Following snags were involved in disruptions for the month of December 2019-
Hard landing was reported four times whereas FUEL FILTER CLOG Warning was a cause of disruptions for six times for the month under review.
ENGINE STALL was reported thrice on the fleet and was a reason for AOG on these occasions.ENGINE VIBRATIONS and BIRD HIT were also reported thrice separately and were a reason of grounding and delays.
There were two cases of HYDRAULIC FAILURE too was reported on the fleet during this month.
Few snags which resulted in an inconvenience to passengers and AOG are discussed in brief:-
PPA on 1/12 while on 440 obsd crack of 8 to 9 mm on Fan blade no-10 which was rectified by replacing blade 10 $ 28.
EXH/DEL/023 on dated 3/12 was delayed due HYD G RSVR LO LEVEL and on further investigation a leak was obsd from Engine 1 pylon area. Acft was brought to service after replacing Pipe line D2902083800000.
PPQ/BOM/985 dated 07/12 was AOG due Normal Brake Fault for which Normal brake Servo Valve 16GG was replaced.
PPF/DEL/018 on dated 09/12 was delayed due BIRD HIT on ENG2. BSI c/o and qty 08 Blade were replaced to service the acft.
PPQ/RPR/651 dated 10/12 L/G Shock absorber Fault and EGT Exceedance to 962 drg Cel were reported at RPR. Acft was further ferried to BOM for corrective action prior to that LGCIU1&2 were replaced but snag persisted.Final action awaited.
SCP/DIB/705 dated 11/12 stuck up due Engine 1 Stall at FL 370,IPCV was replaced as part of rectification.
SCF/DEL/822 dated 13/12 was on AOG due P/R Eng 1 Stall.IP Check Valve found sluggish and flapper movement was out of tolerance. IPCV replaced to service the acft.
SCM/DEL/496 dated 14/12 was delayed due P/R T/R UNLOCK message for which HCU was replaced.
CIO/BOM/922 on 18/12 reported ENG2 N2 Vibration High.Finally as a part of rectification,Engine was replaced.
PPL/DEL/683 on dated 19/12 reported a snag of ENG 2 N1 Vibration high.Blade lubrication and rescheduling was carried out.
SCV/BOM/887 Dated 20/12 had an emergency landing due HYD Y RSVR LO LEVEL.On investigation obsd seal damage in pressure line,same replaced to service the acft.
PPI/DEL/973 on dated 21/12 had an ATB due ENGINE1 COMP VANE FAULT; HMU was replaced to brought the acft in service.
EDD/VNS/427 dated 21/12 was on AOG due ENG2 not starting.On further investigation,Engine 2 Starter Shaft found shear.Starter replaced.
EXF/DEL/335 dated 28/12 ramp returned due Elevator Servo Fault. ELAC 1 Pitch Fault.Snag was initially rectified by resetting the CB but returned back by reporting heavy fuel smell in the cabin.
PPT/DEL/452 dated 29/12 stuck due Brakes Released and FCDC2 Fault.During the process of rectification 19GG Pin E wire found adrift,Connector was replaced.
SCF/BHO/635 dated 30/12 had a P/R "ENGINE 1 Stall".IPCV and HP Bleed Valve were replaced.
PPV/TRV/048 dated 31/12 Obsd VHF antenna sheared during walk around inspection.VHF Anetnna was replaced.
EDF/BDQ/819 dated 31/12 #1 Fan Vibration high,Vibration reached to 5.5 above 1500.Engine to be replaced and positioned as part of rectification.
Regards,
-Pramodara
Hard landing was reported four times whereas FUEL FILTER CLOG Warning was a cause of disruptions for six times for the month under review.
ENGINE STALL was reported thrice on the fleet and was a reason for AOG on these occasions.ENGINE VIBRATIONS and BIRD HIT were also reported thrice separately and were a reason of grounding and delays.
There were two cases of HYDRAULIC FAILURE too was reported on the fleet during this month.
Few snags which resulted in an inconvenience to passengers and AOG are discussed in brief:-
PPA on 1/12 while on 440 obsd crack of 8 to 9 mm on Fan blade no-10 which was rectified by replacing blade 10 $ 28.
EXH/DEL/023 on dated 3/12 was delayed due HYD G RSVR LO LEVEL and on further investigation a leak was obsd from Engine 1 pylon area. Acft was brought to service after replacing Pipe line D2902083800000.
PPQ/BOM/985 dated 07/12 was AOG due Normal Brake Fault for which Normal brake Servo Valve 16GG was replaced.
PPF/DEL/018 on dated 09/12 was delayed due BIRD HIT on ENG2. BSI c/o and qty 08 Blade were replaced to service the acft.
PPQ/RPR/651 dated 10/12 L/G Shock absorber Fault and EGT Exceedance to 962 drg Cel were reported at RPR. Acft was further ferried to BOM for corrective action prior to that LGCIU1&2 were replaced but snag persisted.Final action awaited.
SCP/DIB/705 dated 11/12 stuck up due Engine 1 Stall at FL 370,IPCV was replaced as part of rectification.
SCF/DEL/822 dated 13/12 was on AOG due P/R Eng 1 Stall.IP Check Valve found sluggish and flapper movement was out of tolerance. IPCV replaced to service the acft.
SCM/DEL/496 dated 14/12 was delayed due P/R T/R UNLOCK message for which HCU was replaced.
CIO/BOM/922 on 18/12 reported ENG2 N2 Vibration High.Finally as a part of rectification,Engine was replaced.
PPL/DEL/683 on dated 19/12 reported a snag of ENG 2 N1 Vibration high.Blade lubrication and rescheduling was carried out.
SCV/BOM/887 Dated 20/12 had an emergency landing due HYD Y RSVR LO LEVEL.On investigation obsd seal damage in pressure line,same replaced to service the acft.
PPI/DEL/973 on dated 21/12 had an ATB due ENGINE1 COMP VANE FAULT; HMU was replaced to brought the acft in service.
EDD/VNS/427 dated 21/12 was on AOG due ENG2 not starting.On further investigation,Engine 2 Starter Shaft found shear.Starter replaced.
EXF/DEL/335 dated 28/12 ramp returned due Elevator Servo Fault. ELAC 1 Pitch Fault.Snag was initially rectified by resetting the CB but returned back by reporting heavy fuel smell in the cabin.
PPT/DEL/452 dated 29/12 stuck due Brakes Released and FCDC2 Fault.During the process of rectification 19GG Pin E wire found adrift,Connector was replaced.
SCF/BHO/635 dated 30/12 had a P/R "ENGINE 1 Stall".IPCV and HP Bleed Valve were replaced.
PPV/TRV/048 dated 31/12 Obsd VHF antenna sheared during walk around inspection.VHF Anetnna was replaced.
EDF/BDQ/819 dated 31/12 #1 Fan Vibration high,Vibration reached to 5.5 above 1500.Engine to be replaced and positioned as part of rectification.
Regards,
-Pramodara
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