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Two aircraft maintenance technicians reported recurring right main landing gear (medium large transport) left/G not unlocked ECAM faults on an A320 aircraft. Aircraft ferried to a line maintenance station with limited resources. Right medium large transport retract actuator replaced. No flight test required. Aircraft departed but returned to field with ECAM advisory message flight left/G down. Found the left/G down vmo (maximum operating speed limit)/mmo (maximum mach operating speed) selection switch (22FP) on the 188VU panel inadvertently left in the left/G down position. Reset switch to left/G 'normal' position.
| Attributes | |
| ACN | 1290978 |
| Time | |
| Date | 201508 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Main Gear |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Person 2 | |
| Function | Lead Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Experience | Maintenance Lead Technician 8 Maintenance Technician 13 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance Deviation - Procedural MEL |
Narrative:
A320 aircraft has a recurring landing gear fault. This time the fault occurred in ZZZ1 and was made a deferred maintenance item (dmi) in ZZZ1. Aircraft ferried to ZZZ with the landing gear lock down. Confirmed the aircraft was in the non-MEL configuration before starting work for the left/G not unlocked ECAM message. The right landing gear retract actuator was ultimately removed and replaced. After all the operation checks were completed and all cockpit indications were normal; cleared dmi for the landing gear indication system. The aircraft took off from ZZZ and returned to the field for flight left/G down indication after gear retraction. Aircraft restricted & advised to 235 knots ECAM message per flight crew and log book entry.after removing and replacing flight controls; landing gear components etc.. After inconvenient chronic or recurring faults; no test flights are required by our air carrier. Inadvertently causing major anxiety and inconveniencing our paying passengers. Prior experience with other operators; a test flight would be required before the aircraft was returned to revenue flight.
Original NASA ASRS Text
Title: Two Aircraft Maintenance Technicians reported recurring Right Main Landing Gear (MLG) L/G Not UNLOCKED ECAM faults on an A320 aircraft. Aircraft ferried to a Line Maintenance Station with limited resources. Right MLG Retract actuator replaced. No Flight Test required. Aircraft departed but returned to field with ECAM Advisory message FLT L/G DOWN. Found the L/G DOWN VMO (Maximum Operating Speed Limit)/MMO (Maximum Mach Operating Speed) selection switch (22FP) on the 188VU panel inadvertently left in the L/G down position. Reset switch to L/G 'Normal' position.
Narrative: A320 Aircraft has a recurring landing gear fault. This time the fault occurred in ZZZ1 and was made a Deferred Maintenance Item (DMI) in ZZZ1. Aircraft ferried to ZZZ with the landing gear lock down. Confirmed the aircraft was in the non-MEL configuration before starting work for the L/G not unlocked ECAM Message. The right landing gear retract actuator was ultimately removed and replaced. After all the operation checks were completed and all cockpit indications were normal; cleared DMI for the Landing Gear Indication System. The aircraft took off from ZZZ and returned to the field for FLT L/G Down indication after gear retraction. Aircraft restricted & advised to 235 knots ECAM message per flight crew and log book entry.After removing and replacing flight controls; landing gear components etc.. after inconvenient chronic or recurring faults; no Test flights are required by our Air Carrier. Inadvertently causing major anxiety and inconveniencing our paying passengers. Prior experience with other operators; a Test Flight would be required before the aircraft was returned to revenue flight.
Data retrieved from NASA's ASRS site 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.