2002-05 · NASA ASRS report 549876
A B737-300 WAS RELEASED FOR SVC IN NON COMPLIANCE WITH INCOMPLETE ENG STALL INSPECTIONS NOT ACCOMPLISHED DUE TO A PUB DEFICIENCY.
THE FOLLOWING INFO IS TO THE BEST OF MY KNOWLEDGE AND THE BEST OF WHAT I CAN REMEMBER ON MAY/WED/02. THE CREW ON THE ACFT RPTED TO ME IN MAINT CTL THAT WHILE COMING OUT OF REVERSE THRUST AFTER LNDG; A SLIGHT POP AND FLASH OF LIGHT ON R SIDE OF ACFT. ALL ENG PARAMETERS NEVER FLUCTUATED; BUT SOUNDED LIKE A COMPRESSOR STALL. I THEN TALKED TO DISPATCH AND WE TERMINATED THE ACFT. SINCE WE DECIDED TO TREAT THIS AS A #2 ENG COMPRESSOR STALL; I TYPED IN COMPRESSOR STALL IN THE COMPUTER SEARCH ENG AND IT LED ME TO MAINT MANUAL REF 71-00-00-2 SECTION J 'COMPRESSOR STALL.' MAINT INSPECTED #2 ENG PER MAINT MANUAL -- NO DAMAGE NOTED. CHKED VSV/VBV RIG PER MAINT MANUAL -- WITHIN TOLERANCE. PERFORMED HIGH PWR ENG RUN -- OPS CHKED NORMAL. PERFORMED HIGH SPD TAXI WITH REVERSE THRUST OP -- OPS CHKED NORMAL. NO COMPRESSOR STALL NOTED AND ALL ENG PARAMETERS CHKED NORMAL. OK FOR CONTINUED SVC AT THIS TIME PER MAINT MANUAL. I FELT VERY COMFORTABLE WITH THE MAINT THAT WAS PERFORMED AND PER MAINT MANUAL REF 71-00-00-2 SECTION J SUBTASK 4 STEP (C) WHICH STATES: 'IF THE COMPRESSOR STALL DOES NOT OCCUR AGAIN AND THE EGT AND THE N2% RPM INDICATIONS ARE NORMAL; CONTINUE WITH ENG OP.' WE FELT THIS WAS THE FINAL STEP SINCE NO COMPRESSOR STALL WAS DUPLICATED AND ALL ENG PARAMETERS CHKED NORMAL. THE WAY I READ THE FINAL 2 STEPS IN MAINT MANUAL REF 71-00-00-2 SECTION J SUBTASK 4 STEP (D) IS: IF THE COMPRESSOR STALL OCCURS AGAIN; OR IF THE STALL DOES NOT CLR SATISFACTORILY; OPERATE THE ENG AT LOW IDLE PWR FOR 3 MINS AND THEN SHUT DOWN THE ENG. THEN GO TO SUBTASK 4 STEP (E) -- DO THE ENG STALL (SURGE) INSPECTION (AMM 72-00-00/60I). I WAS INFORMED ON JUN/SUN/02 THAT A BORESCOPE (ENG STALL (SURGE) INSPECTION (AMM 72-00-00/602)) SHOULD HAVE ALSO BEEN COMPLIED WITH ON ACFT #2 ENG MAY WED/02. I FEEL THAT IF SUBTASK 4 STEP (E) NEEDED TO BE COMPLIED WITH; THEN STEP (C) SHOULD BE STATED AS FOLLOWS: IF THE COMPRESSOR STALL DOES NOT OCCUR AGAIN AND THE EGT AND THE N2% RPM INDICATIONS ARE NORMAL; CONTINUE WITH THE ENG OP -- BUT MAKE SURE TO ALSO COMPLY WITH STEP (E) -- DO THE ENG STALL (SURGE) INSPECTION (AMM 72-00-00/60I).
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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