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A total of 4 JT8D-209 engine oil scavenge pumps were assembled incorrectly without the drive gear nut torqued or cotter pin installed.
| Attributes | |
| ACN | 412973 |
| Time | |
| Date | 199808 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 412973 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure non adherence : far |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On aug/xy/98, my crew chief came to me about XX00 and told me we had a problem with pumps. It was brought to my attention that there were 2 pumps, a 4 and 5 that the nut on the drive gear was neither tightened nor safetied with a cotter pin. I then checked the date they were sent out. I checked my log and realized that I had sent out 4 pumps on that day. I then went and found the other 2 pumps and called them to their attention. I am sorry for what has happened. I absolutely did not do this on purpose. It happened on the day before I was going on vacation. I was trying to get these pumps done before I left, so the engine shop would be covered while I was gone on vacation. Therefore, I got in a hurry and forgot to tighten and put cotter pins in all 4 pumps.
Original NASA ASRS Text
Title: A TOTAL OF 4 JT8D-209 ENG OIL SCAVENGE PUMPS WERE ASSEMBLED INCORRECTLY WITHOUT THE DRIVE GEAR NUT TORQUED OR COTTER PIN INSTALLED.
Narrative: ON AUG/XY/98, MY CREW CHIEF CAME TO ME ABOUT XX00 AND TOLD ME WE HAD A PROB WITH PUMPS. IT WAS BROUGHT TO MY ATTN THAT THERE WERE 2 PUMPS, A 4 AND 5 THAT THE NUT ON THE DRIVE GEAR WAS NEITHER TIGHTENED NOR SAFETIED WITH A COTTER PIN. I THEN CHKED THE DATE THEY WERE SENT OUT. I CHKED MY LOG AND REALIZED THAT I HAD SENT OUT 4 PUMPS ON THAT DAY. I THEN WENT AND FOUND THE OTHER 2 PUMPS AND CALLED THEM TO THEIR ATTN. I AM SORRY FOR WHAT HAS HAPPENED. I ABSOLUTELY DID NOT DO THIS ON PURPOSE. IT HAPPENED ON THE DAY BEFORE I WAS GOING ON VACATION. I WAS TRYING TO GET THESE PUMPS DONE BEFORE I LEFT, SO THE ENG SHOP WOULD BE COVERED WHILE I WAS GONE ON VACATION. THEREFORE, I GOT IN A HURRY AND FORGOT TO TIGHTEN AND PUT COTTER PINS IN ALL 4 PUMPS.
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.