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A B767-300 aircraft rh engine core cowl latches were found with excessive side play and no cotter pins on any of the latch attach bolt ends.
| Attributes | |
| ACN | 756797 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 756797 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : engineering procedure |
| Supplementary | |
| Problem Areas | Company Chart Or Publication |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | MM Procedures Not Correct |
Narrative:
Found core cowl latch with excessive side play on r-hand engine. During removal I noticed there was no cotter pin on this latch or any of the other core cowl latches. Per maintenance manual; latches are safetied with cotter pins. There weren't any holes for the cotter pins on the shanks of the bolts. Callback conversation with reporter revealed the following information: reporter stated his carrier's MM installation procedures and pictures called out for the attaching bolts that secure the latches to the core cowl to have the bolt ends with drilled shanks to receive a cotter key and have sealant applied as part of the safety and security of the latch installations. Reporter noted that after he brought the issue up; his company's engineering reviewed the MM and will make a revision to use the non-cotter key latch bolt installation procedure for the core cowl latches.
Original NASA ASRS Text
Title: A B767-300 ACFT RH ENGINE CORE COWL LATCHES WERE FOUND WITH EXCESSIVE SIDE PLAY AND NO COTTER PINS ON ANY OF THE LATCH ATTACH BOLT ENDS.
Narrative: FOUND CORE COWL LATCH WITH EXCESSIVE SIDE PLAY ON R-HAND ENG. DURING REMOVAL I NOTICED THERE WAS NO COTTER PIN ON THIS LATCH OR ANY OF THE OTHER CORE COWL LATCHES. PER MAINT MANUAL; LATCHES ARE SAFETIED WITH COTTER PINS. THERE WEREN'T ANY HOLES FOR THE COTTER PINS ON THE SHANKS OF THE BOLTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: REPORTER STATED HIS CARRIER'S MM INSTALLATION PROCEDURES AND PICTURES CALLED OUT FOR THE ATTACHING BOLTS THAT SECURE THE LATCHES TO THE CORE COWL TO HAVE THE BOLT ENDS WITH DRILLED SHANKS TO RECEIVE A COTTER KEY AND HAVE SEALANT APPLIED AS PART OF THE SAFETY AND SECURITY OF THE LATCH INSTALLATIONS. REPORTER NOTED THAT AFTER HE BROUGHT THE ISSUE UP; HIS COMPANY'S ENGINEERING REVIEWED THE MM AND WILL MAKE A REVISION TO USE THE NON-COTTER KEY LATCH BOLT INSTALLATION PROCEDURE FOR THE CORE COWL LATCHES.
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.