Maintenance Powerplant; Maintenance Airframe
Communication Breakdown; Training / Qualification
Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Human Factors; Manuals; Procedure
[Two Maintenance technicians] were called to go on a road trip that had a left emergency exit door squeal. We were told that we would be the only 2 people going on the road trip. We were dispatched via a chartered plane. After boarding the aircraft and reviewing the logbook; we determined that we needed to run the engines and pressurize the aircraft. During the pressurization there was a notable noise coming from the left overwing emergency exit door lower side. We contacted Maintenance Control to update them and told them that we were going to need to open that door and remove it and check the condition of the seal. We asked them for an AMM (Aircraft Maintenance Manual) reference and they stated that we would be using AMM 52-21-11. We went into the aft cargo pit and pinned the [slide inflation] bottle; then proceeded to the cabin and disarmed the door and pinned it. We removed the door and checked the seam and cleaned it; then reinstalled the door; rearmed the door and removed the safety pin. Then we went into the aft cargo pit an unpinned the bottle and closed up the access panel and had the aircraft back into a normal configuration. We ran the engines and pressurized the aircraft again and found no leaks or noises coming from the left overwing emergency exit door. We used the AMM 52-21-11 reference for this task. At no time were we aware of a Job Card that could have been used for the removal and installation of the overwing exit. Prior to leaving on the road trip a question came up as to whether Inspection would be coming on the road trip or not. It was determined by the Duty Manager that Inspection would not be going. After we had returned from the road trip the Inspection Department notified us that there should have been an Inspector present during the installation of the overwing exit door. Assumptions that inspection would not be needed proved to be wrong as the overwing exit door needed to be removed and reinstalled. Send an inspector on a road trip if you think you might need one or not.
[Narrative 2 contained no additional information.]
Two Maintenance technicians were flown to an outlying station to repair a maintenance defect. After they completed the work; and returned to the home station; they were advised that the work they performed should have been verified by an Inspector.