Regional Jet 700 ER/LR (CRJ700)
Maintenance Airframe; Maintenance Powerplant
Troubleshooting
Deviation / Discrepancy - Procedural Maintenance; No Specific Anomaly Occurred Unwanted Situation
General None Reported / Taken
Manuals; Procedure; Human Factors
I have witnessed a potential for aircraft spoiler damage during flap rigging. When rig boards are installed on aircraft for a mechanical flap rigging the outboard flap rigging task requires you to turn on hydraulics. Even though the manual tells you to keep the spoiler lever at zero; I have witnessed them deploy if the aircraft has been powered up recently during its self-BITE (Built-in Test Equipment) checks. This can cause the spoiler to hit the rig board if installed. The manual does not tell you to pull circuit breakers for the spoilers during rigging; just to put a placard saying not to operate spoilers; but aircraft cannot read placards.[I suggest] a page that requires you to pull and lock out the spoiler circuit breakers. This will prevent any accidental deployment.
Maintenance Technician reported potential for CRJ-700 aircraft spoiler damage during flap rigging.