B737 Undifferentiated or Other Model
Maintenance Airframe; Maintenance Avionics; Maintenance Powerplant
Maintenance Avionics 30; Maintenance Inspector 2; Maintenance Lead Technician 10; Maintenance Technician 25
Communication Breakdown; Workload; Human-Machine Interface; Situational Awareness; Time Pressure; Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem; Flight Crew Returned To Departure Airport; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed; General Maintenance Action
Incorrect / Not Installed / Unavailable Part; Human Factors; Aircraft; Procedure
While replacing a radar transceiver; the pitot line to the Captain's ADM (Air Data Module) was removed to help make room for transceiver removal. After installation the line was not reinstalled. The root cause was not attaching a red streamer to the line to remind myself to hook line back up after the installation and troubleshooting of the radar.
Technician reported not reinstalling the Captain's Air Data Module after troubleshooting and installing the radar transceiver; causing an air turn back and precautionary landing.