MD-82
Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Confusion; Situational Awareness; Training / Qualification
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Aircraft; Chart Or Publication; Procedure; Logbook Entry; Human Factors; Company Policy
I was assigned an A-Check; the interior [cabin] portion; I had signed my portion off. An FAA Inspector asked me to bring the A-Check paperwork with me. We stopped at the forward [entry] door and he asked if I inspected the forward entry door slide; as per the A-Check Card; [Item] 18 of 41; I said yes. He told me to show him; what I inspected: the [slide] pressure gauge flipped it over to the back-side; checked [slide] routing and expiration date.We proceeded to the aft service door. Again I showed him [slide] pressure gauge in green [band]; flipped [girt bar flap] over; checked expiration of slide routing; it all appeared normal. I stowed the girt bar back on the hook. That is when the [FAA] Inspector asked me to read verbatim; Paragraph 3a. At that point; he pointed out that I did not engage the girt bar and the Velcro on the right side [of the flap] were not properly fastened. I corrected my mistake and made a logbook entry; stating that the Velcro was not properly installed and made a balancing [corrective action] entry: Resecured flap Velcro tab properly; per Maintenance Manual (M/M) on aft galley service door slide. I apologized for my mistake in not attaching girt bar [in floor locks] arming it; and somehow missed not seeing that the Velcro was not attached properly.  I need to pay attention more and ask questions if I do not understand [paperwork] and pay close attention to when revisions are added [to procedures]. There was a revision added on this section [of the A-Check Card]; I'm not sure when; but it was revised January 2012.
A Line Mechanic reports an FAA Inspector pointed out maintenance step procedures that he had failed to accomplish during a Cabin Interior A-Check on an MD-82 aircraft.