B737-500
Time Pressure
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Human Factors
I was closing a package for an aircraft before the shift started. The aircraft was en route to the gate as I was checking the package. I reviewed the paperwork; parts tags; and tally sheet. It was later discovered in paperwork audit that the tags for the nose landing gear tire replacement was [for 2 different subfleet types]. I had signed the Lead/Supervisor block on these tags and did not notice that they were for two different aircraft types. I also did not catch the different part numbers on the tags or paperwork. I also signed the Lead/Supervisor block on the tally sheet. The aircraft was grounded [at the next station] and Contract Maintenance was called to [install 2 new tires with the proper effectivity] on the nose gear.
[Another Mechanic] and I were working a stabilizer trim problem and [other work]. Earlier in the night; we had changed a main tire. The Supervisor came by and said we needed to change the nose landing gear tires. [The other Mechanic] went to get more paperwork for the stabilizer trim problem; I went to get the nose tire cart. I accomplished changing the tires and filling out the paperwork. We continued work on the stabilizer trim issue. We then moved the aircraft to the hangar.
A Maintenance Technician and Supervisor did not notice that the part number tags for the 2 nose landing gear wheels were different upon installation.