, the most likely culprit for cabin vibration, as stated, above 270 KTS are the blowout doors on stub wings. I share in the company's resolve to find the cause to a problem. However, the timing and scenario of my check, vibration occurrence, extensive flap work, days past my check without problem, prior findings of non attached rods without vibration history, and other suspect areas, does not add up to placing the blame on me in even the most remote way.

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Original NASA ASRS Text

Title: A FOKKER 100 RPTED CABIN FLOOR VIBRATION AT 270 KTS. FOUND R INNER SHROUD DOOR SUPPORT ROD NOT ATTACHED.

Narrative: AN EVENT OCCURRED SUBSEQUENT TO WORK I PERFORMED ON A CHK ON ACFT ON MAR/TUE/97 THAT AIRLINE FEELS MAY BE CONNECTED TO ME. IN REF TO ACFT CABIN FLOOR VIBRATION ABOVE 270 KTS AND SUBSEQUENT PHL FINDINGS OF R INNER SHROUD DOOR OUTBOARD FORWARD ROD NOT ATTACHED, I MUST DISAGREE WITH ANYONE WHO ATTRIBUTES RESPONSIBILITY FOR THE VIBRATION AND UNATTACHED ROD TO ME FOR SEVERAL REASONS. FIRST, AND MOST IMPORTANTLY, I REMEMBER SPECIFICALLY CHKING THE ENTIRE AREA AND ENSURED ALL WAS SECURED DURING MY CHK AT PIT. SECOND, WE HAVE HAD SEVERAL ACFT IN FOR CHK THAT WE HAVE FOUND WITH RODS NOT ATTACHED WITHOUT ANY PREVIOUS PLT DISCREPANCIES PRIOR TO OUR SECURING THE RODS. THIRD, IT IS MY UNDERSTANDING THAT VIBRATION OCCURRED 2 DAYS AFTER MY CHK, APPARENTLY WITHOUT ANY PROB BEFORE THAT TIME. FOURTH, IT WAS NOTED THAT EXTENSIVE FLAP WORK AND ENG WORK WERE DONE OVER SEVERAL DAYS. I BELIEVE IT WOULD NOT TAKE THIS AMOUNT OF TIME TO FIND A ROD NOT ATTACHED. IT IS MORE LIKELY THE ROD WAS REMOVED DURING THE EXTENSIVE FLAP WORK. FIFTH, THE MOST LIKELY CULPRIT FOR CABIN VIBRATION, AS STATED, ABOVE 270 KTS ARE THE BLOWOUT DOORS ON STUB WINGS. I SHARE IN THE COMPANY'S RESOLVE TO FIND THE CAUSE TO A PROB. HOWEVER, THE TIMING AND SCENARIO OF MY CHK, VIBRATION OCCURRENCE, EXTENSIVE FLAP WORK, DAYS PAST MY CHK WITHOUT PROB, PRIOR FINDINGS OF NON ATTACHED RODS WITHOUT VIBRATION HISTORY, AND OTHER SUSPECT AREAS, DOES NOT ADD UP TO PLACING THE BLAME ON ME IN EVEN THE MOST REMOTE WAY.

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.