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A B737 was released for service with #5 flap track shroud position faster castellated nut missing a cotter pin.
| Attributes | |
| ACN | 669168 |
| Time | |
| Date | 200508 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 669168 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
On the morning of aug/mon/05; I had installed the #5 flap track shroud. After the start of my work shift on the evening of aug/sun/05; I realized that I may have forgotten to install a cotter pin on the castellated nut that holds the #5 flap track shroud in place. I immediately told my lead who then called maintenance control to have the aircraft looked at to see if the cotter pin was installed or not. At around XA30 on aug/wed/05; I was told that there was not a cotter pin installed in the castellated nut. The mechanic who inspected the castellated nut re-torqued and secured the nut with a cotter pin. From now on; I will have to doublechk all my work to make sure everything is secured.
Original NASA ASRS Text
Title: A B737 WAS RELEASED FOR SVC WITH #5 FLAP TRACK SHROUD POS FASTER CASTELLATED NUT MISSING A COTTER PIN.
Narrative: ON THE MORNING OF AUG/MON/05; I HAD INSTALLED THE #5 FLAP TRACK SHROUD. AFTER THE START OF MY WORK SHIFT ON THE EVENING OF AUG/SUN/05; I REALIZED THAT I MAY HAVE FORGOTTEN TO INSTALL A COTTER PIN ON THE CASTELLATED NUT THAT HOLDS THE #5 FLAP TRACK SHROUD IN PLACE. I IMMEDIATELY TOLD MY LEAD WHO THEN CALLED MAINT CTL TO HAVE THE ACFT LOOKED AT TO SEE IF THE COTTER PIN WAS INSTALLED OR NOT. AT AROUND XA30 ON AUG/WED/05; I WAS TOLD THAT THERE WAS NOT A COTTER PIN INSTALLED IN THE CASTELLATED NUT. THE MECH WHO INSPECTED THE CASTELLATED NUT RE-TORQUED AND SECURED THE NUT WITH A COTTER PIN. FROM NOW ON; I WILL HAVE TO DOUBLECHK ALL MY WORK TO MAKE SURE EVERYTHING IS SECURED.
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.