AN MD80 WAS DISPATCHED WITH THE AUTO GND SPOILERS DEFERRED AS INOP BUT THE MEL SPECIAL PROCS WERE ACCOMPLISHED IMPROPERLY.

Date: 1998-04 · Aircraft: MD-80 Series (DC-9-80) Undifferentiated or Other Model

Anomalies: aircraft-equipment-problem-critical|deviation-discrepancy-procedural-published-material-policy|deviation-discrepancy-procedural-far|other-unspecified

Synopsis

AN MD80 WAS DISPATCHED WITH THE AUTO GND SPOILERS DEFERRED AS INOP BUT THE MEL SPECIAL PROCS WERE ACCOMPLISHED IMPROPERLY.

Narrative

ON APR/XA/98 I WAS CALLED IN TO MEL THE AUTOSPOILER SYS ON ACFT XYZ; AN MD80 TYPE ACFT. THE MEL CALLS FOR SPECIAL PROC TO DETERMINE AUTOSPOILER ACTUATOR POS AND; IF NECESSARY; TO MOVE THE ACTUATOR TO THE FLT MODE. I DETERMINED THE ACTUATOR NEEDED TO BE MOVED TO THE FLT MODE POS. THE ACR SPECIAL PROCS CALL FOR THE FOLLOWING: 1) PULL AND COLLAR THE 115 VAC CIRCUIT BREAKER. 2) REMOVE THE ACTUATOR COVER. 3) WRENCH THE ACTUATOR TO THE FLT MODE. 4) REPLACE THE ACTUATOR COVER. I REFERRED TO THE MAINT MANUAL FOR A PICTURE OF THE PROPER ACTUATOR POS AND ALSO NOTED THE DIFFERENCE IN DEACTIVATION PROCS BTWN THE 2 MANUALS. I SOON FOUND I WAS UNABLE TO MOVE THE ACTUATOR TO THE FLT MODE AND THEN I REFERRED TO THE MAINT MANUAL PROC. THIS CALLS FOR REMOVING THE CANNON PLUG FROM THE ACTUATOR AND SECURING IT; THEN DISCONNECTING THE ACTUATOR CTL ARM FROM THE PUSHROD AND MANUALLY ROTATING THE ACTUATOR CTL ARM TO THE FLT MODE. ABOUT 45 MINS AFTER SCHEDULED DEP TIME; I WAS FINALLY ABLE TO MOVE THE ACTUATOR TO THE FLT MODE. AT THIS TIME I WAS INTERRUPTED BY THE CUSTOMER SVC STATION MGR WITH A MESSAGE FROM XXX MAINT CTL. SHE AGREED TO NOTIFY XXX I WAS PUTTING THE ACFT BACK TOGETHER. I PROCEEDED TO CLOSE THE ACFT UP AND ACCOMPLISH THE PAPERWORK FOR THE MEL PROC. BEFORE I WAS ABLE TO COMPLETE THE LOGBOOK; I WAS INTERRUPTED AGAIN; QUESTIONING WHEN THE ACFT WOULD BE READY DUE TO THE LONGER THAN EXPECTED DELAY. AFTER THE ACFT DEPARTED; WHILE DOING MY COMPUTER ENTRY; I REMEMBERED I HAD INTENDED TO TAKE A CIRCUIT BREAKER COLLAR WITH ME TO COLLAR THE PULLED 115 VAC CIRCUIT BREAKER WHEN I GAVE THE LOGBOOK TO THE CREW. I ALSO BEGAN TO WONDER IF I MAY HAVE INADVERTENTLY LEFT A SPRING DISCONNECTED AFTER I PUT THE PUSHROD BACK ON THE ACTUATOR CTL LEVER. I THEN CALLED XXX MAINT CTL AND TOLD THE FOREMAN ON DUTY WHAT I THOUGHT I MAY HAVE FORGOTTEN TO DO. HE ADVISED ME HE WOULD HAVE IT CHKED DOWNLINE AT THE NEXT STATION AND REMINDED ME THAT I HAD DEACTIVATED THE SYS AND IT WOULD NOT BE USED. THE FIRST; AND BIGGEST; CONTRIBUTING FACTOR IS THAT I ALLOWED MYSELF TO BE RUSHED. IT SEEMED LIKE A 10-15 MIN JOB BUT TOOK AN HR. THE MAINT MANUAL DOES HAVE A STEP FOR REMOVING THE SPRING FOR ACTUATOR REMOVAL BUT DOESN'T MENTION IT DURING ACTUATOR DEACTIVATION. THE MEL SPECIAL PROC COULD ALSO USE A PICTURE OF THE ACTUATOR IN THE FLT AND GND MODES.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.