Service difficulty report · Actuator · Airbus A320*

Difficulty date
April 2, 2023
Submitted
April 14, 2023
Operation
Air carrier
Aircraft
N188US
Make and model
Airbus A320*
Aircraft serial
1724
Aircraft time
68,389 hours, 26,059 cycles
Engine
Cfmint CFM565B3P
Engine time
26,898 hours, 11,953 cycles
Part
Actuator
Part number
12166613
Part serial
YG200773Y
Condition
Defective
Location
Zone 400 - Nac/P
Part time
63,114 hours, 26,631 cycles
Component
Engine · Cfmint · CFM565B3P
Component part number
1887M10G07
Stage of operation
CL
How discovered
V
Nature of condition
M, O
Precautionary procedure
A, O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO SJU. DURING CLIMB AN ECAM ALERT FOR EGT EXCEEDANCE DISPLAYED FOR THE #2 ENGINE FOLLOWED BY A BANG AND A COMPRESSOR STALL. THE AIRCRAFT LANDED SAFELY AT SJU WITHOUT FURTHER INCIDENT. **SUPPLEMENTAL REPORT FOR AALA202304068570: MAINTENANCE ACCOMPLISHED A BORESCOPE INSPECTION OF THE #2 ENGINE AND NO DEFECTS WERE NOTED. DURING A TEST OF THE VBV SYSTEM ON THE #2 ENGINE IT WAS NOTED THAT THE VBV POSITION SENSOR WAS MISALIGNED AND MAINTENANCE WAS UNABLE TO MOVE THE VBV DOORS. THE VBV MASTER BALLSCREW ACTUATOR WAS REPLACED PER AMM 75-31-50, THE VBV FUEL GEAR MOTOR WAS REPLACED PER AMM 75-31-10 (AALA202304141397), THE VBV STOP MECHANISM WAS REPLACED PER 75-31-20 (AALA202304141775) AND THE VBV POSITION SENSOR WAS REPLACED PER AMM 75-31-70 (AALA202304149949). A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED. ** (CLOSED)