Narrative:

Air carrier aircraft on takeoff out of cleveland. 4 min after takeoff, shut down #2 engine due to loud bang and vibration. Upon arrival cleveland, found #2 engine nose dome on bottom of inlet. Boroscope performed on #2 engine, checked good. Front accessory drive support was damaged. Replaced drive support. #2 engine nose dome was damaged, replaced nose dome. Incident happened on mar/mon/94, in cleveland, repairs done mar/tue/94 in cleveland. On mar/sat/94 in orlando, fl, aircraft arrived at approximately XA15 local. On maintenance walkaround, I found #2 engine nose dome loose. Upon removal of nose dome, found two of 4 nose dome nuts loose. Further inspection showed the studs that the nose dome attachment nuts tighten on, were loose. 1 helicoil for 1 stud was not in front drive accessory support plate. The other stud had only part of a helicoil on it. Maintenance control was contacted. Pwrplant desk asked if helicoils could be replaced. Helicoils were replaced and nose dome was tightened to torque. Pwrplane desk told us aircraft, a 737- 200 with jet engines, would be put on follow-up per maintenance control to replace front accessory drive support nose dome attachments. Aircraft overnighted at 2 main stations and flew 15 legs in 3 days after repair in orlando. Aircraft was dispatched with belief that follow-up maintenance would be scheduled by maintenance control.

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Original NASA ASRS Text

Title: THE ENG NOSE CONE DROPPED DOWN INTO THE COWL CAUSING THE ACFT TO RETURN LAND. THE NOSE CONE AND ACCESSORY DRIVE WERE DAMAGED.

Narrative: ACR ACFT ON TKOF OUT OF CLEVELAND. 4 MIN AFTER TKOF, SHUT DOWN #2 ENG DUE TO LOUD BANG AND VIBRATION. UPON ARR CLEVELAND, FOUND #2 ENG NOSE DOME ON BOTTOM OF INLET. BOROSCOPE PERFORMED ON #2 ENG, CHKED GOOD. FRONT ACCESSORY DRIVE SUPPORT WAS DAMAGED. REPLACED DRIVE SUPPORT. #2 ENG NOSE DOME WAS DAMAGED, REPLACED NOSE DOME. INCIDENT HAPPENED ON MAR/MON/94, IN CLEVELAND, REPAIRS DONE MAR/TUE/94 IN CLEVELAND. ON MAR/SAT/94 IN ORLANDO, FL, ACFT ARRIVED AT APPROX XA15 LCL. ON MAINT WALKAROUND, I FOUND #2 ENG NOSE DOME LOOSE. UPON REMOVAL OF NOSE DOME, FOUND TWO OF 4 NOSE DOME NUTS LOOSE. FURTHER INSPECTION SHOWED THE STUDS THAT THE NOSE DOME ATTACHMENT NUTS TIGHTEN ON, WERE LOOSE. 1 HELICOIL FOR 1 STUD WAS NOT IN FRONT DRIVE ACCESSORY SUPPORT PLATE. THE OTHER STUD HAD ONLY PART OF A HELICOIL ON IT. MAINT CTL WAS CONTACTED. PWRPLANT DESK ASKED IF HELICOILS COULD BE REPLACED. HELICOILS WERE REPLACED AND NOSE DOME WAS TIGHTENED TO TORQUE. PWRPLANE DESK TOLD US ACFT, A 737- 200 WITH JET ENGS, WOULD BE PUT ON FOLLOW-UP PER MAINT CTL TO REPLACE FRONT ACCESSORY DRIVE SUPPORT NOSE DOME ATTACHMENTS. ACFT OVERNIGHTED AT 2 MAIN STATIONS AND FLEW 15 LEGS IN 3 DAYS AFTER REPAIR IN ORLANDO. ACFT WAS DISPATCHED WITH BELIEF THAT FOLLOW-UP MAINT WOULD BE SCHEDULED BY MAINT CTL.

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.