A300
Maintenance Airframe; Maintenance Powerplant
Distraction; Situational Awareness; Time Pressure; Workload
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Gate; Flight Crew Rejected Takeoff; General Maintenance Action
Aircraft; Company Policy; Human Factors; Staffing
An A300 aircraft arrived at the Station with one pilot write-up: # 1 Engine High Pressure Bleed Valve (HPBV) faulted after takeoff from ZZZ1. Repeat write-up. MEL 36-11-03 requires manual lock-out of HP Valve and associated thrust reverser deactivation. The final steps of thrust reverser deactivation; MEL 78-30-01-A include removing electrical connector from directional pilot valve pressure switch. This step had not been accomplished and on takeoff roll; crew was alerted of an associated thrust reverser pressurized fault on the ECAM and aircraft returned to gate. [This is a] one man station [and aircraft had a] short ground time. [Mechanic faced] routine distractions [and was] trying to avoid delay. [Mechanic should] take the time needed to accomplish each published step; self check each published step; avoid distractions [and if needed] take delay.
An Aircraft Maintenance Technician (AMT) reports an A300 aircraft returned to gate after aborting a takeoff roll due to an engine thrust reverser pressurized fault indication on their ECAM for #1 Engine. Technician noted he had failed to remove an electrical connector from the directional pilot valve pressure switch on #1 Engine that was a requirement to defer a High Pressure Bleed Valve (HPBV) fault.