A dash 8 captain reported #1 hydraulic system leak as they took the runway. They returned to the gat...

Attributes
ACN	984365
Time
Date	201112
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Dash 8-100
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

#1 hydraulic quantity dropped to 0.6 qts just as we taxied onto runway. Told tower we had to taxi clear [of] runway to check problem. Did checklist and returned to gate. Noticed right I/B roll spoiler did not extend normally followed by #1 hydraulic isolation valve and roll spoiler inboard hydraulic caution lights. Lost hydraulic fluid due to failure of right I/B roll spoiler actuator. Called maintenance and made write-up.

Original NASA ASRS Text

Title: A Dash 8 Captain reported #1 hydraulic system leak as they took the runway. They returned to the gate to repair the leaking right inboard spoiler actuator.

Narrative: #1 hydraulic quantity dropped to 0.6 qts just as we taxied onto runway. Told Tower we had to taxi clear [of] runway to check problem. Did checklist and returned to gate. Noticed right I/B roll spoiler did not extend normally followed by #1 hydraulic isolation valve and roll spoiler inboard hydraulic caution lights. Lost hydraulic fluid due to failure of right I/B roll spoiler actuator. Called Maintenance and made write-up.

Data retrieved from NASA's ASRS site as of April 2012 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.

A dash 8 captain reported #1 hydraulic system leak as they took the runway. They returned to the gate to repair the leaking right inboard spoiler actuator.