A320
Maintenance Airframe; Maintenance Powerplant
Situational Awareness; Confusion; Communication Breakdown; Training / Qualification
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
General Maintenance Action
Chart Or Publication; Aircraft; Company Policy; Staffing; Procedure; Incorrect / Not Installed / Unavailable Part; Human Factors; Equipment / Tooling
[I; Mechanic X; was] assigned Job Card XXX-010 on an A320 aircraft in our Hangar [in ZZZ]. [I] accomplished Step-1 of Job Card on a V2500 engine. In Part Five of Step-1; [Job Card states] make Thrust Reverser (T/R) unserviceable for Maintenance (Deactivate). Not being familiar with the V2500 Engine Thrust Reverser System; we asked a fellow Mechanic how to deactivate the T/R on the V2500. We used the HYDRAULIC CONTROL UNIT (HCU) Deactivation pin. After pinning HCU; verified [reverser] deactivation per Aircraft Maintenance Manual (AMM) 71-13-00. Thrust Reversers did not deploy upon landing. Step-4 on Job Card [is a problem]. Suggest separate sign-offs and graphics for Deactivation and Activation in Heavy Maintenance Visit (HMV). Manager notified.
While accomplishing Job Card XXX-004; the proper Thrust Reverser (T/R) lockout pins [with streamers] were not installed due to the fact that there are none in ZZZ. I; [Mechanic Y]; was tasked with closing the T/Rs; closing the pylon panels and closing cowlings. Due to the fact that improper pins were installed; there were no streamers [attached to the pins]. The removal of the [Reverser] pins was inadvertently missed and there was no Operational Check of the T/R after Job Card completion. The A320 aircraft left and landed at its next destination where the Thrust Reversers did not deploy on landing.I did not see lockout pins and closed cowlings. Event was identified in the arrival station. I have no information on what happened at that station. Suggest using proper pins with long streamers; change paperwork to have second Mechanic verify pins removed because there is no indication of T/Rs deactivated. Also add to paperwork; Thrust Reverser Operational Check per Aircraft Maintenance Manual (AMM) 78-31-00.
Three Mechanics; unfamiliar with the V2500 engine on A320 aircraft; report about their involvement with installing improper Thrust Reverser lockout pins in the Hydraulic Control Units (HCU). Reversers did not deploy on landing after aircraft was released from Heavy Maintenance Visit (HMV).