Date: 202011
Local time of day: 1801-2400
Location: ZZZ.Airport, US
Aircraft: A320
Operator: Air Carrier
Operating under: Part 121
Flight phase: Parked
Reporter organization: Air Carrier
Reporter function: Lead Technician; Inspector; Technician
Reporter qualification: Maintenance Repairman; Maintenance Avionics; Maintenance Airframe; Maintenance Powerplant
Second reporter function: Lead Technician; Inspector; Technician
Anomaly: Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Maintenance
When detected: Aircraft In Service At Gate
Contributing factors: Company Policy; Human Factors
Primary problem: Company Policy

Narrative: I was assigned to work Aircraft X while contract vendor was working on the RH wing fuel tanks and fuel tank panels were open. Myself and Crew Member informed our Manager and Supervisor of many safety concerns we had on the work being performed by the vendor. Example of [these] concerns are: Fuel tank pre-entry check list was never filled out by vendor or Supervisor; no fuel-gas concentration readings were recorded. Per A320 fleet AMM (Aircraft Maintenance Manual) 28-10-00-910-002-A. Aircraft supposed to have a rope barrier around the entire perimeter of Aircraft and warning sign on four areas per fig. sheet 1 per AMM. The fuel vendor only roped just one section of Aircraft while having open fuel tank covers. Supervisor and Manager ignored our safety concerns of the vendor improper maintenance procedures and directed us to work next to the open fuel tank areas ( L/H pack Bay ). I felt that Management was making me work under unsafe work environment. Contract vendor not following safety procedures per AMM.Contract vendors and Management need to follow all safety precautions and not ignore them.


Second narrative: I was assigned to work Aircraft X while contract vendor was working on the RH wing fuel tanks and fuel tank panels were open. Myself and Crew Member informed our Manager and Supervisor of many safety concerns we had on the work being performed by the vendor. Example of [these] concerns are: Fuel tank pre-entry check list was never filled out by vendor or Supervisor; no fuel-gas concentration readings were recorded. Per A320 fleet AMM (Aircraft Maintenance Manual) 28-10-00-910-002-A. Aircraft supposed to have a rope barrier around the entire perimeter of Aircraft and warning sign on four areas per fig. sheet 1 per AMM. The fuel vendor only roped just one section of Aircraft while having open fuel tank covers. Supervisor and Manager ignored our safety concerns of the vendor improper maintenance procedures and directed us to work next to the open fuel tank areas ( L/H pack Bay ). I feel like the company ignored our safety concerns and put pressure and directed us in working on an unsafe work environment per Aircraft AMM.Contract vendor was not following safety procedures per aircraft maintenance manuals.Contract vendors are required to follow each steps on AMM including completing all documentation of all maintenance performed on Aircraft.


Synopsis: Aircraft Maintenance Technicians reported that proper safety procedures were not followed by the contract vendor while working on aircraft.