Narrative:

I was assigned the anti-skid control valve union filter cleaning task card on a raytheon beech jet 400 aircraft while working in the hangar for air carrier X at ZZZ. I performed the task in accordance with the hawker 400/400A maintenance manual (M/M) 32-40-00. When I was reinstalling the lines I mixed up the aft hydraulic pressure lines to the valve. The lines were not hard to install in this way and the installation seemed right to me. I had my lead mechanic buy-back [verify] the work. We ended up job stopping the task; with the brake bleeding and anti-skid control check still needing to be accomplished. The lines still got mixed up even though the lines were tagged. I could have taken a picture of the valve before I started the task. This would probably have prevented the lines from being installed wrong because I would have referenced the maintenance manual (M/M) and the picture. The anti-skid brake system check in the maintenance manual says to push both brakes at the same time during the check. A revision to the manual that would require each brake to be checked individually and verify proper operation probably would have caught the problem in maintenance. The repair station could adopt a policy of requiring a run/taxi after brake maintenance procedures. This would have caught the problem while it was still in maintenance. Graveyard shift. Gate-turn back.

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Original NASA ASRS Text

Title: Three Aircraft Maintenance Technicians report about their involvement with a power brake anti-skid control valve filter change and power brake bleeding procedure that resulted in a gate return of a BE-400A aircraft. Flight crew noted the left pedal controlled the right pedal and the right pedal controlled the left pedal.

Narrative: I was assigned the Anti-Skid Control Valve union filter cleaning Task Card on a Raytheon Beech jet 400 aircraft while working in the hangar for Air Carrier X at ZZZ. I performed the task in accordance with the Hawker 400/400A Maintenance Manual (M/M) 32-40-00. When I was reinstalling the lines I mixed up the aft hydraulic pressure lines to the valve. The lines were not hard to install in this way and the installation seemed right to me. I had my Lead Mechanic buy-back [verify] the work. We ended up job stopping the task; with the Brake Bleeding and Anti-Skid Control Check still needing to be accomplished. The lines still got mixed up even though the lines were tagged. I could have taken a picture of the valve before I started the task. This would probably have prevented the lines from being installed wrong because I would have referenced the Maintenance Manual (M/M) and the picture. The Anti-Skid Brake System Check in the Maintenance Manual says to push both brakes at the same time during the Check. A revision to the manual that would require each brake to be checked individually and verify proper operation probably would have caught the problem in maintenance. The Repair Station could adopt a policy of requiring a run/taxi after brake maintenance procedures. This would have caught the problem while it was still in maintenance. Graveyard shift. Gate-turn back.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.